[PATCH v2 2/2] phy: rockchip: Add Samsung CSI/DSI Combo DCPHY driver

Heiko Stuebner posted 2 patches 2 weeks, 6 days ago
There is a newer version of this series
[PATCH v2 2/2] phy: rockchip: Add Samsung CSI/DSI Combo DCPHY driver
Posted by Heiko Stuebner 2 weeks, 6 days ago
From: Heiko Stuebner <heiko.stuebner@cherry.de>

Add phy driver needed to drive either a MIPI DSI output to a DSI display
or MIPI CSI input from a camera on rk3588.

Right now only the DSI portion is implemented as the whole camera part
needs more work in general.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
---
 drivers/phy/rockchip/Kconfig                  |   12 +
 drivers/phy/rockchip/Makefile                 |    1 +
 .../phy/rockchip/phy-rockchip-samsung-dcphy.c | 1654 +++++++++++++++++
 3 files changed, 1667 insertions(+)
 create mode 100644 drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c

diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig
index 2f7a05f21dc5..2bfb42996503 100644
--- a/drivers/phy/rockchip/Kconfig
+++ b/drivers/phy/rockchip/Kconfig
@@ -83,6 +83,18 @@ config PHY_ROCKCHIP_PCIE
 	help
 	  Enable this to support the Rockchip PCIe PHY.
 
