clk: Loongson1: Make use of GENMASK

Make use of GENMASK instead of open coding the equivalent operation,
and update the PLL formula.

Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Kelvin Cheung 2016-09-19 12:38:56 +08:00 committed by Stephen Boyd
parent c99c7a9ac6
commit f0ffaf187a

View File

@ -26,7 +26,7 @@ static unsigned long ls1x_pll_recalc_rate(struct clk_hw *hw,
u32 pll, rate;
pll = __raw_readl(LS1X_CLK_PLL_FREQ);
rate = 12 + (pll & 0x3f) + (((pll >> 8) & 0x3ff) >> 10);
rate = 12 + (pll & GENMASK(5, 0));
rate *= OSC;
rate >>= 1;