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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jacky Bai , Anson Huang , Shawn Guo , Sascha Hauer , "linux-kernel@vger.kernel.org" , dl-linux-imx , Pengutronix Kernel Team , Fabio Estevam , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 22.05.2019 16:13, Guido G=FCnther wrote: > Subject: Re: [RFC PATCH] soc: imx: Try harder to get imq8mq SoC revisions Fixed subject > On Wed, May 08, 2019 at 02:40:18PM +0200, Guido G=FCnther wrote: >> Thanks for your comments. Let's try s.th. different then: identify by >> bootrom, ocotop and anatop and fall back to ATF afterwards (I'll split >> out the DT part and add binding docs if this makes sense). I'm also >> happy to drop the whole ATF logic until mailine ATF catched up: >> >> The mainline ATF doesn't currently support the FSL_SIP_GET_SOC_INFO call >> nor does it have the code to identify different imx8mq SOC revisions so >> mimic what NXPs ATF does here. > = > Does this makes sense? If so I'll send this out as a series. Mainline ATF has recently caught up: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/tree/plat/imx/i= mx8m/imx8mq/imx8mq_bl31_setup.c#n52 >> As a fallback use ATF so we can identify new revisions once it gains >> support or when using NXPs ATF. > = > I'm also fine with dropping the ATF part if we don't want to depend on > it in mainline. Linux arm64 depends on ATF to implement power management via PSCI: = hotplug cpuidle and suspend. It is not clear why Linux would avoid other services and insist on = reimplementing hardware workarounds. -- Regards, Leonard _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel