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Signed-off-by: SriNavmani A Reviewed-by: Rob Herring (Arm) Signed-off-by: Tzu-Hao Wei --- .../bindings/phy/axiado,ax3000-emmc-phy.yaml | 37 ++++++++++++++++++= ++++ 1 file changed, 37 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/axiado,ax3000-emmc-phy.y= aml b/Documentation/devicetree/bindings/phy/axiado,ax3000-emmc-phy.yaml new file mode 100644 index 0000000000000000000000000000000000000000..61700b80e93f7185e16ca9eab09= 22fe6bb29fe86 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/axiado,ax3000-emmc-phy.yaml @@ -0,0 +1,37 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/axiado,ax3000-emmc-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Axiado AX3000 Arasan eMMC PHY + +maintainers: + - SriNavmani A + - Tzu-Hao Wei + - Prasad Bolisetty + +properties: + compatible: + const: axiado,ax3000-emmc-phy + + reg: + maxItems: 1 + + "#phy-cells": + const: 0 + +required: + - compatible + - reg + - "#phy-cells" + +additionalProperties: false + +examples: + - | + phy@80801c00 { + compatible =3D "axiado,ax3000-emmc-phy"; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: +GSiwcnUSDp4IrpUJlkCN+4u1he6WIMzzGbfPHxN0s3W8WtbInU0b/fcfbD+T3EHVr4V9x7Bp3WXzfghjm2QUSuJNOJRej8Q9xR90ngdYetuR1TnLj+AWHKzGL9aDS4KsB6DMnfP/7hkvlPis2EVLvHLKe9Yzq5M495e6gJVu5Bf5un8Xtj9Qml/xai16Zg6hH61CaSJJ3z7RnnIfrF2yirjDieB4E1vonMy/96BGYcI92D2obBWy+d/ngtkqdrCXrjneYPRWOkgSqQ2uNIwyitDuXo89opJ2ke7wtdIO4kzZgpOIMRTU1CjS94oEdt3aMK3AwPm9ChtEI43bNVES8B2W5W71PGO+CKFZwiieS53m+bp6NfBdCQI92+ALJB1DlPkS3KRWMcCHmdPIVWYj67DILDlj2XWQ5FPk/wloPSI8HF9499dA/KxHMUp2+VD X-OriginatorOrg: axiado.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 May 2026 01:38:47.0640 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fb3d705d-46fd-4b00-e3da-08dea97de2a8 X-MS-Exchange-CrossTenant-Id: ff2db17c-4338-408e-9036-2dee8e3e17d7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=ff2db17c-4338-408e-9036-2dee8e3e17d7;Ip=[64.62.143.114];Helo=[smtp.corp.axiado.com] X-MS-Exchange-CrossTenant-AuthSource: DM2PEPF00003FC3.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV0PR18MB927459 From: SriNavmani A It provides the required configurations for Axiado eMMC PHY driver for HS200 mode. Signed-off-by: SriNavmani A Co-developed-by: Prasad Bolisetty Signed-off-by: Prasad Bolisetty Signed-off-by: Tzu-Hao Wei --- drivers/phy/Kconfig | 1 + drivers/phy/Makefile | 1 + drivers/phy/axiado/Kconfig | 11 ++ drivers/phy/axiado/Makefile | 1 + drivers/phy/axiado/phy-axiado-emmc.c | 217 +++++++++++++++++++++++++++++++= ++++ 5 files changed, 231 insertions(+) diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 678dd0452f0aa0597773433f04d2a9ba77474d2a..b802274ea45a84bd36d7c0b7fb9= 0e368a5c018b4 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -103,6 +103,7 @@ config PHY_NXP_PTN3222 =20 source "drivers/phy/allwinner/Kconfig" source "drivers/phy/amlogic/Kconfig" +source "drivers/phy/axiado/Kconfig" source "drivers/phy/broadcom/Kconfig" source "drivers/phy/cadence/Kconfig" source "drivers/phy/freescale/Kconfig" diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index bfb27fb5a494283d7fd05dd670ebd1b12df8b1a1..f1b9e4a8673bcde3fdc0fdc06a3= deddb5785ced1 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_PHY_AIROHA_PCIE) +=3D phy-airoha-pcie.o obj-$(CONFIG_PHY_NXP_PTN3222) +=3D phy-nxp-ptn3222.o obj-y +=3D allwinner/ \ amlogic/ \ + axiado/ \ broadcom/ \ cadence/ \ freescale/ \ diff --git a/drivers/phy/axiado/Kconfig b/drivers/phy/axiado/Kconfig new file mode 100644 index 0000000000000000000000000000000000000000..d159e0345345987c7f48dcd12d3= 237997735d2b5 --- /dev/null +++ b/drivers/phy/axiado/Kconfig @@ -0,0 +1,11 @@ +# +# PHY drivers for Axiado platforms +# + +config PHY_AX3000_EMMC + tristate "Axiado eMMC PHY driver" + depends on OF && (ARCH_AXIADO || COMPILE_TEST) + select GENERIC_PHY + help + Enables this to support for the AX3000 EMMC PHY driver. + If unsure, say N. diff --git a/drivers/phy/axiado/Makefile b/drivers/phy/axiado/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..1e2b1ba016092eaffdbd7acbd9c= dc8577d79b35c --- /dev/null +++ b/drivers/phy/axiado/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_PHY_AX3000_EMMC) +=3D phy-axiado-emmc.o diff --git a/drivers/phy/axiado/phy-axiado-emmc.c b/drivers/phy/axiado/phy-= axiado-emmc.c new file mode 100644 index 0000000000000000000000000000000000000000..e0e2174776ad027df0a10a8c474= 1b1b4ef9ef40e --- /dev/null +++ b/drivers/phy/axiado/phy-axiado-emmc.c @@ -0,0 +1,217 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Axiado eMMC PHY driver + * + * Copyright (C) 2017 Arasan Chip Systems Inc. + * Copyright (C) 2022-2026 Axiado Corporation (or its affiliates). + * + * Based on Arasan Driver (sdhci-pci-arasan.c) + * sdhci-pci-arasan.c - Driver for Arasan PCI Controller with integrated p= hy. + */ +#include +#include +#include +#include +#include +#include +#include +#include + +/* Arasan eMMC 5.1 - PHY configuration registers */ +#define CAP_REG_IN_S1_MSB 0x04 +#define PHY_CTRL_1 0x38 +#define PHY_CTRL_2 0x3c +#define PHY_CTRL_3 0x40 +#define STATUS 0x50 + +#define DLL_ENBL BIT(26) +#define RTRIM_EN BIT(21) +#define PDB_ENBL BIT(23) +#define RETB_ENBL BIT(1) + +#define REN_STRB BIT(27) +#define REN_CMD_EN GENMASK(20, 12) + +/* Pull-UP Enable on CMD Line */ +#define PU_CMD_EN GENMASK(11, 3) + +/* Selection value for the optimum delay from 1-32 output tap lines */ +#define OTAP_DLY 0x02 +/* DLL charge pump current trim default [1000] */ +#define DLL_TRM_ICP 0x08 +/* Select the frequency range of DLL Operation */ +#define FRQ_SEL 0x01 + +#define OTAP_SEL_MASK GENMASK(10, 7) +#define DLL_TRM_MASK GENMASK(25, 22) +#define DLL_FRQSEL_MASK GENMASK(27, 25) + +#define OTAP_SEL(x) (FIELD_PREP(OTAP_SEL_MASK, x) | OTAPDLY_EN) +#define DLL_TRM(x) (FIELD_PREP(DLL_TRM_MASK, x) | DLL_ENBL) +#define DLL_FRQSEL(x) FIELD_PREP(DLL_FRQSEL_MASK, x) + +#define OTAPDLY_EN BIT(11) + +#define SEL_DLY_RXCLK