[U-Boot] [PATCH] i.MX28: bug fixes in PMU configuration code

[Marek Vasut]

Dear Stathis Voukelatos,

> Fixed some typos in the i.MX28 PMU code that sets up the VDDD
> and VDDIO power rails. In addition the VDDD and VDDIO brownout
> offset values should be divided by a step size before being
> programmed to the corresponding registers.
> 
> Signed-off-by: Stathis Voukelatos <stathis.voukelatos at linn.co.uk>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Marek Vasut <marek.vasut at gmail.com>

All right, yet another minus point for my responsiveness :-(

Tested-by: Marek Vasut <marex at denx.de>
Acked-by: Marek Vasut <marex at denx.de>

Fabio, can you give it a quick spin on mx28evk so we can roll this late into 
this release maybe ?

> ---
>  arch/arm/cpu/arm926ejs/mx28/spl_power_init.c |   12 ++++++------
>  1 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
> b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c index 4b09b0c..cc71af8
> 100644
> --- a/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
> +++ b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
> @@ -716,7 +716,7 @@ int mx28_get_vddio_power_source_off(void)
>                 tmp = readl(&power_regs->hw_power_vddioctrl);
>                 if (tmp & POWER_VDDIOCTRL_DISABLE_FET) {
>                         if ((tmp & POWER_VDDIOCTRL_LINREG_OFFSET_MASK) ==
> -                               POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) {
> +                               POWER_VDDIOCTRL_LINREG_OFFSET_0STEPS) {
>                                 return 1;
>                         }
>                 }
> @@ -724,7 +724,7 @@ int mx28_get_vddio_power_source_off(void)
>                 if (!(readl(&power_regs->hw_power_5vctrl) &
>                         POWER_5VCTRL_ENABLE_DCDC)) {
>                         if ((tmp & POWER_VDDIOCTRL_LINREG_OFFSET_MASK) ==
> -                               POWER_VDDDCTRL_LINREG_OFFSET_0STEPS) {
> +                               POWER_VDDIOCTRL_LINREG_OFFSET_0STEPS) {
>                                 return 1;
>                         }
>                 }
> @@ -772,7 +772,7 @@ void mx28_power_set_vddio(uint32_t new_target, uint32_t
> new_brownout) uint32_t cur_target, diff, bo_int = 0;
>         uint32_t powered_by_linreg = 0;
> 
> -       new_brownout = new_target - new_brownout;
> +       new_brownout = (new_target - new_brownout + 25) / 50;
> 
>         cur_target = readl(&power_regs->hw_power_vddioctrl);
>         cur_target &= POWER_VDDIOCTRL_TRG_MASK;
> @@ -858,8 +858,8 @@ void mx28_power_set_vddio(uint32_t new_target, uint32_t
> new_brownout) }
> 
>         clrsetbits_le32(&power_regs->hw_power_vddioctrl,
> -                       POWER_VDDDCTRL_BO_OFFSET_MASK,
> -                       new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET);
> +                       POWER_VDDIOCTRL_BO_OFFSET_MASK,
> +                       new_brownout << POWER_VDDIOCTRL_BO_OFFSET_OFFSET);
>  }
> 
>  void mx28_power_set_vddd(uint32_t new_target, uint32_t new_brownout)
> @@ -869,7 +869,7 @@ void mx28_power_set_vddd(uint32_t new_target, uint32_t
> new_brownout) uint32_t cur_target, diff, bo_int = 0;
>         uint32_t powered_by_linreg = 0;
> 
> -       new_brownout = new_target - new_brownout;
> +       new_brownout = (new_target - new_brownout + 12) / 25;
> 
>         cur_target = readl(&power_regs->hw_power_vdddctrl);
>         cur_target &= POWER_VDDDCTRL_TRG_MASK;

Best regards,
Marek Vasut