[PATCH] Nokia RX-51: Decrease i2c speed to 100000

[Pali Rohár]

On Tuesday 05 January 2021 11:51:20 Lokesh Vutla wrote:
> On 22/11/20 4:00 am, Pali Rohár wrote:
> > It looks like that i2c bus lot of times timeout on some units. Prior
> > migration to CONFIG_DM_I2C i2c speed was set to CONFIG_SYS_OMAP24_I2C_SPEED
> > value which was 100000. Lower speed fixes timeout problems, so change speed
> > back to its previous value.
> > 
> > Signed-off-by: Pali Rohár <pali at kernel.org>
> > Fixes: 8d8c18170325 ("Nokia RX-51: Convert to CONFIG_DM_I2C")
> 
> Applied to u-boot-ti/for-next branch
> 
> Thanks and regards,
> Lokesh
> 
> > ---
> > Please include this patch into U-Boot master branch for 2020.01 release
> > to have i2c bus working.

Could you please include this patch into master branch (and not only
into for-next) as I asked more than month ago? It is fixing i2c bus.

> > ---
> >  board/nokia/rx51/rx51.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/board/nokia/rx51/rx51.c b/board/nokia/rx51/rx51.c
> > index 3d62b5d9ad..2dd41604c9 100644
> > --- a/board/nokia/rx51/rx51.c
> > +++ b/board/nokia/rx51/rx51.c
> > @@ -704,9 +704,9 @@ void board_mmc_power_init(void)
> >  }
> >  
> >  static const struct omap_i2c_platdata rx51_i2c[] = {
> > -	{ I2C_BASE1, 2200000, OMAP_I2C_REV_V1 },
> > +	{ I2C_BASE1, 100000, OMAP_I2C_REV_V1 },
> >  	{ I2C_BASE2, 100000, OMAP_I2C_REV_V1 },
> > -	{ I2C_BASE3, 400000, OMAP_I2C_REV_V1 },
> > +	{ I2C_BASE3, 100000, OMAP_I2C_REV_V1 },
> >  };
> >  
> >  U_BOOT_DEVICES(rx51_i2c) = {
> >