Add support for the display clock controller for display clients to
be able to request for the clocks on QCS615 platform.

Signed-off-by: Taniya Das <quic_tdas@quicinc.com>
---
 drivers/clk/qcom/Kconfig         |   9 +
 drivers/clk/qcom/Makefile        |   1 +
 drivers/clk/qcom/dispcc-qcs615.c | 786 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 796 insertions(+)

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index bdb1c672dd90d96814b214afd234341e37e3c470..d0c815e8e4789958151742a8269d7d6f2245b26c 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -460,6 +460,15 @@ config QCM_DISPCC_2290
 	  Say Y if you want to support display devices and functionality such as
 	  splash screen.
 
+config QCS_DISPCC_615
+	tristate "QCS615 Display Clock Controller"
+	select QCM_GCC_615
+	help
+	  Support for the display clock controller on Qualcomm Technologies, Inc
+	  QCS615 devices.
+	  Say Y if you want to support display devices and functionality such as
+	  splash screen.
+
 config QCS_CAMCC_615
 	tristate "QCS615 Camera Clock Controller"
 	depends on ARM64 || COMPILE_TEST
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index f69c1bc13d3eca1859d9e849399e55175df869c3..f2be0c678127c8f78c5ee708993ebef273d02f19 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -69,6 +69,7 @@ obj-$(CONFIG_QCOM_CLK_RPMH) += clk-rpmh.o
 obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
 obj-$(CONFIG_QCM_GCC_2290) += gcc-qcm2290.o
 obj-$(CONFIG_QCM_DISPCC_2290) += dispcc-qcm2290.o
+obj-$(CONFIG_QCS_DISPCC_615) += dispcc-qcs615.o
 obj-$(CONFIG_QCS_CAMCC_615) += camcc-qcs615.o
 obj-$(CONFIG_QCS_GCC_404) += gcc-qcs404.o
 obj-$(CONFIG_QCS_Q6SSTOP_404) += q6sstop-qcs404.o
diff --git a/drivers/clk/qcom/dispcc-qcs615.c b/drivers/clk/qcom/dispcc-qcs615.c
new file mode 100644
index 0000000000000000000000000000000000000000..cc40a9a8a682ba58d9fa9db21e89a05cc75be8a5
--- /dev/null
+++ b/drivers/clk/qcom/dispcc-qcs615.c
@@ -0,0 +1,786 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,qcs615-dispcc.h>
+
+#include "clk-alpha-pll.h"
+#include "clk-branch.h"
+#include "clk-pll.h"
+#include "clk-rcg.h"
+#include "clk-regmap.h"
+#include "clk-regmap-divider.h"
+#include "clk-regmap-mux.h"
+#include "common.h"
+#include "gdsc.h"
+#include "reset.h"
+
+enum {
+	DT_BI_TCXO,
+	DT_GPLL0,
+	DT_DSI0_PHY_PLL_OUT_BYTECLK,
+	DT_DSI0_PHY_PLL_OUT_DSICLK,
+	DT_DSI1_PHY_PLL_OUT_DSICLK,
+	DT_DP_PHY_PLL_LINK_CLK,
+	DT_DP_PHY_PLL_VCO_DIV_CLK,
+};
+
+enum {
+	P_BI_TCXO,
+	P_DISP_CC_PLL0_OUT_MAIN,
+	P_DP_PHY_PLL_LINK_CLK,
+	P_DP_PHY_PLL_VCO_DIV_CLK,
+	P_DSI0_PHY_PLL_OUT_BYTECLK,
+	P_DSI0_PHY_PLL_OUT_DSICLK,
+	P_DSI1_PHY_PLL_OUT_DSICLK,
+	P_GPLL0_OUT_MAIN,
+};
+
+static const struct pll_vco disp_cc_pll_vco[] = {
+	{ 500000000, 1000000000, 2 },
+};
+
+/* 576MHz configuration */
+static struct alpha_pll_config disp_cc_pll0_config = {
+	.l = 0x1E,
+	.vco_val = 0x2 << 20,
+	.vco_mask = 0x3 << 20,
+	.main_output_mask = BIT(0),
+	.config_ctl_val = 0x4001055b,
+	.test_ctl_hi_val = 0x1,
+	.test_ctl_hi_mask = 0x1,
+};
+
+static struct clk_alpha_pll disp_cc_pll0 = {
+	.offset = 0x0,
+	.vco_table = disp_cc_pll_vco,
+	.num_vco = ARRAY_SIZE(disp_cc_pll_vco),
+	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT],
+	.clkr = {
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_pll0",
+			.parent_data = &(const struct clk_parent_data) {
