[U-Boot] [PATCH] mxs: Do not disable bo detection when DC-DC is already enabled

[Stefano Babic]

On 21/05/2015 13:20, Stefan Wahren wrote:
> In case the DC-DC is already enabled mxs_enable_4p2_dcdc_input() returns
> without reenabling brown out detection. So fix this issue by
> moving the return before brown out deactivation.
> 
> Signed-off-by: Stefan Wahren <stefan.wahren at i2se.com>
> ---
>  arch/arm/cpu/arm926ejs/mxs/spl_power_init.c |   10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
> index c342217..42f3df2 100644
> --- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
> +++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
> @@ -332,6 +332,11 @@ static void mxs_enable_4p2_dcdc_input(int xfer)
>  
>  	debug("SPL: %s 4P2 DC-DC Input\n", xfer ? "Enabling" : "Disabling");
>  
> +	if (xfer && (readl(&power_regs->hw_power_5vctrl) &
> +			POWER_5VCTRL_ENABLE_DCDC)) {
> +		return;
> +	}
> +
>  	prev_5v_brnout = readl(&power_regs->hw_power_5vctrl) &
>  				POWER_5VCTRL_PWDN_5VBRNOUT;
>  	prev_5v_droop = readl(&power_regs->hw_power_ctrl) &
> @@ -343,11 +348,6 @@ static void mxs_enable_4p2_dcdc_input(int xfer)
>  
>  	clrbits_le32(&power_regs->hw_power_ctrl, POWER_CTRL_ENIRQ_VDD5V_DROOP);
>  
> -	if (xfer && (readl(&power_regs->hw_power_5vctrl) &
> -			POWER_5VCTRL_ENABLE_DCDC)) {
> -		return;
> -	}
> -
>  	/*
>  	 * Recording orignal values that will be modified temporarlily
>  	 * to handle a chip bug. See chip errata for CQ ENGR00115837
> 

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================