The Allwinner Power Reset Clock Management (RPCM) block contains a few
bits that control some power domains. The most prominent one is the one
for the Mali GPU. On the Allwinner H6 this domain is enabled at reset, so
we didn't care about it so far, but the H616 defaults to it being disabled.
Add a power domain driver for those bits. Some BSP code snippets and
some spare documentation describe three bits, slightly different between
the H6 and H616, so add three power domains for each SoC, connected to
their compatible string.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20250416224839.9840-3-andre.przywara@arm.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
It has been pointed out that naming a subsystem "genpd" isn't very
self-explanatory and the acronym itself that means Generic PM Domain, is
known only by a limited group of people.
In a way to improve the situation, let's rename the subsystem to pmdomain,
which ideally should indicate that this is about so called Power Domains or
"PM domains" as we often also use within the Linux Kernel terminology.
Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230912221127.487327-1-ulf.hansson@linaro.org
