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Date: Fri, 26 Aug 2016 09:43:08 -0300 From: Fabio Estevam <festevam@...il.com> To: Anson Huang <Anson.Huang@....com> Cc: "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, linux-kernel <linux-kernel@...r.kernel.org>, Mark Rutland <mark.rutland@....com>, Russell King - ARM Linux <linux@...linux.org.uk>, "robh+dt@...nel.org" <robh+dt@...nel.org>, Sascha Hauer <kernel@...gutronix.de>, Fabio Estevam <fabio.estevam@....com>, Shawn Guo <shawnguo@...nel.org> Subject: Re: [PATCH 0/3] Add SMP support for i.MX7D Hi Anson, On Fri, Aug 26, 2016 at 8:12 AM, Anson Huang <Anson.Huang@....com> wrote: > i.MX7D has 2 Cortex-A7 ARM cores, and it has a different GPC design > than i.MX6, so this patch set adds a new GPCV2 driver for i.MX7D, > and also adds runtime check in SMP code to support both Cortex-A9 > and Cortex-A7 ARM cores. > > With this patch set, i.MX7D can boot up SMP kernel with 2 CPUs. Currently mx7d can boot the 2 CPUs if you use PSCI in the bootloader. Give mainline U-Boot a try and it will boot the 2 CPUs via PSCI. There was an attempt to add gpcv2 support at: https://patchwork.kernel.org/patch/6919831/ , and Shawn suggested to go to the PSCI approach. PSCI for mx7 is still missing suspend support though. Regards, Fabio Estevam
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