Hi Stephen,
Subject: [U-Boot] [PATCH 1/3] i2c: tegra: use repeated start for reads
From: Stephen Warren swarren@nvidia.com
I2C read transactions are typically implemented as follows:
START(write) address REPEATED_START(read) data... STOP
However, Tegra's I2C driver currently implements reads as follows:
START(write) address STOP START(read) data... STOP
This sequence confuses at least the AS3722 PMIC on the Jetson TK1 board, leading to corrupted read data in some cases. Fix the driver to chain the transactions together using repeated starts to solve this.
Signed-off-by: Stephen Warren swarren@nvidia.com
This patch looks good to me.
Reviewed-by: Yen Lin yelin@nvidia.com
Regards, Yen Lin ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -----------------------------------------------------------------------------------