linux-kernel - Re: [PATCH 2/2] arm64: dts: qcom: sdm850-huawei-matebook-e-2019: Correct ipa_fw

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Message-ID: <vlz4zg6wnxvxz2hqpzinzxztghwxmx2wwkxl4ami42aqvdjkg5@7o4fvadz76cv>
Date: Wed, 10 Dec 2025 01:08:41 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Jingzhou Zhu <newwheatzjz@...omail.com>
Cc: andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sdm850-huawei-matebook-e-2019:
 Correct ipa_fw_mem for the driver to load successfully

On Mon, Dec 08, 2025 at 11:15:11AM +0800, Jingzhou Zhu wrote:
> The ipa driver refuses to load with the old ipa_fw_mem in newer kernels.
> Shrinking its size to 0x5a000 fixes the problem.
> 
> Fixes: aab69794b55d ("arm64: dts: qcom: Add support for Huawei MateBook E 2019")
> 
> Signed-off-by: Jingzhou Zhu <newwheatzjz@...omail.com>

There should be no empty lines between tags.

> ---
>  arch/arm64/boot/dts/qcom/sdm850-huawei-matebook-e-2019.dts | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm850-huawei-matebook-e-2019.dts b/arch/arm64/boot/dts/qcom/sdm850-huawei-matebook-e-2019.dts
> index a5f025ae7dbe..f04865381870 100644
> --- a/arch/arm64/boot/dts/qcom/sdm850-huawei-matebook-e-2019.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm850-huawei-matebook-e-2019.dts
> @@ -144,12 +144,12 @@ wlan_msa_mem: wlan-msa@...00000 {
>  		};
>  
>  		ipa_fw_mem: ipa-fw@...00000 {
> -			reg = <0 0x8df00000 0 0x100000>;
> +			reg = <0 0x8df00000 0 0x5a000>;
>  			no-map;
>  		};
>  
> -		gpu_mem: gpu@...00000 {
> -			reg = <0 0x97900000 0 0x5000>;
> +		gpu_mem: gpu@...5a000 {

Why are you adjusting gpu_mem?

> +			reg = <0 0x8df5a000 0 0x5000>;
>  			no-map;
>  		};
>  
> -- 
> 2.47.3
> 

-- 
With best wishes
Dmitry