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add i2c clock support 

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Eric Bénard 2012-02-27 09:20:07 +01:00 committed by Sascha Hauer
parent f062e28dc9
commit 64be852b89
1 changed files with 26 additions and 0 deletions
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26
arch/arm/mach-imx/speed-imx53.c
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@ -169,6 +169,31 @@ unsigned long imx_get_fecclk(void)
return imx_get_ipgclk();
}
static unsigned long imx_get_ipg_perclk(void)
{
u32 reg;
reg = ccm_readl(MX5_CCM_CBCDR);
if (!(reg & MX5_CCM_CBCDR_PERIPH_CLK_SEL))
return pll2_sw_get_rate();
reg = ccm_readl(MX5_CCM_CBCMR);
switch ((reg & MX5_CCM_CBCMR_PERIPH_CLK_SEL_MASK) >>
MX5_CCM_CBCMR_PERIPH_CLK_SEL_OFFSET) {
case 0:
return pll1_main_get_rate();
case 1:
return pll3_sw_get_rate();
/* case 2:
TODO : LP_APM */
}
return 0;
}
unsigned long imx_get_i2cclk(void)
{
return imx_get_ipg_perclk();
}
unsigned long imx_get_mmcclk(void)
{
u32 reg, prediv, podf, rate;
@ -201,4 +226,5 @@ void imx_dump_clocks(void)
printf("ipg: %ld\n", imx_get_ipgclk());
printf("fec: %ld\n", imx_get_fecclk());
printf("gpt: %ld\n", imx_get_gptclk());
printf("i2c: %ld\n", imx_get_i2cclk());
}