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From 99a3f83e06f85fb3c6fe3c7c6febad44d2e1b8f1 Mon Sep 17 00:00:00 2001
From: DCM Developer <developer@dcm.com>
Date: Mon, 29 Apr 2025 10:00:00 +0200
Subject: [PATCH] ARM: dts: stm32: add support for stm32mp157c-dcm
This patch adds device tree support for the STM32MP157C-DCM custom board.
Signed-off-by: DCM Developer <developer@dcm.com>
---
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/stm32mp157c-dcm.dts | 492 ++++++++++++++++++++++
2 files changed, 493 insertions(+)
create mode 100644 arch/arm/boot/dts/stm32mp157c-dcm.dts
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index a1234567..89012345 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -984,6 +984,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
stm32mp157a-dk1.dtb \
stm32mp157c-dk2.dtb \
stm32mp157c-ed1.dtb \
+ stm32mp157c-dcm.dtb \
stm32mp157c-ev1.dtb
dtb-$(CONFIG_ARCH_STRATIX10) += \
diff --git a/arch/arm/boot/dts/stm32mp157c-dcm.dts b/arch/arm/boot/dts/stm32mp157c-dcm.dts
new file mode 100644
index 0000000..12345678
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp157c-dcm.dts
@@ -0,0 +1,492 @@
+// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause)
+/*
+ * Copyright (C) 2025, STMicroelectronics - All Rights Reserved
+ * Author: STM32CubeMX code generation for STMicroelectronics.
+ */
+
+/* For more information on Device Tree configuration, please refer to
+ * https://wiki.st.com/stm32mpu/wiki/Category:Device_tree_configuration
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/pinctrl/stm32-pinfunc.h>
+#include "stm32mp157.dtsi"
+#include "stm32mp15xc.dtsi"
+#include "stm32mp15xxac-pinctrl.dtsi"
+#include "stm32mp15-m4-srm.dtsi"
+
+/* USER CODE BEGIN includes */
+#include <dt-bindings/mfd/st,stpmic1.h>
+#include <dt-bindings/rtc/rtc-stm32.h>
+#include <dt-bindings/net/ti-dp83867.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/leds-pca9532.h>
+
+#include "stm32mp15-pinctrl.dtsi"
+/* USER CODE END includes */
+
+/ {
+ model = "STM32MP157C-DCM Board";
+ compatible = "st,stm32mp157c-dcm", "st,stm32mp157";
+
+ memory@c0000000 {
+ device_type = "memory";
+ reg = <0xc0000000 0x20000000>; /* 512 MB */
+ };
+
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ mcuram2:mcuram2@10000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x10000000 0x40000>;
+ no-map;
+ };
+
+ vdev0vring0:vdev0vring0@10040000 {
+ compatible = "shared-dma-pool";
+ reg = <0x10040000 0x1000>;
+ no-map;
+ };
+
+ vdev0vring1:vdev0vring1@10041000 {
+ compatible = "shared-dma-pool";
+ reg = <0x10041000 0x1000>;
+ no-map;
+ };
+
+ vdev0buffer:vdev0buffer@10042000 {
+ compatible = "shared-dma-pool";
+ reg = <0x10042000 0x4000>;
+ no-map;
+ };
+
+ mcu_rsc_table:mcu-rsc-table@10048000 {
+ compatible = "shared-dma-pool";
+ reg = <0x10048000 0x8000>;
+ no-map;
+ };
+
+ mcuram:mcuram@30000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x30000000 0x40000>;
+ no-map;
+ };
+
+ retram:retram@38000000 {
+ compatible = "shared-dma-pool";
+ reg = <0x38000000 0x10000>;
+ no-map;
+ };
+
+ gpu_reserved:gpu@d4000000 {
+ reg = <0xd4000000 0x4000000>;
+ no-map;
+ };
+
+ linux,cma {
+ compatible = "shared-dma-pool";
+ reusable;
+ size = <0x8000000>;
+ alignment = <0x2000>;
+ linux,cma-default;
+ };
+ };
+
+ aliases {
+ mmc0 = &sdmmc1;
+ mmc1 = &sdmmc2;
+ rtc0 = &i2c4_rtc;
+ rtc1 = &rtc;
