Add dt-binding documentation of DSI for MediaTek MT8188 SoC.
Because of the difference between SOC and DSI cmd packet control, for
MT8188, it is necessary to increase the DSI_CMDQ_SIZE control when
sending long packets to initialize the panel. Of course, this will not
affect the sending of short packets.
Base on the branch of linus/master v6.4.
Shuijing Li (3):
dt-bindings: display: mediatek: dsi: Add compatible for MediaTek
MT8188
drm/mediatek: Add mt8188 dsi compatible to mtk_dsi.c
drm/mediatek: dsi: Add dsi cmdq_ctl to send panel initial code
.../bindings/display/mediatek/mediatek,dsi.yaml | 1 +
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 ++
drivers/gpu/drm/mediatek/mtk_dsi.c | 15 +++++++++++++++
3 files changed, 18 insertions(+)
--
2.40.1
Add the compatible because there are different definitions for cmdq
register bit control in mt8188.
Signed-off-by: Shuijing Li <[email protected]>
Signed-off-by: Jitao Shi <[email protected]>
Reviewed-by: Matthias Brugger <[email protected]>
---
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 ++
drivers/gpu/drm/mediatek/mtk_dsi.c | 8 ++++++++
2 files changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 6dcb4ba2466c..0070894d0148 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -764,6 +764,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
.data = (void *)MTK_DSI },
{ .compatible = "mediatek,mt8186-dsi",
.data = (void *)MTK_DSI },
+ { .compatible = "mediatek,mt8188-dsi",
+ .data = (void *)MTK_DSI },
{ }
};
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 7d5250351193..500a3054282d 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -1208,6 +1208,12 @@ static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
.has_size_ctl = true,
};
+static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
+ .reg_cmdq_off = 0xd00,
+ .has_shadow_ctl = true,
+ .has_size_ctl = true,
+};
+
static const struct of_device_id mtk_dsi_of_match[] = {
{ .compatible = "mediatek,mt2701-dsi",
.data = &mt2701_dsi_driver_data },
@@ -1217,6 +1223,8 @@ static const struct of_device_id mtk_dsi_of_match[] = {
.data = &mt8183_dsi_driver_data },
{ .compatible = "mediatek,mt8186-dsi",
.data = &mt8186_dsi_driver_data },
+ { .compatible = "mediatek,mt8188-dsi",
+ .data = &mt8188_dsi_driver_data },
{ },
};
MODULE_DEVICE_TABLE(of, mtk_dsi_of_match);
--
2.40.1
Add dt-binding documentation of dsi for MediaTek MT8188 SoC.
Signed-off-by: Shuijing Li <[email protected]>
Signed-off-by: Jitao Shi <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Matthias Brugger <[email protected]>
---
.../devicetree/bindings/display/mediatek/mediatek,dsi.yaml | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
index 4707b60238b0..13fa76299254 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
@@ -29,6 +29,7 @@ properties:
- mediatek,mt8173-dsi
- mediatek,mt8183-dsi
- mediatek,mt8186-dsi
+ - mediatek,mt8188-dsi
reg:
maxItems: 1
--
2.40.1
For mt8188, add dsi cmdq reg control to send long packets to panel
initialization.
Signed-off-by: Shuijing Li <[email protected]>
Signed-off-by: Jitao Shi <[email protected]>
---
Changes in v2:
use mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL); directly,
per suggestion from the previous thread:
https://lore.kernel.org/lkml/[email protected]/
---
drivers/gpu/drm/mediatek/mtk_dsi.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 500a3054282d..8b43d9f48178 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -86,6 +86,7 @@
#define DSI_CMDQ_SIZE 0x60
#define CMDQ_SIZE 0x3f
+#define CMDQ_SIZE_SEL BIT(15)
#define DSI_HSTX_CKL_WC 0x64
@@ -178,6 +179,7 @@ struct mtk_dsi_driver_data {
const u32 reg_cmdq_off;
bool has_shadow_ctl;
bool has_size_ctl;
+ bool cmdq_long_packet_ctl;
};
struct mtk_dsi {
@@ -996,6 +998,8 @@ static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct mipi_dsi_msg *msg)
mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val);
mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size);
+ if (dsi->driver_data->cmdq_long_packet_ctl)
+ mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL);
}
static ssize_t mtk_dsi_host_send_cmd(struct mtk_dsi *dsi,
@@ -1200,18 +1204,21 @@ static const struct mtk_dsi_driver_data mt8183_dsi_driver_data = {
.reg_cmdq_off = 0x200,
.has_shadow_ctl = true,
.has_size_ctl = true,
+ .cmdq_long_packet_ctl = false,
};
static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
.reg_cmdq_off = 0xd00,
.has_shadow_ctl = true,
.has_size_ctl = true,
+ .cmdq_long_packet_ctl = false,
};
static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
.reg_cmdq_off = 0xd00,
.has_shadow_ctl = true,
.has_size_ctl = true,
+ .cmdq_long_packet_ctl = true,
};
static const struct of_device_id mtk_dsi_of_match[] = {
--
2.40.1
On 16/06/2023 09:36, Shuijing Li wrote:
> For mt8188, add dsi cmdq reg control to send long packets to panel
> initialization.
>
> Signed-off-by: Shuijing Li <[email protected]>
> Signed-off-by: Jitao Shi <[email protected]>
Reviewed-by: Matthias Brugger <[email protected]>
> ---
> Changes in v2:
> use mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL); directly,
> per suggestion from the previous thread:
> https://lore.kernel.org/lkml/[email protected]/
> ---
> drivers/gpu/drm/mediatek/mtk_dsi.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index 500a3054282d..8b43d9f48178 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -86,6 +86,7 @@
>
> #define DSI_CMDQ_SIZE 0x60
> #define CMDQ_SIZE 0x3f
> +#define CMDQ_SIZE_SEL BIT(15)
>
> #define DSI_HSTX_CKL_WC 0x64
>
> @@ -178,6 +179,7 @@ struct mtk_dsi_driver_data {
> const u32 reg_cmdq_off;
> bool has_shadow_ctl;
> bool has_size_ctl;
> + bool cmdq_long_packet_ctl;
> };
>
> struct mtk_dsi {
> @@ -996,6 +998,8 @@ static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct mipi_dsi_msg *msg)
>
> mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val);
> mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size);
> + if (dsi->driver_data->cmdq_long_packet_ctl)
> + mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL);
> }
>
> static ssize_t mtk_dsi_host_send_cmd(struct mtk_dsi *dsi,
> @@ -1200,18 +1204,21 @@ static const struct mtk_dsi_driver_data mt8183_dsi_driver_data = {
> .reg_cmdq_off = 0x200,
> .has_shadow_ctl = true,
> .has_size_ctl = true,
> + .cmdq_long_packet_ctl = false,
> };
>
> static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
> .reg_cmdq_off = 0xd00,
> .has_shadow_ctl = true,
> .has_size_ctl = true,
> + .cmdq_long_packet_ctl = false,
> };
>
> static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
> .reg_cmdq_off = 0xd00,
> .has_shadow_ctl = true,
> .has_size_ctl = true,
> + .cmdq_long_packet_ctl = true,
> };
>
> static const struct of_device_id mtk_dsi_of_match[] = {