linux-kernel - Re: [PATCH v2 1/2] arm64: dts: qcom: sm8550: Fix SPMI channels size

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Message-ID: <aa2d04ec-96eb-4fac-bd38-4770002bf6f8@linaro.org>
Date: Wed, 21 Feb 2024 14:48:46 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Abel Vesa <abel.vesa@...aro.org>, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] arm64: dts: qcom: sm8550: Fix SPMI channels size

On 21/02/2024 14:04, Abel Vesa wrote:
> The actual size of the channels registers region is 4MB, according to the
> documentation. This issue was not caught until now because the driver was
> supposed to allow same regions being mapped multiple times for supporting
> multiple buses. Thie driver is using platform_get_resource_byname() and
> devm_ioremap() towards that purpose, which intentionally avoids
> devm_request_mem_region() altogether.
> 
> Fixes: ffc50b2d3828 ("arm64: dts: qcom: Add base SM8550 dtsi")
> Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/sm8550.dtsi | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
> index 7474cddf7ad3..3904348075f6 100644
> --- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
> @@ -3318,7 +3318,7 @@ sram@...0000 {
>   		spmi_bus: spmi@...0000 {
>   			compatible = "qcom,spmi-pmic-arb";
>   			reg = <0 0x0c400000 0 0x3000>,
> -			      <0 0x0c500000 0 0x4000000>,
> +			      <0 0x0c500000 0 0x400000>,
>   			      <0 0x0c440000 0 0x80000>,
>   			      <0 0x0c4c0000 0 0x20000>,
>   			      <0 0x0c42d000 0 0x4000>;
> 

Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8550-QRD