]> git.hungrycats.org Git - linux/commit
arm64: dts: qcom: qrb4210-rb2: switch I2C2 to i2c-gpio
authorDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Wed, 5 Jun 2024 08:55:57 +0000 (11:55 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 27 Jul 2024 09:36:17 +0000 (11:36 +0200)
commit92ff9f43277c073d1b23b78796ed4b7685dd135e
tree03ed7dac44236327ce7b221d90bfb8e42b5d2a9b
parenta4a3d414d476b201b7e6f6420fa9ffcb9087baa8
arm64: dts: qcom: qrb4210-rb2: switch I2C2 to i2c-gpio

commit f77e7bd40c3c2d79685e9cc80de874b69a976f55 upstream.

On the Qualcomm RB2 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: f7b01e07e89c ("arm64: dts: qcom: qrb4210-rb2: Enable display out")
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-v2-2-946f5d6b6948@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/arm64/boot/dts/qcom/qrb4210-rb2.dts