[U-Boot] [PATCH] tegra2: Use new GPIO APIs in gpio_config_uart()

[Anatolij Gustschin]

Hi Stephen,

On Thu,  6 Oct 2011 16:52:22 -0600
Stephen Warren <swarren at nvidia.com> wrote:

> ... rather than open-coding the register accesses.
> 
> However, gpio_request() typically stores the "label" parameter in a global
> data structure. This causes problems when called from gpio_config_uart(),
> since the code is running before relocation. To solve this, pass a NULL
> string to gpio_request(), and modify gpio_request() not to touch the string
> if it's NULL.
> 
> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> ---
> I tested this on Seaboard. With the code in the patch below, the UART works.
> If I comment out the body of gpio_config_uart_seaboard(), the UART does not
> work.
> 
> This patch should work with ToT U-Boot, but the context relies on the rename
> of gpio_config_uart() to gpio_config_uart_seaboard() contained in:
> http://patchwork.ozlabs.org/patch/118144/
> 
>  board/nvidia/seaboard/seaboard.c |   18 ++----------------
>  drivers/gpio/tegra2_gpio.c       |    6 ++++--
>  2 files changed, 6 insertions(+), 18 deletions(-)

This patch doesn't apply cleanly. There were a lot of tegra2 patches,
so I'm not sure if it is not superseded by some newer patches. Can you
please check and if the patch is needed, then re-base and resubmit.
Thanks!

Anatolij