linux-kernel - Re: [RFT PATCH v2 09/14] arm64: dts: qcom: sc7280: split TCSR halt regs out of mutex

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 17 Aug 2022 23:03:22 +0200
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Lee Jones <lee@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFT PATCH v2 09/14] arm64: dts: qcom: sc7280: split TCSR halt
 regs out of mutex



On 17.08.2022 15:03, Krzysztof Kozlowski wrote:
> The TCSR halt regs are next to TCSR mutex, so before converting the TCSR
> mutex into device with address space, we need to split the halt regs to
> its own syscon device.  This also describes more accurately the devices
> and their IO address space, and allows to remove incorrect syscon
> compatible from TCSR mutex:
> 
>   qcom/sc7280-herobrine-crd.dtb: hwlock@...0000: compatible: ['qcom,tcsr-mutex', 'syscon'] is too long
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
Not tested on a device, but looks good to the eye:
Reviewed-by: Konrad Dybcio <konrad.dybcio@...ainline.org>

Konrad
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 19 ++++++++++++-------
>  1 file changed, 12 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 13d7f267b289..89a8e6b9822a 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -2155,12 +2155,17 @@ ipa: ipa@...0000 {
>  		};
>  
>  		tcsr_mutex: hwlock@...0000 {
> -			compatible = "qcom,tcsr-mutex", "syscon";
> -			reg = <0 0x01f40000 0 0x40000>;
> +			compatible = "qcom,tcsr-mutex";
> +			reg = <0 0x01f40000 0 0x20000>;
>  			#hwlock-cells = <1>;
>  		};
>  
> -		tcsr: syscon@...0000 {
> +		tcsr_1: sycon@...0000 {
> +			compatible = "qcom,sc7280-tcsr", "syscon";
> +			reg = <0 0x01f60000 0 0x20000>;
> +		};
> +
> +		tcsr_2: syscon@...0000 {
>  			compatible = "qcom,sc7280-tcsr", "syscon";
>  			reg = <0 0x01fc0000 0 0x30000>;
>  		};
> @@ -2522,9 +2527,9 @@ remoteproc_mpss: remoteproc@...0000 {
>  				 <&pdc_reset PDC_MODEM_SYNC_RESET>;
>  			reset-names = "mss_restart", "pdc_reset";
>  
> -			qcom,halt-regs = <&tcsr_mutex 0x23000 0x25000 0x28000 0x33000>;
> -			qcom,ext-regs = <&tcsr 0x10000 0x10004 &tcsr_mutex 0x26004 0x26008>;
> -			qcom,qaccept-regs = <&tcsr_mutex 0x23030 0x23040 0x23020>;
> +			qcom,halt-regs = <&tcsr_1 0x3000 0x5000 0x8000 0x13000>;
> +			qcom,ext-regs = <&tcsr_2 0x10000 0x10004 &tcsr_1 0x6004 0x6008>;
> +			qcom,qaccept-regs = <&tcsr_1 0x3030 0x3040 0x3020>;
>  
>  			status = "disabled";
>  
> @@ -3259,7 +3264,7 @@ remoteproc_wpss: remoteproc@...0000 {
>  				 <&pdc_reset PDC_WPSS_SYNC_RESET>;
>  			reset-names = "restart", "pdc_sync";
>  
> -			qcom,halt-regs = <&tcsr_mutex 0x37000>;
> +			qcom,halt-regs = <&tcsr_1 0x17000>;
>  
>  			status = "disabled";
>