[U-Boot] [PATCH 1/2] ARM: mxs: Enable DCDC converter for battery boot

[Fabio Estevam]

Hi Marek,

On Mon, Oct 28, 2013 at 9:29 AM, Marek Vasut <marex at denx.de> wrote:
> In case the board detected sufficient voltage for battery boot,
> make sure the DCDC converter is ON and the board is not running
> only from linregs, otherwise an instability will be observed.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Fabio Estevam <fabio.estevam at freescale.com>
> ---
>  arch/arm/cpu/arm926ejs/mxs/spl_power_init.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
> index 8ea45be..d25019a 100644
> --- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
> +++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
> @@ -654,6 +654,8 @@ static void mxs_batt_boot(void)
>         clrsetbits_le32(&power_regs->hw_power_5vctrl,
>                 POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK,
>                 0x8 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
> +
> +       mxs_power_enable_4p2();

Shouldn't this be conditional?

#if defined CONFIG_MXS_ENABLE_4P2
mxs_power_enable_4p2();
#endif

Then the boards that need this power supply enable
CONFIG_MXS_ENABLE_4P2 in its config file.

Regards,

Fabio Estevam