linux-kernel - Re: [PATCH v3 3/5] ARM: dts: stm32: enable ltdc binding with ili9341 on stm32429-disco board

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Message-ID: <CACRpkda5VjjBdbruXTi33QBNb=VU6vK2zDE8yyQXoWw7=NQFeg@mail.gmail.com>
Date:   Thu, 14 May 2020 10:24:28 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     dillon.minfei@...il.com
Cc:     Rob Herring <robh+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        "thierry.reding@...il.com" <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Dave Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        "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@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:DRM PANEL DRIVERS" <dri-devel@...ts.freedesktop.org>,
        linux-clk <linux-clk@...r.kernel.org>
Subject: Re: [PATCH v3 3/5] ARM: dts: stm32: enable ltdc binding with ili9341
 on stm32429-disco board

On Tue, May 12, 2020 at 9:04 AM <dillon.minfei@...il.com> wrote:

> From: dillon min <dillon.minfei@...il.com>
>
> Enable the ltdc & ili9341 on stm32429-disco board.
>
> Signed-off-by: dillon min <dillon.minfei@...il.com>

This mostly looks good but...

> +&spi5 {
> +       status = "okay";
> +       pinctrl-0 = <&spi5_pins>;
> +       pinctrl-names = "default";
> +       #address-cells = <1>;
> +       #size-cells = <0>;
> +       cs-gpios = <&gpioc 2 GPIO_ACTIVE_LOW>;
> +       dmas = <&dma2 3 2 0x400 0x0>,
> +              <&dma2 4 2 0x400 0x0>;
> +       dma-names = "rx", "tx";

These DMA assignments seem to be SoC things and should
rather be in the DTS(I) file where &spi5 is defined, right?
stm32f429.dtsi I suppose?

It is likely the same no matter which device is using spi5.

Yours,
Linus Walleij