From: Kaustabh Chakraborty <kauschluss@disroot.org>
Date: Thu, 30 Oct 2025 19:20:16 +0000 (+0530)
Subject: arm64: dts: exynos7870: add DSI support
X-Git-Tag: v6.19-rc1~100^2~30^2~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fe02894a1930c85e542e5dd2044e6a3afcf717a7;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: exynos7870: add DSI support

Add devicetree nodes for MIPI PHYs, Samsung's DECON and DSIM blocks, and
DECON IOMMU devicetree nodes. Enables SoC support for hardware to be
able to drive a MIPI DSI display.

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Link: https://patch.msgid.link/20251031-exynos7870-drm-dts-v4-2-c1f77fb16b87@disroot.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---

diff --git a/arch/arm64/boot/dts/exynos/exynos7870.dtsi b/arch/arm64/boot/dts/exynos/exynos7870.dtsi
index d5d347623b903..2827e10d69625 100644
--- a/arch/arm64/boot/dts/exynos/exynos7870.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7870.dtsi
@@ -178,6 +178,14 @@
 				     "samsung,exynos7-pmu", "syscon";
 			reg = <0x10480000 0x10000>;
 
+			mipi_phy: mipi-phy {
+				compatible = "samsung,exynos7870-mipi-video-phy";
+				#phy-cells = <1>;
+
+				samsung,cam0-sysreg = <&syscon_cam0>;
+				samsung,disp-sysreg = <&syscon_disp>;
+			};
+
 			reboot-mode {
 				compatible = "syscon-reboot-mode";
 				offset = <0x080c>;
@@ -675,6 +683,77 @@
 				 <&cmu_mif CLK_GOUT_MIF_CMU_ISP_VRA>;
 		};
 
+		syscon_cam0: system-controller@144f1040 {
+			compatible = "samsung,exynos7870-cam0-sysreg", "syscon";
+			reg = <0x144f1040 0x04>;
+		};
+
+		dsi: dsi@14800000 {
+			compatible = "samsung,exynos7870-mipi-dsi";
+			reg = <0x14800000 0x100>;
+			interrupts = <GIC_SPI 207 IRQ_TYPE_LEVEL_HIGH>;
+
+			clocks = <&cmu_dispaud CLK_GOUT_DISPAUD_BUS_DISP>,
+				 <&cmu_dispaud CLK_GOUT_DISPAUD_APB_DISP>,
+				 <&cmu_dispaud CLK_GOUT_DISPAUD_MUX_MIPIPHY_TXBYTECLKHS_USER>,
+				 <&cmu_dispaud CLK_GOUT_DISPAUD_MUX_MIPIPHY_RXCLKESC0_USER>;
+			clock-names = "bus", "pll", "byte", "esc";
+
+			phys = <&mipi_phy 1>;
+			phy-names = "dsim";
+
+			status = "disabled";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+
+					dsi_to_decon: endpoint {
+						remote-endpoint = <&decon_to_dsi>;
+					};
+				};
+			};
+		};
+
+		decon: display-controller@14830000 {
+			compatible = "samsung,exynos7870-decon";
+			reg = <0x14830000 0x8000>;
+			interrupts = <GIC_SPI 201 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 202 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 203 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "fifo", "vsync", "lcd_sys";
+
+			clocks = <&cmu_dispaud CLK_GOUT_DISPAUD_MUX_PLL>,
+				 <&cmu_dispaud CLK_GOUT_DISPAUD_MUX_BUS_USER>,
+				 <&cmu_dispaud CLK_GOUT_DISPAUD_MUX_DECON_ECLK>,
+				 <&cmu_dispaud CLK_GOUT_DISPAUD_MUX_DECON_VCLK>;
+			clock-names = "pclk_decon0", "aclk_decon0",
+				      "decon0_eclk", "decon0_vclk";
+
+			iommus = <&sysmmu_decon>;
+
+			status = "disabled";
+
+			port {
+				decon_to_dsi: endpoint {
+					remote-endpoint = <&dsi_to_decon>;
+				};
+			};
+		};
+
+		sysmmu_decon: iommu@14860000 {
+			compatible = "samsung,exynos-sysmmu";
+			reg = <0x14860000 0x1000>;
+			interrupts = <GIC_SPI 193 IRQ_TYPE_LEVEL_HIGH>;
+			#iommu-cells = <0>;
+
+			clocks = <&cmu_dispaud CLK_GOUT_DISPAUD_MUX_BUS_USER>;
+			clock-names = "sysmmu";
+		};
+
 		pinctrl_dispaud: pinctrl@148c0000 {
 			compatible = "samsung,exynos7870-pinctrl";
 			reg = <0x148c0000 0x1000>;
@@ -692,6 +771,11 @@
 				 <&cmu_mif CLK_GOUT_MIF_CMU_DISPAUD_DECON_ECLK>,
 				 <&cmu_mif CLK_GOUT_MIF_CMU_DISPAUD_DECON_VCLK>;
 		};
+
+		syscon_disp: system-controller@148f100c {
+			compatible = "samsung,exynos7870-disp-sysreg", "syscon";
+			reg = <0x148f100c 0x04>;
+		};
 	};
 
 	timer {