[U-Boot] [PATCH] sunxi: clk: fix N formula for CPUX clocks
Quentin Schulz
quentin.schulz at free-electrons.com
Tue Sep 26 14:02:47 UTC 2017
As explained in arch/arm/mach-sunxi/clock_sun8i_a83t.c, clk for CPU
clusters is computed as clk = 24*n. However, the current formula is clk
= 24*(n-1).
This results in a clock set to a frequency that isn't specified as
possible for CPUs.
Let's use the correct formula.
Fixes: f542948b1e8c ("sunxi: clk: add basic clocks for A83T")
Signed-off-by: Quentin Schulz <quentin.schulz at free-electrons.com>
---
arch/arm/include/asm/arch-sunxi/clock_sun8i_a83t.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun8i_a83t.h b/arch/arm/include/asm/arch-sunxi/clock_sun8i_a83t.h
index 5e1346e524..c4f5f5f958 100644
--- a/arch/arm/include/asm/arch-sunxi/clock_sun8i_a83t.h
+++ b/arch/arm/include/asm/arch-sunxi/clock_sun8i_a83t.h
@@ -158,7 +158,7 @@ struct sunxi_ccm_reg {
#define CPU_CLK_SRC_OSC24M 0
#define CPU_CLK_SRC_PLL1 1
-#define CCM_PLL1_CTRL_N(n) ((((n) - 1) & 0xff) << 8)
+#define CCM_PLL1_CTRL_N(n) (((n) & 0xff) << 8)
#define CCM_PLL1_CTRL_P(n) (((n) & 0x1) << 16)
#define CCM_PLL1_CTRL_EN (0x1 << 31)
#define CMM_PLL1_CLOCK_TIME_2 (0x2 << 24)
--
2.11.0
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