This is a note to let you know that I've just added the patch titled
drm/bridge: parade-ps8640: Fix regulator supply order
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-bridge-parade-ps8640-fix-regulator-supply-order.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 142437988f919190ff7dc8a5bcf2bda9ccbbc024
Author: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Date: Thu Jul 21 17:22:58 2022 +0800
drm/bridge: parade-ps8640: Fix regulator supply order
[ Upstream commit fc94224c2e0ae8d83ac511a3ef4962178505469d ]
The datasheet says that VDD12 must be enabled and at full voltage before
VDD33 is enabled.
Reorder the bulk regulator supply names so that VDD12 is enabled before
VDD33. Any enable ramp delays should be handled by setting proper
constraints on the regulators.
Fixes: bc1aee7fc8f0 ("drm/bridge: Add I2C based driver for ps8640 bridge")
Signed-off-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20220721092258.3397461-1-wenst@xxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c
index 52f2ea6fcb26..1367cc2d6fd7 100644
--- a/drivers/gpu/drm/bridge/parade-ps8640.c
+++ b/drivers/gpu/drm/bridge/parade-ps8640.c
@@ -565,8 +565,8 @@ static int ps8640_probe(struct i2c_client *client)
if (IS_ERR(ps_bridge->panel_bridge))
return PTR_ERR(ps_bridge->panel_bridge);
- ps_bridge->supplies[0].supply = "vdd33";
- ps_bridge->supplies[1].supply = "vdd12";
+ ps_bridge->supplies[0].supply = "vdd12";
+ ps_bridge->supplies[1].supply = "vdd33";
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ps_bridge->supplies),
ps_bridge->supplies);
if (ret)
