From 2018ef868c1faf6231b8aeb6d0427f139923a9a6 Mon Sep 17 00:00:00 2001 From: Ye Li <ye.li@nxp.com> Date: Wed, 5 Apr 2017 10:36:58 +0800 Subject: [PATCH] imx: mx7ulp: Fix SPLL/APLL clock rate calculation issue The num/denom is a float value, but in the calculation it is convert to integer 0, and wrong result. Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Cc: Stefano Babic <sbabic@denx.de> --- arch/arm/cpu/armv7/mx7ulp/scg.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm/cpu/armv7/mx7ulp/scg.c b/arch/arm/cpu/armv7/mx7ulp/scg.c index ca8252d0d2..c117af0a0e 100644 --- a/arch/arm/cpu/armv7/mx7ulp/scg.c +++ b/arch/arm/cpu/armv7/mx7ulp/scg.c @@ -504,7 +504,9 @@ u32 decode_pll(enum pll_clocks pll) num = readl(&scg1_regs->spllnum); denom = readl(&scg1_regs->splldenom); - return (infreq / pre_div) * (mult + num / denom); + infreq = infreq / pre_div; + + return infreq * mult + infreq * num / denom; case PLL_A7_APLL: reg = readl(&scg1_regs->apllcsr); @@ -531,7 +533,9 @@ u32 decode_pll(enum pll_clocks pll) num = readl(&scg1_regs->apllnum); denom = readl(&scg1_regs->aplldenom); - return (infreq / pre_div) * (mult + num / denom); + infreq = infreq / pre_div; + + return infreq * mult + infreq * num / denom; case PLL_USB: reg = readl(&scg1_regs->upllcsr); -- 2.39.5