linux-kernel - [PATCH v5 2/5] arm64/dts/qcom/sc7180: remove assigned-clock-rate property for mdp clk

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Message-Id: <1646758500-3776-3-git-send-email-quic_vpolimer@quicinc.com>
Date:   Tue,  8 Mar 2022 22:24:57 +0530
From:   Vinod Polimera <quic_vpolimer@...cinc.com>
To:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     Vinod Polimera <quic_vpolimer@...cinc.com>,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        dianders@...omium.org, swboyd@...omium.org,
        quic_kalyant@...cinc.com
Subject: [PATCH v5 2/5] arm64/dts/qcom/sc7180: remove assigned-clock-rate property for mdp clk

Kernel clock driver assumes that initial rate is the
max rate for that clock and was not allowing it to scale
beyond the assigned clock value.

Drop the assigned clock rate property and vote on the mdp clock as per
calculated value during the usecase.

Fixes: a3db7ad1af("arm64: dts: qcom: sc7180: add display dt nodes")
Signed-off-by: Vinod Polimera <quic_vpolimer@...cinc.com>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
---
 arch/arm64/boot/dts/qcom/sc7180.dtsi | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index e1c46b8..eaab746 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -2900,9 +2900,6 @@
 				 <&dispcc DISP_CC_MDSS_MDP_CLK>;
 			clock-names = "iface", "ahb", "core";
 
-			assigned-clocks = <&dispcc DISP_CC_MDSS_MDP_CLK>;
-			assigned-clock-rates = <300000000>;
-
 			interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
 			interrupt-controller;
 			#interrupt-cells = <1>;
@@ -2932,12 +2929,10 @@
 					 <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
 				clock-names = "bus", "iface", "rot", "lut", "core",
 					      "vsync";
-				assigned-clocks = <&dispcc DISP_CC_MDSS_MDP_CLK>,
-						  <&dispcc DISP_CC_MDSS_VSYNC_CLK>,
+				assigned-clocks = <&dispcc DISP_CC_MDSS_VSYNC_CLK>,
 						  <&dispcc DISP_CC_MDSS_ROT_CLK>,
 						  <&dispcc DISP_CC_MDSS_AHB_CLK>;
-				assigned-clock-rates = <300000000>,
-						       <19200000>,
+				assigned-clock-rates = <19200000>,
 						       <19200000>,
 						       <19200000>;
 				operating-points-v2 = <&mdp_opp_table>;
-- 
2.7.4