+				.index = DT_BI_TCXO,
+			},
+			.num_parents = 1,
+			.ops = &clk_alpha_pll_slew_ops,
+		},
+	},
+};
+
+static const struct parent_map disp_cc_parent_map_0[] = {
+	{ P_BI_TCXO, 0 },
+	{ P_DP_PHY_PLL_LINK_CLK, 1 },
+	{ P_DP_PHY_PLL_VCO_DIV_CLK, 2 },
+};
+
+static const struct clk_parent_data disp_cc_parent_data_0[] = {
+	{ .index = DT_BI_TCXO },
+	{ .index = DT_DP_PHY_PLL_LINK_CLK },
+	{ .index = DT_DP_PHY_PLL_VCO_DIV_CLK },
+};
+
+static const struct parent_map disp_cc_parent_map_1[] = {
+	{ P_BI_TCXO, 0 },
+};
+
+static const struct clk_parent_data disp_cc_parent_data_1[] = {
+	{ .index = DT_BI_TCXO },
+};
+
+static const struct parent_map disp_cc_parent_map_2[] = {
+	{ P_BI_TCXO, 0 },
+	{ P_DSI0_PHY_PLL_OUT_BYTECLK, 1 },
+};
+
+static const struct clk_parent_data disp_cc_parent_data_2[] = {
+	{ .index = DT_BI_TCXO },
+	{ .index = DT_DSI0_PHY_PLL_OUT_BYTECLK },
+};
+
+static const struct parent_map disp_cc_parent_map_3[] = {
+	{ P_BI_TCXO, 0 },
+	{ P_DISP_CC_PLL0_OUT_MAIN, 1 },
+	{ P_GPLL0_OUT_MAIN, 4 },
+};
+
+static const struct clk_parent_data disp_cc_parent_data_3[] = {
+	{ .index = DT_BI_TCXO },
+	{ .hw = &disp_cc_pll0.clkr.hw },
+	{ .index = DT_GPLL0 },
+};
+
+static const struct parent_map disp_cc_parent_map_4[] = {
+	{ P_BI_TCXO, 0 },
+	{ P_GPLL0_OUT_MAIN, 4 },
+};
+
+static const struct clk_parent_data disp_cc_parent_data_4[] = {
+	{ .index = DT_BI_TCXO },
+	{ .index = DT_GPLL0 },
+};
+
+static const struct parent_map disp_cc_parent_map_5[] = {
+	{ P_BI_TCXO, 0 },
+	{ P_DSI0_PHY_PLL_OUT_DSICLK, 1 },
+	{ P_DSI1_PHY_PLL_OUT_DSICLK, 2 },
+};
+
+static const struct clk_parent_data disp_cc_parent_data_5[] = {
+	{ .index = DT_BI_TCXO },
+	{ .index = DT_DSI0_PHY_PLL_OUT_DSICLK },
+	{ .index = DT_DSI1_PHY_PLL_OUT_DSICLK },
+};
+
+static const struct freq_tbl ftbl_disp_cc_mdss_ahb_clk_src[] = {
+	F(19200000, P_BI_TCXO, 1, 0, 0),
+	F(37500000, P_GPLL0_OUT_MAIN, 8, 0, 0),
+	F(75000000, P_GPLL0_OUT_MAIN, 4, 0, 0),
+	{ }
+};
+
+static struct clk_rcg2 disp_cc_mdss_ahb_clk_src = {
+	.cmd_rcgr = 0x2170,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_4,
+	.freq_tbl = ftbl_disp_cc_mdss_ahb_clk_src,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_ahb_clk_src",
+		.parent_data = disp_cc_parent_data_4,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_4),
+		.ops = &clk_rcg2_shared_ops,
+	},
+};
+
+static struct clk_rcg2 disp_cc_mdss_byte0_clk_src = {
+	.cmd_rcgr = 0x20c0,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_2,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_byte0_clk_src",
+		.parent_data = disp_cc_parent_data_2,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_2),
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_byte2_ops,
+	},
+};
+
+static const struct freq_tbl ftbl_disp_cc_mdss_dp_aux1_clk_src[] = {
+	F(19200000, P_BI_TCXO, 1, 0, 0),
+	{ }
+};
+
+static struct clk_rcg2 disp_cc_mdss_dp_aux_clk_src = {
+	.cmd_rcgr = 0x2158,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_1,
+	.freq_tbl = ftbl_disp_cc_mdss_dp_aux1_clk_src,
+	.clkr.hw.init = &(struct clk_init_data){
+		.name = "disp_cc_mdss_dp_aux_clk_src",
+		.parent_data = disp_cc_parent_data_1,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_1),
+		.ops = &clk_rcg2_shared_ops,
+	},
+};
+
+static struct clk_rcg2 disp_cc_mdss_dp_crypto_clk_src = {
