linux-kernel - Re: [PATCH 2/2] arm64: dts: ti: k3-j7200-main: Switch MAIN R5F cluster to Split-mode

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Message-ID: <20230329124923.aoa3ufn4g34b2zjm@unvisited>
Date:   Wed, 29 Mar 2023 07:49:23 -0500
From:   Nishanth Menon <nm@...com>
To:     Apurva Nandan <a-nandan@...com>
CC:     Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] arm64: dts: ti: k3-j7200-main: Switch MAIN R5F
 cluster to Split-mode

On 12:07-20230329, Apurva Nandan wrote:
> From: Suman Anna <s-anna@...com>
> 
> J7200 SoCs has a R5F cluster in each of the MAIN and MCU domains, and both
> of these are configured for LockStep mode at the moment. Switch the MAIN
> R5F cluster to Split mode by default to maximize the number of R5F cores.
> The MCU R5F cluster continues to be in the preferred LockStep mode.
> 
> Note that this configuration is the default for remoteproc mode (kernel
> driver boots the R5F processors). These will be overridden for early-booted
> remoteprocs through the corresponding IPC-only support in the K3 R5F
> remoteproc driver.

Same comment as #1.

> 
> Signed-off-by: Suman Anna <s-anna@...com>
> Signed-off-by: Apurva Nandan <a-nandan@...com>
> ---
>  arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> index 138381f43ce4..573a7f949b1d 100644
> --- a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> @@ -797,7 +797,7 @@ watchdog1: watchdog@...0000 {
>  
>  	main_r5fss0: r5fss@...0000 {
>  		compatible = "ti,j7200-r5fss";
> -		ti,cluster-mode = <1>;
> +		ti,cluster-mode = <0>;
>  		#address-cells = <1>;
>  		#size-cells = <1>;
>  		ranges = <0x5c00000 0x00 0x5c00000 0x20000>,
> -- 
> 2.34.1
> 

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D