[PATCH 3/3] arm64: dts: qcom: sm6350: Add MDSS_CORE reset to mdss

Luca Weiss posted 3 patches 1 week, 5 days ago
[PATCH 3/3] arm64: dts: qcom: sm6350: Add MDSS_CORE reset to mdss
Posted by Luca Weiss 1 week, 5 days ago
Like on other platforms, if the OS does not support recovering the state
left by the bootloader it needs access to MDSS_CORE, so that it can
clear the MDSS configuration. Add a reference to the relevant reset.

This also fixes display init on Linux v6.17.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
---
 arch/arm64/boot/dts/qcom/sm6350.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6350.dtsi b/arch/arm64/boot/dts/qcom/sm6350.dtsi
index ff1eb2c53e7b865350d00ffbfa82d7d1e3cc5aa0..929c8a8b2d446505228531bfc55f3350ef2980b7 100644
--- a/arch/arm64/boot/dts/qcom/sm6350.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6350.dtsi
@@ -2150,6 +2150,8 @@ &clk_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ALWAYS>,
 			power-domains = <&dispcc MDSS_GDSC>;
 			iommus = <&apps_smmu 0x800 0x2>;
 
+			resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
+
 			#address-cells = <2>;
 			#size-cells = <2>;
 			ranges;

-- 
2.51.0
Re: [PATCH 3/3] arm64: dts: qcom: sm6350: Add MDSS_CORE reset to mdss
Posted by Dmitry Baryshkov 1 week, 5 days ago
On Fri, Sep 19, 2025 at 11:57:25AM +0200, Luca Weiss wrote:
> Like on other platforms, if the OS does not support recovering the state
> left by the bootloader it needs access to MDSS_CORE, so that it can
> clear the MDSS configuration. Add a reference to the relevant reset.
> 
> This also fixes display init on Linux v6.17.
> 
> Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
> ---
>  arch/arm64/boot/dts/qcom/sm6350.dtsi | 2 ++
>  1 file changed, 2 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>


-- 
With best wishes
Dmitry