arm64: dts: mediatek: mt8188: Add base display controller graph

The display related IPs in MT8188 are flexible and support being
interconnected with different instances of DDP IPs and/or with
different DDP IPs, forming a full Display Data Path that ends
with an actual display output, which is board specific.

Add a common graph in the main mt8188.dtsi devicetree, which is
shared between all of the currently supported boards.
All boards featuring any display functionality will extend this
common graph to hook the display controller of the SoC to their
specific output port(s).

Tested-by: Chen-Yu Tsai <wenst@chromium.org> # On MT8188 Ciri (int. and ext.)
Link: https://lore.kernel.org/r/20250220110948.45596-2-angelogioacchino.delregno@collabora.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8188.dtsi b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
index b117c51dd67329c0f350a44ea9f499b937cbacf0..69a8423d3858903325ac807de3ef87c63d2a9e1f 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8188.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8188.dtsi
@@ -2555,6 +2555,23 @@
                        iommus = <&vdo_iommu M4U_PORT_L0_DISP_OVL0_RDMA0>;
                        power-domains = <&spm MT8188_POWER_DOMAIN_VDOSYS0>;
                        mediatek,gce-client-reg = <&gce0 SUBSYS_1c00XXXX 0x0000 0x1000>;
+
+                       ports {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               port@0 {
+                                       reg = <0>;
+                                       ovl0_in: endpoint { };
+                               };
+
+                               port@1 {
+                                       reg = <1>;
+                                       ovl0_out: endpoint {
+                                               remote-endpoint = <&rdma0_in>;
+                                       };
+                               };
+                       };
                };
 
                rdma0: rdma@1c002000 {
@@ -2565,6 +2582,25 @@
                        iommus = <&vdo_iommu M4U_PORT_L1_DISP_RDMA0>;
                        power-domains = <&spm MT8188_POWER_DOMAIN_VDOSYS0>;
                        mediatek,gce-client-reg = <&gce0 SUBSYS_1c00XXXX 0x2000 0x1000>;
+
+                       ports {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               port@0 {
+                                       reg = <0>;
+                                       rdma0_in: endpoint {
+                                               remote-endpoint = <&ovl0_out>;
+                                       };
+                               };
+
+                               port@1 {
+                                       reg = <1>;
+                                       rdma0_out: endpoint {
+                                               remote-endpoint = <&color0_in>;
+                                       };
+                               };
+                       };
                };
 
                color0: color@1c003000 {
@@ -2574,6 +2610,25 @@
                        interrupts = <GIC_SPI 639 IRQ_TYPE_LEVEL_HIGH 0>;
                        power-domains = <&spm MT8188_POWER_DOMAIN_VDOSYS0>;
                        mediatek,gce-client-reg = <&gce0 SUBSYS_1c00XXXX 0x3000 0x1000>;
+
+                       ports {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               port@0 {
+                                       reg = <0>;
+                                       color0_in: endpoint {
+                                               remote-endpoint = <&rdma0_out>;
+                                       };
+                               };
+
+                               port@1 {
+                                       reg = <1>;
+                                       color0_out: endpoint {
+                                               remote-endpoint = <&ccorr0_in>;
+                                       };
+                               };
+                       };
                };
 
                ccorr0: ccorr@1c004000 {
@@ -2583,6 +2638,25 @@
                        interrupts = <GIC_SPI 640 IRQ_TYPE_LEVEL_HIGH 0>;
                        power-domains = <&spm MT8188_POWER_DOMAIN_VDOSYS0>;
                        mediatek,gce-client-reg = <&gce0 SUBSYS_1c00XXXX 0x4000 0x1000>;
+
+                       ports {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               port@0 {
+                                       reg = <0>;
+                                       ccorr0_in: endpoint {
+                                               remote-endpoint = <&color0_out>;
+                                       };
+                               };
+
+                               port@1 {
+                                       reg = <1>;
+                                       ccorr0_out: endpoint {
+                                               remote-endpoint = <&aal0_in>;
+                                       };
+                               };
+                       };
                };
 
                aal0: aal@1c005000 {
@@ -2592,6 +2666,25 @@
                        interrupts = <GIC_SPI 641 IRQ_TYPE_LEVEL_HIGH 0>;
                        power-domains = <&spm MT8188_POWER_DOMAIN_VDOSYS0>;
                        mediatek,gce-client-reg = <&gce0 SUBSYS_1c00XXXX 0x5000 0x1000>;
+
+                       ports {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               port@0 {
+                                       reg = <0>;
+                                       aal0_in: endpoint {
+                                               remote-endpoint = <&ccorr0_out>;
+                                       };
+                               };
+
+                               port@1 {
+                                       reg = <1>;
+                                       aal0_out: endpoint {
+                                               remote-endpoint = <&gamma0_in>;
+                                       };
+                               };
+                       };
                };
 
                gamma0: gamma@1c006000 {
@@ -2601,6 +2694,23 @@
                        interrupts = <GIC_SPI 642 IRQ_TYPE_LEVEL_HIGH 0>;
                        power-domains = <&spm MT8188_POWER_DOMAIN_VDOSYS0>;
                        mediatek,gce-client-reg = <&gce0 SUBSYS_1c00XXXX 0x6000 0x1000>;
+
+                       ports {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               port@0 {
+                                       reg = <0>;
+                                       gamma0_in: endpoint {
+                                               remote-endpoint = <&aal0_out>;
+                                       };
+                               };
+
+                               port@1 {
+                                       reg = <1>;
+                                       gamma0_out: endpoint { };
+                               };
+                       };
                };
 
                dither0: dither@1c007000 {
@@ -2610,6 +2720,21 @@
                        interrupts = <GIC_SPI 643 IRQ_TYPE_LEVEL_HIGH 0>;
                        power-domains = <&spm MT8188_POWER_DOMAIN_VDOSYS0>;
                        mediatek,gce-client-reg = <&gce0 SUBSYS_1c00XXXX 0x7000 0x1000>;
+
+                       ports {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               port@0 {
+                                       reg = <0>;
+                                       dither0_in: endpoint { };
+                               };
+
+                               port@1 {
+                                       reg = <1>;
+                                       dither0_out: endpoint { };
+                               };
+                       };
                };
 
                disp_dsi0: dsi@1c008000 {
@@ -2692,6 +2817,21 @@
                        interrupts = <GIC_SPI 661 IRQ_TYPE_LEVEL_HIGH 0>;
                        power-domains = <&spm MT8188_POWER_DOMAIN_VDOSYS0>;
                        mediatek,gce-client-reg = <&gce0 SUBSYS_1c01XXXX 0xa000 0x1000>;
+
+                       ports {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               port@0 {
+                                       reg = <0>;
+                                       postmask0_in: endpoint { };
+                               };
+
+                               port@1 {
+                                       reg = <1>;
+                                       postmask0_out: endpoint { };
+                               };
+                       };
                };
 
                vdosys0: syscon@1c01d000 {