[PATCH v2] ARM: dts: qcom: msm8974: add MDSS reset

[Dmitry Baryshkov]

Commit 13a4b7fb6260 ("pmdomain: core: Leave powered-on genpds on until
late_initcall_sync") kept power-domains on longer during boot which is
causing DSI clock to get stuck and fail to acquire its configuration on
DSI bringup. Follow the example of other platforms and add MDSS reset to
the display subsystem node, fixing DSI issues.

Fixes: 5a9fc531f6ec ("ARM: dts: msm8974: add display support")
Suggested-by: Stephan Gerhold <stephan.gerhold@xxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
---
Changes in v2:
- Replaced GENPD_FLAG_NO_STAY_ON on MDSS domain with MDSS_RESET being
  specified to the MDSS node (Stephan).
- Link to v1: https://patch.msgid.link/20260809-msm8974-mmcc-fix-v1-1-50f2dcf18d2e@xxxxxxxxxxxxxxxx
---
 arch/arm/boot/dts/qcom/qcom-msm8974.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/boot/dts/qcom/qcom-msm8974.dtsi b/arch/arm/boot/dts/qcom/qcom-msm8974.dtsi
index 06c0af0aa317..f300de74c47d 100644
--- a/arch/arm/boot/dts/qcom/qcom-msm8974.dtsi
+++ b/arch/arm/boot/dts/qcom/qcom-msm8974.dtsi
@@ -10,6 +10,7 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/power/qcom-rpmpd.h>
 #include <dt-bindings/reset/qcom,gcc-msm8974.h>
+#include <dt-bindings/reset/qcom,mmcc-msm8974.h>
 
 / {
 	#address-cells = <1>;
@@ -1935,6 +1936,8 @@ mdss: display-subsystem@fd900000 {
 			interrupt-controller;
 			#interrupt-cells = <1>;
 
+			resets = <&mmcc MDSS_RESET>;
+
 			status = "disabled";
 
 			#address-cells = <1>;

---
base-commit: 6b8c8af514d739d0335f5579b585e02babe8a727
change-id: 20260809-msm8974-mmcc-fix-c83b5fa916af

Best regards,
--  
With best wishes
Dmitry