ARM: dts: rockchip: Use rk3288 testout clock as refclk for rk628 hdmi board

Change-Id: I88e156a47f8a486281b340855e8fa85606a2a5c5
Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>

Author: bivvy

arch/arm/boot/dts/rk3288-evb-rk628-rgb2hdmi-avb.dts

@@ -39,6 +39,20 @@
 	status = "okay";
 };
 
+&xin_osc0_func {
+	compatible = "fixed-factor-clock";
+	clocks = <&cru SCLK_TESTOUT>;
+	clock-mult = <1>;
+	clock-div = <1>;
+};
+
+&rk628 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&test_clkout>;
+	assigned-clocks = <&cru SCLK_TESTOUT_SRC>;
+	assigned-clock-parents = <&xin24m>;
+};
+
 &rk628_hdmi {
 	status = "okay";
 
@@ -114,3 +128,11 @@
 	connect = <&vopl_out_rgb>;
 	status = "disabled";
 };
+
+&pinctrl {
+	test {
+		test_clkout: test-clkout {
+			rockchip,pins = <0 17 RK_FUNC_1 &pcfg_pull_none>;
+		};
+	};
+};