arm64: dts: allwinner: a64: explicitly assign clock parent for TCON0

TCON0 seems to need a different clock parent depending on output type.
For RGB it has to be PLL-VIDEO0-2X, while for DSI it has to be PLL-MIPI,
so select it explicitly.

Video output doesn't work if incorrect clock is assigned.

On my Pinebook I manually configured PLL-VIDEO0-2X and PLL-MIPI to the same
rate, and while video output works fine with PLL-VIDEO0-2X, it doesn't
work at all (as in no picture) with PLL-MIPI.

Fixes: ca1170b ("clk: sunxi-ng: a64: force select PLL_MIPI in TCON0 mux")
Reviewed-by: Dragan Simic <[email protected]>
Reviewed-by: Chen-Yu Tsai <[email protected]>
Tested-by: Frank Oltmanns <[email protected]> # on PinePhone
Tested-by: Stuart Gathman <[email protected]> # on OG Pinebook
Signed-off-by: Vasily Khoruzhick <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Chen-Yu Tsai <[email protected]>

Author: anarsoul

arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts

@@ -390,6 +390,8 @@
 &tcon0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&lcd_rgb666_pins>;
+	assigned-clocks = <&ccu CLK_TCON0>;
+	assigned-clock-parents = <&ccu CLK_PLL_VIDEO0_2X>;
 
 	status = "okay";
 };

arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts

@@ -369,6 +369,8 @@
 &tcon0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&lcd_rgb666_pins>;
+	assigned-clocks = <&ccu CLK_TCON0>;
+	assigned-clock-parents = <&ccu CLK_PLL_VIDEO0_2X>;
 
 	status = "okay";
 };

arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi

@@ -445,6 +445,8 @@
 			clock-names = "ahb", "tcon-ch0";
 			clock-output-names = "tcon-data-clock";
 			#clock-cells = <0>;
+			assigned-clocks = <&ccu CLK_TCON0>;
+			assigned-clock-parents = <&ccu CLK_PLL_MIPI>;
 			resets = <&ccu RST_BUS_TCON0>, <&ccu RST_BUS_LVDS>;
 			reset-names = "lcd", "lvds";