+config PHY_ROCKCHIP_SAMSUNG_DCPHY
+	tristate "Rockchip Samsung MIPI DCPHY driver"
+	depends on (ARCH_ROCKCHIP || COMPILE_TEST)
+	select GENERIC_PHY
+	select GENERIC_PHY_MIPI_DPHY
+	help
+	  Enable this to support the Rockchip MIPI DCPHY with
+	  Samsung IP block.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called phy-rockchip-samsung-dcphy
+
 config PHY_ROCKCHIP_SAMSUNG_HDPTX
 	tristate "Rockchip Samsung HDMI/eDP Combo PHY driver"
 	depends on (ARCH_ROCKCHIP || COMPILE_TEST) && OF
diff --git a/drivers/phy/rockchip/Makefile b/drivers/phy/rockchip/Makefile
index 010a824e32ce..117aaffd037d 100644
--- a/drivers/phy/rockchip/Makefile
+++ b/drivers/phy/rockchip/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_PHY_ROCKCHIP_INNO_HDMI)	+= phy-rockchip-inno-hdmi.o
 obj-$(CONFIG_PHY_ROCKCHIP_INNO_USB2)	+= phy-rockchip-inno-usb2.o
 obj-$(CONFIG_PHY_ROCKCHIP_NANENG_COMBO_PHY)	+= phy-rockchip-naneng-combphy.o
 obj-$(CONFIG_PHY_ROCKCHIP_PCIE)		+= phy-rockchip-pcie.o
+obj-$(CONFIG_PHY_ROCKCHIP_SAMSUNG_DCPHY)	+= phy-rockchip-samsung-dcphy.o
 obj-$(CONFIG_PHY_ROCKCHIP_SAMSUNG_HDPTX)	+= phy-rockchip-samsung-hdptx.o
 obj-$(CONFIG_PHY_ROCKCHIP_SNPS_PCIE3)	+= phy-rockchip-snps-pcie3.o
 obj-$(CONFIG_PHY_ROCKCHIP_TYPEC)	+= phy-rockchip-typec.o
diff --git a/drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c b/drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c
new file mode 100644
index 000000000000..a2f897fa5516
--- /dev/null
+++ b/drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c
@@ -0,0 +1,1654 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) Rockchip Electronics Co.Ltd
+ * Author:
+ *      Guochun Huang <hero.huang@rock-chips.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#define UPDATE(x, h, l)	(((x) << (l)) & GENMASK((h), (l)))
+#define HIWORD_UPDATE(v, h, l)	(((v) << (l)) | (GENMASK((h), (l)) << 16))
+
+#define BIAS_CON0		0x0000
+#define BIAS_CON1		0x0004
+#define BIAS_CON2		0x0008
+#define BIAS_CON4		0x0010
+#define I_MUX_SEL_MASK		GENMASK(6, 5)
+#define I_MUX_SEL(x)		UPDATE(x, 6, 5)
+#define I_MUX_SEL_400MV		I_MUX_SEL(0)
+#define I_MUX_SEL_200MV		I_MUX_SEL(1)
+#define I_MUX_SEL_530MV		I_MUX_SEL(2)
+
+#define PLL_CON0		0x0100
+#define PLL_EN			BIT(12)
+#define S_MASK			GENMASK(10, 8)
+#define S(x)			UPDATE(x, 10, 8)
+#define P_MASK			GENMASK(5, 0)
+#define P(x)			UPDATE(x, 5, 0)
+#define PLL_CON1		0x0104
+#define PLL_CON2		0x0108
+#define M_MASK			GENMASK(9, 0)
+#define M(x)			UPDATE(x, 9, 0)
+#define PLL_CON3		0x010c
+#define MRR_MASK		GENMASK(13, 8)
+#define MRR(x)			UPDATE(x, 13, 8)
+#define MFR_MASK                GENMASK(7, 0)
+#define MFR(x)			UPDATE(x, 7, 0)
+#define PLL_CON4		0x0110
+#define SSCG_EN			BIT(11)
+#define PLL_CON5		0x0114
+#define RESET_N_SEL		BIT(10)
+#define PLL_ENABLE_SEL		BIT(8)
+#define PLL_CON6		0x0118
+#define PLL_CON7		0x011c
+#define PLL_LOCK_CNT(x)		UPDATE(x, 15, 0)
+#define PLL_CON8		0x0120
+#define PLL_STB_CNT(x)		UPDATE(x, 15, 0)
+#define PLL_STAT0		0x0140
+#define PLL_LOCK		BIT(0)
+
+#define DPHY_MC_GNR_CON0	0x0300
+#define PHY_READY		BIT(1)
+#define PHY_ENABLE		BIT(0)
+#define DPHY_MC_GNR_CON1	0x0304
+#define T_PHY_READY(x)		UPDATE(x, 15, 0)
+#define DPHY_MC_ANA_CON0	0x0308
+#define EDGE_CON(x)		UPDATE(x, 14, 12)
+#define EDGE_CON_DIR(x)		UPDATE(x, 9, 9)
+#define EDGE_CON_EN		BIT(8)
+#define RES_UP(x)		UPDATE(x, 7, 4)
+#define RES_DN(x)		UPDATE(x, 3, 0)
+#define DPHY_MC_ANA_CON1	0x030c
+#define DPHY_MC_ANA_CON2	0x0310
+#define HS_VREG_AMP_ICON(x)	UPDATE(x, 1, 0)
+#define DPHY_MC_TIME_CON0	0x0330
+#define HSTX_CLK_SEL		BIT(12)
+#define T_LPX(x)		UPDATE(x, 11, 4)
+#define DPHY_MC_TIME_CON1	0x0334
+#define T_CLK_ZERO(x)		UPDATE(x, 15, 8)
+#define T_CLK_PREPARE(x)	UPDATE(x, 7, 0)
+#define DPHY_MC_TIME_CON2	0x0338
+#define T_HS_EXIT(x)		UPDATE(x, 15, 8)
+#define T_CLK_TRAIL(x)		UPDATE(x, 7, 0)
+#define DPHY_MC_TIME_CON3	0x033c
+#define T_CLK_POST(x)		UPDATE(x, 7, 0)
+#define DPHY_MC_TIME_CON4	0x0340
+#define T_ULPS_EXIT(x)		UPDATE(x, 9, 0)
+#define DPHY_MC_DESKEW_CON0	0x0350
+#define SKEW_CAL_RUN_TIME(x)	UPDATE(x, 15, 12)
+
+#define SKEW_CAL_INIT_RUN_TIME(x)	UPDATE(x, 11, 8)
+#define SKEW_CAL_INIT_WAIT_TIME(x)	UPDATE(x, 7, 4)
+#define SKEW_CAL_EN			BIT(0)
+
+#define COMBO_MD0_GNR_CON0	0x0400
+#define COMBO_MD0_GNR_CON1	0x0404
+#define COMBO_MD0_ANA_CON0	0x0408
+#define COMBO_MD0_ANA_CON1      0x040C
+#define COMBO_MD0_ANA_CON2	0x0410
+
+#define COMBO_MD0_TIME_CON0	0x0430
+#define COMBO_MD0_TIME_CON1	0x0434
+#define COMBO_MD0_TIME_CON2	0x0438
+#define COMBO_MD0_TIME_CON3	0x043C
+#define COMBO_MD0_TIME_CON4	0x0440
+#define COMBO_MD0_DATA_CON0	0x0444
+
+#define COMBO_MD1_GNR_CON0	0x0500
+#define COMBO_MD1_GNR_CON1	0x0504
+#define COMBO_MD1_ANA_CON0	0x0508
+#define COMBO_MD1_ANA_CON1	0x050c
+#define COMBO_MD1_ANA_CON2	0x0510
+#define COMBO_MD1_TIME_CON0	0x0530
+#define COMBO_MD1_TIME_CON1	0x0534
+#define COMBO_MD1_TIME_CON2	0x0538
+#define COMBO_MD1_TIME_CON3	0x053C
+#define COMBO_MD1_TIME_CON4	0x0540
+#define COMBO_MD1_DATA_CON0	0x0544
+
+#define COMBO_MD2_GNR_CON0	0x0600
+#define COMBO_MD2_GNR_CON1	0x0604
+#define COMBO_MD2_ANA_CON0	0X0608
+#define COMBO_MD2_ANA_CON1	0X060C
+#define COMBO_MD2_ANA_CON2	0X0610
+#define COMBO_MD2_TIME_CON0	0x0630
+#define COMBO_MD2_TIME_CON1	0x0634
+#define COMBO_MD2_TIME_CON2	0x0638
+#define COMBO_MD2_TIME_CON3	0x063C
+#define COMBO_MD2_TIME_CON4	0x0640
+#define COMBO_MD2_DATA_CON0	0x0644
+
+#define DPHY_MD3_GNR_CON0	0x0700
+#define DPHY_MD3_GNR_CON1	0x0704
+#define DPHY_MD3_ANA_CON0	0X0708
+#define DPHY_MD3_ANA_CON1	0X070C
+#define DPHY_MD3_ANA_CON2	0X0710
+#define DPHY_MD3_TIME_CON0	0x0730
+#define DPHY_MD3_TIME_CON1	0x0734
+#define DPHY_MD3_TIME_CON2	0x0738
+#define DPHY_MD3_TIME_CON3	0x073C
+#define DPHY_MD3_TIME_CON4	0x0740
+#define DPHY_MD3_DATA_CON0	0x0744
+
+#define T_LP_EXIT_SKEW(x)	UPDATE(x, 3, 2)
+#define T_LP_ENTRY_SKEW(x)	UPDATE(x, 1, 0)
+#define T_HS_ZERO(x)		UPDATE(x, 15, 8)
+#define T_HS_PREPARE(x)		UPDATE(x, 7, 0)
+#define T_HS_EXIT(x)		UPDATE(x, 15, 8)
+#define T_HS_TRAIL(x)		UPDATE(x, 7, 0)
+#define T_TA_GET(x)		UPDATE(x, 7, 4)
+#define T_TA_GO(x)		UPDATE(x, 3, 0)
+
+/* MIPI_CDPHY_GRF registers */
+#define MIPI_DCPHY_GRF_CON0	0x0000
+#define S_CPHY_MODE		HIWORD_UPDATE(1, 3, 3)
+#define M_CPHY_MODE		HIWORD_UPDATE(1, 0, 0)
+
+#define RX_CLK_THS_SETTLE		(0xb30)
+#define RX_LANE0_THS_SETTLE		(0xC30)
+#define RX_LANE0_ERR_SOT_SYNC		(0xC34)
+#define RX_LANE1_THS_SETTLE		(0xD30)
+#define RX_LANE1_ERR_SOT_SYNC		(0xD34)
+#define RX_LANE2_THS_SETTLE		(0xE30)
+#define RX_LANE2_ERR_SOT_SYNC		(0xE34)
+#define RX_LANE3_THS_SETTLE		(0xF30)
+#define RX_LANE3_ERR_SOT_SYNC		(0xF34)
+#define RX_CLK_LANE_ENABLE		(0xB00)
+#define RX_DATA_LANE0_ENABLE		(0xC00)
+#define RX_DATA_LANE1_ENABLE		(0xD00)
+#define RX_DATA_LANE2_ENABLE		(0xE00)
+#define RX_DATA_LANE3_ENABLE		(0xF00)
+
+#define RX_S0C_GNR_CON1			(0xB04)
+#define RX_S0C_ANA_CON1			(0xB0c)
+#define RX_S0C_ANA_CON2			(0xB10)
+#define RX_S0C_ANA_CON3			(0xB14)
+#define RX_COMBO_S0D0_GNR_CON1		(0xC04)
+#define RX_COMBO_S0D0_ANA_CON1		(0xC0c)
+#define RX_COMBO_S0D0_ANA_CON2		(0xC10)
+#define RX_COMBO_S0D0_ANA_CON3		(0xC14)
+#define RX_COMBO_S0D0_ANA_CON6		(0xC20)
+#define RX_COMBO_S0D0_ANA_CON7		(0xC24)
+#define RX_COMBO_S0D0_DESKEW_CON0	(0xC40)
+#define RX_COMBO_S0D0_DESKEW_CON2	(0xC48)
+#define RX_COMBO_S0D0_DESKEW_CON4	(0xC50)
+#define RX_COMBO_S0D0_CRC_CON1		(0xC64)
+#define RX_COMBO_S0D0_CRC_CON2		(0xC68)
+#define RX_COMBO_S0D1_GNR_CON1		(0xD04)
+#define RX_COMBO_S0D1_ANA_CON1		(0xD0c)
+#define RX_COMBO_S0D1_ANA_CON2		(0xD10)
+#define RX_COMBO_S0D1_ANA_CON3		(0xD14)
+#define RX_COMBO_S0D1_ANA_CON6		(0xD20)
+#define RX_COMBO_S0D1_ANA_CON7		(0xD24)
+#define RX_COMBO_S0D1_DESKEW_CON0	(0xD40)
+#define RX_COMBO_S0D1_DESKEW_CON2	(0xD48)
+#define RX_COMBO_S0D1_DESKEW_CON4	(0xD50)
+#define RX_COMBO_S0D1_CRC_CON1		(0xD64)
+#define RX_COMBO_S0D1_CRC_CON2		(0xD68)
+#define RX_COMBO_S0D2_GNR_CON1		(0xE04)
+#define RX_COMBO_S0D2_ANA_CON1		(0xE0c)
+#define RX_COMBO_S0D2_ANA_CON2		(0xE10)
+#define RX_COMBO_S0D2_ANA_CON3		(0xE14)
+#define RX_COMBO_S0D2_ANA_CON6		(0xE20)
+#define RX_COMBO_S0D2_ANA_CON7		(0xE24)
+#define RX_COMBO_S0D2_DESKEW_CON0	(0xE40)
+#define RX_COMBO_S0D2_DESKEW_CON2	(0xE48)
+#define RX_COMBO_S0D2_DESKEW_CON4	(0xE50)
+#define RX_COMBO_S0D2_CRC_CON1		(0xE64)
+#define RX_COMBO_S0D2_CRC_CON2		(0xE68)
+#define RX_S0D3_GNR_CON1		(0xF04)
+#define RX_S0D3_ANA_CON1		(0xF0c)
+#define RX_S0D3_ANA_CON2		(0xF10)
+#define RX_S0D3_ANA_CON3		(0xF14)
+#define RX_S0D3_DESKEW_CON0		(0xF40)
+#define RX_S0D3_DESKEW_CON2		(0xF48)
+#define RX_S0D3_DESKEW_CON4		(0xF50)
+
+enum hs_drv_res_ohm {
+	STRENGTH_30_OHM = 0x8,
+	STRENGTH_31_2_OHM,
+	STRENGTH_32_5_OHM,
+	STRENGTH_34_OHM,
+	STRENGTH_35_5_OHM,
+	STRENGTH_37_OHM,
+	STRENGTH_39_OHM,
+	STRENGTH_41_OHM,
+	STRENGTH_43_OHM = 0x0,
+	STRENGTH_46_OHM,
+	STRENGTH_49_OHM,
+	STRENGTH_52_OHM,
+	STRENGTH_56_OHM,
+	STRENGTH_60_OHM,
+	STRENGTH_66_OHM,
+	STRENGTH_73_OHM,
+};
+
+struct hs_drv_res_cfg {
+	enum hs_drv_res_ohm clk_hs_drv_up_ohm;
+	enum hs_drv_res_ohm clk_hs_drv_down_ohm;
+	enum hs_drv_res_ohm data_hs_drv_up_ohm;
+	enum hs_drv_res_ohm data_hs_drv_down_ohm;
+};
+
+struct samsung_mipi_dcphy_plat_data {
+	const struct hs_drv_res_cfg *dphy_hs_drv_res_cfg;
+	u32 dphy_tx_max_lane_kbps;
+};
+
+struct samsung_mipi_dcphy {
+	struct device *dev;
+	struct clk *ref_clk;
+	struct clk *pclk;
