[U-Boot] [PATCH] da850/omap-l138: enable SPI flash in RMII mode

[Christian Riesch]

Hi,

On Fri, Jun 1, 2012 at 3:48 PM, Prabhakar Lad <prabhakar.lad at ti.com> wrote:
> From: Rajashekhara, Sudhakar <sudhakar.raj at ti.com>
>
> According to DA850/OMAP-L138 schematics, GP2[6] line has to be driven
> high for RMII mode to work. In RMII mode, SPI flash becomes un-usable.
> But during testing it was found out that, driving GP2[6] low also
> enables RMII and in this configuration SPI flash is also accessible.

How about just removing all the code that is related to GP2[6]?
There's a pull-down resistor on the board and the pin is high
impedance by default.

Regards, Christian

>
> Signed-off-by: Rajashekhara, Sudhakar <sudhakar.raj at ti.com>
> Signed-off-by: Lad, Prabhakar <prabhakar.lad at ti.com>
> Signed-off-by: Hadli, Manjunath <manjunath.hadli at ti.com>
> ---
>  board/davinci/da8xxevm/da850evm.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
> index 004d5ad..82d707f 100644
> --- a/board/davinci/da8xxevm/da850evm.c
> +++ b/board/davinci/da8xxevm/da850evm.c
> @@ -438,10 +438,10 @@ int rmii_hw_init(void)
>                                CONFIG_SYS_I2C_EXPANDER_ADDR);
>        }
>
> -       /* Set the output as high */
> -       temp = REG(GPIO_BANK2_REG_SET_ADDR);
> +       /* Set the output as low */
> +       temp = REG(GPIO_BANK2_REG_CLR_ADDR);
>        temp |= (0x01 << 6);
> -       REG(GPIO_BANK2_REG_SET_ADDR) = temp;
> +       REG(GPIO_BANK2_REG_CLR_ADDR) = temp;
>
>        /* Set the GPIO direction as output */
>        temp = REG(GPIO_BANK2_REG_DIR_ADDR);
> --
> 1.7.4.1
>
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