diff options
| author | Fabio Estevam <festevam@gmail.com> | 2012-04-29 08:11:13 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-05-15 08:31:32 +0200 |
| commit | 6a376046ef3b2417cf9fbfbfad300fa6f026c816 (patch) | |
| tree | 8ac91f23143504bddd1390c107e5d1ecf43769e6 /arch/arm/cpu/armv7/imx-common | |
| parent | 28fdbddc943173d5f199fe2de9bc74bc6172940e (diff) | |
imx-common: Factor out get_ahb_clk()
get_ahb_clk() is a common function between mx5 and mx6.
Place it into imx-common directory.
Cc: Dirk Behme <dirk.behme@googlemail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'arch/arm/cpu/armv7/imx-common')
| -rw-r--r-- | arch/arm/cpu/armv7/imx-common/cpu.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/imx-common/cpu.c b/arch/arm/cpu/armv7/imx-common/cpu.c index 3d58d8ae91..b96fa5bdb9 100644 --- a/arch/arm/cpu/armv7/imx-common/cpu.c +++ b/arch/arm/cpu/armv7/imx-common/cpu.c @@ -29,6 +29,7 @@ #include <asm/arch/imx-regs.h> #include <asm/arch/clock.h> #include <asm/arch/sys_proto.h> +#include <asm/arch/crm_regs.h> #ifdef CONFIG_FSL_ESDHC #include <fsl_esdhc.h> @@ -127,3 +128,15 @@ void reset_cpu(ulong addr) { __raw_writew(4, WDOG1_BASE_ADDR); } + +u32 get_ahb_clk(void) +{ + struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + u32 reg, ahb_podf; + + reg = __raw_readl(&imx_ccm->cbcdr); + reg &= MXC_CCM_CBCDR_AHB_PODF_MASK; + ahb_podf = reg >> MXC_CCM_CBCDR_AHB_PODF_OFFSET; + + return get_periph_clk() / (ahb_podf + 1); +} |