]> git.sur5r.net Git - u-boot/commit
clk: clk_stm32fx: add clock configuration for mmc usage
authorPatrice Chotard <patrice.chotard@st.com>
Wed, 15 Nov 2017 12:14:52 +0000 (13:14 +0100)
committerTom Rini <trini@konsulko.com>
Thu, 30 Nov 2017 03:30:50 +0000 (22:30 -0500)
commit4e97e25723530cc8bf57ca1d0ae17d86895e04c5
tree776fe7bae3a58cde68b6b024427436d41c22dfa1
parent928954fe58e69767b138816ab58e1a7e48f2c685
clk: clk_stm32fx: add clock configuration for mmc usage

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@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
arch/arm/include/asm/arch-stm32f7/stm32.h
drivers/clk/clk_stm32f.c
include/dt-bindings/mfd/stm32f7-rcc.h
include/stm32_rcc.h