[U-Boot] [PATCH 1/3] i2c: tegra: use repeated start for reads

[Yen Lin]

Hi Stephen,

> Subject: [U-Boot] [PATCH 1/3] i2c: tegra: use repeated start for reads
> 
> From: Stephen Warren <swarren at 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 at nvidia.com>

This patch looks good to me.

Reviewed-by: Yen Lin <yelin at nvidia.com>

Regards,
Yen Lin
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