+	struct regmap *regmap;
+	struct regmap *grf_regmap;
+	struct reset_control *m_phy_rst;
+	struct reset_control *s_phy_rst;
+	struct reset_control *apb_rst;
+	struct reset_control *grf_apb_rst;
+	unsigned int lanes;
+
+	const struct samsung_mipi_dcphy_plat_data *pdata;
+	struct {
+		unsigned long long rate;
+		u8 prediv;
+		u16 fbdiv;
+		long dsm;
+		u8 scaler;
+
+		bool ssc_en;
+		u8 mfr;
+		u8 mrr;
+	} pll;
+};
+
+struct samsung_mipi_dphy_timing {
+	unsigned int max_lane_mbps;
+	u8 clk_prepare;
+	u8 clk_zero;
+	u8 clk_post;
+	u8 clk_trail_eot;
+	u8 hs_prepare;
+	u8 hs_zero;
+	u8 hs_trail_eot;
+	u8 lpx;
+	u8 hs_exit;
+	u8 hs_settle;
+};
+
+static const
+struct samsung_mipi_dphy_timing samsung_mipi_dphy_timing_table[] = {
+	{6500, 32, 117, 31, 28, 30, 56, 27, 24, 44, 37},
+	{6490, 32, 116, 31, 28, 30, 56, 27, 24, 44, 37},
+	{6480, 32, 116, 31, 28, 30, 56, 27, 24, 44, 37},
+	{6470, 32, 116, 31, 28, 30, 56, 27, 24, 44, 37},
+	{6460, 32, 116, 31, 28, 30, 56, 27, 24, 44, 37},
+	{6450, 32, 115, 31, 28, 30, 56, 27, 24, 44, 37},
+	{6440, 32, 115, 31, 28, 30, 56, 27, 24, 44, 37},
+	{6430, 31, 116, 31, 28, 30, 55, 27, 24, 44, 37},
+	{6420, 31, 116, 31, 28, 30, 55, 27, 24, 44, 37},
+	{6410, 31, 116, 31, 27, 30, 55, 27, 24, 44, 37},
+	{6400, 31, 115, 30, 27, 30, 55, 27, 23, 43, 36},
+	{6390, 31, 115, 30, 27, 30, 55, 27, 23, 43, 36},
+	{6380, 31, 115, 30, 27, 30, 55, 27, 23, 43, 36},
+	{6370, 31, 115, 30, 27, 30, 55, 26, 23, 43, 36},
+	{6360, 31, 114, 30, 27, 30, 54, 26, 23, 43, 36},
+	{6350, 31, 114, 30, 27, 30, 54, 26, 23, 43, 36},
+	{6340, 31, 114, 30, 27, 30, 54, 26, 23, 43, 36},
+	{6330, 31, 114, 30, 27, 30, 54, 26, 23, 43, 36},
+	{6320, 31, 113, 30, 27, 30, 54, 26, 23, 43, 36},
+	{6310, 31, 113, 30, 27, 30, 54, 26, 23, 43, 36},
+	{6300, 31, 113, 30, 27, 30, 54, 26, 23, 43, 36},
+	{6290, 31, 113, 30, 27, 29, 54, 26, 23, 43, 36},
+	{6280, 31, 112, 30, 27, 29, 54, 26, 23, 43, 36},
+	{6270, 31, 112, 30, 27, 29, 54, 26, 23, 43, 36},
+	{6260, 31, 112, 30, 27, 29, 54, 26, 23, 43, 36},
+	{6250, 31, 112, 30, 27, 29, 54, 26, 23, 42, 36},
+	{6240, 30, 113, 30, 27, 29, 54, 26, 23, 42, 36},
+	{6230, 30, 112, 30, 27, 29, 54, 26, 23, 42, 35},
+	{6220, 30, 112, 30, 27, 29, 53, 26, 23, 42, 35},
+	{6210, 30, 112, 30, 27, 29, 53, 26, 23, 42, 35},
+	{6200, 30, 112, 29, 27, 29, 53, 26, 23, 42, 35},
+	{6190, 30, 111, 29, 27, 29, 53, 26, 23, 42, 35},
+	{6180, 30, 111, 29, 27, 29, 53, 26, 23, 42, 35},
+	{6170, 30, 111, 29, 26, 29, 53, 26, 23, 42, 35},
+	{6160, 30, 111, 29, 26, 29, 53, 26, 23, 42, 35},
+	{6150, 30, 110, 29, 26, 29, 53, 26, 23, 42, 35},
+	{6140, 30, 110, 29, 26, 29, 52, 26, 23, 42, 35},
+	{6130, 30, 110, 29, 26, 29, 52, 25, 22, 42, 35},
+	{6120, 30, 110, 29, 26, 29, 52, 25, 22, 42, 35},
+	{6110, 30, 110, 29, 26, 29, 52, 25, 22, 42, 35},
+	{6100, 30, 109, 29, 26, 29, 52, 25, 22, 41, 35},
+	{6090, 30, 109, 29, 26, 29, 52, 25, 22, 41, 35},
+	{6080, 30, 109, 29, 26, 28, 53, 25, 22, 41, 35},
+	{6070, 30, 109, 29, 26, 28, 52, 25, 22, 41, 34},
+	{6060, 30, 108, 29, 26, 28, 52, 25, 22, 41, 34},
+	{6050, 30, 108, 29, 26, 28, 52, 25, 22, 41, 34},
+	{6040, 29, 109, 29, 26, 28, 52, 25, 22, 41, 34},
+	{6030, 29, 109, 29, 26, 28, 52, 25, 22, 41, 34},
+	{6020, 29, 108, 29, 26, 28, 52, 25, 22, 41, 34},
+	{6010, 29, 108, 29, 26, 28, 52, 25, 22, 41, 34},
+	{6000, 29, 108, 28, 26, 28, 51, 25, 22, 41, 34},
+	{5990, 29, 108, 28, 26, 28, 51, 25, 22, 41, 34},
+	{5980, 29, 107, 28, 26, 28, 51, 25, 22, 41, 34},
+	{5970, 29, 107, 28, 26, 28, 51, 25, 22, 41, 34},
+	{5960, 29, 107, 28, 26, 28, 51, 25, 22, 40, 34},
+	{5950, 29, 107, 28, 26, 28, 51, 25, 22, 40, 34},
+	{5940, 29, 107, 28, 25, 28, 51, 25, 22, 40, 34},
+	{5930, 29, 106, 28, 25, 28, 50, 25, 22, 40, 34},
+	{5920, 29, 106, 28, 25, 28, 50, 25, 22, 40, 34},
+	{5910, 29, 106, 28, 25, 28, 50, 25, 22, 40, 34},
+	{5900, 29, 106, 28, 25, 28, 50, 24, 22, 40, 33},
+	{5890, 29, 105, 28, 25, 28, 50, 24, 22, 40, 33},
+	{5880, 29, 105, 28, 25, 28, 50, 24, 22, 40, 33},
+	{5870, 29, 105, 28, 25, 27, 51, 24, 22, 40, 33},
+	{5860, 29, 105, 28, 25, 27, 51, 24, 21, 40, 33},
+	{5850, 29, 104, 28, 25, 27, 50, 24, 21, 40, 33},
+	{5840, 28, 105, 28, 25, 27, 50, 24, 21, 40, 33},
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+	{ 500, 19,   6,  1, 43, 22,  1, 36, 15,  2, 26},
+	{ 490, 19,   6,  1, 42, 21,  1, 36, 15,  2, 25},
+	{ 480, 18,   6,  1, 42, 21,  1, 35, 15,  2, 25},
+	{ 470, 18,   6,  1, 42, 21,  1, 35, 15,  2, 24},
+	{ 460, 18,   6,  1, 41, 19,  1, 35, 13,  2, 24},
+	{ 450, 17,   5,  1, 41, 19,  1, 34, 13,  2, 23},
+	{ 440, 17,   5,  1, 41, 18,  1, 34, 13,  2, 23},
+	{ 430, 16,   5,  1, 40, 18,  0, 34, 12,  2, 22},
+	{ 420, 16,   5,  1, 40, 18,  0, 33, 12,  2, 22},
+	{ 410, 16,   5,  1, 40, 17,  0, 33, 12,  1, 21},
+	{ 400, 15,   5,  0, 39, 17,  0, 33, 11,  1, 21},
+	{ 390, 15,   4,  0, 39, 17,  0, 32, 12,  1, 20},
+	{ 380, 14,   4,  0, 39, 17,  0, 32, 12,  1, 20},
+	{ 370, 14,   4,  0, 38, 17,  0, 32, 12,  1, 19},
+	{ 360, 14,   4,  0, 38, 15,  0, 31, 10,  1, 19},
+	{ 350, 13,   4,  0, 38, 15,  0, 31, 10,  1, 18},
+	{ 340, 13,   3,  0, 37, 15,  0, 31, 10,  1, 18},
+	{ 330, 12,   3,  0, 37, 14,  0, 30,  9,  1, 17},
+	{ 320, 12,   3,  0, 37, 14,  0, 30,  9,  1, 17},
+	{ 310, 12,   3,  0, 36, 13,  0, 30,  9,  1, 16},
+	{ 300, 11,   3,  0, 36, 13,  0, 29,  8,  1, 16},
+	{ 290, 11,   2,  0, 36, 13,  0, 29,  8,  1, 15},
+	{ 280, 10,   2,  0, 35, 12,  0, 29,  8,  1, 15},
+	{ 270, 10,   2,  0, 35, 12,  0, 28,  8,  0, 14},
+	{ 260,  9,   2,  0, 35, 12,  0, 28,  8,  0, 14},
+	{ 250,  9,   2,  0, 34, 12,  0, 28,  8,  0, 14},
+	{ 240,  9,   2,  0, 34, 12,  0, 27,  8,  0, 13},
+	{ 230,  8,   1,  0, 34, 10,  0, 27,  6,  0, 13},
+	{ 220,  8,   1,  0, 33, 10,  0, 27,  6,  0, 12},
+	{ 210,  7,   1,  0, 33, 10,  0, 26,  6,  0, 12},
+	{ 200,  7,   1,  0, 33,  9,  0, 26,  5,  0, 11},
+	{ 190,  7,   1,  0, 32,  9,  0, 25,  5,  0, 11},
+	{ 180,  6,   1,  0, 32,  8,  0, 25,  5,  0, 10},
+	{ 170,  6,   0,  0, 32,  8,  0, 25,  5,  0, 10},
+	{ 160,  5,   0,  0, 31,  8,  0, 24,  4,  0,  9},
+	{ 150,  5,   0,  0, 31,  8,  0, 24,  5,  0,  9},
+	{ 140,  5,   0,  0, 31,  8,  0, 24,  5,  0,  8},
+	{ 130,  4,   0,  0, 30,  6,  0, 23,  3,  0,  8},
+	{ 120,  4,   0,  0, 30,  6,  0, 23,  3,  0,  7},
+	{ 110,  3,   0,  0, 30,  6,  0, 23,  3,  0,  7},
+	{ 100,  3,   0,  0, 29,  5,  0, 22,  2,  0,  6},
+	{  90,  3,   0,  0, 29,  5,  0, 22,  2,  0,  6},
+	{  80,  2,   0,  0, 28,  5,  0, 22,  2,  0,  5},
+};
+
+static void samsung_mipi_dcphy_bias_block_enable(struct samsung_mipi_dcphy *samsung)
+{
+	u32 bias_con2 = 0x3223;
+
+	regmap_write(samsung->regmap, BIAS_CON0, 0x0010);
+	regmap_write(samsung->regmap, BIAS_CON1, 0x0110);
+	regmap_write(samsung->regmap, BIAS_CON2, bias_con2);
+
+	/* default output voltage select:
+	 * dphy: 400mv
+	 * cphy: 530mv
+	 */
+	regmap_update_bits(samsung->regmap, BIAS_CON4,
+			   I_MUX_SEL_MASK, I_MUX_SEL_400MV);
+}
+
+static void samsung_mipi_dcphy_bias_block_disable(struct samsung_mipi_dcphy *samsung)
+{
+}
+
+static void samsung_mipi_dphy_lane_enable(struct samsung_mipi_dcphy *samsung)
+{
+	regmap_write(samsung->regmap, DPHY_MC_GNR_CON1, T_PHY_READY(0x2000));
+	regmap_update_bits(samsung->regmap, DPHY_MC_GNR_CON0,
+			   PHY_ENABLE, PHY_ENABLE);
+
+	switch (samsung->lanes) {
+	case 4:
+		regmap_write(samsung->regmap, DPHY_MD3_GNR_CON1,
+			     T_PHY_READY(0x2000));
+		regmap_update_bits(samsung->regmap, DPHY_MD3_GNR_CON0,
+				   PHY_ENABLE, PHY_ENABLE);
+		fallthrough;
+	case 3:
+		regmap_write(samsung->regmap, COMBO_MD2_GNR_CON1,
+			     T_PHY_READY(0x2000));
+		regmap_update_bits(samsung->regmap, COMBO_MD2_GNR_CON0,
+				   PHY_ENABLE, PHY_ENABLE);
+		fallthrough;
+	case 2:
+		regmap_write(samsung->regmap, COMBO_MD1_GNR_CON1,
+			     T_PHY_READY(0x2000));
+		regmap_update_bits(samsung->regmap, COMBO_MD1_GNR_CON0,
+				   PHY_ENABLE, PHY_ENABLE);
+		fallthrough;
+	case 1:
+	default:
+		regmap_write(samsung->regmap, COMBO_MD0_GNR_CON1,
+			     T_PHY_READY(0x2000));
+		regmap_update_bits(samsung->regmap, COMBO_MD0_GNR_CON0,
+				   PHY_ENABLE, PHY_ENABLE);
+		break;
+	}
+}
+
+static void samsung_mipi_dphy_lane_disable(struct samsung_mipi_dcphy *samsung)
+{
+	regmap_update_bits(samsung->regmap, DPHY_MC_GNR_CON0, PHY_ENABLE, 0);
+	regmap_update_bits(samsung->regmap, COMBO_MD0_GNR_CON0, PHY_ENABLE, 0);
+	regmap_update_bits(samsung->regmap, COMBO_MD1_GNR_CON0, PHY_ENABLE, 0);
+	regmap_update_bits(samsung->regmap, COMBO_MD2_GNR_CON0, PHY_ENABLE, 0);
+	regmap_update_bits(samsung->regmap, DPHY_MD3_GNR_CON0, PHY_ENABLE, 0);
+}
+
+static void samsung_mipi_dcphy_pll_configure(struct samsung_mipi_dcphy *samsung)
+{
+	regmap_update_bits(samsung->regmap, PLL_CON0, S_MASK | P_MASK,
+			   S(samsung->pll.scaler) | P(samsung->pll.prediv));
+
+	if (samsung->pll.dsm < 0) {
+		u16 dsm_tmp;
+
+		/* Using opposite number subtraction to find complement */
+		dsm_tmp = abs(samsung->pll.dsm);
+		dsm_tmp = dsm_tmp - 1;
+		dsm_tmp ^= 0xffff;
+		regmap_write(samsung->regmap, PLL_CON1, dsm_tmp);
+	} else {
+		regmap_write(samsung->regmap, PLL_CON1, samsung->pll.dsm);
+	}
+
+	regmap_update_bits(samsung->regmap, PLL_CON2,
+			   M_MASK, M(samsung->pll.fbdiv));
+
+	if (samsung->pll.ssc_en) {
+		regmap_write(samsung->regmap, PLL_CON3,
+			     MRR(samsung->pll.mrr) | MFR(samsung->pll.mfr));
+		regmap_update_bits(samsung->regmap, PLL_CON4, SSCG_EN, SSCG_EN);
+	}
+
