This is a note to let you know that I've just added the patch titled
arm64: dts: qcom: sdm845: use dispcc AHB clock for mdss node
to the 5.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-dts-qcom-sdm845-use-dispcc-ahb-clock-for-mdss-.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2a3722686e092393dd59f310a65b5bd13ce1b1ae
Author: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Date: Tue May 31 15:47:35 2022 +0300
arm64: dts: qcom: sdm845: use dispcc AHB clock for mdss node
[ Upstream commit 3ba500dee327e0261e728edec8a4f2f563d2760c ]
It was noticed that on sdm845 after an MDSS suspend/resume cycle the
driver can not read HW_REV registers properly (they will return 0
instead). Chaning the "iface" clock from <&gcc GCC_DISP_AHB_CLK> to
<&dispcc DISP_CC_MDSS_AHB_CLK> fixes the issue.
Fixes: 08c2a076d18f ("arm64: dts: qcom: sdm845: Add dpu to sdm845 dts file")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220531124735.1165582-1-dmitry.baryshkov@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index b31bf62e8680..ad21cf465c98 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -4238,7 +4238,7 @@ mdss: mdss@ae00000 {
power-domains = <&dispcc MDSS_GDSC>;
- clocks = <&gcc GCC_DISP_AHB_CLK>,
+ clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
<&dispcc DISP_CC_MDSS_MDP_CLK>;
clock-names = "iface", "core";
