linux-kernel - [PATCH] arm64: dts: ti: k3-am69-sk: remove assigned-clock-parents for unused VP

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Date: Thu, 21 Dec 2023 17:00:42 +0530
From: Jayesh Choudhary <j-choudhary@...com>
To: <nm@...com>, <vigneshr@...com>
CC: <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <a-bhatia1@...com>, <rogerq@...nel.org>, <sabiya.d@...com>,
        <u-kumar1@...com>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <j-choudhary@...com>
Subject: [PATCH] arm64: dts: ti: k3-am69-sk: remove assigned-clock-parents for unused VP

VP2 and VP3 are unused video ports and VP3 share the same parent
clock as VP1 causing issue with pixel clock setting for HDMI (VP1).
So remove the parent clocks for unused VPs.

Fixes: 6f8605fd7d11 ("arm64: dts: ti: k3-am69-sk: Add DP and HDMI support")
Reported-by: Nishanth Menon <nm@...com>
Closes: https://storage.kernelci.org/mainline/master/v6.7-rc6/arm64/defconfig/gcc-10/lab-ti/baseline-nfs-am69_sk-fs.txt
Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
---

Local testing log for HDMI on AM69-SK:
<https://gist.github.com/Jayesh2000/517395cd85eb28d65b8ee4568cefb809>

 arch/arm64/boot/dts/ti/k3-am69-sk.dts | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk.dts b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
index 8da591579868..370980eb59b0 100644
--- a/arch/arm64/boot/dts/ti/k3-am69-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
@@ -918,13 +918,9 @@ &dss {
 	pinctrl-names = "default";
 	pinctrl-0 = <&dss_vout0_pins_default>;
 	assigned-clocks = <&k3_clks 218 2>,
-			  <&k3_clks 218 5>,
-			  <&k3_clks 218 14>,
-			  <&k3_clks 218 18>;
+			  <&k3_clks 218 5>;
 	assigned-clock-parents = <&k3_clks 218 3>,
-				 <&k3_clks 218 7>,
-				 <&k3_clks 218 16>,
-				 <&k3_clks 218 22>;
+				 <&k3_clks 218 7>;
 };
 
 &serdes_wiz4 {
-- 
2.25.1