On 08/06/2025 16:28, Marek Vasut wrote:
Not all panels use all 4 data lanes, so allow configuration based
on the compatible string.
Signed-off-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx>
---
Based on https://github.com/raspberrypi/linux 0d7ac78a3dd9 ("Extending ili9881c driver support for nwe080 panel")
by Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx> and others
---
Cc: Conor Dooley <conor+dt@xxxxxxxxxx>
Cc: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxxx>
Cc: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Maxime Ripard <mripard@xxxxxxxxxx>
Cc: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: Simona Vetter <simona@xxxxxxxx>
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-renesas-soc@xxxxxxxxxxxxxxx
---
drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
index 28cd7560e5db..2f5ae69148cc 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
@@ -43,6 +43,7 @@ struct ili9881c_desc {
const struct drm_display_mode *mode;
const unsigned long mode_flags;
u8 default_address_mode;
+ unsigned int lanes;
};
struct ili9881c {
@@ -1549,7 +1550,7 @@ static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
dsi->mode_flags = ctx->desc->mode_flags;
dsi->format = MIPI_DSI_FMT_RGB888;
- dsi->lanes = 4;
+ dsi->lanes = ctx->desc->lanes;
return mipi_dsi_attach(dsi);
}
@@ -1567,6 +1568,7 @@ static const struct ili9881c_desc lhr050h41_desc = {
.init_length = ARRAY_SIZE(lhr050h41_init),
.mode = &lhr050h41_default_mode,
.mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
+ .lanes = 4,
};
static const struct ili9881c_desc k101_im2byl02_desc = {
@@ -1574,6 +1576,7 @@ static const struct ili9881c_desc k101_im2byl02_desc = {
.init_length = ARRAY_SIZE(k101_im2byl02_init),
.mode = &k101_im2byl02_default_mode,
.mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
+ .lanes = 4,
};
static const struct ili9881c_desc kd050hdfia020_desc = {
@@ -1599,6 +1602,7 @@ static const struct ili9881c_desc w552946aba_desc = {
.mode = &w552946aba_default_mode,
.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET,
+ .lanes = 4,
};
static const struct ili9881c_desc am8001280g_desc = {
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
