linux-kernel - RE: [PATCH v13] drm/bridge: it6505: fix hibernate to resume no display issue

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Date: Thu, 23 May 2024 02:20:10 +0000
From: <kuro.chung@....com.tw>
To: <rfoss@...nel.org>, <mripard@...nel.org>, <tzimmermann@...e.de>,
        <jonas@...boo.se>, <daniel@...ll.ch>,
        <angelogioacchino.delregno@...labora.com>, <allen.chen@....com.tw>,
        <neil.armstrong@...aro.org>, <Laurent.pinchart@...asonboard.com>,
        <maarten.lankhorst@...ux.intel.com>, <airlied@...il.com>,
        <Kenneth.Hung@....com.tw>, <dri-devel@...ts.freedesktop.org>,
        <treapking@...omium.org>, <andrzej.hajda@...el.com>,
        <jernej.skrabec@...il.com>, <linux-kernel@...r.kernel.org>,
        <Hermes.Wu@....com.tw>
Subject: RE: [PATCH v13] drm/bridge: it6505: fix hibernate to resume no
 display issue



-----Original Message-----
From: Robert Foss <rfoss@...nel.org> 
Sent: Wednesday, May 22, 2024 8:13 PM
To: Maxime Ripard <mripard@...nel.org>; Thomas Zimmermann <tzimmermann@...e.de>; Jonas Karlman <jonas@...boo.se>; Daniel Vetter <daniel@...ll.ch>; AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>; Allen Chen <allen.chen@....com.tw>; Neil Armstrong <neil.armstrong@...aro.org>; Laurent Pinchart <Laurent.pinchart@...asonboard.com>; Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>; David Airlie <airlied@...il.com>; Kuro Chung (鐘仕廷) <kuro.chung@....com.tw>; Kenneth Hung (洪家倫) <Kenneth.Hung@....com.tw>; open list:DRM DRIVERS <dri-devel@...ts.freedesktop.org>; Pin-yen Lin <treapking@...omium.org>; Andrzej Hajda <andrzej.hajda@...el.com>; Jernej Skrabec <jernej.skrabec@...il.com>; open list <linux-kernel@...r.kernel.org>; Hermes Wu (吳佳宏) <Hermes.Wu@....com.tw>
Subject: Re: [PATCH v13] drm/bridge: it6505: fix hibernate to resume no display issue

On Wed, 22 May 2024 14:55:28 +0800, kuro wrote:
> From: Kuro Chung <kuro.chung@....com.tw>
> 
> When the system power resumes, the TTL input of IT6505 may experience 
> some noise before the video signal stabilizes, necessitating a video 
> reset. This patch is implemented to prevent a loop of video error 
> interrupts, which can occur when a video reset in the video FIFO error 
> interrupt triggers another such interrupt. The patch processes the 
> SCDT and FIFO error interrupts simultaneously and ignores any video 
> FIFO error interrupts caused by a video reset.
> 
> [...]

Applied, thanks!
> thanks everyone for your help!, I really appreciate it.

[1/1] drm/bridge: it6505: fix hibernate to resume no display issue
      https://cgit.freedesktop.org/drm/drm-misc/commit/?id=484436ec5c2b



Rob