* [PATCH] drm/bridge: Fix the interrupt clearing error in LT9611
@ 2026-04-24 8:50 Sunyun Yang
2026-04-28 7:43 ` 杨孙运
0 siblings, 1 reply; 2+ messages in thread
From: Sunyun Yang @ 2026-04-24 8:50 UTC (permalink / raw)
To: robh, krzk+dt, conor+dt, andrzej.hajda, neil.armstrong,
dmitry.baryshkov, maarten.lankhorst, rfoss, mripard
Cc: Laurent.pinchart, tzimmermann, jonas, jernej.skrabec, devicetree,
dri-devel, linux-kernel, yangsunyun1993, xmzhu, xmzhu,
Sunyun Yang
Incorrect clearing of the LT9611 interrupt register causes subsequent
interrupts to not be recognized.
Signed-off-by: Sunyun Yang <syyang@lontium.com>
---
drivers/gpu/drm/bridge/lontium-lt9611.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 4517aee83332..f30a2875000f 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -398,6 +398,7 @@ static irqreturn_t lt9611_irq_thread_handler(int irq, void *dev_id)
dev_info(lt9611->dev, "hdmi cable disconnected\n");
regmap_write(lt9611->regmap, 0x8207, 0xbf);
+ regmap_write(lt9611->regmap, 0x8207, 0xff);
regmap_write(lt9611->regmap, 0x8207, 0x3f);
}
@@ -406,6 +407,7 @@ static irqreturn_t lt9611_irq_thread_handler(int irq, void *dev_id)
dev_info(lt9611->dev, "hdmi cable connected\n");
regmap_write(lt9611->regmap, 0x8207, 0x7f);
+ regmap_write(lt9611->regmap, 0x8207, 0xff);
regmap_write(lt9611->regmap, 0x8207, 0x3f);
}
--
2.34.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drm/bridge: Fix the interrupt clearing error in LT9611
2026-04-24 8:50 [PATCH] drm/bridge: Fix the interrupt clearing error in LT9611 Sunyun Yang
@ 2026-04-28 7:43 ` 杨孙运
0 siblings, 0 replies; 2+ messages in thread
From: 杨孙运 @ 2026-04-28 7:43 UTC (permalink / raw)
To: Sunyun Yang
Cc: robh, krzk+dt, conor+dt, andrzej.hajda, neil.armstrong,
dmitry.baryshkov, maarten.lankhorst, rfoss, mripard,
Laurent.pinchart, tzimmermann, jonas, jernej.skrabec, devicetree,
dri-devel, linux-kernel, xmzhu, xmzhu
Sunyun Yang <syyang@lontium.com> 于2026年4月24日周五 16:50写道：
>
> Incorrect clearing of the LT9611 interrupt register causes subsequent
> interrupts to not be recognized.
>
> Signed-off-by: Sunyun Yang <syyang@lontium.com>
> ---
> drivers/gpu/drm/bridge/lontium-lt9611.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
> index 4517aee83332..f30a2875000f 100644
> --- a/drivers/gpu/drm/bridge/lontium-lt9611.c
> +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
> @@ -398,6 +398,7 @@ static irqreturn_t lt9611_irq_thread_handler(int irq, void *dev_id)
> dev_info(lt9611->dev, "hdmi cable disconnected\n");
>
> regmap_write(lt9611->regmap, 0x8207, 0xbf);
> + regmap_write(lt9611->regmap, 0x8207, 0xff);
> regmap_write(lt9611->regmap, 0x8207, 0x3f);
> }
>
> @@ -406,6 +407,7 @@ static irqreturn_t lt9611_irq_thread_handler(int irq, void *dev_id)
> dev_info(lt9611->dev, "hdmi cable connected\n");
>
> regmap_write(lt9611->regmap, 0x8207, 0x7f);
> + regmap_write(lt9611->regmap, 0x8207, 0xff);
> regmap_write(lt9611->regmap, 0x8207, 0x3f);
> }
>
Please check this email.
> --
> 2.34.1
>
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