clk: microchip: mpfs: use regmap for clocks

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Convert the PolarFire SoC clock driver to use regmaps instead of iomem
addresses as a preparatory work for supporting the new binding for this
device that will only provide the second of the two register regions, and
will require the use of syscon regmap to access the "cfg" and "periph"
clocks currently supported by the driver.

This is effectively a revert of commit 4da2404bb0 ("clk: microchip:
mpfs: convert cfg_clk to clk_divider") and commit d815569783 ("clk:
microchip: mpfs: convert periph_clk to clk_gate") as it resurrects the
ops structures removed in those commits, with the readl()s and
writel()s replaced by regmap_read()s and regmap_writes()s.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Link: https://lore.kernel.org/r/20251029-surfboard-refocus-ca9b135ab123@spud
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>

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This commit is contained in:

Conor Dooley 2025-10-29 16:11:19 +00:00 • committed by Claudiu Beznea

parent eb43534ee4

commit c6f2dddfa7

2 changed files with 186 additions and 43 deletions

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2

drivers/clk/microchip/Kconfig

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227

drivers/clk/microchip/clk-mpfs.c

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