linux-kernel - Re: [PATCH v3 05/14] ARM: tegra: Add device-tree for ASUS Transformer Prime TF201

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Date:   Sun, 28 Nov 2021 02:51:33 +0100
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Rob Herring <robh+dt@...nel.org>,
        David Heidelberg <david@...t.cz>,
        Svyatoslav Ryhel <clamor95@...il.com>,
        Anton Bambura <jenneron@...tonmail.com>,
        Antoni Aloy Torrens <aaloytorrens@...il.com>,
        Nikola Milosavljevic <mnidza@...look.com>,
        Ion Agorria <ion@...rria.com>,
        Ihor Didenko <tailormoon@...bler.ru>,
        Andreas Westman Dorcsak <hedmoo@...oo.com>,
        Maxim Schwalm <maxim.schwalm@...il.com>,
        Raffaele Tranquillini <raffaele.tranquillini@...il.com>,
        Jasper Korten <jja2000@...il.com>,
        Thomas Graichen <thomas.graichen@...il.com>,
        devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 05/14] ARM: tegra: Add device-tree for ASUS
 Transformer Prime TF201

On Sat, Nov 27, 2021 at 05:23:18PM +0300, Dmitry Osipenko wrote:
> From: Svyatoslav Ryhel <clamor95@...il.com>
> 
> Add device-tree for ASUS Transformer Prime TF201, which is NVIDIA
> Tegra30-based tablet device.
> 
> Co-developed-by: Ion Agorria <ion@...rria.com>
> Signed-off-by: Ion Agorria <ion@...rria.com>
> Co-developed-by: Maxim Schwalm <maxim.schwalm@...il.com>
> Signed-off-by: Maxim Schwalm <maxim.schwalm@...il.com>
> Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
> ---
>  arch/arm/boot/dts/Makefile                    |    1 +
>  .../boot/dts/tegra30-asus-lvds-display.dtsi   |   46 +
>  arch/arm/boot/dts/tegra30-asus-tf201.dts      |  623 ++++++
>  .../dts/tegra30-asus-transformer-common.dtsi  | 1741 +++++++++++++++++
>  4 files changed, 2411 insertions(+)
>  create mode 100644 arch/arm/boot/dts/tegra30-asus-lvds-display.dtsi
>  create mode 100644 arch/arm/boot/dts/tegra30-asus-tf201.dts
>  create mode 100644 arch/arm/boot/dts/tegra30-asus-transformer-common.dtsi

I think the common.dtsi is combined from all the DT authors, so they all
should be mentioned in the co-developed/signed-off lines. (Or maybe just
split the common part out if you want to be more specific in assigning
credits?)


> +	i2c@...0c400 {
> +		/* Atmel MXT768E touchscreen */
> +		touchscreen@4d {
[...]
> +			interrupt-parent = <&gpio>;
> +			interrupts = <TEGRA_GPIO(H, 4) IRQ_TYPE_EDGE_FALLING>;
[...]

Nit: This could use 'interrupts-extended' as it's more readable, I think.
(There are similar cases in other DTs.)

> +	uartb: serial@...06040 {
> +		compatible = "nvidia,tegra30-hsuart";
[...]

I wonder why isn't this in the tegra30.dtsi? The DT shouldn't select a
driver - it should only describe the hardware.

Best Regards
Michał Mirosław