diff options
| author | Tony Lindgren <tony@atomide.com> | 2010-05-20 11:37:23 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2010-05-20 11:37:23 -0700 |
| commit | f6304f5804f228b6c2fea9e3dfac25c5b2db9b38 (patch) | |
| tree | 362b9b6a3bd32b868e5917a32d448ac75c5854df /arch/arm/plat-s3c24xx/include/plat/pll.h | |
| parent | 4fa73a1bf89ebea4eba8a9982b5f64d266d8b5e9 (diff) | |
| parent | 6daa642d9b8ec762b3c5641cd5e5fa855a5405bf (diff) | |
| download | blackbird-op-linux-f6304f5804f228b6c2fea9e3dfac25c5b2db9b38.tar.gz blackbird-op-linux-f6304f5804f228b6c2fea9e3dfac25c5b2db9b38.zip | |
Merge branch 'omap4-i2c-init' into omap-for-linus
Diffstat (limited to 'arch/arm/plat-s3c24xx/include/plat/pll.h')
| -rw-r--r-- | arch/arm/plat-s3c24xx/include/plat/pll.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c24xx/include/plat/pll.h b/arch/arm/plat-s3c24xx/include/plat/pll.h index 7ea8bffa7a9c..005729a1077a 100644 --- a/arch/arm/plat-s3c24xx/include/plat/pll.h +++ b/arch/arm/plat-s3c24xx/include/plat/pll.h @@ -35,3 +35,28 @@ s3c24xx_get_pll(unsigned int pllval, unsigned int baseclk) return (unsigned int)fvco; } + +#define S3C2416_PLL_M_SHIFT (14) +#define S3C2416_PLL_P_SHIFT (5) +#define S3C2416_PLL_S_MASK (7) +#define S3C2416_PLL_M_MASK ((1 << 10) - 1) +#define S3C2416_PLL_P_MASK (63) + +static inline unsigned int +s3c2416_get_pll(unsigned int pllval, unsigned int baseclk) +{ + unsigned int m, p, s; + uint64_t fvco; + + m = pllval >> S3C2416_PLL_M_SHIFT; + p = pllval >> S3C2416_PLL_P_SHIFT; + + s = pllval & S3C2416_PLL_S_MASK; + m &= S3C2416_PLL_M_MASK; + p &= S3C2416_PLL_P_MASK; + + fvco = (uint64_t)baseclk * m; + do_div(fvco, (p << s)); + + return (unsigned int)fvco; +} |
