[PATCH v2 08/16] drm: renesas: rz-du: Add RZ/G3L (R9A08G046) DU support

From: Biju

Date: Wed Jul 29 2026 - 09:16:47 EST


From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>

Add Display Unit support for the Renesas RZ/G3L SoC (R9A08G046). It is
similar to the one found on RZ/G2L, but has LVDS support.

Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
v1->v2:
* Dropped the macro RZG2L_DU_FEATURE_SMUX2_DSI_CLK and RZG2L_DU_MAX_LVDS.
* Dropped the variable rcdu from struct rzg2l_du_encoder.
* Dropped the variable lvds from struct rzg2l_du_device.
---
drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c | 22 +++++++++++++++++++-
drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h | 1 +
2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c
index 3d13f61d3c97..a8d841421a0b 100644
--- a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c
+++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c
@@ -55,6 +55,24 @@ static const struct rzg2l_du_device_info rzg2l_du_r9a07g044_info = {
.mode_clock_max = 83500,
};

+static const struct rzg2l_du_device_info rzg2l_du_r9a08g046_info = {
+ .channels_mask = BIT(0),
+ .routes = {
+ [RZG2L_DU_OUTPUT_DSI0] = {
+ .possible_outputs = BIT(0),
+ .port = 0,
+ },
+ [RZG2L_DU_OUTPUT_DPAD0] = {
+ .possible_outputs = BIT(0),
+ .port = 1,
+ },
+ [RZG2L_DU_OUTPUT_LVDS0] = {
+ .possible_outputs = BIT(0),
+ .port = 2,
+ },
+ },
+};
+
static const struct rzg2l_du_device_info rzg2l_du_r9a09g057_info = {
.channels_mask = BIT(0),
.routes = {
@@ -81,6 +99,7 @@ static const struct rzg2l_du_device_info rzg2l_du_r9a09g077_info = {
static const struct of_device_id rzg2l_du_of_table[] = {
{ .compatible = "renesas,r9a07g043u-du", .data = &rzg2l_du_r9a07g043u_info },
{ .compatible = "renesas,r9a07g044-du", .data = &rzg2l_du_r9a07g044_info },
+ { .compatible = "renesas,r9a08g046-du", .data = &rzg2l_du_r9a08g046_info },
{ .compatible = "renesas,r9a09g057-du", .data = &rzg2l_du_r9a09g057_info },
{ .compatible = "renesas,r9a09g077-du", .data = &rzg2l_du_r9a09g077_info },
{ /* sentinel */ }
@@ -92,7 +111,8 @@ const char *rzg2l_du_output_name(enum rzg2l_du_output output)
{
static const char * const names[] = {
[RZG2L_DU_OUTPUT_DSI0] = "DSI0",
- [RZG2L_DU_OUTPUT_DPAD0] = "DPAD0"
+ [RZG2L_DU_OUTPUT_DPAD0] = "DPAD0",
+ [RZG2L_DU_OUTPUT_LVDS0] = "LVDS0"
};

if (output >= ARRAY_SIZE(names))
diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h
index baf076d69cda..7812f36edbe0 100644
--- a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h
+++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h
@@ -25,6 +25,7 @@ struct drm_property;
enum rzg2l_du_output {
RZG2L_DU_OUTPUT_DSI0,
RZG2L_DU_OUTPUT_DPAD0,
+ RZG2L_DU_OUTPUT_LVDS0,
RZG2L_DU_OUTPUT_MAX,
};

--
2.43.0