drm/sun4i: Add support for D1 mixers

D1 has a display engine with the usual pair of mixers, albeit with
relatively few layers. In fact, D1 appears to be the first SoC to have
a mixer without any UI layers. Add support for these new variants.

Acked-by: Jernej Skrabec <[e-mail]>
Signed-off-by: Samuel Holland <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/sun4i/sun8i_mixer.c

···
 	.mod_rate = 150000000,
 };
 
+static const struct sun8i_mixer_cfg sun20i_d1_mixer0_cfg = {
+	.ccsc		= CCSC_D1_MIXER0_LAYOUT,
+	.mod_rate	= 297000000,
+	.scaler_mask	= 0x3,
+	.scanline_yuv	= 2048,
+	.ui_num		= 1,
+	.vi_num		= 1,
+};
+
+static const struct sun8i_mixer_cfg sun20i_d1_mixer1_cfg = {
+	.ccsc		= CCSC_MIXER1_LAYOUT,
+	.mod_rate	= 297000000,
+	.scaler_mask	= 0x1,
+	.scanline_yuv	= 1024,
+	.ui_num		= 0,
+	.vi_num		= 1,
+};
+
 static const struct sun8i_mixer_cfg sun50i_a64_mixer0_cfg = {
 	.ccsc		= CCSC_MIXER0_LAYOUT,
 	.mod_rate	= 297000000,
···
 	{
 		.compatible = "allwinner,sun8i-v3s-de2-mixer",
 		.data = &sun8i_v3s_mixer_cfg,
+	},
+	{
+		.compatible = "allwinner,sun20i-d1-de2-mixer-0",
+		.data = &sun20i_d1_mixer0_cfg,
+	},
+	{
+		.compatible = "allwinner,sun20i-d1-de2-mixer-1",
+		.data = &sun20i_d1_mixer1_cfg,
 	},
 	{
 		.compatible = "allwinner,sun50i-a64-de2-mixer-0",