Add support of stm32mp135f discovery board (part number: STM32MP135F-DK).
It embeds a STM32MP135f SOC with 512 MB of DDR3.
Several connections are available on this board:
4*USB2.0, 1*USB2.0 typeC DRD, SDcard, 2*RJ45, HDMI, Combo Wifi/BT, ...
Only SD card, uart4 (console) and watchdog IPs are enabled in this commit.
Signed-off-by: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 863347b6b65e..e4e04e57fba0 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1087,6 +1087,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
stm32h743i-eval.dtb \
stm32h743i-disco.dtb \
stm32h750i-art-pi.dtb \
+ stm32mp135f-dk.dtb \
stm32mp153c-dhcom-drc02.dtb \
stm32mp157a-avenger96.dtb \
stm32mp157a-dhcor-avenger96.dtb \
diff --git a/arch/arm/boot/dts/stm32mp13-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp13-pinctrl.dtsi
new file mode 100644
index 000000000000..069f95f2b628
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp13-pinctrl.dtsi
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2021 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>
+ */
+#include <dt-bindings/pinctrl/stm32-pinfunc.h>
+
+&pinctrl {
+ sdmmc1_b4_pins_a: sdmmc1-b4-0 {
+ pins1 {
+ pinmux = <STM32_PINMUX('C', 8, AF12)>, /* SDMMC1_D0 */
+ <STM32_PINMUX('C', 9, AF12)>, /* SDMMC1_D1 */
+ <STM32_PINMUX('C', 10, AF12)>, /* SDMMC1_D2 */
+ <STM32_PINMUX('C', 11, AF12)>, /* SDMMC1_D3 */
+ <STM32_PINMUX('D', 2, AF12)>; /* SDMMC1_CMD */
+ slew-rate = <1>;
+ drive-push-pull;
+ bias-disable;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('C', 12, AF12)>; /* SDMMC1_CK */
+ slew-rate = <2>;
+ drive-push-pull;
+ bias-disable;
+ };
+ };
+
+ sdmmc1_b4_od_pins_a: sdmmc1-b4-od-0 {
+ pins1 {
+ pinmux = <STM32_PINMUX('C', 8, AF12)>, /* SDMMC1_D0 */
+ <STM32_PINMUX('C', 9, AF12)>, /* SDMMC1_D1 */
+ <STM32_PINMUX('C', 10, AF12)>, /* SDMMC1_D2 */
+ <STM32_PINMUX('C', 11, AF12)>; /* SDMMC1_D3 */
+ slew-rate = <1>;
+ drive-push-pull;
+ bias-disable;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('C', 12, AF12)>; /* SDMMC1_CK */
+ slew-rate = <2>;
+ drive-push-pull;
+ bias-disable;
+ };
+ pins3 {
+ pinmux = <STM32_PINMUX('D', 2, AF12)>; /* SDMMC1_CMD */
+ slew-rate = <1>;
+ drive-open-drain;
+ bias-disable;
+ };
+ };
+
+ uart4_pins_a: uart4-0 {
+ pins1 {
+ pinmux = <STM32_PINMUX('D', 6, AF8)>; /* UART4_TX */
+ bias-disable;
+ drive-push-pull;
+ slew-rate = <0>;
+ };
+ pins2 {
+ pinmux = <STM32_PINMUX('D', 8, AF8)>; /* UART4_RX */
+ bias-disable;
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/stm32mp135f-dk.dts b/arch/arm/boot/dts/stm32mp135f-dk.dts
new file mode 100644
index 000000000000..7e96d9e36217
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp135f-dk.dts
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2021 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx> for STMicroelectronics.
+ */
+
+/dts-v1/;
+
+#include "stm32mp135.dtsi"
+#include "stm32mp13xf.dtsi"
+#include "stm32mp13-pinctrl.dtsi"
+
+/ {
+ model = "STMicroelectronics STM32MP135F-DK Discovery Board";
+ compatible = "st,stm32mp135f-dk", "st,stm32mp135";
+
+ aliases {
+ serial0 = &uart4;
+ };
+
+ memory@c0000000 {
+ device_type = "memory";
+ reg = <0xc0000000 0x20000000>;
+ };
+
+ vdd_sd: vdd-sd {
+ compatible = "regulator-fixed";
+ regulator-name = "vdd_sd";
+ regulator-min-microvolt = <2900000>;
+ regulator-max-microvolt = <2900000>;
+ regulator-always-on;
+ };
+};
+
+&iwdg2 {
+ timeout-sec = <32>;
+ status = "okay";
+};
+
+&sdmmc1 {
+ pinctrl-names = "default", "opendrain";
+ pinctrl-0 = <&sdmmc1_b4_pins_a>;
+ pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
+ broken-cd;
+ disable-wp;
+ st,neg-edge;
+ bus-width = <4>;
+ vmmc-supply = <&vdd_sd>;
+ status = "okay";
+};
+
+&uart4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart4_pins_a>;
+ status = "okay";
+};
--
2.17.1
