On Tue, Oct 27, 2015 at 06:25:04PM +0000, Stuart Yoder wrote: > I think that comment "Currently supported enable-method is psci v0.2" is a > statement of > intent, not what is available currently. And the only plan I am aware of is > PSCI > with UEFI based firmware. > > U-boot is a key firmware platform for us and has no PSCI implementation > available.
Please note that PSCI isn't implemented by UEFI. On ARM Juno (and other platforms), PSCI is implemented by ARM Trusted Firmware [1], and the non-secure side can be UEFI (EDK2), U-Boot, or something else entirely. > So, we need this. The device tree simply describes the hardware that is > there and that's what this patch exposes. > > If down the road all firmware provides a PSCI based reset interface then > we will naturally use that. But we need something in the meantime to > let us reboot the system. I appreciate that you need this if you do not have a PSCI implementation. I was mislead by the comment. Thanks, Mark. [1] https://github.com/ARM-software/arm-trusted-firmware -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
