[U-Boot] [U-Boot, 10/11] clk: clk_stm32fx: add clock configuration for mmc usage

[Tom Rini]

On Wed, Nov 15, 2017 at 01:14:52PM +0100, patrice.chotard at st.com wrote:

> From: Patrice Chotard <patrice.chotard at st.com>
> 
> MMC block needs 48Mhz source clock, for that we choose
> to select the SAI PLL.
> Update also stm32_clock_get_rate() to retrieve the MMC
> clock source needed in MMC driver.
> 
> STM32F4 uses a different RCC variant than STM32F7. For STM32F4
> sdmmc clocks bit are located into dckcfgr register whereas there
> are located into dckcfgr2 registers on STM32F7.
> In both registers, bits CK48MSEL and SDMMC1SEL are located at
> the same position.
> 
> Signed-off-by: Christophe Priouzeau <christophe.priouzeau at st.com>
> Signed-off-by: Patrice Chotard <patrice.chotard at st.com>
> Reviewed-by: Vikas Manocha <vikas.manocha at st.com>

Applied to u-boot/master, thanks!

-- 
Tom
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