arm64: dts: qcom: sm8250: Add MDSS_CORE reset to mdss

[PATCH RFT] arm64: dts: qcom: sm8250: Add MDSS_CORE reset to mdss

Posted by Luca Weiss 2 months, 2 weeks 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.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
---
Not tested on a device, but should be necessary on v6.17 kernel.
---
 arch/arm64/boot/dts/qcom/sm8250.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index b30aea8b05409094837ad494389d7c22fa1ba7dd..9bcb2c4c34388f343fb93083977b8d2e9a724bb3 100644
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -4687,6 +4687,8 @@ mdss: display-subsystem@ae00000 {
 
 			iommus = <&apps_smmu 0x820 0x402>;
 
+			resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
+
 			status = "disabled";
 
 			#address-cells = <2>;

---
base-commit: e5f0a698b34ed76002dc5cff3804a61c80233a7a
change-id: 20250930-sm8250-mdss-reset-307c3e921d03

Best regards,
-- 
Luca Weiss <luca.weiss@fairphone.com>

Re: [PATCH RFT] arm64: dts: qcom: sm8250: Add MDSS_CORE reset to mdss

Posted by Bjorn Andersson 1 month, 2 weeks ago

On Tue, 30 Sep 2025 09:37:22 +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.
> 
> 

Applied, thanks!

[1/1] arm64: dts: qcom: sm8250: Add MDSS_CORE reset to mdss
      commit: 8b4faf419d601cead68d7821618369e2c0338b86

Best regards,
-- 
Bjorn Andersson <andersson@kernel.org>

Re: [PATCH RFT] arm64: dts: qcom: sm8250: Add MDSS_CORE reset to mdss

Posted by Dmitry Baryshkov 2 months, 2 weeks ago

On Tue, Sep 30, 2025 at 09:37:22AM +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.
> 
> Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
> ---
> Not tested on a device, but should be necessary on v6.17 kernel.
> ---
>  arch/arm64/boot/dts/qcom/sm8250.dtsi | 2 ++
>  1 file changed, 2 insertions(+)
> 

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


Tested-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> # RB5


-- 
With best wishes
Dmitry