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clk: Fix invalid execution of clk_set_rate

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Some clocks have rates that can be changed elsewhere, so add a flag
CLK_GET_RATE_NOCACHE(such as scmi_clk) to these clocks to ensure that
the real-time rate is obtained.

When clk_set_rate is called, it is returned if the request to set rate
is consistent with the current rate. Getting the current rate in
clk_set_rate returns the rate stored in clk_core. CLK_GET_RATE_NOCACHE
does not take effect here.

Signed-off-by: Chuan Liu <chuan.liu@amlogic.com>
Link: https://lore.kernel.org/r/20240910-fix_clk-v1-1-111443baaeaa@amlogic.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Chuan Liu 2024-09-10 13:53:44 +08:00 committed by Stephen Boyd
parent 6e4bf018bb
commit 25f1c96a0e
1 changed files with 1 additions and 1 deletions
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drivers/clk/clk.c
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@ -2530,7 +2530,7 @@ static int clk_core_set_rate_nolock(struct clk_core *core,
rate = clk_core_req_round_rate_nolock(core, req_rate);
/* bail early if nothing to do */
if (rate == clk_core_get_rate_nolock(core))
if (rate == clk_core_get_rate_recalc(core))
return 0;
/* fail on a direct rate set of a protected provider */