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-rw-r--r--arch/arm/cpu/armv7/sunxi/clock_sun6i.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
index 193e314..ad50dd9 100644
--- a/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
+++ b/arch/arm/cpu/armv7/sunxi/clock_sun6i.c
@@ -148,13 +148,18 @@ void clock_set_pll5(unsigned int clk, bool sigma_delta_enable)
{
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
- const int k = 2;
- const int m = 1;
+ const int max_n = 32;
+ int k = 1, m = 2;
if (sigma_delta_enable)
writel(CCM_PLL5_PATTERN, &ccm->pll5_pattern_cfg);
/* PLL5 rate = 24000000 * n * k / m */
+ if (clk > 24000000 * k * max_n / m) {
+ m = 1;
+ if (clk > 24000000 * k * max_n / m)
+ k = 2;
+ }
writel(CCM_PLL5_CTRL_EN |
(sigma_delta_enable ? CCM_PLL5_CTRL_SIGMA_DELTA_EN : 0) |
CCM_PLL5_CTRL_UPD |