]> git.hungrycats.org Git - linux/commit
arm64: dts: qcom: qrb2210-rb1: switch I2C2 to i2c-gpio
authorDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Wed, 5 Jun 2024 08:55:56 +0000 (11:55 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 27 Jul 2024 09:36:16 +0000 (11:36 +0200)
commita4a3d414d476b201b7e6f6420fa9ffcb9087baa8
treed0c570cd05a152618040d2027f46be38be2de8eb
parent213aa2a35e949990722ed1106d0d1700d4c6a3df
arm64: dts: qcom: qrb2210-rb1: switch I2C2 to i2c-gpio

commit b7b545ccc08873e107aa24c461b1fdb123dd3761 upstream.

On the Qualcomm RB1 platform the I2C bus connected to the LT9611UXC
bridge under some circumstances can go into a state when all transfers
timeout. This causes both issues with fetching of EDID and with
updating of the bridge's firmware. While we are debugging the issue,
switch corresponding I2C bus to use i2c-gpio driver. While using
i2c-gpio no communication issues are observed.

This patch is asusmed to be a temporary fix, so it is implemented in a
non-intrusive manner to simply reverting it later.

Fixes: 616eda24edd4 ("arm64: dts: qcom: qrb2210-rb1: Set up HDMI")
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Link: https://lore.kernel.org/r/20240605-rb12-i2c2g-pio-v2-1-946f5d6b6948@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/arm64/boot/dts/qcom/qrb2210-rb1.dts