On Tue, May 9, 2017 at 11:20 AM, <ying.zhang22...@nxp.com> wrote: > On some Layerscape boards like LS2085ARDB/LS2080ARDB, > input pull-up resistors on PCA954x Mux device are > missing on board. So, if mux are disabled after powered-on, > input lines will float leading to incorrect functionality. > > Hence, PCA954x Mux device should never be turned-off after > power-on. > > Add option to skip disabling PCA954x Mux device > if device tree contians "i2c-mux-never-disable" property > for pca954x device node.
> +#ifdef CONFIG_ARCH_LAYERSCAPE This is 99.99% is no go. You need to spend more time to make the driver more generic (perhaps using device property instead) and not using ugly #ifdefery. -- With Best Regards, Andy Shevchenko