+	.cmd_rcgr = 0x2110,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_0,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_dp_crypto_clk_src",
+		.parent_data = disp_cc_parent_data_0,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_0),
+		.ops = &clk_byte2_ops,
+	},
+};
+
+static struct clk_rcg2 disp_cc_mdss_dp_link_clk_src = {
+	.cmd_rcgr = 0x20f4,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_0,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_dp_link_clk_src",
+		.parent_data = disp_cc_parent_data_0,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_0),
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_byte2_ops,
+	},
+};
+
+static struct clk_rcg2 disp_cc_mdss_dp_pixel1_clk_src = {
+	.cmd_rcgr = 0x2140,
+	.mnd_width = 16,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_0,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_dp_pixel1_clk_src",
+		.parent_data = disp_cc_parent_data_0,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_0),
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_dp_ops,
+	},
+};
+
+static struct clk_rcg2 disp_cc_mdss_dp_pixel_clk_src = {
+	.cmd_rcgr = 0x2128,
+	.mnd_width = 16,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_0,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_dp_pixel_clk_src",
+		.parent_data = disp_cc_parent_data_0,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_0),
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_dp_ops,
+	},
+};
+
+static struct clk_rcg2 disp_cc_mdss_esc0_clk_src = {
+	.cmd_rcgr = 0x20dc,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_2,
+	.freq_tbl = ftbl_disp_cc_mdss_dp_aux1_clk_src,
+	.clkr.hw.init = &(struct clk_init_data){
+		.name = "disp_cc_mdss_esc0_clk_src",
+		.parent_data = disp_cc_parent_data_2,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_2),
+		.ops = &clk_rcg2_ops,
+	},
+};
+
+static const struct freq_tbl ftbl_disp_cc_mdss_mdp_clk_src[] = {
+	F(19200000, P_BI_TCXO, 1, 0, 0),
+	F(192000000, P_DISP_CC_PLL0_OUT_MAIN, 3, 0, 0),
+	F(256000000, P_DISP_CC_PLL0_OUT_MAIN, 3, 0, 0),
+	F(307000000, P_DISP_CC_PLL0_OUT_MAIN, 3, 0, 0),
+	{ }
+};
+
+static struct clk_rcg2 disp_cc_mdss_mdp_clk_src = {
+	.cmd_rcgr = 0x2078,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_3,
+	.freq_tbl = ftbl_disp_cc_mdss_mdp_clk_src,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_mdp_clk_src",
+		.parent_data = disp_cc_parent_data_3,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_3),
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_rcg2_shared_ops,
+	},
+};
+
+static struct clk_rcg2 disp_cc_mdss_pclk0_clk_src = {
+	.cmd_rcgr = 0x2060,
+	.mnd_width = 8,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_5,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_pclk0_clk_src",
+		.parent_data = disp_cc_parent_data_5,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_5),
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_pixel_ops,
+	},
+};
+
+static struct clk_rcg2 disp_cc_mdss_rot_clk_src = {
+	.cmd_rcgr = 0x2090,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_3,
+	.freq_tbl = ftbl_disp_cc_mdss_mdp_clk_src,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_rot_clk_src",
+		.parent_data = disp_cc_parent_data_3,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_3),
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_rcg2_shared_ops,
+	},
+};
+
