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drm/bridge: parade-ps8640: Fix regulator supply order

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[ Upstream commit fc94224c2e ]

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: bc1aee7fc8 ("drm/bridge: Add I2C based driver for ps8640 bridge")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220721092258.3397461-1-wenst@chromium.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chen-Yu Tsai
2022-07-21 17:22:58 +08:00
committed by Greg Kroah-Hartman
parent 45120fa5e5
commit 3f5889fd65
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/bridge/parade-ps8640.c
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@@ -333,8 +333,8 @@ 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)