linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7280: Add support for two additional DDR frequencies

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Message-ID: <0c0e3732-54e3-4a4c-ac44-3175180298fd@quicinc.com>
Date: Tue, 1 Jul 2025 11:13:28 -0700
From: Trilok Soni <quic_tsoni@...cinc.com>
To: Pushpendra Singh <quic_pussin@...cinc.com>,
        <cros-qcom-dts-watchers@...omium.org>, <andersson@...nel.org>,
        <konradybcio@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <kernel@...cinc.com>
Subject: Re: [PATCH] arm64: dts: qcom: sc7280: Add support for two additional
 DDR frequencies

On 7/1/2025 12:43 AM, Pushpendra Singh wrote:
> Cc: kernel@...cinc.com, kernel@....qualcomm.com
> 
> The SC7280 SoC now supports two additional frequencies. This patch
> add those frequencies to the BWMON OPP table and updates the frequency
> mapping table accordingly.
> 
> These changes do not impact existing platforms, as the updated mapping
> only affects the highest OPP. On any given platform, this will continue
> to vote for the maximum available OPP.
> 
> Change-Id: Id3a91e065c49848d9af18e5c3edee0836cb693e5

Why Change-Id? 

> Signed-off-by: Pushpendra Singh <quic_pussin@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 64a2abd30100..cb945abf0475 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -620,12 +620,12 @@ cpu4_opp_2208mhz: opp-2208000000 {
>  
>  		cpu4_opp_2400mhz: opp-2400000000 {
>  			opp-hz = /bits/ 64 <2400000000>;
> -			opp-peak-kBps = <8532000 48537600>;
> +			opp-peak-kBps = <12787200 48537600>;
>  		};
>  
>  		cpu4_opp_2611mhz: opp-2611200000 {
>  			opp-hz = /bits/ 64 <2611200000>;
> -			opp-peak-kBps = <8532000 48537600>;
> +			opp-peak-kBps = <12787200 48537600>;
>  		};
>  	};
>  
> @@ -685,22 +685,22 @@ cpu7_opp_2381mhz: opp-2380800000 {
>  
>  		cpu7_opp_2400mhz: opp-2400000000 {
>  			opp-hz = /bits/ 64 <2400000000>;
> -			opp-peak-kBps = <8532000 48537600>;
> +			opp-peak-kBps = <12787200 48537600>;
>  		};
>  
>  		cpu7_opp_2515mhz: opp-2515200000 {
>  			opp-hz = /bits/ 64 <2515200000>;
> -			opp-peak-kBps = <8532000 48537600>;
> +			opp-peak-kBps = <12787200 48537600>;
>  		};
>  
>  		cpu7_opp_2707mhz: opp-2707200000 {
>  			opp-hz = /bits/ 64 <2707200000>;
> -			opp-peak-kBps = <8532000 48537600>;
> +			opp-peak-kBps = <12787200 48537600>;
>  		};
>  
>  		cpu7_opp_3014mhz: opp-3014400000 {
>  			opp-hz = /bits/ 64 <3014400000>;
> -			opp-peak-kBps = <8532000 48537600>;
> +			opp-peak-kBps = <12787200 48537600>;
>  		};
>  	};
>  
> @@ -4013,6 +4013,12 @@ opp-6 {
>  				opp-7 {
>  					opp-peak-kBps = <8532000>;
>  				};
> +				opp-8 {
> +					opp-peak-kBps = <10944000>;
> +				};
> +				opp-9 {
> +					opp-peak-kBps = <12787200>;
> +				};
>  			};
>  		};
>  


-- 
---Trilok Soni