+static struct clk_rcg2 disp_cc_mdss_vsync_clk_src = {
+	.cmd_rcgr = 0x20a8,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = disp_cc_parent_map_1,
+	.freq_tbl = ftbl_disp_cc_mdss_dp_aux1_clk_src,
+	.clkr.hw.init = &(struct clk_init_data){
+		.name = "disp_cc_mdss_vsync_clk_src",
+		.parent_data = disp_cc_parent_data_1,
+		.num_parents = ARRAY_SIZE(disp_cc_parent_data_1),
+		.ops = &clk_rcg2_shared_ops,
+	},
+};
+
+static struct clk_regmap_div disp_cc_mdss_byte0_div_clk_src = {
+	.reg = 0x20d8,
+	.shift = 0,
+	.width = 2,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_byte0_div_clk_src",
+		.parent_hws = (const struct clk_hw*[]) {
+			&disp_cc_mdss_byte0_clk_src.clkr.hw,
+		},
+		.num_parents = 1,
+		.ops = &clk_regmap_div_ro_ops,
+	},
+};
+
+static struct clk_regmap_div disp_cc_mdss_dp_link_div_clk_src = {
+	.reg = 0x210c,
+	.shift = 0,
+	.width = 2,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "disp_cc_mdss_dp_link_div_clk_src",
+		.parent_hws = (const struct clk_hw*[]) {
+			&disp_cc_mdss_dp_link_clk_src.clkr.hw,
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_regmap_div_ro_ops,
+	},
+};
+
+static struct clk_branch disp_cc_mdss_ahb_clk = {
+	.halt_reg = 0x2048,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2048,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_ahb_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_ahb_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_byte0_clk = {
+	.halt_reg = 0x2024,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2024,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_byte0_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_byte0_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_byte0_intf_clk = {
+	.halt_reg = 0x2028,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2028,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_byte0_intf_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_byte0_div_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_dp_aux_clk = {
+	.halt_reg = 0x2044,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2044,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_dp_aux_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_dp_aux_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_dp_crypto_clk = {
+	.halt_reg = 0x2038,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2038,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_dp_crypto_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_dp_crypto_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_dp_link_clk = {
+	.halt_reg = 0x2030,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2030,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_dp_link_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_dp_link_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_dp_link_intf_clk = {
+	.halt_reg = 0x2034,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2034,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_dp_link_intf_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_dp_link_div_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_dp_pixel1_clk = {
+	.halt_reg = 0x2040,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2040,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_dp_pixel1_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_dp_pixel1_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_dp_pixel_clk = {
