On Mon, Sep 19, 2022 at 01:39:42PM +0200, Michael Riesch wrote: > The IO domains in Rockchip SoCs need to be configured to match the > corresponding bank voltage. In Linux this is achieved by means of a > platform driver that reads the voltage value of the supplies and > configures the bits in the general register file (GRF) accordingly. > Port this driver to barebox to provide support for the Rockchip > RK356x SoCs. > > Signed-off-by: Michael Riesch <michael.riesch@xxxxxxxxxxxxxx> > --- > drivers/soc/Kconfig | 1 + > drivers/soc/Makefile | 1 + > drivers/soc/rockchip/Kconfig | 17 +++ > drivers/soc/rockchip/Makefile | 6 + > drivers/soc/rockchip/io-domain.c | 223 +++++++++++++++++++++++++++++++ > 5 files changed, 248 insertions(+) > create mode 100644 drivers/soc/rockchip/Kconfig > create mode 100644 drivers/soc/rockchip/Makefile > create mode 100644 drivers/soc/rockchip/io-domain.c There's nothing in this driver that makes sure it is probed before the users of the io domains. What happens when the users are probed before the io domain driver? Normally I would expect that the consumers have some phandle to their io domain, but there's nothing like it in the device trees. Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
