> -----Original Message----- > From: Arnd Bergmann [mailto:arnd@xxxxxxxx] > Sent: Friday, October 30, 2015 8:36 AM > To: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > Cc: Yoder Stuart-B08248; Mark Rutland; devicetree@xxxxxxxxxxxxxxx; Sharma Bhupesh-B45370; Rivera Jose-B46482; > linux-kernel@xxxxxxxxxxxxxxx; robh+dt@xxxxxxxxxx; Li Yang-Leo-R58472 > Subject: Re: [PATCH] arm64: dts: Added syscon-reboot node for FSL's LS2085A SoC > > On Tuesday 27 October 2015 18:25:04 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. > > I believe U-boot has supported PSCI since 2013. Maybe you just need to update > to a newer version? We are using a very recent u-boot. U-boot for ARMv8, which is what this SoC is based on, does not have PSCI as far as I can tell. We (Freescale) plan to eventually have an EL3 firmware component that could remain resident for u-boot based systems, but it is a roadmap thing and I don't know when we're going to get it. So, for now, most straightforward thing is to get reboot functionality is to expose the reset register via syscon-reboot in the DT...no new driver needed. Once a PSCI component is available we'll move to it. Thanks, Stuart -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
