On Wed Mar 25 13:57:42 2026 +0300, Dmitry Osipenko wrote:
> Increase time of holding HPD lane low by 50ms. This fixes EDID change not
> detected by source/display side.
>
> Fixes: 7b59b132ad43 ("media: platform: synopsys: Add support for HDMI input
> driver")
> Cc: [email protected]
> Reported-by: Ross Cawston <[email protected]>
> Closes:
> https://lore.kernel.org/linux-rockchip/[email protected]/
> Signed-off-by: Dmitry Osipenko <[email protected]>
> Signed-off-by: Hans Verkuil <[email protected]>
Patch committed.
Thanks,
Hans Verkuil
drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c
b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c
index 61ad20b18b8d..4c8957505a50 100644
--- a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c
+++ b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c
@@ -506,9 +506,9 @@ static void hdmirx_hpd_ctrl(struct snps_hdmirx_dev
*hdmirx_dev, bool en)
hdmirx_writel(hdmirx_dev, CORE_CONFIG,
hdmirx_dev->hpd_trigger_level_high ? en : !en);
- /* 100ms delay as per HDMI spec */
+ /* 100ms delay as per HDMI spec + extra 50ms to cover internal delay */
if (!en)
- msleep(100);
+ msleep(100 + 50);
}
static void hdmirx_write_edid_data(struct snps_hdmirx_dev *hdmirx_dev,
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