From: Guo Zeng <guo.zeng@csr.com>
Date: Tue, 4 Aug 2015 14:45:32 +0000 (+0000)
Subject: clk: atlas7: fix pll missed divide NR in fraction mode
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b32a7cc63bee7bffbd61f88b157b78a9b2101de0;p=openwrt%2Fstaging%2Fblogic.git

clk: atlas7: fix pll missed divide NR in fraction mode

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 <guo.zeng@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---

diff --git a/drivers/clk/sirf/clk-atlas7.c b/drivers/clk/sirf/clk-atlas7.c
index 2ce2653e5630..a98e21fe773a 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 {