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| author | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2016-09-20 22:58:31 +0200 |
|---|---|---|
| committer | Stephen Boyd <sboyd@codeaurora.org> | 2016-09-20 17:03:04 -0700 |
| commit | 4135b7f8d42180d6d9820b53b0ab5e3377b7c364 (patch) | |
| tree | 584f17d64287176f62c43d0c65230c74cad9b238 /drivers/clk/at91/sckc.c | |
| parent | 4b13b6451a9dce278881d236d33d4bb0cb28592b (diff) | |
| download | lwn-4135b7f8d42180d6d9820b53b0ab5e3377b7c364.tar.gz lwn-4135b7f8d42180d6d9820b53b0ab5e3377b7c364.zip | |
clk: at91: sckc: optimize boot time
Assume that if the oscillator is enabled (OSC32EN bit is present), the
delay has already elapsed as the bootloader probably waited for the
oscillator to settle. This could waste up to 1.2s.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk/at91/sckc.c')
| -rw-r--r-- | drivers/clk/at91/sckc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/clk/at91/sckc.c b/drivers/clk/at91/sckc.c index 199d1b3f5ad3..ab6ecefc49ad 100644 --- a/drivers/clk/at91/sckc.c +++ b/drivers/clk/at91/sckc.c @@ -69,7 +69,7 @@ static int clk_slow_osc_prepare(struct clk_hw *hw) void __iomem *sckcr = osc->sckcr; u32 tmp = readl(sckcr); - if (tmp & AT91_SCKC_OSC32BYP) + if (tmp & (AT91_SCKC_OSC32BYP | AT91_SCKC_OSC32EN)) return 0; writel(tmp | AT91_SCKC_OSC32EN, sckcr); |