On Thu, Aug 9, 2012 at 8:41 PM, Shawn Guo <shawn....@linaro.org> wrote: > On Thu, Aug 09, 2012 at 09:29:39AM -0500, Matt Sealey wrote: >> The reason the new kernel depends on the new U-Boot is we're trying to >> do all pinmux configuration in U-Boot (and we do in-house, and it >> works). No pinctrl stuff in the kernel or device tree is required at >> this point. The Old Kernel will remux a few things redundantly or >> change drive strengths or whatever or add hysteresis to the UART port >> which is not board-burning but is not really necessary, but it will >> work. The new kernel will just be able to do what it does out of the >> box, which is how it should be (hence why I object to adding pinctrl >> setup...) > > Then I will have to refuse to accept your patch, because I'm working on > a series to remove pinctrl_provide_dummies() from imx51_dt_init().
Requiring it breaks the entire concept of the device tree to describe running hardware. It is not a configuration script. pinctrl should be optional - built in always, but not necessary to turn a board on if it's already configured. What would happen if a board were designed that only used the default ALT settings on i.MX53 or so? You'd have to redefine every default IOMUX pad just to get it to boot. That's intolerable. -- Matt Sealey <m...@genesi-usa.com> Product Development Analyst, Genesi USA, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
