[PATCH v2 10/12] arm64: dts: allwinner: h616: Add LCD timing controller nodes

[Ryan Walklin]

The Allwinner H616 has a display pipeline similar to other Allwinner
devices, specifically the A10, but using a newer display engine
revision (DE33).

Not all output pins are exposed on all package variants, for example
only the H700 and T507 have LCD pins exposed, but all variants support
HDMI output. On the die these are connected to a display engine via a
TCON TOP and one or more timing controllers (TCONs).

Add TCON nodes for the TOP, and the LCD and TV timing controllers. The
timing controllers are compatible with the existing R40 driver.

HDMI output support is not provided in this series so for now note this
within the relevant node to prevent a DT compiler error.

Signed-off-by: Jernej Skrabec <jernej.skrabec at gmail.com>
Signed-off-by: Chris Morgan <macromorgan at hotmail.com>
Signed-off-by: Ryan Walklin <ryan at testtoast.com>

--
Changelog v1..v2:
- Add correct register, address and size cell, and endpoint definitions
- Add stub tcon_lcd0_out_lcd endpoint so that device DTs only need to provide remote endpoint.
---
 .../arm64/boot/dts/allwinner/sun50i-h616.dtsi | 141 ++++++++++++++++++
 1 file changed, 141 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi
index 7347332f54a7..e4209dc6b46b 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi
@@ -7,9 +7,12 @@
 #include <dt-bindings/clock/sun50i-h616-ccu.h>
 #include <dt-bindings/clock/sun50i-h6-r-ccu.h>
 #include <dt-bindings/clock/sun6i-rtc.h>
+#include <dt-bindings/clock/sun8i-de2.h>
+#include <dt-bindings/clock/sun8i-tcon-top.h>
 #include <dt-bindings/reset/sun50i-h616-ccu.h>
 #include <dt-bindings/reset/sun50i-h6-r-ccu.h>
 #include <dt-bindings/thermal/thermal.h>
+#include <dt-bindings/reset/sun8i-de2.h>
 
 / {
 	interrupt-parent = <&gic>;
@@ -926,6 +929,144 @@ ohci3: usb at 5311400 {
 			status = "disabled";
 		};
 
+		tcon_top: tcon-top at 6510000 {
+			compatible = "allwinner,sun50i-h6-tcon-top";
+			reg = <0x06510000 0x1000>;
+			clocks = <&ccu CLK_BUS_TCON_TOP>,
+				 <&ccu CLK_TCON_TV0>;
+			clock-names = "bus", "tcon-tv0";
+			clock-output-names = "tcon-top-tv0";
+			#clock-cells = <1>;
+			resets = <&ccu RST_BUS_TCON_TOP>;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				tcon_top_mixer0_in: port at 0 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0>;
+
+					tcon_top_mixer0_in_mixer0: endpoint at 0 {
+						reg = <0>;
+						remote-endpoint = <&mixer0_out_tcon_top>;
+					};
+				};
+
+				tcon_top_mixer0_out: port at 1 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <1>;
+
+					tcon_top_mixer0_out_tcon_lcd0: endpoint at 0 {
+						reg = <0>;
+						remote-endpoint = <&tcon_lcd0_in_tcon_top_mixer0>;
+					};
+
+					tcon_top_mixer0_out_tcon_tv0: endpoint at 2 {
+						reg = <2>;
+						remote-endpoint = <&tcon_tv0_in_tcon_top_mixer0>;
+					};
+				};
+
+				tcon_top_hdmi_in: port at 4 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <4>;
+
+					tcon_top_hdmi_in_tcon_tv0: endpoint at 0 {
+						reg = <0>;
+						remote-endpoint = <&tcon_tv0_out_tcon_top>;
+					};
+				};
+
+				tcon_top_hdmi_out: port at 5 {
+					reg = <5>;
+
+					tcon_top_hdmi_out_hdmi: endpoint {
+						/* placeholder for HDMI  - remote-endpoint = <&hdmi_in_tcon_top>;*/
+					};
+				};
+			};
+		};
+
+		tcon_lcd0: lcd-controller at 6511000 {
+			compatible = "allwinner,sun8i-r40-tcon-lcd";
+			reg = <0x06511000 0x1000>;
+			interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ccu CLK_BUS_TCON_LCD0>, <&ccu CLK_TCON_LCD0>;
+			clock-names = "ahb", "tcon-ch0";
+			clock-output-names = "tcon-data-clock";
+			#clock-cells = <0>;
+			resets = <&ccu RST_BUS_TCON_LCD0>, <&ccu RST_BUS_LVDS>;
+			reset-names = "lcd", "lvds";
+			status = "disabled";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				tcon_lcd0_in: port at 0 {
+					reg = <0>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					tcon_lcd0_in_tcon_top_mixer0: endpoint {
+						remote-endpoint = <&tcon_top_mixer0_out_tcon_lcd0>;
+					};
+				};
+
+				tcon_lcd0_out: port at 1 {
+					reg = <1>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					tcon_lcd0_out_lcd: endpoint at 0 {
+						reg = <0>;
+					};
+				};
+			};
+		};
+
+		tcon_tv0: lcd-controller at 6515000 {
+			compatible = "allwinner,sun50i-h6-tcon-tv",
+				     "allwinner,sun8i-r40-tcon-tv";
+			reg = <0x06515000 0x1000>;
+			interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ccu CLK_BUS_TCON_TV0>,
+				 <&tcon_top CLK_TCON_TOP_TV0>;
+			clock-names = "ahb", "tcon-ch1";
+			#clock-cells = <0>;
+			resets = <&ccu RST_BUS_TCON_TV0>;
+			reset-names = "lcd";
+			status = "disabled";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				tcon_tv0_in: port at 0 {
+					reg = <0>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+					tcon_tv0_in_tcon_top_mixer0: endpoint {
+						remote-endpoint = <&tcon_top_mixer0_out_tcon_tv0>;
+					};
+				};
+
+				tcon_tv0_out: port at 1 {
+					reg = <1>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+					tcon_tv0_out_tcon_top: endpoint at 1 {
+						reg = <1>;
+						remote-endpoint = <&tcon_top_hdmi_in_tcon_tv0>;
+					};
+				};
+			};
+		};
+
 		rtc: rtc at 7000000 {
 			compatible = "allwinner,sun50i-h616-rtc";
 			reg = <0x07000000 0x400>;
-- 
2.50.1