diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2014-06-26 23:55:41 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-18 13:22:34 +0100 |
| commit | 6e6493c26e176987bf215625ebcaea5954a05fa1 (patch) | |
| tree | 335f6dd381348c9a9391d2bd6df2248f576c7c4e /drivers | |
| parent | 28e75102ed1fbc6529751865b6b12070cb161b8d (diff) | |
| download | lwn-6e6493c26e176987bf215625ebcaea5954a05fa1.tar.gz lwn-6e6493c26e176987bf215625ebcaea5954a05fa1.zip | |
clk: sunxi: Support factor clocks with N factor starting not from 0
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 <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/sunxi/clk-factors.c | 2 | ||||
| -rw-r--r-- | drivers/clk/sunxi/clk-factors.h | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/clk/sunxi/clk-factors.c b/drivers/clk/sunxi/clk-factors.c index 88523f91d9b7..7555793097f2 100644 --- a/drivers/clk/sunxi/clk-factors.c +++ b/drivers/clk/sunxi/clk-factors.c @@ -70,7 +70,7 @@ static unsigned long clk_factors_recalc_rate(struct clk_hw *hw, 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; } diff --git a/drivers/clk/sunxi/clk-factors.h b/drivers/clk/sunxi/clk-factors.h index f49851cc4380..441fdc3f5717 100644 --- 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, |