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| author |   Jernej Škrabec <jernej.skrabec@siol.net> | 2017-07-30 18:41:50 +0200 |
|---|---|---|
| committer |   Chen-Yu Tsai <wens@csie.org> | 2017-08-01 10:18:23 +0800 |
| commit | 1d42460a49347af4d1db345197e5d1277336b312 (patch) | |
| tree | 498fbed490863e0f21f0fea82658cca448ce45bf /drivers/clk/sunxi-ng/ccu_frac.c | |
| parent | clk: sunxi-ng: Make fractional helper less chatty (diff) | |
| download | linux-dev-1d42460a49347af4d1db345197e5d1277336b312.tar.xz linux-dev-1d42460a49347af4d1db345197e5d1277336b312.zip | |
clk: sunxi-ng: Wait for lock when using fractional mode
Currently ccu_frac_helper_set_rate() doesn't wait for a lock bit to be
set before returning. Because of that, unstable clock may be used.
Add a wait for lock in the helper function.
Fixes: 89a3dfb78707 ("clk: sunxi-ng: Add fractional lib")
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Diffstat (limited to 'drivers/clk/sunxi-ng/ccu_frac.c')
| -rw-r--r-- | drivers/clk/sunxi-ng/ccu_frac.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_frac.c b/drivers/clk/sunxi-ng/ccu_frac.c index ff9e72dc5337..d1d168d4c4f0 100644 --- a/drivers/clk/sunxi-ng/ccu_frac.c +++ b/drivers/clk/sunxi-ng/ccu_frac.c @@ -85,7 +85,7 @@ unsigned long ccu_frac_helper_read_rate(struct ccu_common *common, int ccu_frac_helper_set_rate(struct ccu_common *common, struct ccu_frac_internal *cf, - unsigned long rate) + unsigned long rate, u32 lock) { unsigned long flags; u32 reg, sel; @@ -106,5 +106,7 @@ int ccu_frac_helper_set_rate(struct ccu_common *common, writel(reg | sel, common->base + common->reg); spin_unlock_irqrestore(common->lock, flags); + ccu_helper_wait_for_lock(common, lock); + return 0; } |