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

[Lad, Prabhakar]

Hi Christian, 

On Tue, Jun 05, 2012 at 15:38:53, Christian Riesch wrote:
> 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.
> 
  Yes, this patch is not required I'll drop this patch.

Thx,
--Prabhakar Lad

> 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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