+ ethernet0 = &ethernet0;
+ serial0 = &uart4;
+ serial1 = &usart2;
+ serial2 = &usart3;
+ };
+
+ /* DVI Transmitter Definition */
+ dvi_transmitter: tfp410 {
+ compatible = "ti,tfp410";
+ pinctrl-names = "default";
+ pinctrl-0 = <&tfp410_pins>;
+ powerdown-gpios = <&gpioa 6 GPIO_ACTIVE_LOW>;
+ reset-gpios = <&gpioa 4 GPIO_ACTIVE_LOW>; /* HDMI_NRST auf PA4 (aktiv niedrig) */
+
+ /* Neuer Eintrag für den Interrupt-Pin PA3 */
+ interrupt-parent = <&gpioa>;
+ interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ tfp410_in: endpoint {
+ remote-endpoint = <&ltdc_out0>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ tfp410_out: endpoint {
+ remote-endpoint = <&dvi_connector_in>;
+ };
+ };
+ };
+ };
+
+ /* DVI Connector Definition */
+ dvi: connector {
+ compatible = "dvi-connector";
+ label = "dvi";
+ ddc-i2c-bus = <&i2c2>;
+
+ port {
+ dvi_connector_in: endpoint {
+ remote-endpoint = <&tfp410_out>;
+ };
+ };
+ };
+
+ led {
+ compatible = "gpio-leds";
+
+ led-a {
+ label = "heartbeat";
+ gpios = <&gpiof 12 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "heartbeat";
+ default-state = "off";
+ };
+ };
+
+ sound {
+ compatible = "simple-audio-card";
+ simple-audio-card,name = "STM32MP1-DCM-Audio";
+ simple-audio-card,format = "i2s";
+ simple-audio-card,widgets =
+ "Microphone", "Mic Jack",
+ "Line", "Line In",
+ "Line", "Line Out",
+ "Headphone", "Headphone Jack";
+
+ simple-audio-card,routing =
+ "Line Out", "LOUT",
+ "Line Out", "ROUT",
+ "Headphone Jack", "LHPOUT",
+ "Headphone Jack", "RHPOUT",
+ "LLINEIN", "Line In",
+ "RLINEIN", "Line In",
+ "MICIN", "Mic Jack";
+
+ simple-audio-card,cpu {
+ sound-dai = <&sai2>; /* Anpassen an den verwendeten SAI-Port */
+ };
+
+ simple-audio-card,codec {
+ sound-dai = <&tlv320ahc>;
+ system-clock-frequency = <12288000>; /* Typischer Takt, anpassen falls nötig */
+ };
+ };
+
+ vin: vin {
+ compatible = "regulator-fixed";
+ regulator-name = "vin";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-always-on;
+ };
+
+ chosen {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+ stdout-path = "serial0:115200n8";
+
+ framebuffer {
+ compatible = "simple-framebuffer";
+ clocks = <&rcc LTDC_PX>;
+ status = "disabled";
+ };
+ };
+
+ wifi_pwrseq: wifi-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ /* reset-gpios = <&gpioh 4 GPIO_ACTIVE_LOW>; */
+ };
+
+ /* DC power supply */
+ v3v3_reg: regulator-3p3v {
+ compatible = "regulator-fixed";
+ regulator-name = "v3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+
+ /* Ethernet PHY power supply */
+ eth_phy_vdd: regulator-eth-phy {
+ compatible = "regulator-fixed";
+ regulator-name = "eth_phy_vdd";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&gpiog 5 GPIO_ACTIVE_HIGH>;
+ startup-delay-us = <100000>;
+ enable-active-high;
+ };
+};
+
+&ltdc {
+ status = "okay";
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&ltdc_pins_mx>;
+ pinctrl-1 = <&ltdc_sleep_pins_mx>;
+
+ port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ltdc_out0: endpoint {
+ remote-endpoint = <&tfp410_in>;
+ };
+ };
+};
+
+&ethernet0 {
+ status = "okay";
+ pinctrl-0 = <&eth1_pins_mx>;
+ pinctrl-1 = <&eth1_sleep_pins_mx>;
+ pinctrl-names = "default", "sleep";
+ phy-mode = "rgmii-id";
+ max-speed = <1000>;
+ phy-handle = <&phy0>;
+ phy-supply = <&eth_phy_vdd>;
+
+ mdio0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "snps,dwmac-mdio";
+ phy0: ethernet-phy@1 {
+ reg = <1>;
+ compatible = "ethernet-phy-ieee802.3-c22";
+ interrupt-parent = <&gpiog>;
+ interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
+ ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
+ ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
+ ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
+ ti,min-output-impedance;
+ enet-phy-lane-no-swap;
+ ti,clk-output-sel = <DP83867_CLK_O_SEL_OFF>;
+ };
+ };
+};
+
+&i2c1 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&i2c1_pins_mx>;
+ pinctrl-1 = <&i2c1_sleep_pins_mx>;
+ status = "okay";
+ i2c-scl-rising-time-ns = <100>;
+ i2c-scl-falling-time-ns = <7>;
+
+ /* TLV320AHC Audio Codec */
+ tlv320ahc: tlv320ahc@18 {
+ compatible = "ti,tlv320aic23";
+ reg = <0x18>;
+ #sound-dai-cells = <0>;
+ status = "okay";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ tlv320ahc_tx_endpoint: endpoint {
+ remote-endpoint = <&sai2a_endpoint>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ tlv320ahc_rx_endpoint: endpoint {
+ remote-endpoint = <&sai2b_endpoint>;
+ };
+ };
+ };
+ };
+};
+
+&i2c2 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&i2c2_pins_mx>;
+ pinctrl-1 = <&i2c2_sleep_pins_mx>;
+ status = "okay";
+ i2c-scl-rising-time-ns = <100>;
+ i2c-scl-falling-time-ns = <100>;
+ clock-frequency = <100000>;
+};
+
+&i2c4 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&i2c4_pins_z_mx>;
+ pinctrl-1 = <&i2c4_sleep_pins_z_mx>;
+ status = "okay";
+ i2c-scl-rising-time-ns = <185>;
+ i2c-scl-falling-time-ns = <20>;
+ clock-frequency = <400000>;
+
+ i2c4_eeprom: eeprom@50 {
+ compatible = "atmel,24c32";
+ reg = <0x50>;
+ status = "okay";
+ };
+
+ i2c4_rtc: rtc@52 {
+ compatible = "microcrystal,rv3028";
+ reg = <0x52>;
+ status = "okay";
+ };
+};
+
+&qspi {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&quadspi_pins_mx>;
+ pinctrl-1 = <&quadspi_sleep_pins_mx>;
+ status = "okay";
+ reg = <0x58003000 0x1000>, <0x70000000 0x4000000>;
+
+ flash0: flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-rx-bus-width = <4>;
+ spi-max-frequency = <108000000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+};
+
+&uart4 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&uart4_pins_a>;
+ pinctrl-1 = <&uart4_sleep_pins_a>;
+ status = "okay";
+};
+
+&sdmmc1 {
+ pinctrl-names = "default", "opendrain", "sleep";
+ pinctrl-0 = <&sdmmc1_pins_mx &sdmmc1_cd_pins>;
+ pinctrl-1 = <&sdmmc1_opendrain_pins_mx>;
+ pinctrl-2 = <&sdmmc1_sleep_pins_mx>;
+ cd-gpios = <&gpiof 2 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ disable-wp;
+ st,neg-edge;
+ bus-width = <4>;
+ vmmc-supply = <&v3v3_reg>;
+ status = "okay";
+};
+
+&sdmmc2 {
+ pinctrl-names = "default", "opendrain", "sleep";
+ pinctrl-0 = <&sdmmc2_pins_mx>;
+ pinctrl-1 = <&sdmmc2_opendrain_pins_mx>;
+ pinctrl-2 = <&sdmmc2_sleep_pins_mx>;
+ non-removable;
+ no-sd;
+ no-sdio;
+ st,neg-edge;
+ bus-width = <8>;
+ vmmc-supply = <&v3v3_reg>;
+ vqmmc-supply = <&v3v3_reg>;
+ mmc-ddr-3_3v;
+ status = "okay";
+};
+
+&usart1 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&usart1_pins_mx>;
+ pinctrl-1 = <&usart1_sleep_pins_mx>;
+ status = "okay";
+ /* RS-485 configuration */
+ rs485-rts-delay = <0 0>;
+ linux,rs485-enabled-at-boot-time;
+ rs485-rts-active-high;
+ uart-has-rtscts;
+};
+
+&usart2 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&usart2_pins_mx>;
+ pinctrl-1 = <&usart2_sleep_pins_mx>;
+ status = "okay";
+};
+
+&iwdg2 {
+ timeout-sec = <32>;
+ status = "okay";
+};
+
+&sai2 {
+ st,iec60958;
+ status = "okay";
+
+ sai2a: audio-controller@4400b004 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&sai2a_pins_mx>;
+ pinctrl-1 = <&sai2a_sleep_pins_mx>;
+ status = "okay";
+ sai2a_port: port {
+ sai2a_endpoint: endpoint {
+ remote-endpoint = <&tlv320ahc_tx_endpoint>;
+ dai-format = "i2s";
+ mclk-fs = <256>;
+ dai-tdm-slot-num = <2>;
+ dai-tdm-slot-width = <32>;
+ };
+ };
+ };
+
+ sai2b: audio-controller@4400b024 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&sai2b_pins_mx>;
+ pinctrl-1 = <&sai2b_sleep_pins_mx>;
+ status = "okay";
+ sai2b_port: port {
+ sai2b_endpoint: endpoint {
+ remote-endpoint = <&tlv320ahc_rx_endpoint>;
+ dai-format = "i2s";
+ mclk-fs = <256>;
+ dai-tdm-slot-num = <2>;
+ dai-tdm-slot-width = <32>;
+ };
+ };
+ };
+};
--
2.42.0
_dir_pins_a>;
+ pinctrl-2 = <&sdmmc1_b4_sleep_pins_a &sdmmc1_dir_sleep_pins_a>;
+ broken-cd;
+ disable-wp;
+ st,neg-edge;
+ bus-width = <4>;
+ vmmc-supply = <&v3v3_reg>;
+ status = "okay";
+};
+
+/* eMMC */
+&sdmmc2 {
+ pinctrl-names = "default", "opendrain", "sleep";
+ pinctrl-0 = <&sdmmc2_b4_pins_a &sdmmc2_d47_pins_a>;
+ pinctrl-1 = <&sdmmc2_b4_od_pins_a &sdmmc2_d47_pins_a>;
+ pinctrl-2 = <&sdmmc2_b4_sleep_pins_a &sdmmc2_d47_sleep_pins_a>;
+ non-removable;
+ no-sd;
+ no-sdio;
+ st,neg-edge;
+ bus-width = <8>;
+ vmmc-supply = <&v3v3_reg>;
+ vqmmc-supply = <&v3v3_reg>;
+ mmc-ddr-3_3v;
+ status = "okay";
+};
+
+/* I2C bus */
+&i2c1 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&i2c1_pins_a>;
+ pinctrl-1 = <&i2c1_sleep_pins_a>;
+ i2c-scl-rising-time-ns = <100>;
+ i2c-scl-falling-time-ns = <7>;
+ status = "okay";
+ clock-frequency = <400000>;
+};
+
+/* USB OTG HS */
+&usbotg_hs {
+ dr_mode = "otg";
+ pinctrl-0 = <&usbotg_hs_pins_a>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+/* USB Host */
+&usbh_ehci {
+ status = "okay";
+};
+
+&usbh_ohci {
+ status = "okay";
+};
+
+/* RTC */
+&rtc {
+ status = "okay";
+};
+
+/* Watchdog */
+&iwdg2 {
+ timeout-sec = <32>;
+ status = "okay";
+};
+
+/* CAN bus */
+&m_can1 {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&m_can1_pins_a>;
+ pinctrl-1 = <&m_can1_sleep_pins_a>;
+ status = "okay";
+};
+
+/* SPI Flash */
+&qspi {
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&qspi_clk_pins_a &qspi_bk1_pins_a>;
+ pinctrl-1 = <&qspi_clk_sleep_pins_a &qspi_bk1_sleep_pins_a>;
+ status = "okay";
+ reg = <0x58003000 0x1000>, <0x70000000 0x4000000>;
+
+ flash0: flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-rx-bus-width = <4>;
+ spi-max-frequency = <108000000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+};
+
+/* ADC */
+&adc {
+ pinctrl-names = "default";
+ pinctrl-0 = <&adc1_pins_a>;
+ vdd-supply = <&v3v3_reg>;
+ vdda-supply = <&v3v3_reg>;
+ vref-supply = <&v3v3_reg>;
+ status = "okay";
+ adc1: adc@0 {
+ st,adc-channels = <0 1 2>;
+ st,min-sample-time-nsecs = <5000>;
+ status = "okay";
+ };
+};
+
+/* PWM */
+&timers1 {
+ status = "okay";
+ pwm {
+ pinctrl-0 = <&pwm1_pins_a>;
+ pinctrl-names = "default";
+ status = "okay";
+ };
+ timer@0 {
+ status = "okay";
+ };
+};
+
+/* Misc */
+&pwr_regulators {
+ vdd-supply = <&v3v3_reg>;
+ vdd_3v3_usbfs-supply = <&v3v3_reg>;
+};
+--
+2.42.0
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