linux-kernel - Re: [PATCH] powerpc/fsl: Add cache properties for T2080/T2081

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Message-ID: <877dz9xkhr.fsf@mpe.ellerman.id.au>
Date:   Wed, 25 Mar 2020 12:59:28 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Chris Packham <chris.packham@...iedtelesis.co.nz>,
        robh+dt@...nel.org, mark.rutland@....com, paulus@...ba.org,
        benh@...nel.crashing.org
Cc:     Hamish Martin <hamish.martin@...iedtelesis.co.nz>,
        devicetree@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>,
        Scott Wood <oss@...error.net>
Subject: Re: [PATCH] powerpc/fsl: Add cache properties for T2080/T2081

Chris Packham <chris.packham@...iedtelesis.co.nz> writes:
> Add the d-cache/i-cache properties for the T208x SoCs. The L1 cache on
> these SoCs is 32KiB and is split into 64 byte blocks (lines).
>
> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
> ---
>  arch/powerpc/boot/dts/fsl/t208xsi-pre.dtsi | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)

LGTM.

I'll wait a few days to see if Scott wants to ack it.

cheers


> diff --git a/arch/powerpc/boot/dts/fsl/t208xsi-pre.dtsi b/arch/powerpc/boot/dts/fsl/t208xsi-pre.dtsi
> index 3f745de44284..2ad27e16ac16 100644
> --- a/arch/powerpc/boot/dts/fsl/t208xsi-pre.dtsi
> +++ b/arch/powerpc/boot/dts/fsl/t208xsi-pre.dtsi
> @@ -81,6 +81,10 @@ cpus {
>  		cpu0: PowerPC,e6500@0 {
>  			device_type = "cpu";
>  			reg = <0 1>;
> +			d-cache-line-size = <64>;
> +			i-cache-line-size = <64>;
> +			d-cache-size = <32768>;
> +			i-cache-size = <32768>;
>  			clocks = <&clockgen 1 0>;
>  			next-level-cache = <&L2_1>;
>  			fsl,portid-mapping = <0x80000000>;
> @@ -88,6 +92,10 @@ cpu0: PowerPC,e6500@0 {
>  		cpu1: PowerPC,e6500@2 {
>  			device_type = "cpu";
>  			reg = <2 3>;
> +			d-cache-line-size = <64>;
> +			i-cache-line-size = <64>;
> +			d-cache-size = <32768>;
> +			i-cache-size = <32768>;
>  			clocks = <&clockgen 1 0>;
>  			next-level-cache = <&L2_1>;
>  			fsl,portid-mapping = <0x80000000>;
> @@ -95,6 +103,10 @@ cpu1: PowerPC,e6500@2 {
>  		cpu2: PowerPC,e6500@4 {
>  			device_type = "cpu";
>  			reg = <4 5>;
> +			d-cache-line-size = <64>;
> +			i-cache-line-size = <64>;
> +			d-cache-size = <32768>;
> +			i-cache-size = <32768>;
>  			clocks = <&clockgen 1 0>;
>  			next-level-cache = <&L2_1>;
>  			fsl,portid-mapping = <0x80000000>;
> @@ -102,6 +114,10 @@ cpu2: PowerPC,e6500@4 {
>  		cpu3: PowerPC,e6500@6 {
>  			device_type = "cpu";
>  			reg = <6 7>;
> +			d-cache-line-size = <64>;
> +			i-cache-line-size = <64>;
> +			d-cache-size = <32768>;
> +			i-cache-size = <32768>;
>  			clocks = <&clockgen 1 0>;
>  			next-level-cache = <&L2_1>;
>  			fsl,portid-mapping = <0x80000000>;
> -- 
> 2.25.1