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drm/panel: sitronix-st7789v: add Inanbo T28CP45TN89 support

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UNI-T UTi260b has a Inanbo T28CP45TN89 v17 panel. I could not find
proper documentation for the panel apart from a technical drawing, but
according to the vendor U-Boot it is based on a Sitronix st7789v chip.
I generated the init sequence by modifying the default one until proper
graphics output has been seen on the device.

Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-14-sre@kernel.org
This commit is contained in:
Sebastian Reichel 2023-07-14 03:37:50 +02:00 committed by Neil Armstrong
parent e4572f99f8
commit a411558cc1
1 changed files with 25 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

25
drivers/gpu/drm/panel/panel-sitronix-st7789v.c
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@ -173,6 +173,21 @@ static const struct drm_display_mode default_mode = {
.flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC,
};
static const struct drm_display_mode t28cp45tn89_mode = {
.clock = 6008,
.hdisplay = 240,
.hsync_start = 240 + 38,
.hsync_end = 240 + 38 + 10,
.htotal = 240 + 38 + 10 + 10,
.vdisplay = 320,
.vsync_start = 320 + 8,
.vsync_end = 320 + 8 + 4,
.vtotal = 320 + 8 + 4 + 4,
.width_mm = 43,
.height_mm = 57,
.flags = DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC,
};
static const struct st7789_panel_info default_panel = {
.mode = &default_mode,
.invert_mode = true,
@ -181,6 +196,14 @@ static const struct st7789_panel_info default_panel = {
DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
};
static const struct st7789_panel_info t28cp45tn89_panel = {
.mode = &t28cp45tn89_mode,
.invert_mode = false,
.bus_format = MEDIA_BUS_FMT_RGB565_1X16,
.bus_flags = DRM_BUS_FLAG_DE_HIGH |
DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE,
};
static int st7789v_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
@ -446,12 +469,14 @@ static void st7789v_remove(struct spi_device *spi)
static const struct spi_device_id st7789v_spi_id[] = {
{ "st7789v", (unsigned long) &default_panel },
{ "t28cp45tn89-v17", (unsigned long) &t28cp45tn89_panel },
{ }
};
MODULE_DEVICE_TABLE(spi, st7789v_spi_id);
static const struct of_device_id st7789v_of_match[] = {
{ .compatible = "sitronix,st7789v", .data = &default_panel },
{ .compatible = "inanbo,t28cp45tn89-v17", .data = &t28cp45tn89_panel },
{ }
};
MODULE_DEVICE_TABLE(of, st7789v_of_match);