Date:   Wed, 31 Mar 2021 06:43:38 +0800
From:   dillon min <dillon.minfei@...il.com>
To:     Alexandre TORGUE <alexandre.torgue@...s.st.com>
Cc:     Rob Herring <robh@...nel.org>,
        Valentin CARON - foss <valentin.caron@...s.st.com>,
        rong.a.chen@...el.com, Ahmad Fatoum <a.fatoum@...gutronix.de>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux@...linux.org.uk, afzal.mohd.ma@...il.com,
        gregkh@...uxfoundation.org,
        Erwan LE-RAY - foss <erwan.leray@...s.st.com>,
        Erwan LE RAY <erwan.leray@...com>,
        linux-serial@...r.kernel.org, lkp@...el.com,
        Patrice CHOTARD <patrice.chotard@...s.st.com>
Subject: Re: [PATCH v8 4/6] ARM: dts: stm32: add support for art-pi board
 based on stm32h750xbh6

Hi Alexandre,

Thanks for the quick response.

On Wed, Mar 31, 2021 at 12:50 AM Alexandre TORGUE
<alexandre.torgue@...s.st.com> wrote:
>
>
>
> 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.

There are some mirror difference between stm32h743 and stm32h750:

Number of A/D Converters (typ):  stm32h743(none),   stm32h750(3)
Crypto:      stm32h743(none),    stm32h750(HASH-AES, DES/TDES, HMAC, MD5, SHA)

you can find detail diff at link:
https://www.st.com/en/microcontrollers-microprocessors/stm32h7-series.html#products
(select stm32h743xi, stm32h750xb to compare)

I have two options for this changes.
- rename stm32h743.dtsi to stm32h7.dtsi, add crypto part to
stm32h7.dtsi in the future.
- make the reference like this (just like stm32f429 <-- stm32f469,
stm32mp151 <-- stm32mp153 <-- stm32mp157 did)
  stm32h743.dtsi <-- stm32h75x.dtsi (stm32h750, stm32h753, stm32h757
all with HW crypto/hash inside)
  we can add crypto to stm32h75x.dtsi, i will just rename
stm32h750.dtsi to stm32h75x.dtsi

I'd like to use option-2, which one do you like?

thanks.
regards.



Dillon,
>
>
> > 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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