+	regmap_write(samsung->regmap, PLL_CON5, RESET_N_SEL | PLL_ENABLE_SEL);
+	regmap_write(samsung->regmap, PLL_CON7, PLL_LOCK_CNT(0xf000));
+	regmap_write(samsung->regmap, PLL_CON8, PLL_STB_CNT(0xf000));
+}
+
+static int samsung_mipi_dcphy_pll_enable(struct samsung_mipi_dcphy *samsung)
+{
+	u32 sts;
+	int ret;
+
+	regmap_update_bits(samsung->regmap, PLL_CON0, PLL_EN, PLL_EN);
+
+	ret = regmap_read_poll_timeout(samsung->regmap, PLL_STAT0,
+				       sts, (sts & PLL_LOCK), 1000, 20000);
+	if (ret < 0)
+		dev_err(samsung->dev, "DC-PHY pll failed to lock\n");
+
+	return ret;
+}
+
+static void samsung_mipi_dcphy_pll_disable(struct samsung_mipi_dcphy *samsung)
+{
+	regmap_update_bits(samsung->regmap, PLL_CON0, PLL_EN, 0);
+}
+
+static const struct samsung_mipi_dphy_timing *
+samsung_mipi_dphy_get_timing(struct samsung_mipi_dcphy *samsung)
+{
+	const struct samsung_mipi_dphy_timing *timings;
+	unsigned int num_timings;
+	unsigned int lane_mbps = div64_ul(samsung->pll.rate, USEC_PER_SEC);
+	unsigned int i;
+
+	timings = samsung_mipi_dphy_timing_table;
+	num_timings = ARRAY_SIZE(samsung_mipi_dphy_timing_table);
+
+	for (i = num_timings; i > 0; i--)
+		if (lane_mbps <= timings[i - 1].max_lane_mbps)
+			break;
+
+	if (i == 0)
+		++i;
+
+	return &timings[i - 1];
+}
+
+static unsigned long
+samsung_mipi_dcphy_pll_round_rate(struct samsung_mipi_dcphy *samsung,
+				  unsigned long prate, unsigned long rate,
+				  u8 *prediv, u16 *fbdiv, int *dsm, u8 *scaler)
+{
+	u32 max_fout = samsung->pdata->dphy_tx_max_lane_kbps;
+	u64 best_freq = 0;
+	u64 fin, fvco, fout;
+	u8 min_prediv, max_prediv;
+	u8 _prediv, best_prediv = 1;
+	u16 _fbdiv, best_fbdiv = 1;
+	u8 _scaler, best_scaler = 0;
+	u32 min_delta = UINT_MAX;
+	long _dsm, best_dsm = 0;
+
+	if (!prate) {
+		dev_err(samsung->dev, "parent rate of PLL can not be zero\n");
+		return 0;
+	}
+
+	/*
+	 * The PLL output frequency can be calculated using a simple formula:
+	 * Fvco = ((m+k/65536) x 2 x Fin) / p
+	 * Fout = ((m+k/65536) x 2 x Fin) / (p x 2^s)
+	 */
+	fin = div64_ul(prate, MSEC_PER_SEC);
+
+	while (!best_freq) {
+		fout = div64_ul(rate, MSEC_PER_SEC);
+		if (fout > max_fout)
+			fout = max_fout;
+
+		/* 0 ≤ S[2:0] ≤ 6 */
+		for (_scaler = 0; _scaler < 7; _scaler++) {
+			fvco = fout << _scaler;
+
+			/*
+			 * 2600MHz ≤ FVCO ≤ 6600MHz
+			 */
+			if (fvco < 2600 * MSEC_PER_SEC || fvco > 6600 * MSEC_PER_SEC)
+				continue;
+
+			/* 6MHz ≤ Fref(Fin / p) ≤ 30MHz */
+			min_prediv = DIV_ROUND_UP_ULL(fin, 30 * MSEC_PER_SEC);
+			max_prediv = DIV_ROUND_CLOSEST_ULL(fin, 6 * MSEC_PER_SEC);
+
+			for (_prediv = min_prediv; _prediv <= max_prediv; _prediv++) {
+				u64 delta, tmp;
+
+				_fbdiv = DIV_ROUND_CLOSEST_ULL(fvco * _prediv, 2 * fin);
+
+				 /* 64 ≤ M[9:0] ≤ 1023 */
+				if (_fbdiv < 64 || _fbdiv > 1023)
+					continue;
+
+				/* -32767 ≤ K[15:0] ≤ 32767 */
+				_dsm = ((_prediv * fvco) - (2 * _fbdiv * fin));
+				_dsm = DIV_ROUND_UP_ULL(_dsm << 15, fin);
+				if (abs(_dsm) > 32767)
+					continue;
+
+				tmp = DIV_ROUND_CLOSEST_ULL((_fbdiv * fin * 2 * 1000), _prediv);
+				tmp += DIV_ROUND_CLOSEST_ULL((_dsm * fin * 1000), _prediv << 15);
+
+				delta = abs(fvco * MSEC_PER_SEC - tmp);
+				if (delta < min_delta) {
+					best_prediv = _prediv;
+					best_fbdiv = _fbdiv;
+					best_dsm = _dsm;
+					best_scaler = _scaler;
+					min_delta = delta;
+					best_freq = DIV_ROUND_CLOSEST_ULL(tmp, 1000) * MSEC_PER_SEC;
+				}
+			}
+		}
+
+		rate += 100 * MSEC_PER_SEC;
+	}
+
+	*prediv = best_prediv;
+	*fbdiv = best_fbdiv;
+	*dsm = (int)best_dsm & 0xffff;
+	*scaler = best_scaler;
+	dev_dbg(samsung->dev, "p: %d, m: %d, dsm:%ld, scaler: %d\n",
+		best_prediv, best_fbdiv, best_dsm, best_scaler);
+
+	return best_freq >> best_scaler;
+}
+
+static void
+samsung_mipi_dphy_clk_lane_timing_init(struct samsung_mipi_dcphy *samsung)
+{
+	const struct samsung_mipi_dphy_timing *timing;
+	unsigned int lane_hs_rate = div64_ul(samsung->pll.rate, USEC_PER_SEC);
+	u32 val, res_up, res_down;
+
+	timing = samsung_mipi_dphy_get_timing(samsung);
+	regmap_write(samsung->regmap, DPHY_MC_GNR_CON0, 0xf000);
+
+	/*
+	 * The Drive-Strength / Voltage-Amplitude is adjusted by setting
+	 * the Driver-Up Resistor and Driver-Down Resistor.
+	 */
+	res_up = samsung->pdata->dphy_hs_drv_res_cfg->clk_hs_drv_up_ohm;
+	res_down = samsung->pdata->dphy_hs_drv_res_cfg->clk_hs_drv_down_ohm;
+	val = EDGE_CON(7) | EDGE_CON_DIR(0) | EDGE_CON_EN |
+	      RES_UP(res_up) | RES_DN(res_down);
+	regmap_write(samsung->regmap, DPHY_MC_ANA_CON0, val);
+
+	if (lane_hs_rate >= 4500)
+		regmap_write(samsung->regmap, DPHY_MC_ANA_CON1, 0x0001);
+
+	val = 0;
+	/*
+	 * Divide-by-2 Clock from Serial Clock. Use this when data rate is under
+	 * 1500Mbps, otherwise divide-by-16 Clock from Serial Clock
+	 */
+	if (lane_hs_rate < 1500)
+		val = HSTX_CLK_SEL;
+
+	val |= T_LPX(timing->lpx);
+	/*  T_LP_EXIT_SKEW/T_LP_ENTRY_SKEW unconfig */
+	regmap_write(samsung->regmap, DPHY_MC_TIME_CON0, val);
+
+	val = T_CLK_ZERO(timing->clk_zero) | T_CLK_PREPARE(timing->clk_prepare);
+	regmap_write(samsung->regmap, DPHY_MC_TIME_CON1, val);
+
+	val = T_HS_EXIT(timing->hs_exit) | T_CLK_TRAIL(timing->clk_trail_eot);
+	regmap_write(samsung->regmap, DPHY_MC_TIME_CON2, val);
+
+	val = T_CLK_POST(timing->clk_post);
+	regmap_write(samsung->regmap, DPHY_MC_TIME_CON3, val);
+
+	/* Escape Clock is 20.00MHz */
+	regmap_write(samsung->regmap, DPHY_MC_TIME_CON4, 0x1f4);
+
+	/*
+	 * skew calibration should be off, if the operation data rate is
+	 * under 1.5Gbps or equal to 1.5Gbps.
+	 */
+	if (lane_hs_rate > 1500)
+		regmap_write(samsung->regmap, DPHY_MC_DESKEW_CON0, 0x9cb1);
+}
+
+static void
+samsung_mipi_dphy_data_lane_timing_init(struct samsung_mipi_dcphy *samsung)
+{
+	const struct samsung_mipi_dphy_timing *timing;
+	unsigned int lane_hs_rate = div64_ul(samsung->pll.rate, USEC_PER_SEC);
+	u32 val, res_up, res_down;
+
+	timing = samsung_mipi_dphy_get_timing(samsung);
+
+	/*
+	 * The Drive-Strength / Voltage-Amplitude is adjusted by adjusting the
+	 *  Driver-Up Resistor and Driver-Down Resistor.
+	 */
+	res_up = samsung->pdata->dphy_hs_drv_res_cfg->data_hs_drv_up_ohm;
+	res_down = samsung->pdata->dphy_hs_drv_res_cfg->data_hs_drv_down_ohm;
+	val = EDGE_CON(7) | EDGE_CON_DIR(0) | EDGE_CON_EN |
+	      RES_UP(res_up) | RES_DN(res_down);
+	regmap_write(samsung->regmap, COMBO_MD0_ANA_CON0, val);
+	regmap_write(samsung->regmap, COMBO_MD1_ANA_CON0, val);
+	regmap_write(samsung->regmap, COMBO_MD2_ANA_CON0, val);
+	regmap_write(samsung->regmap, DPHY_MD3_ANA_CON0, val);
+
+	if (lane_hs_rate >= 4500) {
+		regmap_write(samsung->regmap, COMBO_MD0_ANA_CON1, 0x0001);
+		regmap_write(samsung->regmap, COMBO_MD1_ANA_CON1, 0x0001);
+		regmap_write(samsung->regmap, COMBO_MD2_ANA_CON1, 0x0001);
+		regmap_write(samsung->regmap, DPHY_MD3_ANA_CON1, 0x0001);
+	}
+
+	val = 0;
+	/*
+	 * Divide-by-2 Clock from Serial Clock. Use this when data rate is under
+	 * 1500Mbps, otherwise divide-by-16 Clock from Serial Clock
+	 */
+	if (lane_hs_rate < 1500)
+		val = HSTX_CLK_SEL;
+
+	val |= T_LPX(timing->lpx);
+	/*  T_LP_EXIT_SKEW/T_LP_ENTRY_SKEW unconfig */
+	regmap_write(samsung->regmap, COMBO_MD0_TIME_CON0, val);
+	regmap_write(samsung->regmap, COMBO_MD1_TIME_CON0, val);
+	regmap_write(samsung->regmap, COMBO_MD2_TIME_CON0, val);
+	regmap_write(samsung->regmap, DPHY_MD3_TIME_CON0, val);
+
+	val = T_HS_ZERO(timing->hs_zero) | T_HS_PREPARE(timing->hs_prepare);
+	regmap_write(samsung->regmap, COMBO_MD0_TIME_CON1, val);
+	regmap_write(samsung->regmap, COMBO_MD1_TIME_CON1, val);
+	regmap_write(samsung->regmap, COMBO_MD2_TIME_CON1, val);
+	regmap_write(samsung->regmap, DPHY_MD3_TIME_CON1, val);
+
+	val = T_HS_EXIT(timing->hs_exit) | T_HS_TRAIL(timing->hs_trail_eot);
+	regmap_write(samsung->regmap, COMBO_MD0_TIME_CON2, val);
+	regmap_write(samsung->regmap, COMBO_MD1_TIME_CON2, val);
+	regmap_write(samsung->regmap, COMBO_MD2_TIME_CON2, val);
+	regmap_write(samsung->regmap, DPHY_MD3_TIME_CON2, val);
+
+	/* TTA-GET/TTA-GO Timing Counter register use default value */
+	val = T_TA_GET(0x3) | T_TA_GO(0x0);
+	regmap_write(samsung->regmap, COMBO_MD0_TIME_CON3, val);
+	regmap_write(samsung->regmap, COMBO_MD1_TIME_CON3, val);
+	regmap_write(samsung->regmap, COMBO_MD2_TIME_CON3, val);
+	regmap_write(samsung->regmap, DPHY_MD3_TIME_CON3, val);
+
+	/* Escape Clock is 20.00MHz */
+	regmap_write(samsung->regmap, COMBO_MD0_TIME_CON4, 0x1f4);
+	regmap_write(samsung->regmap, COMBO_MD1_TIME_CON4, 0x1f4);
+	regmap_write(samsung->regmap, COMBO_MD2_TIME_CON4, 0x1f4);
+	regmap_write(samsung->regmap, DPHY_MD3_TIME_CON4, 0x1f4);
+}
+
+static int samsung_mipi_dphy_power_on(struct samsung_mipi_dcphy *samsung)
+{
+	int ret;
+
+	reset_control_assert(samsung->m_phy_rst);
+
+	samsung_mipi_dcphy_bias_block_enable(samsung);
+	samsung_mipi_dcphy_pll_configure(samsung);
+	samsung_mipi_dphy_clk_lane_timing_init(samsung);
+	samsung_mipi_dphy_data_lane_timing_init(samsung);
+	ret = samsung_mipi_dcphy_pll_enable(samsung);
+	if (ret < 0) {
+		samsung_mipi_dcphy_bias_block_disable(samsung);
+		return ret;
+	}
+
+	samsung_mipi_dphy_lane_enable(samsung);
+
+	reset_control_deassert(samsung->m_phy_rst);
+
+	/* The TSKEWCAL maximum is 100 µsec
+	 * at initial calibration.
+	 */
+	usleep_range(100, 110);
+
+	return 0;
+}
+
+static int samsung_mipi_dcphy_power_on(struct phy *phy)
+{
