drm/panel: khadas-ts050: update timings to achieve 60Hz refresh rate

This updates the panel timings to achieve a clean 60Hz refresh rate.

Reviewed-by: Nicolas Belin <nbelin@baylibre.com>
Tested-by: Nicolas Belin <nbelin@baylibre.com> # on Khadas VIM3 + TS050 Panel
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512-amlogic-v6-4-upstream-dsi-ccf-vim3-v5-13-56eb7a4d5b8e@linaro.org

Author: superna9999

drivers/gpu/drm/panel/panel-khadas-ts050.c

@@ -568,7 +568,7 @@ static const struct khadas_ts050_panel_cmd init_code[] = {
 	{0xfb, 0x01},
 	/* Select CMD1 */
 	{0xff, 0x00},
-	{0xd3, 0x05}, /* RGBMIPICTRL: VSYNC back porch = 5 */
+	{0xd3, 0x22}, /* RGBMIPICTRL: VSYNC back porch = 34 */
 	{0xd4, 0x04}, /* RGBMIPICTRL: VSYNC front porch = 4 */
 };
 
@@ -717,15 +717,15 @@ static int khadas_ts050_panel_disable(struct drm_panel *panel)
 }
 
 static const struct drm_display_mode default_mode = {
-	.clock = 120000,
-	.hdisplay = 1088,
-	.hsync_start = 1088 + 104,
-	.hsync_end = 1088 + 104 + 4,
-	.htotal = 1088 + 104 + 4 + 127,
+	.clock = 160000,
+	.hdisplay = 1080,
+	.hsync_start = 1080 + 117,
+	.hsync_end = 1080 + 117 + 5,
+	.htotal = 1080 + 117 + 5 + 160,
 	.vdisplay = 1920,
 	.vsync_start = 1920 + 4,
-	.vsync_end = 1920 + 4 + 2,
-	.vtotal = 1920 + 4 + 2 + 3,
+	.vsync_end = 1920 + 4 + 3,
+	.vtotal = 1920 + 4 + 3 + 31,
 	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
 };