i3c: renesas: Update HW registers after SW computations are done

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renesas_i3c_bus_init() performs a number of computations and software
cache updates, interleaving them with hardware register writes. While
this works today, it makes it harder to minimize the time the controller
must remain powered when runtime PM is introduced.

Perform all software computations and cache updates first, then update
the hardware registers. This prepares for future runtime PM support.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/20260713130545.568657-14-claudiu.beznea+renesas@tuxon.dev
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

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Claudiu Beznea 2026-07-13 16:05:41 +03:00 • committed by Alexandre Belloni

parent 5e0b4ae801

commit 826a7d3d5f

1 changed files with 14 additions and 14 deletions

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drivers/i3c/master/renesas-i3c.c

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