After rework of code by commit:
commit d95279685bb9690a6973226a3bd8a3bae65c2ad7 Author: Akshay Saraswat akshay.s@samsung.com Date: Wed Feb 4 16:00:03 2015 +0530
function get_mmc_clk() always returns -1 for Exynos 4.
This was caused by omitting, that SDHCI driver for Exynos 4, calls get_mmc_clk(), with mmc device number as argument, instead of pinmux peripheral id, like DW MMC driver for Exynos 5.
By this commit, the code directly calls a proper function to get mmc clock for Exynos 4, without checking the peripheral id.
Signed-off-by: Przemyslaw Marczak p.marczak@samsung.com --- arch/arm/mach-exynos/clock.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-exynos/clock.c b/arch/arm/mach-exynos/clock.c index 1c6baa1..18eadf5 100644 --- a/arch/arm/mach-exynos/clock.c +++ b/arch/arm/mach-exynos/clock.c @@ -1661,6 +1661,9 @@ unsigned long get_mmc_clk(int dev_index) { enum periph_id id;
+ if (cpu_is_exynos4()) + return exynos4_get_mmc_clk(dev_index); + switch (dev_index) { case 0: id = PERIPH_ID_SDMMC0; @@ -1679,12 +1682,7 @@ unsigned long get_mmc_clk(int dev_index) return -1; }
- if (cpu_is_exynos5()) - return clock_get_periph_rate(id); - else if (cpu_is_exynos4()) - return exynos4_get_mmc_clk(dev_index); - - return 0; + return clock_get_periph_rate(id); }
void set_mmc_clk(int dev_index, unsigned int div)