arm64: dts: qcom: sm6115: Add missing MDSS core reset

To make sure the display subsystem starts in a predictable state, we
need to reset it. Otherwise, unpredictable issues can happen, e.g.
on the motorola-guamp smartphone DSI would not transmit anything.

Wire up the reset to fix.

Fixes: 705e50427d81 ("arm64: dts: qcom: sm6115: Add mdss/dpu node")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Val Packett <val@packett.cool>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260303034847.13870-6-val@packett.cool
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/arch/arm64/boot/dts/qcom/sm6115.dtsi b/arch/arm64/boot/dts/qcom/sm6115.dtsi
index e9336adbc39184374eb7e2d38eb5c01b7be4c947..3a9a1ad8d5816283464954c264b856001717bc5e 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sm6115.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm6115.dtsi
@@ -1864,6 +1864,8 @@
                                 <&gcc GCC_DISP_HF_AXI_CLK>,
                                 <&dispcc DISP_CC_MDSS_MDP_CLK>;
 
+                       resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
+
                        interrupts = <GIC_SPI 186 IRQ_TYPE_LEVEL_HIGH>;
                        interrupt-controller;
                        #interrupt-cells = <1>;