Messages in this thread | | | From | Anson Huang <> | Subject | RE: [PATCH V4 2/2] clk: imx: scu: add cpu frequency scaling support | Date | Sat, 16 Feb 2019 00:41:24 +0000 |
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Hi, Stephen
Best Regards! Anson Huang
> -----Original Message----- > From: Stephen Boyd [mailto:sboyd@kernel.org] > Sent: 2019年2月16日 7:58 > To: devicetree@vger.kernel.org; festevam@gmail.com; > kernel@pengutronix.de; linux-arm-kernel@lists.infradead.org; linux- > clk@vger.kernel.org; linux-kernel@vger.kernel.org; mark.rutland@arm.com; > mturquette@baylibre.com; robh+dt@kernel.org; s.hauer@pengutronix.de; > shawnguo@kernel.org; viresh.kumar@linaro.org; Aisheng Dong > <aisheng.dong@nxp.com>; Anson Huang <anson.huang@nxp.com>; Daniel > Baluta <daniel.baluta@nxp.com> > Cc: dl-linux-imx <linux-imx@nxp.com> > Subject: Re: [PATCH V4 2/2] clk: imx: scu: add cpu frequency scaling support > > Quoting Anson Huang (2019-02-13 17:54:08) > > On NXP's i.MX SoCs with system controller inside, CPU frequency > > scaling can ONLY be done by system controller firmware, and it can > > ONLY be requested from secure mode, so Linux kernel has to call ARM > > SMC to trap to ARM-Trusted-Firmware to request system controller > > firmware to do CPU frequency scaling. > > > > This patch adds i.MX system controller CPU frequency scaling support, > > it reuses cpufreq-dt driver and implement the CPU frequency scaling > > inside SCU clock driver. > > > > Signed-off-by: Anson Huang <Anson.Huang@nxp.com> > > --- > > Acked-by: Stephen Boyd <sboyd@kernel.org> > > Unless you wanted me to pick this patch up into clk-next?
Yes, please, we want to support cpu-freq scaling in Linux next tree ASAP.
Thanks, Anson.
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