[U-Boot] [PATCH v2 1/2] wandboard: Don't use I2C speed Kconfig settings with DM_I2C

[Trent Piepho <tpiepho@impinj.com>]

On Thu, 2019-05-09 at 08:20 +0200, Anatolij Gustschin wrote:
> On Wed, 8 May 2019 23:30:01 +0000
> Trent Piepho tpiepho at impinj.com wrote:
> ...
> > diff --git a/board/wandboard/wandboard.c
> > b/board/wandboard/wandboard.c
> > index 69fbc8b690..9d7a94ff9d 100644
> > --- a/board/wandboard/wandboard.c
> > +++ b/board/wandboard/wandboard.c
> > @@ -46,6 +46,15 @@ DECLARE_GLOBAL_DATA_PTR;
> >  #define ETH_PHY_AR8035_POWER	IMX_GPIO_NR(7, 13)
> >  #define REV_DETECTION		IMX_GPIO_NR(2, 28)
> >  
> > +/* Speed defined in Kconfig is only applicable when not using
> > DM_I2C.  */
> > +#ifdef CONFIG_DM_I2C
> > +#define I2C1_SPEED_NON_DM	0
> > +#define I2C2_SPEED_NON_DM	0
> > +#else
> > +#define I2C1_SPEED_NON_DM	CONFIG_SYS_MXC_I2C1_SPEED
> > +#define I2C2_SPEED_NON_DM	CONFIG_SYS_MXC_I2C2_SPEED
> 
> Shouldn't we change this to
> 
> #ifdef CONFIG_DM_I2C
> #define I2C2_SPEED_NON_DM	0
> #define I2C3_SPEED_NON_DM	0
> #else
> #define I2C2_SPEED_NON_DM	CONFIG_SYS_MXC_I2C2_SPEED
> #define I2C3_SPEED_NON_DM	CONFIG_SYS_MXC_I2C3_SPEED
> #endif
> ...
> setup_i2c(1, I2C2_SPEED_NON_DM, 0x7f, &mx6q_i2c2_pad_info);
> setup_i2c(2, I2C3_SPEED_NON_DM, 0x7f, &mx6q_i2c3_pad_info);
> ?
> 
> Because the first argument to setup_i2c() is the bus number
> which starts counting from 0, but the CONFIG_SYS_MXC_I2C*
> start counting from 1. This doesn't affect the actual
> configuration since the speed value is currently the same
> for all buses. But it is more accurate.

Seems like it should have been, but the existing code uses I2C1_SPEED
and I2C2_SPEED.  Probably a bug.  But if I change it here, then it will
affect existing config files, which were done when the bug existed.

Also I see it calls setup_i2c(1, ...) twice, which seems like another
bug.