drm/sun4i: tcon: add support for V3s TCON

Allwinner V3s SoC features a TCON without channel 1.

Add support for it.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
Reviewed-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

drivers/gpu/drm/sun4i/sun4i_drv.c

@@ -178,7 +178,8 @@ static bool sun4i_drv_node_is_tcon(struct device_node *node)
 	return of_device_is_compatible(node, "allwinner,sun5i-a13-tcon") ||
 		of_device_is_compatible(node, "allwinner,sun6i-a31-tcon") ||
 		of_device_is_compatible(node, "allwinner,sun6i-a31s-tcon") ||
-		of_device_is_compatible(node, "allwinner,sun8i-a33-tcon");
+		of_device_is_compatible(node, "allwinner,sun8i-a33-tcon") ||
+		of_device_is_compatible(node, "allwinner,sun8i-v3s-tcon");
 }
 
 static int compare_of(struct device *dev, void *data)

drivers/gpu/drm/sun4i/sun4i_tcon.c

@@ -601,11 +601,16 @@ static const struct sun4i_tcon_quirks sun8i_a33_quirks = {
 	/* nothing is supported */
 };
 
+static const struct sun4i_tcon_quirks sun8i_v3s_quirks = {
+	/* nothing is supported */
+};
+
 static const struct of_device_id sun4i_tcon_of_table[] = {
 	{ .compatible = "allwinner,sun5i-a13-tcon", .data = &sun5i_a13_quirks },
 	{ .compatible = "allwinner,sun6i-a31-tcon", .data = &sun6i_a31_quirks },
 	{ .compatible = "allwinner,sun6i-a31s-tcon", .data = &sun6i_a31s_quirks },
 	{ .compatible = "allwinner,sun8i-a33-tcon", .data = &sun8i_a33_quirks },
+	{ .compatible = "allwinner,sun8i-v3s-tcon", .data = &sun8i_v3s_quirks },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, sun4i_tcon_of_table);