[PATCH v3 3/6] arm64: dts: exynos7870: add DSI support

Kaustabh Chakraborty
2025-09-28T17:57:28Z

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>
---
arch/arm64/boot/dts/exynos/exynos7870.dtsi | 84 ++++++++++++++++++++++++++++++
1 file changed, 84 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos7870.dtsi b/arch/arm64/boot/dts/exynos/exynos7870.dtsi
index d5d347623b9038b71da55dccdc9084aeaf71618c..2827e10d69625a22328eb20183dc354c9acbfb8e 100644
--- a/arch/arm64/boot/dts/exynos/exynos7870.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7870.dtsi
@@ -178,6 +178,14 @@ pmu_system_controller: system-controller@10480000 {
"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_isp: clock-controller@144d0000 {
<&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_dispaud: clock-controller@148d0000 {
<&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 {

--
2.51.0