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

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Message-ID: <d9c9cb80-0331-4cf0-9988-15f571d4cf7c@oss.qualcomm.com>
Date: Mon, 23 Dec 2024 13:25:40 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Pengyu Luo <mitltlatltl@...il.com>, johan+linaro@...nel.org,
        konrad.dybcio@....qualcomm.com
Cc: andersson@...nel.org, chenxuecong2009@...look.com, conor+dt@...nel.org,
        devicetree@...r.kernel.org, gty0622@...il.com, konradybcio@...nel.org,
        krzk+dt@...nel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, robh@...nel.org
Subject: Re: [PATCH v2 3/3] arm64: dts: qcom: sc8280xp: Add Huawei Matebook E
 Go (sc8280xp)

On 21.12.2024 8:57 AM, Pengyu Luo wrote:
> Messing up, reply again to fix thread.
> 
> On Sat, Dec 21, 2024 at 5:14 AM Konrad Dybcio <konrad.dybcio@....qualcomm.com> wrote:
>> On 20.12.2024 5:05 PM, Pengyu Luo wrote:
>>
> 
> [...]
> 
>>> +     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.
>>
> 
> In v1, you asked me

Ahh sorry, I churn through a lot of emails and sometimes forget things.

> 
>> Very very weird. Are you booting with clk_ignore_unused pd_ignore_unused
>> in kernel cmdline?
> 
> I said yes, as Johan suggested in here (see [1]). I am adding Johan.
> 
>> Could you share your .config file?
> 
> Here please, https://pastebin.com/UKew61ZC

All the things one would expect for efifb to show up seem to be there.

Maybe try earlycon=efifb video=efifb?

Konrad