linux-kernel - [PATCH v3 0/4] Fix Rockchip MIPI DSI display init timeouts

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Date:   Tue, 28 Sep 2021 14:35:48 -0700
From:   Brian Norris <briannorris@...omium.org>
To:     Heiko Stübner <heiko@...ech.de>
Cc:     linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-rockchip@...ts.infradead.org,
        Sandy Huang <hjc@...k-chips.com>,
        Chen-Yu Tsai <wenst@...omium.org>,
        Thomas Hebb <tommyhebb@...il.com>,
        Brian Norris <briannorris@...omium.org>,
        aleksandr.o.makarov@...il.com
Subject: [PATCH v3 0/4] Fix Rockchip MIPI DSI display init timeouts

The Rockchip DSI driver has had a number of bugs over time and has
usually only worked by chance. A number of users have noticed that
things regressed with commit 43c2de1002d2 ("drm/rockchip: dsi: move all
lane config except LCDC mux to bind()"), although it was fixing several
real issues of its own that had been present forever in the upstream
driver (but notably, not in the downstream/BSP driver).

Patch 1 and 2 are the most important fixes here. See their description
for more info.

While I'm at it, fix a few error handling and cleanup issues too.

Changes in v3:
 - New patch, to fix related PM issue discovered after patch 1

Changes in v2:
- Clean up pm-runtime state in error cases.
- Correct git hash for Fixes.

Brian Norris (4):
  drm/rockchip: dsi: Hold pm-runtime across bind/unbind
  drm/rockchip: dsi: Reconfigure hardware on resume()
  drm/rockchip: dsi: Fix unbalanced clock on probe error
  drm/rockchip: dsi: Disable PLL clock on bind error

 .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c   | 82 +++++++++++++------
 1 file changed, 59 insertions(+), 23 deletions(-)

-- 
2.33.0.685.g46640cef36-goog