Add support for Innolux G156HCE-L01 15.6" 1920x1080 24bpp
dual-link LVDS TFT panel. Documentation is available at [1].
The middle frequency is tuned slightly upward from 70.93 MHz
to 72 MHz, otherwise the panel shows slight flicker.

[1] 
https://www.distec.de/fileadmin/pdf/produkte/TFT-Displays/Innolux/G156HCE-L01_Rev.C3_Datasheet.pdf

Signed-off-by: Marek Vasut <ma...@denx.de>
---
Cc: Conor Dooley <conor...@kernel.org>
Cc: Daniel Vetter <dan...@ffwll.ch>
Cc: David Airlie <airl...@gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski...@linaro.org>
Cc: Neil Armstrong <neil.armstr...@linaro.org>
Cc: Rob Herring <robh...@kernel.org>
Cc: Sam Ravnborg <s...@ravnborg.org>
Cc: Thierry Reding <thierry.red...@gmail.com>
Cc: devicet...@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
---
 drivers/gpu/drm/panel/panel-simple.c | 34 ++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-simple.c 
b/drivers/gpu/drm/panel/panel-simple.c
index 396a22177c674..417dd69054fc1 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2377,6 +2377,37 @@ static const struct panel_desc innolux_g121x1_l03 = {
        },
 };
 
+static const struct display_timing innolux_g156hce_l01_timings = {
+       .pixelclock = { 120000000, 144000000, 150000000 },
+       .hactive = { 1920, 1920, 1920 },
+       .hfront_porch = { 80, 90, 100 },
+       .hback_porch = { 80, 90, 100 },
+       .hsync_len = { 20, 30, 30 },
+       .vactive = { 1080, 1080, 1080 },
+       .vfront_porch = { 3, 10, 20 },
+       .vback_porch = { 3, 10, 20 },
+       .vsync_len = { 4, 10, 10 },
+};
+
+static const struct panel_desc innolux_g156hce_l01 = {
+       .timings = &innolux_g156hce_l01_timings,
+       .num_timings = 1,
+       .bpc = 8,
+       .size = {
+               .width = 344,
+               .height = 194,
+       },
+       .delay = {
+               .prepare = 1,           /* T1+T2 */
+               .enable = 450,          /* T5 */
+               .disable = 200,         /* T6 */
+               .unprepare = 10,        /* T3+T7 */
+       },
+       .bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
+       .bus_flags = DRM_BUS_FLAG_DE_HIGH,
+       .connector_type = DRM_MODE_CONNECTOR_LVDS,
+};
+
 static const struct drm_display_mode innolux_n156bge_l21_mode = {
        .clock = 69300,
        .hdisplay = 1366,
@@ -4243,6 +4274,9 @@ static const struct of_device_id platform_of_match[] = {
        }, {
                .compatible = "innolux,g121x1-l03",
                .data = &innolux_g121x1_l03,
+       }, {
+               .compatible = "innolux,g156hce-l01",
+               .data = &innolux_g156hce_l01,
        }, {
                .compatible = "innolux,n156bge-l21",
                .data = &innolux_n156bge_l21,
-- 
2.40.1

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