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 bdd4113..2b6d447 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
@@ -1053,6 +1053,60 @@
                                };
                        };
 
+                       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 d4e37ab..2f9f8cf 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -502,6 +502,18 @@
        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 a27db4e..2010f62 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157c-ev1.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts
@@ -283,6 +283,18 @@
        };
 };
 
+&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>;