[7/7] clk: atlas7: fix pll missed divide NR in fraction mode

Commit Message

Barry Song July 28, 2015, 6:27 a.m. UTC

From: Guo Zeng <[e-mail]>

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 <[e-mail]>
Signed-off-by: Barry Song <[e-mail]>
---
 drivers/clk/sirf/clk-atlas7.c | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/drivers/clk/sirf/clk-atlas7.c b/drivers/clk/sirf/clk-atlas7.c
index 4fc33da..19f417c 100644
--- a/drivers/clk/sirf/clk-atlas7.c
+++ b/drivers/clk/sirf/clk-atlas7.c
@@ -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 {