linux-kernel - Re: [PATCH v2 11/13] arm64: dts: qcom: sm6350: Remove reg-names property from LLCC node

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Date:   Tue, 13 Dec 2022 10:39:19 +0530
From:   Sai Prakash Ranjan <quic_saipraka@...cinc.com>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        <andersson@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <bp@...en8.de>,
        <tony.luck@...el.com>
CC:     <konrad.dybcio@...aro.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <james.morse@....com>,
        <mchehab@...nel.org>, <rric@...nel.org>,
        <linux-edac@...r.kernel.org>, <quic_ppareek@...cinc.com>,
        <luca.weiss@...rphone.com>, <stable@...r.kernel.org>
Subject: Re: [PATCH v2 11/13] arm64: dts: qcom: sm6350: Remove reg-names
 property from LLCC node

On 12/12/2022 6:03 PM, Manivannan Sadhasivam wrote:
> The LLCC block has several banks each with a different base address
> and holes in between. So it is not a correct approach to cover these
> banks with a single offset/size. Instead, the individual bank's base
> address needs to be specified in devicetree with the exact size.
> 
> On SM6350, there is only one LLCC bank available. So only change needed is
> to remove the reg-names property from LLCC node to conform to the binding.
> 
> The driver is expected to parse the reg field based on index to get the
> addresses of each LLCC banks.
> 
> Cc: <stable@...r.kernel.org> # 5.16
> Fixes: ced2f0d75e13 ("arm64: dts: qcom: sm6350: Add LLCC node")
> Reported-by: Parikshit Pareek <quic_ppareek@...cinc.com>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/sm6350.dtsi | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6350.dtsi b/arch/arm64/boot/dts/qcom/sm6350.dtsi
> index 43324bf291c3..1f39627cd7c6 100644
> --- a/arch/arm64/boot/dts/qcom/sm6350.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm6350.dtsi
> @@ -1174,7 +1174,6 @@ dc_noc: interconnect@...0000 {
>   		system-cache-controller@...0000 {
>   			compatible = "qcom,sm6350-llcc";
>   			reg = <0 0x09200000 0 0x50000>, <0 0x09600000 0 0x50000>;
> -			reg-names = "llcc_base", "llcc_broadcast_base";
>   		};
>   
>   		gem_noc: interconnect@...0000 {

Reviewed-by: Sai Prakash Ranjan <quic_saipraka@...cinc.com>