[PATCH 1/5] arm64: dts: qcom: shikra: Add MDSS display subsystem
From: Nabige Aala
Date: Sat Jun 27 2026 - 06:02:59 EST
Add the SoC-level display subsystem nodes for Shikra: MDSS wrapper,
DPU display controller, DSI host controller, and 14nm DSI PHY.
Shikra uses DPU 6.5 hardware (same as QCM2290). Platform-specific
compatible strings are used as the primary match with QCM2290 fallbacks
to reuse the existing driver support.
The dispcc clock inputs for the DSI byte and pixel PLLs are wired
from mdss_dsi0_phy.
Signed-off-by: Nabige Aala <nabige.aala@xxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/shikra.dtsi | 203 ++++++++++++++++++++++++++++++++++-
1 file changed, 201 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/shikra.dtsi b/arch/arm64/boot/dts/qcom/shikra.dtsi
index e67fe047a683..3c8eda0a518b 100644
--- a/arch/arm64/boot/dts/qcom/shikra.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra.dtsi
@@ -4,6 +4,7 @@
*/
#include <dt-bindings/clock/qcom,dispcc-qcm2290.h>
+#include <dt-bindings/clock/qcom,dsi-phy-28nm.h>
#include <dt-bindings/clock/qcom,qcm2290-gpucc.h>
#include <dt-bindings/clock/qcom,rpmcc.h>
#include <dt-bindings/clock/qcom,shikra-gcc.h>
@@ -1990,6 +1991,204 @@ gpucc: clock-controller@5990000 {
#power-domain-cells = <1>;
};
+ mdss: display-subsystem@5e00000 {
+ compatible = "qcom,shikra-mdss", "qcom,qcm2290-mdss";
+ reg = <0x0 0x05e00000 0x0 0x1000>;
+ reg-names = "mdss";
+ interrupts = <GIC_SPI 186 IRQ_TYPE_LEVEL_HIGH 0>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+
+ clocks = <&gcc GCC_DISP_AHB_CLK>,
+ <&gcc GCC_DISP_HF_AXI_CLK>,
+ <&dispcc DISP_CC_MDSS_MDP_CLK>;
+ clock-names = "iface",
+ "bus",
+ "core";
+
+ resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
+
+ power-domains = <&dispcc MDSS_GDSC>;
+
+ iommus = <&apps_smmu 0x420 0x2>;
+ interconnects = <&mmrt_virt MASTER_MDP_PORT0 RPM_ALWAYS_TAG
+ &mc_virt SLAVE_EBI_CH0 RPM_ALWAYS_TAG>,
+ <&mem_noc MASTER_AMPSS_M0 RPM_ALWAYS_TAG
+ &config_noc SLAVE_DISPLAY_CFG RPM_ALWAYS_TAG>;
+ interconnect-names = "mdp0-mem",
+ "cpu-cfg";
+
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ status = "disabled";
+
+ mdp: display-controller@5e01000 {
+ compatible = "qcom,shikra-dpu", "qcom,qcm2290-dpu";
+ reg = <0x0 0x05e01000 0x0 0x8f000>,
+ <0x0 0x05eb0000 0x0 0x3000>;
+ reg-names = "mdp",
+ "vbif";
+
+ interrupt-parent = <&mdss>;
+ interrupts = <0>;
+
+ clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
+ <&dispcc DISP_CC_MDSS_AHB_CLK>,
+ <&dispcc DISP_CC_MDSS_MDP_CLK>,
+ <&dispcc DISP_CC_MDSS_MDP_LUT_CLK>,
+ <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
+ clock-names = "bus",
+ "iface",
+ "core",
+ "lut",
+ "vsync";
+
+ operating-points-v2 = <&mdp_opp_table>;
+ power-domains = <&rpmpd QCM2290_VDDCX>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ dpu_intf1_out: endpoint {
+ remote-endpoint = <&mdss_dsi0_in>;
+ };
+ };
+ };
+
+ mdp_opp_table: opp-table {