BIT(18) +#define SEL_DLY_TXCLK BIT(19) + +#define CALDONE_MASK 0x40 +#define DLL_RDY_MASK 0x1 +#define MAX_CLK_BUF0 BIT(20) +#define MAX_CLK_BUF1 BIT(21) +#define MAX_CLK_BUF2 BIT(22) + +#define CLK_MULTIPLIER 0xc008e +#define POLL_TIMEOUT_MS 3000 +#define POLL_DELAY_US 100 + +struct axiado_emmc_phy { + void __iomem *reg_base; + struct device *dev; +}; + +static int axiado_emmc_phy_init(struct phy *phy) +{ + struct axiado_emmc_phy *ax_phy =3D phy_get_drvdata(phy); + struct device *dev =3D ax_phy->dev; + u32 val; + int ret; + + val =3D readl(ax_phy->reg_base + PHY_CTRL_1); + writel(val | RETB_ENBL | RTRIM_EN, ax_phy->reg_base + PHY_CTRL_1); + + val =3D readl(ax_phy->reg_base + PHY_CTRL_3); + writel(val | PDB_ENBL, ax_phy->reg_base + PHY_CTRL_3); + + ret =3D readl_poll_timeout(ax_phy->reg_base + STATUS, val, + val & CALDONE_MASK, POLL_DELAY_US, + POLL_TIMEOUT_MS * 1000); + if (ret) { + dev_err(dev, "PHY calibration timeout\n"); + return ret; + } + + val =3D readl(ax_phy->reg_base + PHY_CTRL_1); + writel(val | REN_CMD_EN | PU_CMD_EN, ax_phy->reg_base + PHY_CTRL_1); + + val =3D readl(ax_phy->reg_base + PHY_CTRL_2); + writel(val | REN_STRB, ax_phy->reg_base + PHY_CTRL_2); + + val =3D readl(ax_phy->reg_base + PHY_CTRL_3); + writel(val | MAX_CLK_BUF0 | MAX_CLK_BUF1 | MAX_CLK_BUF2, + ax_phy->reg_base + PHY_CTRL_3); + + writel(CLK_MULTIPLIER, ax_phy->reg_base + CAP_REG_IN_S1_MSB); + + val =3D readl(ax_phy->reg_base + PHY_CTRL_3); + writel(val | SEL_DLY_RXCLK | SEL_DLY_TXCLK, + ax_phy->reg_base + PHY_CTRL_3); + + return 0; +} + +static int axiado_emmc_phy_power_on(struct phy *phy) +{ + struct axiado_emmc_phy *ax_phy =3D phy_get_drvdata(phy); + struct device *dev =3D ax_phy->dev; + u32 val; + int ret; + + val =3D readl(ax_phy->reg_base + PHY_CTRL_1); + writel(val | RETB_ENBL, ax_phy->reg_base + PHY_CTRL_1); + + val =3D readl(ax_phy->reg_base + PHY_CTRL_3); + writel(val | PDB_ENBL, ax_phy->reg_base + PHY_CTRL_3); + + val =3D readl(ax_phy->reg_base + PHY_CTRL_2); + writel(val | OTAP_SEL(OTAP_DLY), ax_phy->reg_base + PHY_CTRL_2); + + val =3D readl(ax_phy->reg_base + PHY_CTRL_1); + writel(val | DLL_TRM(DLL_TRM_ICP), ax_phy->reg_base + PHY_CTRL_1); + + val =3D readl(ax_phy->reg_base + PHY_CTRL_3); + writel(val | DLL_FRQSEL(FRQ_SEL), ax_phy->reg_base + PHY_CTRL_3); + + ret =3D read_poll_timeout(readl, val, val & DLL_RDY_MASK, POLL_DELAY_US, + POLL_TIMEOUT_MS * 1000, false, + ax_phy->reg_base + STATUS); + if (ret) { + dev_err(dev, "DLL ready timeout\n"); + return ret; + } + + return 0; +} + +static int axiado_emmc_phy_power_off(struct phy *phy) +{ + struct axiado_emmc_phy *ax_phy =3D phy_get_drvdata(phy); + u32 val; + + val =3D readl(ax_phy->reg_base + PHY_CTRL_1); + val &=3D ~(DLL_TRM_MASK | DLL_ENBL); + writel(val, ax_phy->reg_base + PHY_CTRL_1); + + val =3D readl(ax_phy->reg_base + PHY_CTRL_3); + val &=3D ~(DLL_FRQSEL_MASK | PDB_ENBL); + writel(val, ax_phy->reg_base + PHY_CTRL_3); + + return 0; +} + +static const struct phy_ops