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drm/bridge: lt9611: fix sleep mode setup

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[ Upstream commit ae2d329f10 ]

On atomic_post_disable the bridge goes to the low power state. However
the code disables too much of the chip, so the HPD event is not being
detected and delivered to the host. Reduce the power saving in order to
get the HPD event.

Fixes: 23278bf54a ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-2-dmitry.baryshkov@linaro.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Baryshkov 2023-01-18 10:16:46 +02:00 committed by Greg Kroah-Hartman
parent 9e1e236acd
commit 74131c671f
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/bridge/lontium-lt9611.c
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@ -448,12 +448,11 @@ static void lt9611_sleep_setup(struct lt9611 *lt9611)
{ 0x8023, 0x01 },
{ 0x8157, 0x03 }, /* set addr pin as output */
{ 0x8149, 0x0b },
{ 0x8151, 0x30 }, /* disable IRQ */
{ 0x8102, 0x48 }, /* MIPI Rx power down */
{ 0x8123, 0x80 },
{ 0x8130, 0x00 },
{ 0x8100, 0x01 }, /* bandgap power down */
{ 0x8101, 0x00 }, /* system clk power down */
{ 0x8011, 0x0a },
};
regmap_multi_reg_write(lt9611->regmap,