[PATCH v3 04/15] arm64: dts: freescale: imx93-phycore-som: Enhance eMMC pinctrl

[Primoz Fiser]

Improve eMMC on phyCORE-i.MX93 SOM by adding 100MHz and 200MHz pinctrl
modes. This enables to use eMMC at enhanced data rates (e.g. HS400).

While at it, apply a workaround for the i.MX93 chip errata ERR052021.

Signed-off-by: Primoz Fiser <primoz.fiser at norik.com>
---
Changes in v3:
- no changes

 .../boot/dts/freescale/imx93-phycore-som.dtsi | 57 +++++++++++++++----
 1 file changed, 47 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
index 06a9e674e338..663530a7e2bb 100644
--- a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
@@ -166,8 +166,10 @@ eeprom at 50 {
 
 /* eMMC */
 &usdhc1 {
-	pinctrl-names = "default";
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
 	pinctrl-0 = <&pinctrl_usdhc1>;
+	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
+	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
 	bus-width = <8>;
 	non-removable;
 	status = "okay";
@@ -213,18 +215,53 @@ MX93_PAD_ENET2_RD3__GPIO4_IO27		0x31e
 		>;
 	};
 
+	/* need to config the SION for data and cmd pad, refer to ERR052021 */
 	pinctrl_usdhc1: usdhc1grp {
 		fsl,pins = <
 			MX93_PAD_SD1_CLK__USDHC1_CLK		0x179e
-			MX93_PAD_SD1_CMD__USDHC1_CMD		0x1386
-			MX93_PAD_SD1_DATA0__USDHC1_DATA0	0x138e
-			MX93_PAD_SD1_DATA1__USDHC1_DATA1	0x1386
-			MX93_PAD_SD1_DATA2__USDHC1_DATA2	0x138e
-			MX93_PAD_SD1_DATA3__USDHC1_DATA3	0x1386
-			MX93_PAD_SD1_DATA4__USDHC1_DATA4	0x1386
-			MX93_PAD_SD1_DATA5__USDHC1_DATA5	0x1386
-			MX93_PAD_SD1_DATA6__USDHC1_DATA6	0x1386
-			MX93_PAD_SD1_DATA7__USDHC1_DATA7	0x1386
+			MX93_PAD_SD1_CMD__USDHC1_CMD		0x40001386
+			MX93_PAD_SD1_DATA0__USDHC1_DATA0	0x4000138e
+			MX93_PAD_SD1_DATA1__USDHC1_DATA1	0x40001386
+			MX93_PAD_SD1_DATA2__USDHC1_DATA2	0x4000138e
+			MX93_PAD_SD1_DATA3__USDHC1_DATA3	0x40001386
+			MX93_PAD_SD1_DATA4__USDHC1_DATA4	0x40001386
+			MX93_PAD_SD1_DATA5__USDHC1_DATA5	0x40001386
+			MX93_PAD_SD1_DATA6__USDHC1_DATA6	0x40001386
+			MX93_PAD_SD1_DATA7__USDHC1_DATA7	0x40001386
+			MX93_PAD_SD1_STROBE__USDHC1_STROBE	0x179e
+		>;
+	};
+
+	/* need to config the SION for data and cmd pad, refer to ERR052021 */
+	pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
+		fsl,pins = <
+			MX93_PAD_SD1_CLK__USDHC1_CLK		0x17be
+			MX93_PAD_SD1_CMD__USDHC1_CMD		0x4000139e
+			MX93_PAD_SD1_DATA0__USDHC1_DATA0	0x4000138e
+			MX93_PAD_SD1_DATA1__USDHC1_DATA1	0x4000139e
+			MX93_PAD_SD1_DATA2__USDHC1_DATA2	0x400013be
+			MX93_PAD_SD1_DATA3__USDHC1_DATA3	0x4000139e
+			MX93_PAD_SD1_DATA4__USDHC1_DATA4	0x4000139e
+			MX93_PAD_SD1_DATA5__USDHC1_DATA5	0x4000139e
+			MX93_PAD_SD1_DATA6__USDHC1_DATA6	0x4000139e
+			MX93_PAD_SD1_DATA7__USDHC1_DATA7	0x4000139e
+			MX93_PAD_SD1_STROBE__USDHC1_STROBE	0x179e
+		>;
+	};
+
+	/* need to config the SION for data and cmd pad, refer to ERR052021 */
+	pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
+		fsl,pins = <
+			MX93_PAD_SD1_CLK__USDHC1_CLK		0x17be
+			MX93_PAD_SD1_CMD__USDHC1_CMD		0x4000139e
+			MX93_PAD_SD1_DATA0__USDHC1_DATA0	0x4000139e
+			MX93_PAD_SD1_DATA1__USDHC1_DATA1	0x400013be
+			MX93_PAD_SD1_DATA2__USDHC1_DATA2	0x400013be
+			MX93_PAD_SD1_DATA3__USDHC1_DATA3	0x400013be
+			MX93_PAD_SD1_DATA4__USDHC1_DATA4	0x400013be
+			MX93_PAD_SD1_DATA5__USDHC1_DATA5	0x400013be
+			MX93_PAD_SD1_DATA6__USDHC1_DATA6	0x400013be
+			MX93_PAD_SD1_DATA7__USDHC1_DATA7	0x400013be
 			MX93_PAD_SD1_STROBE__USDHC1_STROBE	0x179e
 		>;
 	};
-- 
2.34.1