+	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
+	enum phy_mode mode = phy_get_mode(phy);
+
+	pm_runtime_get_sync(samsung->dev);
+	reset_control_assert(samsung->apb_rst);
+	udelay(1);
+	reset_control_deassert(samsung->apb_rst);
+
+	switch (mode) {
+	case PHY_MODE_MIPI_DPHY:
+		return samsung_mipi_dphy_power_on(samsung);
+	default:
+		/* CSI cphy part to be implemented later */
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int samsung_mipi_dcphy_power_off(struct phy *phy)
+{
+	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
+	enum phy_mode mode = phy_get_mode(phy);
+
+	switch (mode) {
+	case PHY_MODE_MIPI_DPHY:
+		samsung_mipi_dphy_lane_disable(samsung);
+		break;
+	default:
+		/* CSI cphy part to be implemented later */
+		return -EOPNOTSUPP;
+	}
+
+	samsung_mipi_dcphy_pll_disable(samsung);
+	samsung_mipi_dcphy_bias_block_disable(samsung);
+
+	pm_runtime_put(samsung->dev);
+
+	return 0;
+}
+
+static int samsung_mipi_dcphy_set_mode(struct phy *phy, enum phy_mode mode,
+				       int submode)
+{
+	return 0;
+}
+
+static int
+samsung_mipi_dcphy_pll_ssc_modulation_calc(struct samsung_mipi_dcphy *samsung,
+					   u8 *mfr, u8 *mrr)
+{
+	unsigned long fin = div64_ul(clk_get_rate(samsung->ref_clk), MSEC_PER_SEC);
+	u16 prediv = samsung->pll.prediv;
+	u16 fbdiv = samsung->pll.fbdiv;
+	u16 min_mfr, max_mfr;
+	u16 _mfr, best_mfr = 0;
+	u16 mr, _mrr, best_mrr = 0;
+
+	/* 20KHz ≤ MF ≤ 150KHz */
+	max_mfr = DIV_ROUND_UP(fin, (20 * prediv) << 5);
+	min_mfr = div64_ul(fin, ((150 * prediv) << 5));
+	/*0 ≤ mfr ≤ 255 */
+	if (max_mfr > 256)
+		max_mfr = 256;
+
+	for (_mfr = min_mfr; _mfr < max_mfr; _mfr++) {
+		/* 1 ≤ mrr ≤ 31 */
+		for (_mrr = 1; _mrr < 32; _mrr++) {
+			mr = DIV_ROUND_UP(_mfr * _mrr * 100, fbdiv << 6);
+			/* 0 ≤ MR ≤ 5% */
+			if (mr > 5)
+				continue;
+
+			if (_mfr * _mrr < 513) {
+				best_mfr = _mfr;
+				best_mrr = _mrr;
+				break;
+			}
+		}
+	}
+
+	if (best_mrr) {
+		*mfr = best_mfr & 0xff;
+		*mrr = best_mrr & 0x3f;
+	} else {
+		dev_err(samsung->dev, "failed to calc ssc parameter mfr and mrr\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void
+samsung_mipi_dcphy_pll_calc_rate(struct samsung_mipi_dcphy *samsung,
+				 unsigned long long rate)
+{
+	unsigned long prate = clk_get_rate(samsung->ref_clk);
+	unsigned long fout;
+	u8 scaler = 0, mfr = 0, mrr = 0;
+	u16 fbdiv = 0;
+	u8 prediv = 1;
+	int dsm = 0;
+	int ret;
+
+	fout = samsung_mipi_dcphy_pll_round_rate(samsung, prate, rate,
+						 &prediv, &fbdiv, &dsm,
+						 &scaler);
+
+	dev_dbg(samsung->dev, "%s: fin=%lu, req_rate=%llu\n",
+		__func__, prate, rate);
+	dev_dbg(samsung->dev, "%s: fout=%lu, prediv=%u, fbdiv=%u\n",
+		__func__, fout, prediv, fbdiv);
+
+	samsung->pll.prediv = prediv;
+	samsung->pll.fbdiv = fbdiv;
+	samsung->pll.dsm = dsm;
+	samsung->pll.scaler = scaler;
+	samsung->pll.rate = fout;
+
+	/*
+	 * All DPHY 2.0 compliant Transmitters shall support SSC operating above
+	 * 2.5 Gbps
+	 */
+	if (fout > 2500000000LL) {
+		ret = samsung_mipi_dcphy_pll_ssc_modulation_calc(samsung,
+								 &mfr, &mrr);
+		if (!ret) {
+			samsung->pll.ssc_en = true;
+			samsung->pll.mfr = mfr;
+			samsung->pll.mrr = mrr;
+		}
+	}
+}
+
+static int samsung_mipi_dcphy_configure(struct phy *phy,
+					union phy_configure_opts *opts)
+{
+	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
+	unsigned long long target_rate = opts->mipi_dphy.hs_clk_rate;
+
+	samsung->lanes = opts->mipi_dphy.lanes > 4 ? 4 : opts->mipi_dphy.lanes;
+
+	samsung_mipi_dcphy_pll_calc_rate(samsung, target_rate);
+	opts->mipi_dphy.hs_clk_rate = samsung->pll.rate;
+
+	return 0;
+}
+
+static int samsung_mipi_dcphy_init(struct phy *phy)
+{
+	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
+
+	pm_runtime_get_sync(samsung->dev);
+
+	return 0;
+}
+
+static int samsung_mipi_dcphy_exit(struct phy *phy)
+{
+	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
+
+	pm_runtime_put(samsung->dev);
+
+	return 0;
+}
+
+static const struct phy_ops samsung_mipi_dcphy_ops = {
+	.configure = samsung_mipi_dcphy_configure,
+	.set_mode = samsung_mipi_dcphy_set_mode,
+	.power_on  = samsung_mipi_dcphy_power_on,
+	.power_off = samsung_mipi_dcphy_power_off,
+	.init = samsung_mipi_dcphy_init,
+	.exit = samsung_mipi_dcphy_exit,
+	.owner	   = THIS_MODULE,
+};
+
+static const struct regmap_config samsung_mipi_dcphy_regmap_config = {
+	.name = "dcphy",
+	.reg_bits = 32,
+	.val_bits = 32,
+	.reg_stride = 4,
+	.max_register = 0x10000,
+};
+
+static int samsung_mipi_dcphy_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct samsung_mipi_dcphy *samsung;
+	struct phy_provider *phy_provider;
+	struct phy *phy;
+	struct resource *res;
+	void __iomem *regs;
+	int ret;
+
+	samsung = devm_kzalloc(dev, sizeof(*samsung), GFP_KERNEL);
+	if (!samsung)
+		return -ENOMEM;
+
+	samsung->dev = dev;
+	samsung->pdata = device_get_match_data(dev);
+	platform_set_drvdata(pdev, samsung);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	samsung->regmap = devm_regmap_init_mmio(dev, regs,
+						&samsung_mipi_dcphy_regmap_config);
+	if (IS_ERR(samsung->regmap))
+		return dev_err_probe(dev, PTR_ERR(samsung->regmap), "Failed to init regmap\n");
+
+	samsung->grf_regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
+	if (IS_ERR(samsung->grf_regmap))
+		return dev_err_probe(dev, PTR_ERR(samsung->grf_regmap),
+				     "Unable to get rockchip,grf\n");
+
+	samsung->ref_clk = devm_clk_get(dev, "ref");
+	if (IS_ERR(samsung->ref_clk))
+		return dev_err_probe(dev, PTR_ERR(samsung->ref_clk),
+				     "Failed to get reference clock\n");
+
+	samsung->pclk = devm_clk_get(dev, "pclk");
+	if (IS_ERR(samsung->pclk))
+		return dev_err_probe(dev, PTR_ERR(samsung->pclk), "Failed to get pclk\n");
+
+	samsung->m_phy_rst = devm_reset_control_get(dev, "m_phy");
+	if (IS_ERR(samsung->m_phy_rst))
+		return dev_err_probe(dev, PTR_ERR(samsung->m_phy_rst),
+				     "Failed to get system m_phy_rst control\n");
+
+	samsung->s_phy_rst = devm_reset_control_get(dev, "s_phy");
+	if (IS_ERR(samsung->s_phy_rst))
+		return dev_err_probe(dev, PTR_ERR(samsung->s_phy_rst),
+				     "Failed to get system s_phy_rst control\n");
+
+	samsung->apb_rst = devm_reset_control_get(dev, "apb");
+	if (IS_ERR(samsung->apb_rst))
+		return dev_err_probe(dev, PTR_ERR(samsung->apb_rst),
+				     "Failed to get system apb_rst control\n");
+
+	samsung->grf_apb_rst = devm_reset_control_get(dev, "grf");
+	if (IS_ERR(samsung->grf_apb_rst))
+		return dev_err_probe(dev, PTR_ERR(samsung->grf_apb_rst),
+				     "Failed to get system grf_apb_rst control\n");
+
+	phy = devm_phy_create(dev, NULL, &samsung_mipi_dcphy_ops);
+	if (IS_ERR(phy))
+		return dev_err_probe(dev, PTR_ERR(phy), "Failed to create MIPI DC-PHY\n");
+
+	phy_set_drvdata(phy, samsung);
+
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to enable runtime PM\n");
+
+	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+	if (IS_ERR(phy_provider))
+		return dev_err_probe(dev, PTR_ERR(phy_provider),
+				     "Failed to register phy provider\n");
+
+	return 0;
+}
+
+static __maybe_unused int samsung_mipi_dcphy_runtime_suspend(struct device *dev)
+{
+	struct samsung_mipi_dcphy *samsung = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(samsung->pclk);
+	clk_disable_unprepare(samsung->ref_clk);
+
+	return 0;
+}
+
+static __maybe_unused int samsung_mipi_dcphy_runtime_resume(struct device *dev)
+{
+	struct samsung_mipi_dcphy *samsung = dev_get_drvdata(dev);
+
+	clk_prepare_enable(samsung->pclk);
+	clk_prepare_enable(samsung->ref_clk);
+
+	return 0;
+}
+
+static const struct dev_pm_ops samsung_mipi_dcphy_pm_ops = {
+	SET_RUNTIME_PM_OPS(samsung_mipi_dcphy_runtime_suspend,
+			   samsung_mipi_dcphy_runtime_resume, NULL)
+};
+
+static const struct hs_drv_res_cfg rk3576_dphy_hs_drv_res_cfg = {
+	.clk_hs_drv_up_ohm = STRENGTH_52_OHM,
+	.clk_hs_drv_down_ohm = STRENGTH_52_OHM,
+	.data_hs_drv_up_ohm = STRENGTH_39_OHM,
+	.data_hs_drv_down_ohm = STRENGTH_39_OHM,
+};
+
+static const struct hs_drv_res_cfg rk3588_dphy_hs_drv_res_cfg = {
+	.clk_hs_drv_up_ohm = STRENGTH_34_OHM,
+	.clk_hs_drv_down_ohm = STRENGTH_34_OHM,
+	.data_hs_drv_up_ohm = STRENGTH_43_OHM,
+	.data_hs_drv_down_ohm = STRENGTH_43_OHM,
+};
+
+static const struct samsung_mipi_dcphy_plat_data rk3576_samsung_mipi_dcphy_plat_data = {
+	.dphy_hs_drv_res_cfg = &rk3576_dphy_hs_drv_res_cfg,
+	.dphy_tx_max_lane_kbps = 2500000L,
+};
+
+static const struct samsung_mipi_dcphy_plat_data rk3588_samsung_mipi_dcphy_plat_data = {
+	.dphy_hs_drv_res_cfg = &rk3588_dphy_hs_drv_res_cfg,
+	.dphy_tx_max_lane_kbps = 4500000L,
+};
+
+static const struct of_device_id samsung_mipi_dcphy_of_match[] = {
+	{
+		.compatible = "rockchip,rk3576-mipi-dcphy",
+		.data = &rk3576_samsung_mipi_dcphy_plat_data,
+	}, {
+		.compatible = "rockchip,rk3588-mipi-dcphy",
+		.data = &rk3588_samsung_mipi_dcphy_plat_data,
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, samsung_mipi_dcphy_of_match);
+
+static struct platform_driver samsung_mipi_dcphy_driver = {
+	.driver = {
+		.name = "samsung-mipi-dcphy",
+		.of_match_table	= of_match_ptr(samsung_mipi_dcphy_of_match),
+		.pm = &samsung_mipi_dcphy_pm_ops,
+	},
+	.probe	= samsung_mipi_dcphy_probe,
+};
+module_platform_driver(samsung_mipi_dcphy_driver);
+
+MODULE_AUTHOR("Guochun Huang<hero.huang@rock-chips.com>");
+MODULE_DESCRIPTION("Samsung MIPI DCPHY Driver");
+MODULE_LICENSE("GPL");
-- 
2.45.2

