Hotplug detection fixup on Rockchip DW HDMI QP

[PATCH 0/2] Hotplug detection fixup on Rockchip DW HDMI QP

Posted by Cristian Ciocaltea 3 weeks, 2 days ago

The threaded interrupt handler on RK3576 responsible for providing the
HDMI HPD capability is currently unreliable, since it's affected by a
bug leading to a broken hotplug detection in some cases.

RK3588 is affected by a similar implementation deficiency, however it
doesn't seem to cause any functional breakage.

The series aims to fix the RK3576 HPD issue and optimize HPD handling on
RK3588.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
Cristian Ciocaltea (2):
      drm/rockchip: dw_hdmi_qp: Fix RK3576 HPD interrupt handling
      drm/rockchip: dw_hdmi_qp: Optimize RK3588 HPD interrupt handling

 drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)
---
base-commit: 9b7977f9e39b7768c70c2aa497f04e7569fd3e00
change-id: 20260115-dw-hdmi-qp-hpd-142881a8d81a

Re: [PATCH 0/2] Hotplug detection fixup on Rockchip DW HDMI QP

Posted by Heiko Stuebner 2 weeks, 4 days ago

On Thu, 15 Jan 2026 18:24:42 +0200, Cristian Ciocaltea wrote:
> The threaded interrupt handler on RK3576 responsible for providing the
> HDMI HPD capability is currently unreliable, since it's affected by a
> bug leading to a broken hotplug detection in some cases.
> 
> RK3588 is affected by a similar implementation deficiency, however it
> doesn't seem to cause any functional breakage.
> 
> [...]

Applied, thanks!

[1/2] drm/rockchip: dw_hdmi_qp: Fix RK3576 HPD interrupt handling
      commit: 5f7be8afc40c5ccf1be0410514703e50a49532c0
[2/2] drm/rockchip: dw_hdmi_qp: Optimize RK3588 HPD interrupt handling
      commit: aa156ad92523b21b12bfa5bb261d6affb4b1597f

Best regards,
-- 
Heiko Stuebner <heiko@sntech.de>