axiado_emmc_phy_ops =3D { + .init =3D axiado_emmc_phy_init, + .power_on =3D axiado_emmc_phy_power_on, + .power_off =3D axiado_emmc_phy_power_off, + .owner =3D THIS_MODULE, +}; + +static const struct of_device_id axiado_emmc_phy_of_match[] =3D { + { .compatible =3D "axiado,ax3000-emmc-phy" }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, axiado_emmc_phy_of_match); + +static int axiado_emmc_phy_probe(struct platform_device *pdev) +{ + struct axiado_emmc_phy *ax_phy; + struct phy_provider *phy_provider; + struct device *dev =3D &pdev->dev; + struct phy *generic_phy; + + if (!dev->of_node) + return -ENODEV; + + ax_phy =3D devm_kzalloc(dev, sizeof(*ax_phy), GFP_KERNEL); + if (!ax_phy) + return -ENOMEM; + + ax_phy->reg_base =3D devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(ax_phy->reg_base)) + return PTR_ERR(ax_phy->reg_base); + + ax_phy->dev =3D dev; + + generic_phy =3D devm_phy_create(dev, dev->of_node, &axiado_emmc_phy_ops); + if (IS_ERR(generic_phy)) + return dev_err_probe(dev, PTR_ERR(generic_phy), + "failed to create PHY\n"); + + phy_set_drvdata(generic_phy, ax_phy); + phy_provider =3D devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static struct platform_driver axiado_emmc_phy_driver =3D { + .probe =3D axiado_emmc_phy_probe, + .driver =3D { + .name =3D "axiado-emmc-phy", + .of_match_table =3D axiado_emmc_phy_of_match, + }, +}; +module_platform_driver(axiado_emmc_phy_driver); + +MODULE_DESCRIPTION("AX3000 eMMC PHY Driver"); 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Sun, 3 May 2026 18:36:50 -0700 (PDT) From: Tzu-Hao Wei Date: Mon, 04 May 2026 09:38:35 +0800 Subject: [PATCH RESEND v3 4/4] arm64: dts: axiado: Add eMMC PHY node Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260504-axiado-ax3000-add-emmc-phy-driver-support-v3-4-3ab7eb45b0c5@axiado.com> References: <20260504-axiado-ax3000-add-emmc-phy-driver-support-v3-0-3ab7eb45b0c5@axiado.com> In-Reply-To: <20260504-axiado-ax3000-add-emmc-phy-driver-support-v3-0-3ab7eb45b0c5@axiado.com> To: SriNavmani A , Prasad Bolisetty , Vinod Koul , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org, Tzu-Hao Wei X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; 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AX3000 has one eMMC PHY interface. Signed-off-by: SriNavmani A Signed-off-by: Tzu-Hao Wei --- arch/arm64/boot/dts/axiado/ax3000.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/boot/dts/axiado/ax3000.dtsi b/arch/arm64/boot/dts/a= xiado/ax3000.dtsi index 792f52e0c7dd42cbc54b0eb47e25b0fbf1a706b8..ccc8088bd8258cfb666268b14a3= b0716a9ca69f4 100644 --- a/arch/arm64/boot/dts/axiado/ax3000.dtsi +++ b/arch/arm64/boot/dts/axiado/ax3000.dtsi @@ -507,6 +507,13 @@ uart3: serial@80520800 { clocks =3D <&refclk &refclk>; status =3D "disabled"; }; + + emmc_phy: phy@80801c00 { + compatible =3D "axiado,ax3000-emmc-phy"; + reg =3D <0x0 0x80801c00 0x0 0x1000>; + #phy-cells =3D <0>; + status =3D "disabled"; + }; }; =20 timer { --=20 2.34.1