Re: [PATCH v2 2/2] phy: rockchip: Add Samsung CSI/DSI Combo DCPHY driver
Posted by kernel test robot 2 weeks, 4 days ago
Hi Heiko,

kernel test robot noticed the following build warnings:

[auto build test WARNING on rockchip/for-next]
[also build test WARNING on robh/for-next linus/master v6.12-rc6 next-20241105]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Heiko-Stuebner/dt-bindings-phy-Add-Rockchip-MIPI-CSI-DSI-PHY-schema/20241104-193646
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git for-next
patch link:    https://lore.kernel.org/r/20241104111121.99274-3-heiko%40sntech.de
patch subject: [PATCH v2 2/2] phy: rockchip: Add Samsung CSI/DSI Combo DCPHY driver
config: m68k-randconfig-r113-20241105 (https://download.01.org/0day-ci/archive/20241106/202411060336.yBL7jGAs-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 14.1.0
reproduce: (https://download.01.org/0day-ci/archive/20241106/202411060336.yBL7jGAs-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411060336.yBL7jGAs-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c:1630:34: warning: 'samsung_mipi_dcphy_of_match' defined but not used [-Wunused-const-variable=]
    1630 | static const struct of_device_id samsung_mipi_dcphy_of_match[] = {
         |                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for GET_FREE_REGION
   Depends on [n]: SPARSEMEM [=n]
   Selected by [y]:
   - RESOURCE_KUNIT_TEST [=y] && RUNTIME_TESTING_MENU [=y] && KUNIT [=y]


