Hi, Xinlei:
On Thu, 2022-01-27 at 19:42 +0800, xinlei.lee@mediatek.com wrote:
From: xinlei lee xinlei.lee@mediatek.com
The order of probe function for bridge drivers and dsi drivers is uncertain. To avoid the dsi probe cannot be executed, we place getting bridge node function in mtk_dsi_bind.
It seems this patch want to fix the same problem as [1]. Does [1] fix your problem? If so, let's ignore this patch.
[1] https://patchwork.kernel.org/project/linux-mediatek/patch/20220127143623.123...
Regards, CK
Signed-off-by:Xinlei Lee xinlei.lee@mediatek.com
drivers/gpu/drm/mediatek/mtk_dsi.c | 29 +++++++++++++++-------------
1 file changed, 15 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 62af60d..a390f26 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -991,6 +991,21 @@ static int mtk_dsi_bind(struct device *dev, struct device *master, void *data) int ret; struct drm_device *drm = data; struct mtk_dsi *dsi = dev_get_drvdata(dev);
- struct drm_panel *panel;
- ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
&panel, &dsi->next_bridge);- if (ret)
return ret;- if (panel) {
dsi->next_bridge = devm_drm_panel_bridge_add(dev,panel);
if (IS_ERR(dsi->next_bridge)) {ret = PTR_ERR(dsi->next_bridge);dev_err(dev, "failed to add bridge: %d\n",ret);
return ret;}}
ret = mtk_dsi_encoder_init(drm, dsi); if (ret)
@@ -1016,7 +1031,6 @@ static int mtk_dsi_probe(struct platform_device *pdev) { struct mtk_dsi *dsi; struct device *dev = &pdev->dev;
- struct drm_panel *panel; struct resource *regs; int irq_num; int ret;
@@ -1033,19 +1047,6 @@ static int mtk_dsi_probe(struct platform_device *pdev) return ret; }
- ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
&panel, &dsi->next_bridge);- if (ret)
goto err_unregister_host;- if (panel) {
dsi->next_bridge = devm_drm_panel_bridge_add(dev,panel);
if (IS_ERR(dsi->next_bridge)) {ret = PTR_ERR(dsi->next_bridge);goto err_unregister_host;}}
dsi->driver_data = of_device_get_match_data(dev);
dsi->engine_clk = devm_clk_get(dev, "engine");