Date:   Tue, 30 Mar 2021 18:50:37 +0200
From:   Alexandre TORGUE <alexandre.torgue@...s.st.com>
To:     <dillon.minfei@...il.com>, <robh@...nel.org>,
        <valentin.caron@...s.st.com>, <rong.a.chen@...el.com>,
        <a.fatoum@...gutronix.de>, <mcoquelin.stm32@...il.com>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux@...linux.org.uk>,
        <afzal.mohd.ma@...il.com>, <gregkh@...uxfoundation.org>,
        <erwan.leray@...s.st.com>, <erwan.leray@...com>,
        <linux-serial@...r.kernel.org>, <lkp@...el.com>,
        <patrice.chotard@...s.st.com>
Subject: Re: [PATCH v8 4/6] ARM: dts: stm32: add support for art-pi board
 based on stm32h750xbh6



On 3/30/21 10:58 AM, dillon.minfei@...il.com wrote:
> From: dillon min <dillon.minfei@...il.com>
> 
> This patchset has following changes:
> 
> - introduce stm32h750.dtsi to support stm32h750 value line
> - add stm32h750i-art-pi.dtb (arch/arm/boot/dts/Makefile)
> - add stm32h750-art-pi.dts to support art-pi board
> 
> art-pi 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@...il.com>
> ---
> v8:
> - move file stm32h743.dtsi submit position to [PATCH V8 3/6]
> 
>   arch/arm/boot/dts/Makefile              |   1 +
>   arch/arm/boot/dts/stm32h750.dtsi        |   6 +
>   arch/arm/boot/dts/stm32h750i-art-pi.dts | 229 ++++++++++++++++++++++++++++++++
>   3 files changed, 236 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/stm32h750.dtsi b/arch/arm/boot/dts/stm32h750.dtsi
> new file mode 100644
> index 000000000000..41e3b1e3a874
> --- /dev/null
> +++ b/arch/arm/boot/dts/stm32h750.dtsi
> @@ -0,0 +1,6 @@
> +/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
> +/* Copyright (C) STMicroelectronics 2021 - All Rights Reserved */
> +
> +#include "stm32h743.dtsi"
> +

I know it's a bit odd, but you could directly include stm32h743.dtsi in 
your board as there are no SoC differences.


> 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..9bb73bb61901
> --- /dev/null
> +++ b/arch/arm/boot/dts/stm32h750i-art-pi.dts
> @@ -0,0 +1,229 @@
> +/*
> + * Copyright 2021 - Dillon Min <dillon.minfei@...il.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.
> + *
> + * For art-pi board resources, you can refer to link:
> + * 	https://art-pi.gitee.io/website/
> + */
> +
> +/dts-v1/;
> +#include "stm32h750.dtsi"
> +#include "stm32h7-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@...00000 {
> +		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>;
> +};
> +
> +&dma1 {
> +	status = "okay";
> +};
> +
> +&dma2 {
> +	status = "okay";
> +};
> +
> +&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";
> +};
> +
> +&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";
> +	};
> +};
> +
> +&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>;
> +		};
> +	};
> +};
> +
> +&usart2 {
> +	pinctrl-0 = <&usart2_pins>;
> +	pinctrl-names = "default";
> +	status = "disabled";
> +};
> +
> +&usart3 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&usart3_pins>;
> +	dmas = <&dmamux1 45 0x400 0x05>,
> +	       <&dmamux1 46 0x400 0x05>;
> +	dma-names = "rx", "tx";
> +	st,hw-flow-ctrl;
> +	status = "okay";
> +
> +	bluetooth {
> +		compatible = "brcm,bcm43438-bt";
> +		host-wakeup-gpios = <&gpioc 0 GPIO_ACTIVE_HIGH>;
> +		device-wakeup-gpios = <&gpioi 10 GPIO_ACTIVE_HIGH>;
> +		shutdown-gpios = <&gpioi 11 GPIO_ACTIVE_HIGH>;
> +		max-speed = <115200>;
> +	};
> +};
> +
> +&uart4 {
> +	pinctrl-0 = <&uart4_pins>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};
> +
> +
> 

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