clk: renesas: rcar-gen3: Add boost support to Z clocks

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Add support for switching the Z and Z2 clocks between normal and boost
modes, by requesting clock rate changes to parent PLLs.

Inspired by a patch in the BSP by Takeshi Kihara
<takeshi.kihara.df@renesas.com>.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210326120100.1577596-8-geert+renesas@glider.be

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Geert Uytterhoeven 2021-03-26 13:01:00 +01:00

parent 3f70795636

commit 3a0e848458

1 changed files with 20 additions and 4 deletions

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drivers/clk/renesas/rcar-gen3-cpg.c

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