[PATCH 07/22] clk: sunxi: Fix PLL6 calculation on sun6i
From: Chen-Yu Tsai <hidden>
Date: 2014-05-23 08:29:17
Also in:
linux-devicetree, linux-serial, lkml
Subsystem:
arm/allwinner soc clock support, common clk framework, the rest · Maintainers:
Emilio López, Michael Turquette, Stephen Boyd, Linus Torvalds
The N factor for PLL6 counts from 1 to 32, as specified in the A23 manual, and shown in Allwinner's original code. This patch fixes the N factor in the clock driver, as well as the comment describing it. Signed-off-by: Chen-Yu Tsai <redacted> --- drivers/clk/sunxi/clk-sunxi.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index b2c6d12..6500a1b 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c@@ -198,7 +198,7 @@ static void sun4i_get_pll5_factors(u32 *freq, u32 parent_rate, /** * sun6i_a31_get_pll6_factors() - calculates n, k factors for A31 PLL6 * PLL6 rate is calculated as follows - * rate = parent_rate * n * (k + 1) / 2 + * rate = parent_rate * (n + 1) * (k + 1) / 2 * parent_rate is always 24Mhz */
@@ -225,7 +225,7 @@ static void sun6i_a31_get_pll6_factors(u32 *freq, u32 parent_rate, if (*k > 3) *k = 3; - *n = DIV_ROUND_UP(div, (*k+1)); + *n = DIV_ROUND_UP(div, (*k+1)) - 1; } /**
@@ -434,6 +434,7 @@ static struct clk_factors_config sun6i_a31_pll6_config = { .nwidth = 5, .kshift = 4, .kwidth = 2, + .n_from_one = 1, }; static struct clk_factors_config sun4i_apb1_config = {
--
2.0.0.rc2