From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Zhao Subject: Re: [PATCH V2 3/4] arm/imx6q: register arm_clk as cpu to clkdev Date: Sat, 17 Dec 2011 15:56:15 +0800 Message-ID: <20111217075612.GA2010@richard-laptop> References: <1324031462-24961-1-git-send-email-richard.zhao@linaro.org> <1324031462-24961-4-git-send-email-richard.zhao@linaro.org> <21672683C5A3814BB4DB938EBE482DE40A1AE8EF74@IAD2MBX09.mex02.mlsrvr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <21672683C5A3814BB4DB938EBE482DE40A1AE8EF74@IAD2MBX09.mex02.mlsrvr.com> Sender: cpufreq-owner@vger.kernel.org To: Mark Langsdorf Cc: "linux-arm-kernel@lists.infradead.org" , "cpufreq@vger.kernel.org" , "devicetree-discuss@lists.ozlabs.org" , "linux@arm.linux.org.uk" , "davej@redhat.com" , "kernel@pengutronix.de" , "shawn.guo@linaro.org" , "eric.miao@linaro.org" , "linaro-dev@lists.linaro.org" , "patches@linaro.org" List-Id: devicetree@vger.kernel.org On Fri, Dec 16, 2011 at 11:35:39AM -0500, Mark Langsdorf wrote: > Is there a portable/generic approach for other drivers that may > want to use arm-cpufreq.c? arm_clk is not normally defined for > my SoC and I don't see an easy way to pull it in. Could you tell me the details? Is your board arch/arm/mach-highbank/ Rob maintained? clk API is the most generic way for arm as far as I find out. Thanks Richard > > --Mark Langsdorf > Calxeda, Inc. > > ________________________________________ > From: Richard Zhao [richard.zhao@linaro.org] > Sent: Friday, December 16, 2011 4:31 AM > To: linux-arm-kernel@lists.infradead.org; cpufreq@vger.kernel.org; devicetree-discuss@lists.ozlabs.org > Cc: linux@arm.linux.org.uk; davej@redhat.com; kernel@pengutronix.de; shawn.guo@linaro.org; eric.miao@linaro.org; Mark Langsdorf; linaro-dev@lists.linaro.org; patches@linaro.org; Richard Zhao > Subject: [PATCH V2 3/4] arm/imx6q: register arm_clk as cpu to clkdev > > cpufreq needs cpu clock to change frequency. > > Signed-off-by: Richard Zhao > --- > arch/arm/mach-imx/clock-imx6q.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/mach-imx/clock-imx6q.c b/arch/arm/mach-imx/clock-imx6q.c > index 039a7ab..72acbc2 100644 > --- a/arch/arm/mach-imx/clock-imx6q.c > +++ b/arch/arm/mach-imx/clock-imx6q.c > @@ -1911,6 +1911,7 @@ static struct clk_lookup lookups[] = { > _REGISTER_CLOCK(NULL, "gpmi_io_clk", gpmi_io_clk), > _REGISTER_CLOCK(NULL, "usboh3_clk", usboh3_clk), > _REGISTER_CLOCK(NULL, "sata_clk", sata_clk), > + _REGISTER_CLOCK(NULL, "cpu", arm_clk), > }; > > int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode) > -- > 1.7.5.4