+	.halt_reg = 0x203c,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x203c,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_dp_pixel_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_dp_pixel_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_esc0_clk = {
+	.halt_reg = 0x202c,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x202c,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_esc0_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_esc0_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_mdp_clk = {
+	.halt_reg = 0x2008,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2008,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_mdp_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_mdp_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_mdp_lut_clk = {
+	.halt_reg = 0x2018,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2018,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_mdp_lut_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_mdp_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_non_gdsc_ahb_clk = {
+	.halt_reg = 0x4004,
+	.halt_check = BRANCH_HALT_VOTED,
+	.clkr = {
+		.enable_reg = 0x4004,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_non_gdsc_ahb_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_ahb_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_pclk0_clk = {
+	.halt_reg = 0x2004,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2004,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_pclk0_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_pclk0_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_rot_clk = {
+	.halt_reg = 0x2010,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2010,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_rot_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_rot_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_rscc_ahb_clk = {
+	.halt_reg = 0x400c,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x400c,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_rscc_ahb_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_ahb_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_rscc_vsync_clk = {
+	.halt_reg = 0x4008,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x4008,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_rscc_vsync_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_vsync_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch disp_cc_mdss_vsync_clk = {
+	.halt_reg = 0x2020,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2020,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "disp_cc_mdss_vsync_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&disp_cc_mdss_vsync_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct gdsc mdss_core_gdsc = {
+	.gdscr = 0x3000,
+	.en_rest_wait_val = 0x2,
+	.en_few_wait_val = 0x2,
+	.clk_dis_wait_val = 0xf,
+	.pd = {
+		.name = "mdss_core_gdsc",
+	},
+	.pwrsts = PWRSTS_OFF_ON,
+	.flags = HW_CTRL | POLL_CFG_GDSCR,
+};
+
+static struct clk_regmap *disp_cc_qcs615_clocks[] = {
+	[DISP_CC_MDSS_AHB_CLK] = &disp_cc_mdss_ahb_clk.clkr,
+	[DISP_CC_MDSS_AHB_CLK_SRC] = &disp_cc_mdss_ahb_clk_src.clkr,
+	[DISP_CC_MDSS_BYTE0_CLK] = &disp_cc_mdss_byte0_clk.clkr,
+	[DISP_CC_MDSS_BYTE0_CLK_SRC] = &disp_cc_mdss_byte0_clk_src.clkr,
+	[DISP_CC_MDSS_BYTE0_DIV_CLK_SRC] = &disp_cc_mdss_byte0_div_clk_src.clkr,
