[PATCH] ARM: mioa701: fix frequence speedup code

Sascha Hauer s.hauer at pengutronix.de
Mon Jan 20 10:38:48 EST 2014


Hi Robert,

On Sat, Jan 18, 2014 at 12:48:04PM +0100, Robert Jarzmik wrote:
> As barebox has become the true SPL of mioa701 board (no intermediate
> SPL), a bug was uncovered in the init procedure, where the CPU voltage
> was to be increased by commanding the I2C voltage regulator, while the
> I2C was shut down.
> 
> Fix it by unclock-gating the power I2C bus before using it.
> 
> Signed-off-by: Robert Jarzmik <robert.jarzmik at free.fr>

Applied this series, thanks

Sascha

> ---
>  arch/arm/boards/mioa701/board.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boards/mioa701/board.c b/arch/arm/boards/mioa701/board.c
> index c46b5da..7ee0be0 100644
> --- a/arch/arm/boards/mioa701/board.c
> +++ b/arch/arm/boards/mioa701/board.c
> @@ -266,6 +266,7 @@ static int mioa701_coredevice_init(void)
>  	 * This requires to command the Maxim 1586 to upgrade core voltage to
>  	 * 1.475 V, on the power I2C bus (device 0x14).
>  	 */
> +	CKEN |= CKEN_PWRI2C;
>  	CCCR = CCCR_A | 0x20290;
>  	PCFR = PCFR_GPR_EN | PCFR_FVC | PCFR_DC_EN | PCFR_PI2C_EN | PCFR_OPDE;
>  	PCMD(0) = PCMD_LC | 0x1f;
> -- 
> 1.7.10.4
> 
> 
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