[PATCH 4/6] arm64: dts: mt8183: Add the mmsys reset bit to reset the dsi0

[Enric Balletbo i Serra]

Reset the DSI hardware is needed to prevent different settings between
the bootloader and the kernel.

While here, also remove the undocumented and also not used
'mediatek,syscon-dsi' property.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo at collabora.com>
---

 arch/arm64/boot/dts/mediatek/mt8183.dtsi  | 3 ++-
 include/dt-bindings/reset/mt8183-resets.h | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index 085e2c96b5f4..2d02365633c3 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -1286,6 +1286,7 @@ mmsys: syscon at 14000000 {
 			compatible = "mediatek,mt8183-mmsys", "syscon";
 			reg = <0 0x14000000 0 0x1000>;
 			#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>;
@@ -1400,11 +1401,11 @@ dsi0: dsi at 14014000 {
 			reg = <0 0x14014000 0 0x1000>;
 			interrupts = <GIC_SPI 236 IRQ_TYPE_LEVEL_LOW>;
 			power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
-			mediatek,syscon-dsi = <&mmsys 0x140>;
 			clocks = <&mmsys CLK_MM_DSI0_MM>,
 				 <&mmsys CLK_MM_DSI0_IF>,
 				 <&mipi_tx0>;
 			clock-names = "engine", "digital", "hs";
+			resets = <&mmsys MT8183_MMSYS_SW0_RST_B_DISP_DSI0>;
 			phys = <&mipi_tx0>;
 			phy-names = "dphy";
 		};
diff --git a/include/dt-bindings/reset/mt8183-resets.h b/include/dt-bindings/reset/mt8183-resets.h
index a1bbd41e0d12..48c5d2de0a38 100644
--- a/include/dt-bindings/reset/mt8183-resets.h
+++ b/include/dt-bindings/reset/mt8183-resets.h
@@ -80,6 +80,9 @@
 
 #define MT8183_INFRACFG_SW_RST_NUM				128
 
+/* MMSYS resets */
+#define MT8183_MMSYS_SW0_RST_B_DISP_DSI0			25
+
 #define MT8183_TOPRGU_MM_SW_RST					1
 #define MT8183_TOPRGU_MFG_SW_RST				2
 #define MT8183_TOPRGU_VENC_SW_RST				3
-- 
2.30.2