+	[DISP_CC_MDSS_BYTE0_INTF_CLK] = &disp_cc_mdss_byte0_intf_clk.clkr,
+	[DISP_CC_MDSS_DP_AUX_CLK] = &disp_cc_mdss_dp_aux_clk.clkr,
+	[DISP_CC_MDSS_DP_AUX_CLK_SRC] = &disp_cc_mdss_dp_aux_clk_src.clkr,
+	[DISP_CC_MDSS_DP_CRYPTO_CLK] = &disp_cc_mdss_dp_crypto_clk.clkr,
+	[DISP_CC_MDSS_DP_CRYPTO_CLK_SRC] = &disp_cc_mdss_dp_crypto_clk_src.clkr,
+	[DISP_CC_MDSS_DP_LINK_CLK] = &disp_cc_mdss_dp_link_clk.clkr,
+	[DISP_CC_MDSS_DP_LINK_CLK_SRC] = &disp_cc_mdss_dp_link_clk_src.clkr,
+	[DISP_CC_MDSS_DP_LINK_DIV_CLK_SRC] = &disp_cc_mdss_dp_link_div_clk_src.clkr,
+	[DISP_CC_MDSS_DP_LINK_INTF_CLK] = &disp_cc_mdss_dp_link_intf_clk.clkr,
+	[DISP_CC_MDSS_DP_PIXEL1_CLK] = &disp_cc_mdss_dp_pixel1_clk.clkr,
+	[DISP_CC_MDSS_DP_PIXEL1_CLK_SRC] = &disp_cc_mdss_dp_pixel1_clk_src.clkr,
+	[DISP_CC_MDSS_DP_PIXEL_CLK] = &disp_cc_mdss_dp_pixel_clk.clkr,
+	[DISP_CC_MDSS_DP_PIXEL_CLK_SRC] = &disp_cc_mdss_dp_pixel_clk_src.clkr,
+	[DISP_CC_MDSS_ESC0_CLK] = &disp_cc_mdss_esc0_clk.clkr,
+	[DISP_CC_MDSS_ESC0_CLK_SRC] = &disp_cc_mdss_esc0_clk_src.clkr,
+	[DISP_CC_MDSS_MDP_CLK] = &disp_cc_mdss_mdp_clk.clkr,
+	[DISP_CC_MDSS_MDP_CLK_SRC] = &disp_cc_mdss_mdp_clk_src.clkr,
+	[DISP_CC_MDSS_MDP_LUT_CLK] = &disp_cc_mdss_mdp_lut_clk.clkr,
+	[DISP_CC_MDSS_NON_GDSC_AHB_CLK] = &disp_cc_mdss_non_gdsc_ahb_clk.clkr,
+	[DISP_CC_MDSS_PCLK0_CLK] = &disp_cc_mdss_pclk0_clk.clkr,
+	[DISP_CC_MDSS_PCLK0_CLK_SRC] = &disp_cc_mdss_pclk0_clk_src.clkr,
+	[DISP_CC_MDSS_ROT_CLK] = &disp_cc_mdss_rot_clk.clkr,
+	[DISP_CC_MDSS_ROT_CLK_SRC] = &disp_cc_mdss_rot_clk_src.clkr,
+	[DISP_CC_MDSS_RSCC_AHB_CLK] = &disp_cc_mdss_rscc_ahb_clk.clkr,
+	[DISP_CC_MDSS_RSCC_VSYNC_CLK] = &disp_cc_mdss_rscc_vsync_clk.clkr,
+	[DISP_CC_MDSS_VSYNC_CLK] = &disp_cc_mdss_vsync_clk.clkr,
+	[DISP_CC_MDSS_VSYNC_CLK_SRC] = &disp_cc_mdss_vsync_clk_src.clkr,
+	[DISP_CC_PLL0] = &disp_cc_pll0.clkr,
+};
+
+static struct gdsc *disp_cc_qcs615_gdscs[] = {
+	[MDSS_CORE_GDSC] = &mdss_core_gdsc,
+};
+
+static const struct regmap_config disp_cc_qcs615_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.max_register = 0x10000,
+	.fast_io = true,
+};
+
+static const struct qcom_cc_desc disp_cc_qcs615_desc = {
+	.config = &disp_cc_qcs615_regmap_config,
+	.clks = disp_cc_qcs615_clocks,
+	.num_clks = ARRAY_SIZE(disp_cc_qcs615_clocks),
+	.gdscs = disp_cc_qcs615_gdscs,
+	.num_gdscs = ARRAY_SIZE(disp_cc_qcs615_gdscs),
+};
+
+static const struct of_device_id disp_cc_qcs615_match_table[] = {
+	{ .compatible = "qcom,qcs615-dispcc" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, disp_cc_qcs615_match_table);
+
+static int disp_cc_qcs615_probe(struct platform_device *pdev)
+{
+	struct regmap *regmap;
+
+	regmap = qcom_cc_map(pdev, &disp_cc_qcs615_desc);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	clk_alpha_pll_configure(&disp_cc_pll0, regmap, &disp_cc_pll0_config);
+
+	/* Keep some clocks always enabled */
+	qcom_branch_set_clk_en(regmap, 0x6054); /* DISP_CC_XO_CLK */
+
+	return qcom_cc_really_probe(&pdev->dev, &disp_cc_qcs615_desc, regmap);
+}
+
+static struct platform_driver disp_cc_qcs615_driver = {
+	.probe = disp_cc_qcs615_probe,
+	.driver = {
+		.name = "dispcc-qcs615",
+		.of_match_table = disp_cc_qcs615_match_table,
+	},
+};
+
+module_platform_driver(disp_cc_qcs615_driver);
+
+MODULE_DESCRIPTION("QTI DISPCC QCS615 Driver");
+MODULE_LICENSE("GPL");

