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In the Amlogic Meson8 / Meson8b platforms we have two different buses: cbus and aobus, corresponding to 2 different power domains (regular and always-on). On each bus a different set of registers is mapped to manage muxes, GPIOs and in general to control a clear subset of the pins. Considering this architecture, having two different pinctrl devices, one for each bus / power domain, makes much more sense than just having one single device. Right now we have one single pin controller driver that uses two different domains (represented by 'gpio' and 'gpio-ao' sub-nodes in the DTS) to manage the set of registers on the two buses. This dual-domain configuration is hardcoded into the driver that strictly requires one domain for each bus in the same pin controller device. With this patch we refactor the driver to allow splitting the driver in two parts. This change is needed to have a proper description of the HW in the device-tree where we want to introduce aobus and cbus. Signed-off-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
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| Makefile | ||
| pinctrl-meson8.c | ||
| pinctrl-meson8b.c | ||
| pinctrl-meson.c | ||
| pinctrl-meson.h | ||