A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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clk: atlas7: fix pll missed divide NR in fraction mode

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PLL VCO frequency is given by Fvco = Fref * 2 * NF / NR
in integer-N mode, or by Fvco = Fref * SSN / NR in Spread
Spectrum (fractional-N) mode. Thus fix the missing part
of NR

Signed-off-by: Guo Zeng <[email protected]>
Signed-off-by: Barry Song <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
This commit is contained in:
Guo Zeng 2015-08-04 14:45:32 +00:00 • committed by Michael Turquette
commit b32a7cc63b
1 changed files with 1 additions and 0 deletions
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1
drivers/clk/sirf/clk-atlas7.c
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@ -358,6 +358,7 @@ static unsigned long pll_clk_recalc_rate(struct clk_hw *hw,
if (regctrl0 & SIRFSOC_ABPLL_CTRL0_SSEN) {
rate = fin;
rate *= 1 << 24;
do_div(rate, nr);
do_div(rate, (256 * ((ssdiv >> ssdepth) << ssdepth)
+ (ssmod << ssdepth)));
} else {