ARM: dts: stm32: add initial support of stm32mp135f-dk board

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@foss.st.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 7e0934180724d86c704768e46600daaa828dc2c9..f5b21007d0dfa6984ee11954a491271d98b80330 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1113,6 +1113,7 @@ 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 (file)
index 0000000..069f95f
--- /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@foss.st.com>
+ */
+#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 (file)
index 0000000..7e96d9e
--- /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@foss.st.com> 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";
+};