linux-kernel - Re: [PATCH v2 3/3] arm64: dts: qcom: sc8280xp: Add Huawei Matebook E Go (sc8280xp)

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Message-ID: <d46f0ad4-4319-496f-9093-54bb5a000875@oss.qualcomm.com>
Date: Fri, 20 Dec 2024 22:13:55 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Pengyu Luo <mitltlatltl@...il.com>, andersson@...nel.org,
        conor+dt@...nel.org, konradybcio@...nel.org, krzk+dt@...nel.org,
        robh@...nel.org
Cc: chenxuecong2009@...look.com, devicetree@...r.kernel.org, gty0622@...il.com,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] arm64: dts: qcom: sc8280xp: Add Huawei Matebook E
 Go (sc8280xp)

On 20.12.2024 5:05 PM, Pengyu Luo wrote:
> Add an initial devicetree for the Huawei Matebook E Go, which is based on
> sc8280xp.
> 
> There are 3 variants, Huawei released first 2 at the same time.
> Huawei Matebook E Go LTE(sc8180x), codename should be gaokun2.
> Huawei Matebook E Go(sc8280xp@...GHz), codename is gaokun3.
> Huawei Matebook E Go 2023(sc8280xp@...9GHz).
> 
> We add support for the latter two variants.
> 
> This work started by Tianyu Gao and Xuecong Chen, they made the
> devicetree based on existing work(i.e. the Lenovo X13s and the
> Qualcomm CRD), it can boot with framebuffer.
> 

So this looks good now, but

[...]

> +	chosen {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		framebuffer0: framebuffer@...00000 {
> +			compatible = "simple-framebuffer";
> +			reg = <0x0 0xc6200000 0x0 0x02400000>;
> +			width = <1600>;
> +			height = <2560>;
> +			stride = <(1600 * 4)>;
> +			format = "a8r8g8b8";
> +		};
> +	};

I still don't understand why efifb doesn't work for you.

Could you share your .config file?

Konrad