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CLK: ARC: HSDK: make set_clock optional

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We don't want to allow change some clocks, i.e. DDR clock.
So allow to have set_clock to be unset in clock map.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
This commit is contained in:
Eugeniy Paltsev 2020-05-07 20:18:41 +03:00 committed by Alexey Brodkin
parent debfe38445
commit c6988688ee
1 changed files with 4 additions and 1 deletions
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5
drivers/clk/clk-hsdk-cgu.c
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@ -662,7 +662,10 @@ static ulong hsdk_cgu_set_rate(struct clk *sclk, ulong rate)
if (hsdk_prepare_clock_tree_branch(sclk))
return -EINVAL;
return clk->map[sclk->id].set_rate(sclk, rate);
if (clk->map[sclk->id].set_rate)
return clk->map[sclk->id].set_rate(sclk, rate);
return -ENOTSUPP;
}
static int hsdk_cgu_disable(struct clk *sclk)