u-boot-brain/arch/arm
Stephen Warren 68049a082b i2c: tegra: use repeated start for reads
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>
Reviewed-by: Yen Lin <yelin@nvidia.com>
2014-07-03 06:29:19 +02:00
..
cpu Merge remote-tracking branch 'u-boot-samsung/master' 2014-07-01 20:52:51 +02:00
dts Merge remote-tracking branch 'u-boot-samsung/master' 2014-07-01 20:52:51 +02:00
imx-common Merge branch 'u-boot-imx/master' into 'u-boot-arm/master' 2014-06-30 23:00:34 +02:00
include/asm i2c: tegra: use repeated start for reads 2014-07-03 06:29:19 +02:00
lib Merge branch 'u-boot/master' into 'u-boot-arm/master' 2014-06-25 10:39:58 +02:00
config.mk build:arm: Remove setting of CROSS_COMPILE environment variable 2014-04-07 20:04:36 +02:00