linux-kernel - Re: [PATCH 2/3] arm64: dts: sc7180: add bus clock to mdp node for sc7180 target

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Message-ID: <20200910220037.GA472@uller>
Date:   Thu, 10 Sep 2020 22:00:37 +0000
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Kalyan Thota <kalyan_t@...eaurora.org>
Cc:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        Krishna Manikandan <mkrishn@...eaurora.org>,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        seanpaul@...omium.org, hoegsberg@...omium.org,
        dianders@...omium.org, jsanka@...eaurora.org,
        travitej@...eaurora.org, nganji@...eaurora.org
Subject: Re: [PATCH 2/3] arm64: dts: sc7180: add bus clock to mdp node for
 sc7180 target

On Thu 16 Jul 11:35 UTC 2020, Kalyan Thota wrote:

> From: Krishna Manikandan <mkrishn@...eaurora.org>
> 
> Move the bus clock to mdp device node,in order
> to facilitate bus band width scaling on sc7180
> target.
> 
> The parent device MDSS will not vote for bus bw,
> instead the vote will be triggered by mdp device
> node. Since a minimum vote is required to turn
> on bus clock, move the clock node to mdp device
> from where the votes are requested.
> 
> This patch has dependency on the below series
> https://patchwork.kernel.org/patch/11468783/
> 

Isn't this dependency on an old revision of patch 3/3 in this series?

Regardless, I don't see either the linked patch or patch 3 merged in
linux-next, so I presume I should not merge this?

Regards,
Bjorn

> Signed-off-by: Krishna Manikandan <mkrishn@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index 4f2c0d1..31fed6d 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -1510,10 +1510,9 @@
>  			power-domains = <&dispcc MDSS_GDSC>;
>  
>  			clocks = <&gcc GCC_DISP_AHB_CLK>,
> -				 <&gcc GCC_DISP_HF_AXI_CLK>,
>  				 <&dispcc DISP_CC_MDSS_AHB_CLK>,
>  				 <&dispcc DISP_CC_MDSS_MDP_CLK>;
> -			clock-names = "iface", "bus", "ahb", "core";
> +			clock-names = "iface", "ahb", "core";
>  
>  			assigned-clocks = <&dispcc DISP_CC_MDSS_MDP_CLK>;
>  			assigned-clock-rates = <300000000>;
> @@ -1539,12 +1538,13 @@
>  				      <0 0x0aeb0000 0 0x2008>;
>  				reg-names = "mdp", "vbif";
>  
> -				clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
> +				clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
> +					 <&dispcc DISP_CC_MDSS_AHB_CLK>,
>  					 <&dispcc DISP_CC_MDSS_ROT_CLK>,
>  					 <&dispcc DISP_CC_MDSS_MDP_LUT_CLK>,
>  					 <&dispcc DISP_CC_MDSS_MDP_CLK>,
>  					 <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> -				clock-names = "iface", "rot", "lut", "core",
> +				clock-names = "bus", "iface", "rot", "lut", "core",
>  					      "vsync";
>  				assigned-clocks = <&dispcc DISP_CC_MDSS_MDP_CLK>,
>  						  <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> -- 
> 1.9.1
>