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clk: ingenic: Respect CLK_SET_RATE_PARENT in .round_rate

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Clocks that don't have a divider are in our case all marked with the
CLK_SET_RATE_PARENT flag. In this case, the .round_rate implementation
should modify the value pointed to by parent_rate, in order to propagate
the rate change to the parent, as explained in the documentation of
clk_set_rate().

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200903015048.3091523-5-paul@crapouillou.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Paul Cercueil 2020-09-03 03:50:48 +02:00 committed by Stephen Boyd
parent 2e4ee634f8
commit 1a3c4dd4e1
1 changed files with 2 additions and 0 deletions
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drivers/clk/ingenic/cgu.c
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@ -445,6 +445,8 @@ ingenic_clk_round_rate(struct clk_hw *hw, unsigned long req_rate,
div = ingenic_clk_calc_div(clk_info, *parent_rate, req_rate);
else if (clk_info->type & CGU_CLK_FIXDIV)
div = clk_info->fixdiv.div;
else if (clk_hw_can_set_rate_parent(hw))
*parent_rate = req_rate;
return DIV_ROUND_UP(*parent_rate, div);
}