-- 
2.45.2

On Sat, Oct 19, 2024 at 12:45:42AM +0530, Taniya Das wrote:
> Add support for the display clock controller for display clients to
> be able to request for the clocks on QCS615 platform.
> 
> Signed-off-by: Taniya Das <quic_tdas@quicinc.com>
> ---
>  drivers/clk/qcom/Kconfig         |   9 +
>  drivers/clk/qcom/Makefile        |   1 +
>  drivers/clk/qcom/dispcc-qcs615.c | 786 +++++++++++++++++++++++++++++++++++++++
>  3 files changed, 796 insertions(+)
> 
> diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
> index bdb1c672dd90d96814b214afd234341e37e3c470..d0c815e8e4789958151742a8269d7d6f2245b26c 100644
> --- a/drivers/clk/qcom/Kconfig
> +++ b/drivers/clk/qcom/Kconfig
> @@ -460,6 +460,15 @@ config QCM_DISPCC_2290
>  	  Say Y if you want to support display devices and functionality such as
>  	  splash screen.
>  
> +config QCS_DISPCC_615
> +	tristate "QCS615 Display Clock Controller"
> +	select QCM_GCC_615
> +	help
> +	  Support for the display clock controller on Qualcomm Technologies, Inc
> +	  QCS615 devices.
> +	  Say Y if you want to support display devices and functionality such as
> +	  splash screen.
> +
>  config QCS_CAMCC_615
>  	tristate "QCS615 Camera Clock Controller"
>  	depends on ARM64 || COMPILE_TEST
> diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
> index f69c1bc13d3eca1859d9e849399e55175df869c3..f2be0c678127c8f78c5ee708993ebef273d02f19 100644
> --- a/drivers/clk/qcom/Makefile
> +++ b/drivers/clk/qcom/Makefile
> @@ -69,6 +69,7 @@ obj-$(CONFIG_QCOM_CLK_RPMH) += clk-rpmh.o
>  obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
>  obj-$(CONFIG_QCM_GCC_2290) += gcc-qcm2290.o
>  obj-$(CONFIG_QCM_DISPCC_2290) += dispcc-qcm2290.o
> +obj-$(CONFIG_QCS_DISPCC_615) += dispcc-qcs615.o
>  obj-$(CONFIG_QCS_CAMCC_615) += camcc-qcs615.o
>  obj-$(CONFIG_QCS_GCC_404) += gcc-qcs404.o
>  obj-$(CONFIG_QCS_Q6SSTOP_404) += q6sstop-qcs404.o
> diff --git a/drivers/clk/qcom/dispcc-qcs615.c b/drivers/clk/qcom/dispcc-qcs615.c
> new file mode 100644
> index 0000000000000000000000000000000000000000..cc40a9a8a682ba58d9fa9db21e89a05cc75be8a5
> --- /dev/null
> +++ b/drivers/clk/qcom/dispcc-qcs615.c
> @@ -0,0 +1,786 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/module.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/regmap.h>
> +
> +#include <dt-bindings/clock/qcom,qcs615-dispcc.h>
> +
> +#include "clk-alpha-pll.h"
> +#include "clk-branch.h"
> +#include "clk-pll.h"
> +#include "clk-rcg.h"
> +#include "clk-regmap.h"
> +#include "clk-regmap-divider.h"
> +#include "clk-regmap-mux.h"
> +#include "common.h"
> +#include "gdsc.h"
> +#include "reset.h"
> +
> +enum {
> +	DT_BI_TCXO,
> +	DT_GPLL0,
> +	DT_DSI0_PHY_PLL_OUT_BYTECLK,
> +	DT_DSI0_PHY_PLL_OUT_DSICLK,
> +	DT_DSI1_PHY_PLL_OUT_DSICLK,

Is there a DSI 1 PLL on this platform?

> +	DT_DP_PHY_PLL_LINK_CLK,
> +	DT_DP_PHY_PLL_VCO_DIV_CLK,
> +};
> +
> +enum {
> +	P_BI_TCXO,
> +	P_DISP_CC_PLL0_OUT_MAIN,
> +	P_DP_PHY_PLL_LINK_CLK,
> +	P_DP_PHY_PLL_VCO_DIV_CLK,
> +	P_DSI0_PHY_PLL_OUT_BYTECLK,
> +	P_DSI0_PHY_PLL_OUT_DSICLK,
> +	P_DSI1_PHY_PLL_OUT_DSICLK,
> +	P_GPLL0_OUT_MAIN,
> +};
> +

-- 
With best wishes
Dmitry

On 10/19/2024 1:55 AM, Dmitry Baryshkov wrote:
>> #include "common.h"
>> +#include "gdsc.h"
>> +#include "reset.h"
>> +
>> +enum {
>> +	DT_BI_TCXO,
>> +	DT_GPLL0,
>> +	DT_DSI0_PHY_PLL_OUT_BYTECLK,
>> +	DT_DSI0_PHY_PLL_OUT_DSICLK,
>> +	DT_DSI1_PHY_PLL_OUT_DSICLK,
> Is there a DSI 1 PLL on this platform?

As per the design of the clock controller it has a DSI1 port.

-- 
Thanks & Regards,
Taniya Das.

On Wed, 30 Oct 2024 at 19:59, Taniya Das <quic_tdas@quicinc.com> wrote:
>
>
>
> On 10/19/2024 1:55 AM, Dmitry Baryshkov wrote:
> >> #include "common.h"
> >> +#include "gdsc.h"
> >> +#include "reset.h"
> >> +
> >> +enum {
> >> +    DT_BI_TCXO,
> >> +    DT_GPLL0,
> >> +    DT_DSI0_PHY_PLL_OUT_BYTECLK,
> >> +    DT_DSI0_PHY_PLL_OUT_DSICLK,
> >> +    DT_DSI1_PHY_PLL_OUT_DSICLK,
> > Is there a DSI 1 PLL on this platform?
>
> As per the design of the clock controller it has a DSI1 port.

It's just surprising to have the DSI1 DSICLK and not the BYTECLK. But
if you say so, it's fine.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry