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    SubjectRe: [PATCH 7/8] ARM: dts: stm32: add support for art-pi board based on stm32h750xbh6
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    On 3/3/21 9:05 AM, dillon.minfei@gmail.com wrote:
    > From: dillon min <dillon.minfei@gmail.com>
    >
    > This patchset has following changes:
    >
    > - add stm32h750i-art-pi.dtb
    > - add dts binding usart3 for bt, uart4 for console
    > - add dts binding sdmmc2 for wifi
    > - add stm32h750-art-pi.dts to support art-pi board
    >
    > board component:
    > - 8MiB qspi flash
    > - 16MiB spi flash
    > - 32MiB sdram
    > - ap6212 wifi&bt&fm
    >
    > the detail board information can be found at:
    > https://art-pi.gitee.io/website/
    >
    > Signed-off-by: dillon min <dillon.minfei@gmail.com>
    > ---
    > arch/arm/boot/dts/Makefile | 1 +
    > arch/arm/boot/dts/stm32h743.dtsi | 30 +++++
    > arch/arm/boot/dts/stm32h750.dtsi | 5 +
    > arch/arm/boot/dts/stm32h750i-art-pi.dts | 224 ++++++++++++++++++++++++++++++++
    > 4 files changed, 260 insertions(+)
    > create mode 100644 arch/arm/boot/dts/stm32h750.dtsi
    > create mode 100644 arch/arm/boot/dts/stm32h750i-art-pi.dts
    >
    > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
    > index 8e5d4ab4e75e..a19c5ab9df84 100644
    > --- a/arch/arm/boot/dts/Makefile
    > +++ b/arch/arm/boot/dts/Makefile
    > @@ -1071,6 +1071,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
    > stm32746g-eval.dtb \
    > stm32h743i-eval.dtb \
    > stm32h743i-disco.dtb \
    > + stm32h750i-art-pi.dtb \
    > stm32mp153c-dhcom-drc02.dtb \
    > stm32mp157a-avenger96.dtb \
    > stm32mp157a-dhcor-avenger96.dtb \
    > diff --git a/arch/arm/boot/dts/stm32h743.dtsi b/arch/arm/boot/dts/stm32h743.dtsi
    > index 4ebffb0a45a3..981d44051007 100644
    > --- a/arch/arm/boot/dts/stm32h743.dtsi
    > +++ b/arch/arm/boot/dts/stm32h743.dtsi
    > @@ -135,6 +135,22 @@
    > clocks = <&rcc USART2_CK>;
    > };
    >
    > + usart3: serial@40004800 {
    > + compatible = "st,stm32h7-uart";
    > + reg = <0x40004800 0x400>;
    > + interrupts = <39>;
    > + status = "disabled";
    > + clocks = <&rcc USART3_CK>;
    > + };
    > +
    > + uart4: serial@40004c00 {
    > + compatible = "st,stm32h7-uart";
    > + reg = <0x40004c00 0x400>;
    > + interrupts = <52>;
    > + status = "disabled";
    > + clocks = <&rcc UART4_CK>;
    > + };
    > +

    Those peripherals are available on h743 ?

    > i2c1: i2c@40005400 {
    > compatible = "st,stm32f7-i2c";
    > #address-cells = <1>;
    > @@ -368,6 +384,20 @@
    > max-frequency = <120000000>;
    > };
    >
    > + sdmmc2: mmc@48022400 {
    > + compatible = "arm,pl18x", "arm,primecell";
    > + arm,primecell-periphid = <0x10153180>;
    > + reg = <0x48022400 0x400>;
    > + interrupts = <124>;
    > + interrupt-names = "cmd_irq";
    > + clocks = <&rcc SDMMC2_CK>;
    > + clock-names = "apb_pclk";
    > + resets = <&rcc STM32H7_AHB2_RESET(SDMMC2)>;
    > + cap-sd-highspeed;
    > + cap-mmc-highspeed;
    > + max-frequency = <120000000>;
    > + };
    > +
    > exti: interrupt-controller@58000000 {
    > compatible = "st,stm32h7-exti";
    > interrupt-controller;
    > diff --git a/arch/arm/boot/dts/stm32h750.dtsi b/arch/arm/boot/dts/stm32h750.dtsi
    > new file mode 100644
    > index 000000000000..dd9166223c2f
    > --- /dev/null
    > +++ b/arch/arm/boot/dts/stm32h750.dtsi
    > @@ -0,0 +1,5 @@
    > +/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
    > +/* Copyright (C) STMicroelectronics 2021 - All Rights Reserved */
    > +
    > +#include "stm32h743.dtsi"
    > +
    > diff --git a/arch/arm/boot/dts/stm32h750i-art-pi.dts b/arch/arm/boot/dts/stm32h750i-art-pi.dts
    > new file mode 100644
    > index 000000000000..84cf70d7800c
    > --- /dev/null
    > +++ b/arch/arm/boot/dts/stm32h750i-art-pi.dts
    > @@ -0,0 +1,224 @@
    > +/*
    > + * Copyright 2021 - Dillon Min <dillon.minfei@gmail.com>
    > + *
    > + * This file is dual-licensed: you can use it either under the terms
    > + * of the GPL or the X11 license, at your option. Note that this dual
    > + * licensing only applies to this file, and not this project as a
    > + * whole.
    > + *
    > + * a) This file is free software; you can redistribute it and/or
    > + * modify it under the terms of the GNU General Public License as
    > + * published by the Free Software Foundation; either version 2 of the
    > + * License, or (at your option) any later version.
    > + *
    > + * This file is distributed in the hope that it will be useful,
    > + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    > + * GNU General Public License for more details.
    > + *
    > + * Or, alternatively,
    > + *
    > + * b) Permission is hereby granted, free of charge, to any person
    > + * obtaining a copy of this software and associated documentation
    > + * files (the "Software"), to deal in the Software without
    > + * restriction, including without limitation the rights to use,
    > + * copy, modify, merge, publish, distribute, sublicense, and/or
    > + * sell copies of the Software, and to permit persons to whom the
    > + * Software is furnished to do so, subject to the following
    > + * conditions:
    > + *
    > + * The above copyright notice and this permission notice shall be
    > + * included in all copies or substantial portions of the Software.
    > + *
    > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    > + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
    > + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    > + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
    > + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
    > + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    > + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
    > + * OTHER DEALINGS IN THE SOFTWARE.
    > + */
    > +
    > +/dts-v1/;
    > +#include "stm32h750.dtsi"
    > +#include "stm32h750-pinctrl.dtsi"
    > +#include <dt-bindings/interrupt-controller/irq.h>
    > +#include <dt-bindings/gpio/gpio.h>
    > +
    > +/ {
    > + model = "RT-Thread STM32H750i-ART-PI board";
    > + compatible = "st,stm32h750i-art-pi", "st,stm32h750";
    > +
    > + chosen {
    > + bootargs = "root=/dev/ram";
    > + stdout-path = "serial0:2000000n8";
    > + };
    > +
    > + memory@c0000000 {
    > + device_type = "memory";
    > + reg = <0xc0000000 0x2000000>;
    > + };
    > +
    > + reserved-memory {
    > + #address-cells = <1>;
    > + #size-cells = <1>;
    > + ranges;
    > +
    > + linux,cma {
    > + compatible = "shared-dma-pool";
    > + no-map;
    > + size = <0x100000>;
    > + linux,dma-default;
    > + };
    > + };
    > +
    > + aliases {
    > + serial0 = &uart4;
    > + serial1 = &usart3;
    > + };
    > +
    > + leds {
    > + compatible = "gpio-leds";
    > + led-red {
    > + gpios = <&gpioi 8 0>;
    > + };
    > + led-green {
    > + gpios = <&gpioc 15 0>;
    > + linux,default-trigger = "heartbeat";
    > + };
    > + };
    > +
    > + v3v3: regulator-v3v3 {
    > + compatible = "regulator-fixed";
    > + regulator-name = "v3v3";
    > + regulator-min-microvolt = <3300000>;
    > + regulator-max-microvolt = <3300000>;
    > + regulator-always-on;
    > + };
    > +
    > + wlan_pwr: regulator-wlan {
    > + compatible = "regulator-fixed";
    > +
    > + regulator-name = "wl-reg";
    > + regulator-min-microvolt = <3300000>;
    > + regulator-max-microvolt = <3300000>;
    > +
    > + gpios = <&gpioc 13 GPIO_ACTIVE_HIGH>;
    > + enable-active-high;
    > + };
    > +};
    > +
    > +&clk_hse {
    > + clock-frequency = <25000000>;
    > +};
    > +
    > +&mac {
    > + status = "disabled";
    > + pinctrl-0 = <&ethernet_rmii>;
    > + pinctrl-names = "default";
    > + phy-mode = "rmii";
    > + phy-handle = <&phy0>;
    > +
    > + mdio0 {
    > + #address-cells = <1>;
    > + #size-cells = <0>;
    > + compatible = "snps,dwmac-mdio";
    > + phy0: ethernet-phy@0 {
    > + reg = <0>;
    > + };
    > + };
    > +};
    > +
    > +&sdmmc1 {
    > + pinctrl-names = "default", "opendrain", "sleep";
    > + pinctrl-0 = <&sdmmc1_b4_pins_a>;
    > + pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
    > + pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
    > + broken-cd;
    > + st,neg-edge;
    > + bus-width = <4>;
    > + vmmc-supply = <&v3v3>;
    > + status = "okay";
    > +};
    > +
    > +&usart2 {
    > + pinctrl-0 = <&usart2_pins>;
    > + pinctrl-names = "default";
    > + status = "disabled";
    > +};
    > +
    > +&uart4 {
    > + pinctrl-0 = <&uart4_pins>;
    > + pinctrl-names = "default";
    > + status = "okay";
    > +};
    > +
    > +&dma1 {
    > + status = "okay";
    > +};
    > +

    Would be better to order by name, but it is your board :)

    > +&dma2 {
    > + status = "okay";
    > +};
    > +
    > +&spi1 {
    > + status = "okay";
    > + pinctrl-0 = <&spi1_pins>;
    > + pinctrl-names = "default";
    > + cs-gpios = <&gpioa 4 GPIO_ACTIVE_LOW>;
    > + dmas = <&dmamux1 37 0x400 0x05>,
    > + <&dmamux1 38 0x400 0x05>;
    > + dma-names = "rx", "tx";
    > +
    > + flash@0 {
    > + #address-cells = <1>;
    > + #size-cells = <1>;
    > + compatible = "winbond,w25q128", "jedec,spi-nor";
    > + reg = <0>;
    > + spi-max-frequency = <80000000>;
    > +
    > + partition@0 {
    > + label = "root filesystem";
    > + reg = <0 0x1000000>;
    > + };
    > + };
    > +};
    > +
    > +&sdmmc2 {
    > + pinctrl-names = "default", "opendrain", "sleep";
    > + pinctrl-0 = <&sdmmc2_b4_pins_a>;
    > + pinctrl-1 = <&sdmmc2_b4_od_pins_a>;
    > + pinctrl-2 = <&sdmmc2_b4_sleep_pins_a>;
    > + broken-cd;
    > + non-removable;
    > + st,neg-edge;
    > + bus-width = <4>;
    > + vmmc-supply = <&wlan_pwr>;
    > + status = "okay";
    > +
    > + #address-cells = <1>;
    > + #size-cells = <0>;
    > + brcmf: bcrmf@1 {
    > + reg = <1>;
    > + compatible = "brcm,bcm4329-fmac";
    > + };
    > +};
    > +
    > +&usart3 {
    > + /delete-property/st,hw-flow-ctrl;
    > + cts-gpios = <&gpiod 11 GPIO_ACTIVE_LOW>;
    > + rts-gpios = <&gpiod 12 GPIO_ACTIVE_LOW>;
    > + dmas = <&dmamux1 45 0x400 0x05>,
    > + <&dmamux1 46 0x400 0x05>;
    > + dma-names = "rx", "tx";
    > + status = "okay";
    > +
    > + bluetooth {
    > + host-wakeup-gpios = <&gpioc 0 GPIO_ACTIVE_HIGH>;
    > + device-wakeup-gpios = <&gpioi 10 GPIO_ACTIVE_HIGH>;
    > + shutdown-gpios = <&gpioi 11 GPIO_ACTIVE_HIGH>;
    > + compatible = "brcm,bcm43438-bt";
    > + max-speed = <115200>;
    > + };
    > +};
    >

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