vim +/samsung_mipi_dcphy_of_match +1630 drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c

  1629	
> 1630	static const struct of_device_id samsung_mipi_dcphy_of_match[] = {
  1631		{
  1632			.compatible = "rockchip,rk3576-mipi-dcphy",
  1633			.data = &rk3576_samsung_mipi_dcphy_plat_data,
  1634		}, {
  1635			.compatible = "rockchip,rk3588-mipi-dcphy",
  1636			.data = &rk3588_samsung_mipi_dcphy_plat_data,
  1637		},
  1638		{ /* sentinel */ }
  1639	};
  1640	MODULE_DEVICE_TABLE(of, samsung_mipi_dcphy_of_match);
  1641	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Re: [PATCH v2 2/2] phy: rockchip: Add Samsung CSI/DSI Combo DCPHY driver
Posted by Sebastian Reichel 2 weeks, 5 days ago
Hi,

On Mon, Nov 04, 2024 at 12:11:16PM +0100, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner@cherry.de>
> 
> Add phy driver needed to drive either a MIPI DSI output to a DSI display
> or MIPI CSI input from a camera on rk3588.
> 
> Right now only the DSI portion is implemented as the whole camera part
> needs more work in general.
> 
> Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
> ---

Do you have a git branch with the DSI controller driver, so that
this can actually be tested? :)

>  drivers/phy/rockchip/Kconfig                  |   12 +
>  drivers/phy/rockchip/Makefile                 |    1 +
>  .../phy/rockchip/phy-rockchip-samsung-dcphy.c | 1654 +++++++++++++++++
>  3 files changed, 1667 insertions(+)
>  create mode 100644 drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c
> 
> diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig
> index 2f7a05f21dc5..2bfb42996503 100644
> --- a/drivers/phy/rockchip/Kconfig
> +++ b/drivers/phy/rockchip/Kconfig
> @@ -83,6 +83,18 @@ config PHY_ROCKCHIP_PCIE
>  	help
>  	  Enable this to support the Rockchip PCIe PHY.
>  
> +config PHY_ROCKCHIP_SAMSUNG_DCPHY
> +	tristate "Rockchip Samsung MIPI DCPHY driver"
> +	depends on (ARCH_ROCKCHIP || COMPILE_TEST)
> +	select GENERIC_PHY
> +	select GENERIC_PHY_MIPI_DPHY
> +	help
> +	  Enable this to support the Rockchip MIPI DCPHY with
> +	  Samsung IP block.
> +
> +	  To compile this driver as a module, choose M here: the module
> +	  will be called phy-rockchip-samsung-dcphy
> +
>  config PHY_ROCKCHIP_SAMSUNG_HDPTX
>  	tristate "Rockchip Samsung HDMI/eDP Combo PHY driver"
>  	depends on (ARCH_ROCKCHIP || COMPILE_TEST) && OF
> diff --git a/drivers/phy/rockchip/Makefile b/drivers/phy/rockchip/Makefile
> index 010a824e32ce..117aaffd037d 100644
> --- a/drivers/phy/rockchip/Makefile
> +++ b/drivers/phy/rockchip/Makefile
> @@ -8,6 +8,7 @@ obj-$(CONFIG_PHY_ROCKCHIP_INNO_HDMI)	+= phy-rockchip-inno-hdmi.o
>  obj-$(CONFIG_PHY_ROCKCHIP_INNO_USB2)	+= phy-rockchip-inno-usb2.o
>  obj-$(CONFIG_PHY_ROCKCHIP_NANENG_COMBO_PHY)	+= phy-rockchip-naneng-combphy.o
>  obj-$(CONFIG_PHY_ROCKCHIP_PCIE)		+= phy-rockchip-pcie.o
> +obj-$(CONFIG_PHY_ROCKCHIP_SAMSUNG_DCPHY)	+= phy-rockchip-samsung-dcphy.o
>  obj-$(CONFIG_PHY_ROCKCHIP_SAMSUNG_HDPTX)	+= phy-rockchip-samsung-hdptx.o
>  obj-$(CONFIG_PHY_ROCKCHIP_SNPS_PCIE3)	+= phy-rockchip-snps-pcie3.o
>  obj-$(CONFIG_PHY_ROCKCHIP_TYPEC)	+= phy-rockchip-typec.o
> diff --git a/drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c b/drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c
> new file mode 100644
> index 000000000000..a2f897fa5516
> --- /dev/null
> +++ b/drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c
> @@ -0,0 +1,1654 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (C) Rockchip Electronics Co.Ltd
> + * Author:
> + *      Guochun Huang <hero.huang@rock-chips.com>
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/init.h>
> +#include <linux/kernel.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>

I think this should be

#include <linux/mod_devicetable.h>

> +#include <linux/phy/phy.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
> +#include <linux/regmap.h>
> +#include <linux/reset.h>
> +

[...]

