ARM: dts: stm32: update eMMC configuration for stm32mp157c-ev1

Update the sdmmc2 node for eMMC support on eval board stm32mp157c-ev1.
- update slew-rate for pin configuration
- update "vqmmc-supply"
- remove "st,sig-dir"
- add mandatory "pinctrl-names"
- add "mmc-ddr-3_3v"

This patch solve the eMMC detection issue for command "mmc dev 1".
Signed-off-by: NPatrick Delaunay <patrick.delaunay@st.com>

arch/arm/dts/stm32mp157-pinctrl.dtsi

@@ -812,31 +812,80 @@
 			};
 
 			sdmmc2_b4_pins_a: sdmmc2-b4-0 {
-				pins {
+				pins1 {
 					pinmux = <STM32_PINMUX('B', 14, AF9)>, /* SDMMC2_D0 */
 						 <STM32_PINMUX('B', 15, AF9)>, /* SDMMC2_D1 */
 						 <STM32_PINMUX('B', 3, AF9)>, /* SDMMC2_D2 */
 						 <STM32_PINMUX('B', 4, AF9)>, /* SDMMC2_D3 */
-						 <STM32_PINMUX('E', 3, AF9)>, /* SDMMC2_CK */
 						 <STM32_PINMUX('G', 6, AF10)>; /* SDMMC2_CMD */
-					slew-rate = <3>;
+					slew-rate = <1>;
+					drive-push-pull;
+					bias-pull-up;
+				};
+				pins2 {
+					pinmux = <STM32_PINMUX('E', 3, AF9)>; /* SDMMC2_CK */
+					slew-rate = <2>;
 					drive-push-pull;
 					bias-pull-up;
 				};
 			};
 
+			sdmmc2_b4_od_pins_a: sdmmc2-b4-od-0 {
+				pins1 {
+					pinmux = <STM32_PINMUX('B', 14, AF9)>, /* SDMMC2_D0 */
+						 <STM32_PINMUX('B', 15, AF9)>, /* SDMMC2_D1 */
+						 <STM32_PINMUX('B', 3, AF9)>, /* SDMMC2_D2 */
+						 <STM32_PINMUX('B', 4, AF9)>; /* SDMMC2_D3 */
+					slew-rate = <1>;
+					drive-push-pull;
+					bias-pull-up;
+				};
+				pins2 {
+					pinmux = <STM32_PINMUX('E', 3, AF9)>; /* SDMMC2_CK */
+					slew-rate = <2>;
+					drive-push-pull;
+					bias-pull-up;
+				};
+				pins3 {
+					pinmux = <STM32_PINMUX('G', 6, AF10)>; /* SDMMC2_CMD */
+					slew-rate = <1>;
+					drive-open-drain;
+					bias-pull-up;
+				};
+			};
+
+			sdmmc2_b4_sleep_pins_a: sdmmc2-b4-sleep-0 {
+				pins {
+					pinmux = <STM32_PINMUX('B', 14, ANALOG)>, /* SDMMC2_D0 */
+						 <STM32_PINMUX('B', 15, ANALOG)>, /* SDMMC2_D1 */
+						 <STM32_PINMUX('B', 3, ANALOG)>, /* SDMMC2_D2 */
+						 <STM32_PINMUX('B', 4, ANALOG)>, /* SDMMC2_D3 */
+						 <STM32_PINMUX('E', 3, ANALOG)>, /* SDMMC2_CK */
+						 <STM32_PINMUX('G', 6, ANALOG)>; /* SDMMC2_CMD */
+				};
+			};
+
 			sdmmc2_d47_pins_a: sdmmc2-d47-0 {
 				pins {
 					pinmux = <STM32_PINMUX('A', 8, AF9)>, /* SDMMC2_D4 */
 						 <STM32_PINMUX('A', 9, AF10)>, /* SDMMC2_D5 */
 						 <STM32_PINMUX('E', 5, AF9)>, /* SDMMC2_D6 */
 						 <STM32_PINMUX('D', 3, AF9)>; /* SDMMC2_D7 */
-					slew-rate = <3>;
+					slew-rate = <1>;
 					drive-push-pull;
 					bias-pull-up;
 				};
 			};
 
+			sdmmc2_d47_sleep_pins_a: sdmmc2-d47-sleep-0 {
+				pins {
+					pinmux = <STM32_PINMUX('A', 8, ANALOG)>, /* SDMMC2_D4 */
+						 <STM32_PINMUX('A', 9, ANALOG)>, /* SDMMC2_D5 */
+						 <STM32_PINMUX('E', 5, ANALOG)>, /* SDMMC2_D6 */
+						 <STM32_PINMUX('D', 3, ANALOG)>; /* SDMMC2_D7 */
+				};
+			};
+
 			spdifrx_pins_a: spdifrx-0 {
 				pins {
 					pinmux = <STM32_PINMUX('G', 12, AF8)>; /* SPDIF_IN1 */

arch/arm/dts/stm32mp157a-avenger96-u-boot.dtsi

@@ -155,7 +155,10 @@
 
 &sdmmc2_b4_pins_a {
 	u-boot,dm-spl;
-	pins {
+	pins1 {
+		u-boot,dm-spl;
+	};
+	pins2 {
 		u-boot,dm-spl;
 	};
 };

arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi

@@ -174,7 +174,10 @@
 
 &sdmmc2_b4_pins_a {
 	u-boot,dm-spl;
-	pins {
+	pins1 {
+		u-boot,dm-spl;
+	};
+	pins2 {
 		u-boot,dm-spl;
 	};
 };

arch/arm/dts/stm32mp157c-ed1.dts

@@ -294,15 +294,18 @@
 };
 
 &sdmmc2 {
+	pinctrl-names = "default", "opendrain", "sleep";
 	pinctrl-0 = <&sdmmc2_b4_pins_a &sdmmc2_d47_pins_a>;
+	pinctrl-1 = <&sdmmc2_b4_od_pins_a &sdmmc2_d47_pins_a>;
+	pinctrl-2 = <&sdmmc2_b4_sleep_pins_a &sdmmc2_d47_sleep_pins_a>;
 	non-removable;
 	no-sd;
 	no-sdio;
-	st,sig-dir;
 	st,neg-edge;
 	bus-width = <8>;
 	vmmc-supply = <&v3v3>;
-	vqmmc-supply = <&vdd>;
+	vqmmc-supply = <&v3v3>;
+	mmc-ddr-3_3v;
 	status = "okay";
 };