[U-Boot] [PATCH] i.MX31: fir imx31_phycore to work after Linux reboot

[Jean-Christophe PLAGNIOL-VILLARD]

maybe fix to fir :)
On 10:03 Fri 06 Feb     , Guennadi Liakhovetski wrote:
> Upon power on i.MX31 enables most peripheral clocks, Linux disables the ones
> that it's not using to save power. Until now U-Boot on imx31_phycore didn't
> enable the I2C clock explicitly, so, after a reboot under Linux, if Linux
> didn't use I2C, the clock would stay disabled. And U-Boot on imx31_phycore
> uses an I2C EEPROM for environment data. So, after a reboot U-Boot would be
> left with its default environment. This patch fixes this problem by enabling
> the I2C clock explicitly.
> 
> Signed-off-by: Guennadi Liakhovetski <lg at denx.de>
> ---
>  board/imx31_phycore/imx31_phycore.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/board/imx31_phycore/imx31_phycore.c b/board/imx31_phycore/imx31_phycore.c
> index 4c64cb9..6b78194 100644
> --- a/board/imx31_phycore/imx31_phycore.c
> +++ b/board/imx31_phycore/imx31_phycore.c
> @@ -60,6 +60,9 @@ int board_init (void)
>  	mx31_gpio_mux(MUX_CSPI2_MOSI__I2C2_SCL);
>  	mx31_gpio_mux(MUX_CSPI2_MISO__I2C2_SDA);
>  
> +	/* start I2C2 clock */
> +	__REG(CCM_CGR0) = __REG(CCM_CGR0) | (3 << 28);
> +
is not better to ahve this in the I2C driver?

Best Regards,
J.