+ compatible = "operating-points-v2";
+
+ opp-19200000 {
+ opp-hz = /bits/ 64 <19200000>;
+ required-opps = <&rpmpd_opp_min_svs>;
+ };
+
+ opp-192000000 {
+ opp-hz = /bits/ 64 <192000000>;
+ required-opps = <&rpmpd_opp_low_svs>;
+ };
+
+ opp-256000000 {
+ opp-hz = /bits/ 64 <256000000>;
+ required-opps = <&rpmpd_opp_svs>;
+ };
+
+ opp-307200000 {
+ opp-hz = /bits/ 64 <307200000>;
+ required-opps = <&rpmpd_opp_svs_plus>;
+ };
+
+ opp-384000000 {
+ opp-hz = /bits/ 64 <384000000>;
+ required-opps = <&rpmpd_opp_nom>;
+ };
+ };
+ };
+
+ mdss_dsi0: dsi@5e94000 {
+ compatible = "qcom,shikra-dsi-ctrl",
+ "qcom,qcm2290-dsi-ctrl",
+ "qcom,mdss-dsi-ctrl";
+ reg = <0x0 0x05e94000 0x0 0x400>;
+ reg-names = "dsi_ctrl";
+
+ interrupt-parent = <&mdss>;
+ interrupts = <4>;
+
+ clocks = <&dispcc DISP_CC_MDSS_BYTE0_CLK>,
+ <&dispcc DISP_CC_MDSS_BYTE0_INTF_CLK>,
+ <&dispcc DISP_CC_MDSS_PCLK0_CLK>,
+ <&dispcc DISP_CC_MDSS_ESC0_CLK>,
+ <&dispcc DISP_CC_MDSS_AHB_CLK>,
+ <&gcc GCC_DISP_HF_AXI_CLK>;
+ clock-names = "byte",
+ "byte_intf",
+ "pixel",
+ "core",
+ "iface",
+ "bus";
+
+ assigned-clocks = <&dispcc DISP_CC_MDSS_BYTE0_CLK_SRC>,
+ <&dispcc DISP_CC_MDSS_PCLK0_CLK_SRC>;
+ assigned-clock-parents = <&mdss_dsi0_phy DSI_BYTE_PLL_CLK>,
+ <&mdss_dsi0_phy DSI_PIXEL_PLL_CLK>;
+
+ operating-points-v2 = <&dsi_opp_table>;
+ power-domains = <&rpmpd QCM2290_VDDCX>;
+ phys = <&mdss_dsi0_phy>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ status = "disabled";
+
+ dsi_opp_table: opp-table {
+ compatible = "operating-points-v2";
+
+ opp-19200000 {
+ opp-hz = /bits/ 64 <19200000>;
+ required-opps = <&rpmpd_opp_min_svs>;
+ };
+
+ opp-164000000 {
+ opp-hz = /bits/ 64 <164000000>;
+ required-opps = <&rpmpd_opp_low_svs>;
+ };
+
+ opp-187500000 {
+ opp-hz = /bits/ 64 <187500000>;
+ required-opps = <&rpmpd_opp_svs>;
+ };
+ };
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ mdss_dsi0_in: endpoint {
+ remote-endpoint = <&dpu_intf1_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ mdss_dsi0_out: endpoint {
+ };
+ };
+ };
+ };
+
+ mdss_dsi0_phy: phy@5e94400 {
+ compatible = "qcom,dsi-phy-14nm-2290";
+ reg = <0x0 0x05e94400 0x0 0x100>,
+ <0x0 0x05e94500 0x0 0x300>,
+ <0x0 0x05e94800 0x0 0x188>;
+ reg-names = "dsi_phy",
+ "dsi_phy_lane",
+ "dsi_pll";
+
+ clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
+ <&rpmcc RPM_SMD_XO_CLK_SRC>;
+ clock-names = "iface",
+ "ref";
+
+ power-domains = <&rpmpd QCM2290_VDDMX>;
+ required-opps = <&rpmpd_opp_nom>;
+
+ #clock-cells = <1>;
+ #phy-cells = <0>;
+
+ status = "disabled";
+ };
+ };
+
dispcc: clock-controller@5f00000 {
compatible = "qcom,shikra-dispcc", "qcom,qcm2290-dispcc";
reg = <0x0 0x05f00000 0x0 0x20000>;
@@ -1997,8 +2196,8 @@ dispcc: clock-controller@5f00000 {
<&rpmcc RPM_SMD_XO_A_CLK_SRC>,
<&gcc GCC_DISP_GPLL0_CLK_SRC>,
<&gcc GCC_DISP_GPLL0_DIV_CLK_SRC>,
- <0>,
- <0>,
+ <&mdss_dsi0_phy DSI_BYTE_PLL_CLK>,
+ <&mdss_dsi0_phy DSI_PIXEL_PLL_CLK>,
<0>,
<0>,
<&sleep_clk>;
--
2.34.1