This adds support for the Kaohsiung Opto-Electronics.,
TX31D200VM0BAA 12.3" HSXGA LVDS panel, which can be
supported by the simple panel driver.

Signed-off-by: Jagan Teki <ja...@amarulasolutions.com>
Reviewed-by: Rob Herring <r...@kernel.org>
---
Changes for v3:
- collect Rob reiew tag 
Changes for v2:
- Updated binding info about optional properties, node and example

 .../bindings/display/panel/koe,tx31d200vm0baa.txt  | 25 ++++++++++++++++++++
 drivers/gpu/drm/panel/panel-simple.c               | 27 ++++++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 
Documentation/devicetree/bindings/display/panel/koe,tx31d200vm0baa.txt

diff --git 
a/Documentation/devicetree/bindings/display/panel/koe,tx31d200vm0baa.txt 
b/Documentation/devicetree/bindings/display/panel/koe,tx31d200vm0baa.txt
new file mode 100644
index 0000000..6a036ed
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/koe,tx31d200vm0baa.txt
@@ -0,0 +1,25 @@
+Kaohsiung Opto-Electronics. TX31D200VM0BAA 12.3" HSXGA LVDS panel
+
+This binding is compatible with the simple-panel binding, which is specified
+in simple-panel.txt in this directory.
+
+Required properties:
+- compatible: should be "koe,tx31d200vm0baa"
+
+Optional properties:
+- backlight: phandle of the backlight device attached to the panel
+
+Optional nodes:
+- Video port for LVDS panel input.
+
+Example:
+       panel {
+               compatible = "koe,tx31d200vm0baa";
+               backlight = <&backlight_lvds>;
+
+               port {
+                       panel_in: endpoint {
+                               remote-endpoint = <&lvds0_out>;
+                       };
+               };
+       };
diff --git a/drivers/gpu/drm/panel/panel-simple.c 
b/drivers/gpu/drm/panel/panel-simple.c
index 2ecc14b..8a0e4a8 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1241,6 +1241,30 @@ static const struct panel_desc innolux_zj070na_01p = {
        },
 };
 
+static const struct display_timing koe_tx31d200vm0baa_timing = {
+       .pixelclock = { 39600000, 43200000, 48000000 },
+       .hactive = { 1280, 1280, 1280 },
+       .hfront_porch = { 16, 36, 56 },
+       .hback_porch = { 16, 36, 56 },
+       .hsync_len = { 8, 8, 8 },
+       .vactive = { 480, 480, 480 },
+       .vfront_porch = { 6, 21, 33.5 },
+       .vback_porch = { 6, 21, 33.5 },
+       .vsync_len = { 8, 8, 8 },
+       .flags = DISPLAY_FLAGS_DE_HIGH,
+};
+
+static const struct panel_desc koe_tx31d200vm0baa = {
+       .timings = &koe_tx31d200vm0baa_timing,
+       .num_timings = 1,
+       .bpc = 6,
+       .size = {
+               .width = 292,
+               .height = 109,
+       },
+       .bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
+};
+
 static const struct display_timing kyo_tcg121xglp_timing = {
        .pixelclock = { 52000000, 65000000, 71000000 },
        .hactive = { 1024, 1024, 1024 },
@@ -2151,6 +2175,9 @@ static const struct of_device_id platform_of_match[] = {
                .compatible = "innolux,zj070na-01p",
                .data = &innolux_zj070na_01p,
        }, {
+               .compatible = "koe,tx31d200vm0baa",
+               .data = &koe_tx31d200vm0baa,
+       }, {
                .compatible = "kyo,tcg121xglp",
                .data = &kyo_tcg121xglp,
        }, {
-- 
2.7.4

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