ARM: dts: stm32: add sdmmc3 node for STM32MP1 boards

On STM32MP1 EVAL and DISCOVERY boards, the SDMMC3 internal peripheral
can be used through the GPIO extension connector. The sdmmc3 node is then
added in the boards DT files, and the required pins are also added.
The node status is disabled as there is no device connected by default.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Yann Gautier <yann.gautier@st.com>

diff --git a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
index bdd4113f473eb897646b4c216fac5355e378cbac..2b6d4474faef72ddc2096585a35a0d4c6c8bedce 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
@@ -1053,6 +1053,60 @@ pins {
                                };
                        };
 
+                       sdmmc3_b4_pins_a: sdmmc3-b4-0 {
+                               pins1 {
+                                       pinmux = <STM32_PINMUX('F', 0, AF9)>, /* SDMMC3_D0 */
+                                                <STM32_PINMUX('F', 4, AF9)>, /* SDMMC3_D1 */
+                                                <STM32_PINMUX('F', 5, AF9)>, /* SDMMC3_D2 */
+                                                <STM32_PINMUX('D', 7, AF10)>, /* SDMMC3_D3 */
+                                                <STM32_PINMUX('F', 1, AF9)>; /* SDMMC3_CMD */
+                                       slew-rate = <1>;
+                                       drive-push-pull;
+                                       bias-pull-up;
+                               };
+                               pins2 {
+                                       pinmux = <STM32_PINMUX('G', 15, AF10)>; /* SDMMC3_CK */
+                                       slew-rate = <2>;
+                                       drive-push-pull;
+                                       bias-pull-up;
+                               };
+                       };
+
+                       sdmmc3_b4_od_pins_a: sdmmc3-b4-od-0 {
+                               pins1 {
+                                       pinmux = <STM32_PINMUX('F', 0, AF9)>, /* SDMMC3_D0 */
+                                                <STM32_PINMUX('F', 4, AF9)>, /* SDMMC3_D1 */
+                                                <STM32_PINMUX('F', 5, AF9)>, /* SDMMC3_D2 */
+                                                <STM32_PINMUX('D', 7, AF10)>; /* SDMMC3_D3 */
+                                       slew-rate = <1>;
+                                       drive-push-pull;
+                                       bias-pull-up;
+                               };
+                               pins2 {
+                                       pinmux = <STM32_PINMUX('G', 15, AF10)>; /* SDMMC3_CK */
+                                       slew-rate = <2>;
+                                       drive-push-pull;
+                                       bias-pull-up;
+                               };
+                               pins3 {
+                                       pinmux = <STM32_PINMUX('F', 1, AF9)>; /* SDMMC2_CMD */
+                                       slew-rate = <1>;
+                                       drive-open-drain;
+                                       bias-pull-up;
+                               };
+                       };
+
+                       sdmmc3_b4_sleep_pins_a: sdmmc3-b4-sleep-0 {
+                               pins {
+                                       pinmux = <STM32_PINMUX('F', 0, ANALOG)>, /* SDMMC3_D0 */
+                                                <STM32_PINMUX('F', 4, ANALOG)>, /* SDMMC3_D1 */
+                                                <STM32_PINMUX('F', 5, ANALOG)>, /* SDMMC3_D2 */
+                                                <STM32_PINMUX('D', 7, ANALOG)>, /* SDMMC3_D3 */
+                                                <STM32_PINMUX('G', 15, ANALOG)>, /* SDMMC3_CK */
+                                                <STM32_PINMUX('F', 1, ANALOG)>; /* SDMMC3_CMD */
+                               };
+                       };
+
                        spdifrx_pins_a: spdifrx-0 {
                                pins {
                                        pinmux = <STM32_PINMUX('G', 12, AF8)>; /* SPDIF_IN1 */

diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index d4e37ab0752aa85a236d6c6241c30f861584db21..2f9f8cf94b0246209f6c9f3326f384aee28ffab4 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -502,6 +502,18 @@ &sdmmc1 {
        status = "okay";
 };
 
+&sdmmc3 {
+       pinctrl-names = "default", "opendrain", "sleep";
+       pinctrl-0 = <&sdmmc3_b4_pins_a>;
+       pinctrl-1 = <&sdmmc3_b4_od_pins_a>;
+       pinctrl-2 = <&sdmmc3_b4_sleep_pins_a>;
+       broken-cd;
+       st,neg-edge;
+       bus-width = <4>;
+       vmmc-supply = <&v3v3>;
+       status = "disabled";
+};
+
 &timers1 {
        /* spare dmas for other usage */
        /delete-property/dmas;

diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts
index a27db4e3f1ce002ab838edaaea3694eb6a69ccac..2010f6292a77f31522ebb2155014c606bd0a6fa5 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157c-ev1.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts
@@ -283,6 +283,18 @@ flash1: mx66l51235l@1 {
        };
 };
 
+&sdmmc3 {
+       pinctrl-names = "default", "opendrain", "sleep";
+       pinctrl-0 = <&sdmmc3_b4_pins_a>;
+       pinctrl-1 = <&sdmmc3_b4_od_pins_a>;
+       pinctrl-2 = <&sdmmc3_b4_sleep_pins_a>;
+       broken-cd;
+       st,neg-edge;
+       bus-width = <4>;
+       vmmc-supply = <&v3v3>;
+       status = "disabled";
+};
+
 &spi1 {
        pinctrl-names = "default";
        pinctrl-0 = <&spi1_pins_a>;