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@xxxxxx>
Signed-off-by: Yann Gautier <yann.gautier@xxxxxx>
---
arch/arm/boot/dts/stm32mp157-pinctrl.dtsi | 54 +++++++++++++++++++++++
arch/arm/boot/dts/stm32mp157a-dk1.dts | 12 +++++
arch/arm/boot/dts/stm32mp157c-ev1.dts | 12 +++++
3 files changed, 78 insertions(+)
diff --git a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
index a907d93f8916..d31a4661f7b5 100644
--- a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
@@ -926,6 +926,60 @@
};
};
+ 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 0615d1c8a6fc..b86c32e6a829 100644
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -444,6 +444,18 @@
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";
+};
+
&uart4 {
pinctrl-names = "default";
pinctrl-0 = <&uart4_pins_a>;
diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts
index 89d29b50c3f4..d047901c51ea 100644
--- a/arch/arm/boot/dts/stm32mp157c-ev1.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts
@@ -293,6 +293,18 @@
};
};
+&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>;
--
2.17.1
