3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chen-Yu Tsai <w...@csie.org>
commit 9a5e6c7eb5ccbb5f0d3a1dffce135f0a727f40e1 upstream.
The PLLs on newer Allwinner SoC's, such as the A31 and A23, have a
N multiplier factor that starts from 1, not 0.
This patch adds an option to the factor clk driver's config data
structures to specify the base value of N.
Signed-off-by: Chen-Yu Tsai <w...@csie.org>
Acked-by: Maxime Ripard <maxime.rip...@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.rip...@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/clk/sunxi/clk-factors.c | 2 +-
drivers/clk/sunxi/clk-factors.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/clk/sunxi/clk-factors.c
+++ b/drivers/clk/sunxi/clk-factors.c
@@ -70,7 +70,7 @@ static unsigned long clk_factors_recalc_
p = FACTOR_GET(config->pshift, config->pwidth, reg);
/* Calculate the rate */
- rate = (parent_rate * n * (k + 1) >> p) / (m + 1);
+ rate = (parent_rate * (n + config->n_start) * (k + 1) >> p) / (m + 1);
return rate;
}
--- a/drivers/clk/sunxi/clk-factors.h
+++ b/drivers/clk/sunxi/clk-factors.h
@@ -15,6 +15,7 @@ struct clk_factors_config {
u8 mwidth;
u8 pshift;
u8 pwidth;
+ u8 n_start;
};
struct clk *clk_register_factors(struct device *dev, const char *name,
--
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