Reset the DSI hardware is needed to prevent different settings between
the bootloader and the kernel.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
---
arch/arm64/boot/dts/mediatek/mt8173.dtsi | 2 ++
include/dt-bindings/reset/mt8173-resets.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
index e5596fe01a1d..36c3998eb7f1 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@ -1036,6 +1036,7 @@ mmsys: syscon@14000000 {
assigned-clocks = <&topckgen CLK_TOP_MM_SEL>;
assigned-clock-rates = <400000000>;
#clock-cells = <1>;
+ #reset-cells = <1>;
mboxes = <&gce 0 CMDQ_THR_PRIO_HIGHEST>,
<&gce 1 CMDQ_THR_PRIO_HIGHEST>;
mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
@@ -1262,6 +1263,7 @@ dsi0: dsi@1401b000 {
<&mmsys CLK_MM_DSI0_DIGITAL>,
<&mipi_tx0>;
clock-names = "engine", "digital", "hs";
+ resets = <&mmsys MT8173_MMSYS_SW0_RST_B_DISP_DSI0>;
phys = <&mipi_tx0>;
phy-names = "dphy";
status = "disabled";
diff --git a/include/dt-bindings/reset/mt8173-resets.h b/include/dt-bindings/reset/mt8173-resets.h
index ba8636eda5ae..6a60c7cecc4c 100644
--- a/include/dt-bindings/reset/mt8173-resets.h
+++ b/include/dt-bindings/reset/mt8173-resets.h
@@ -27,6 +27,8 @@
#define MT8173_INFRA_GCE_FAXI_RST 40
#define MT8173_INFRA_MMIOMMURST 47
+/* MMSYS resets */
+#define MT8173_MMSYS_SW0_RST_B_DISP_DSI0 25
/* PERICFG resets */
#define MT8173_PERI_UART0_SW_RST 0
--
2.30.2