> +static void samsung_mipi_dcphy_bias_block_enable(struct samsung_mipi_dcphy *samsung)
> +{
> +	u32 bias_con2 = 0x3223;
> +
> +	regmap_write(samsung->regmap, BIAS_CON0, 0x0010);
> +	regmap_write(samsung->regmap, BIAS_CON1, 0x0110);
> +	regmap_write(samsung->regmap, BIAS_CON2, bias_con2);
> +
> +	/* default output voltage select:
> +	 * dphy: 400mv
> +	 * cphy: 530mv
> +	 */
> +	regmap_update_bits(samsung->regmap, BIAS_CON4,
> +			   I_MUX_SEL_MASK, I_MUX_SEL_400MV);
> +}
> +
> +static void samsung_mipi_dcphy_bias_block_disable(struct samsung_mipi_dcphy *samsung)
> +{
> +}

uhm? :)

[...]

> +static const struct samsung_mipi_dphy_timing *
> +samsung_mipi_dphy_get_timing(struct samsung_mipi_dcphy *samsung)
> +{
> +	const struct samsung_mipi_dphy_timing *timings;
> +	unsigned int num_timings;
> +	unsigned int lane_mbps = div64_ul(samsung->pll.rate, USEC_PER_SEC);
> +	unsigned int i;
> +
> +	timings = samsung_mipi_dphy_timing_table;
> +	num_timings = ARRAY_SIZE(samsung_mipi_dphy_timing_table);
> +
> +	for (i = num_timings; i > 0; i--)
> +		if (lane_mbps <= timings[i - 1].max_lane_mbps)
> +			break;
> +
> +	if (i == 0)
> +		++i;

I guess you can just do 'for (i = max; i > 1; i--)' instead of
counting to 0 and then go back to 1?

> +
> +	return &timings[i - 1];
> +}

[...]

> +static int samsung_mipi_dphy_power_on(struct samsung_mipi_dcphy *samsung)
> +{
> +	int ret;
> +
> +	reset_control_assert(samsung->m_phy_rst);
> +
> +	samsung_mipi_dcphy_bias_block_enable(samsung);
> +	samsung_mipi_dcphy_pll_configure(samsung);
> +	samsung_mipi_dphy_clk_lane_timing_init(samsung);
> +	samsung_mipi_dphy_data_lane_timing_init(samsung);
> +	ret = samsung_mipi_dcphy_pll_enable(samsung);
> +	if (ret < 0) {
> +		samsung_mipi_dcphy_bias_block_disable(samsung);
> +		return ret;
> +	}
> +
> +	samsung_mipi_dphy_lane_enable(samsung);
> +
> +	reset_control_deassert(samsung->m_phy_rst);
> +
> +	/* The TSKEWCAL maximum is 100 µsec
> +	 * at initial calibration.
> +	 */
> +	usleep_range(100, 110);
> +
> +	return 0;
> +}
> +
> +static int samsung_mipi_dcphy_power_on(struct phy *phy)
> +{
> +	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
> +	enum phy_mode mode = phy_get_mode(phy);
> +
> +	pm_runtime_get_sync(samsung->dev);

This already happened in samsung_mipi_dcphy_init?

> +	reset_control_assert(samsung->apb_rst);
> +	udelay(1);
> +	reset_control_deassert(samsung->apb_rst);
> +
> +	switch (mode) {
> +	case PHY_MODE_MIPI_DPHY:
> +		return samsung_mipi_dphy_power_on(samsung);
> +	default:
> +		/* CSI cphy part to be implemented later */
> +		return -EOPNOTSUPP;
> +	}
> +
> +	return 0;
> +}
> +
> +static int samsung_mipi_dcphy_power_off(struct phy *phy)
> +{
> +	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
> +	enum phy_mode mode = phy_get_mode(phy);
> +
> +	switch (mode) {
> +	case PHY_MODE_MIPI_DPHY:
> +		samsung_mipi_dphy_lane_disable(samsung);
> +		break;
> +	default:
> +		/* CSI cphy part to be implemented later */
> +		return -EOPNOTSUPP;
> +	}
> +
> +	samsung_mipi_dcphy_pll_disable(samsung);
> +	samsung_mipi_dcphy_bias_block_disable(samsung);
> +
> +	pm_runtime_put(samsung->dev);
> +
> +	return 0;
> +}
> +
> +static int samsung_mipi_dcphy_set_mode(struct phy *phy, enum phy_mode mode,
> +				       int submode)
> +{
> +	return 0;
> +}

You can just remove this. phy_set_mode_ext() will return 0 byself if
the callback is NULL.

[...]

> +static int samsung_mipi_dcphy_init(struct phy *phy)
> +{
> +	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
> +
> +	pm_runtime_get_sync(samsung->dev);

return pm_runtime_resume_and_get(samsung->dev);

> +	return 0;
> +}
> +
> +static int samsung_mipi_dcphy_exit(struct phy *phy)
> +{
> +	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
> +
> +	pm_runtime_put(samsung->dev);

return pm_runtime_put(samsung->dev);

> +
> +	return 0;
> +}

[...]

> +static __maybe_unused int samsung_mipi_dcphy_runtime_suspend(struct device *dev)
> +{
> +	struct samsung_mipi_dcphy *samsung = dev_get_drvdata(dev);
> +
> +	clk_disable_unprepare(samsung->pclk);
> +	clk_disable_unprepare(samsung->ref_clk);
> +
> +	return 0;
> +}
> +
> +static __maybe_unused int samsung_mipi_dcphy_runtime_resume(struct device *dev)
> +{
> +	struct samsung_mipi_dcphy *samsung = dev_get_drvdata(dev);
> +
> +	clk_prepare_enable(samsung->pclk);
> +	clk_prepare_enable(samsung->ref_clk);
> +
> +	return 0;
> +}

No error checking for managing the clocks?

[...]

> +static const struct of_device_id samsung_mipi_dcphy_of_match[] = {
> +	{
> +		.compatible = "rockchip,rk3576-mipi-dcphy",
> +		.data = &rk3576_samsung_mipi_dcphy_plat_data,
> +	}, {
> +		.compatible = "rockchip,rk3588-mipi-dcphy",
> +		.data = &rk3588_samsung_mipi_dcphy_plat_data,
> +	},
> +	{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, samsung_mipi_dcphy_of_match);
> +
> +static struct platform_driver samsung_mipi_dcphy_driver = {
> +	.driver = {
> +		.name = "samsung-mipi-dcphy",
> +		.of_match_table	= of_match_ptr(samsung_mipi_dcphy_of_match),

drop of_match_ptr(). The way it is used right now just brings
a compiler warning for CONFIG_OF=n.

> +		.pm = &samsung_mipi_dcphy_pm_ops,
> +	},
> +	.probe	= samsung_mipi_dcphy_probe,
> +};
> +module_platform_driver(samsung_mipi_dcphy_driver);
> +
> +MODULE_AUTHOR("Guochun Huang<hero.huang@rock-chips.com>");

space before <

> +MODULE_DESCRIPTION("Samsung MIPI DCPHY Driver");
> +MODULE_LICENSE("GPL");

Greetings,

-- Sebastian
Re: [PATCH v2 2/2] phy: rockchip: Add Samsung CSI/DSI Combo DCPHY driver
Posted by Heiko Stübner 1 week, 4 days ago
Hi,

> > +static void samsung_mipi_dcphy_bias_block_enable(struct samsung_mipi_dcphy *samsung)
> > +{
> > +	u32 bias_con2 = 0x3223;
> > +
> > +	regmap_write(samsung->regmap, BIAS_CON0, 0x0010);
> > +	regmap_write(samsung->regmap, BIAS_CON1, 0x0110);
> > +	regmap_write(samsung->regmap, BIAS_CON2, bias_con2);
> > +
> > +	/* default output voltage select:
> > +	 * dphy: 400mv
> > +	 * cphy: 530mv
> > +	 */
> > +	regmap_update_bits(samsung->regmap, BIAS_CON4,
> > +			   I_MUX_SEL_MASK, I_MUX_SEL_400MV);
> > +}
> > +
> > +static void samsung_mipi_dcphy_bias_block_disable(struct samsung_mipi_dcphy *samsung)
> > +{
> > +}
> 
> uhm? :)

When there was still the CSI stuff in here, that function still had
content ;-) .

But yeah, if and when that comes back, we can re-add things.


> > +static int samsung_mipi_dcphy_set_mode(struct phy *phy, enum phy_mode mode,
> > +				       int submode)
> > +{
> > +	return 0;
> > +}
> 
> You can just remove this. phy_set_mode_ext() will return 0 byself if
> the callback is NULL.

But it will not set the mode then.

See the part of
	ret = phy->ops->set_mode(phy, mode, submode);
	if (!ret)
		phy->attrs.mode = mode;

Without the set_mode callback phy->attrs.mode will not be set.
And while we don't have anything to do for set_mode itself,
we do need the mipi_dphy mode to be set.


Heiko