From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@freescale.com (Shawn Guo) Date: Thu, 26 Jun 2014 13:54:32 +0800 Subject: [PATCH V2] ARM: imx: add cpufreq support for i.mx6sx In-Reply-To: References: <1403687412-22362-1-git-send-email-b20788@freescale.com> Message-ID: <20140626055431.GC7859@dragon> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Jun 25, 2014 at 10:23:01PM -0300, Fabio Estevam wrote: > Hi Anson, > > On Wed, Jun 25, 2014 at 6:10 AM, Anson Huang wrote: > > Add cpufreq support for i.MX6SX, using common > > i.MX6Q cpufreq driver. > > > > Signed-off-by: Anson Huang > > --- > > arch/arm/mach-imx/mach-imx6sx.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/arch/arm/mach-imx/mach-imx6sx.c b/arch/arm/mach-imx/mach-imx6sx.c > > index 74ff7d6..9221e1d 100644 > > --- a/arch/arm/mach-imx/mach-imx6sx.c > > +++ b/arch/arm/mach-imx/mach-imx6sx.c > > @@ -42,6 +42,9 @@ static void __init imx6sx_init_irq(void) > > static void __init imx6sx_init_late(void) > > { > > imx6q_cpuidle_init(); > > + > > + if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) > > + platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); > > } > > With this patch applied I get a flood of these messages: > > cpu cpu0: failed to scale vddpu up: -22 > cpufreq: __target_index: Failed to change cpu frequency: -22 > cpu cpu0: failed to scale vddpu up: -22 > cpufreq: __target_index: Failed to change cpu frequency: -22 > cpu cpu0: failed to scale vddpu up: -22 > cpufreq: __target_index: Failed to change cpu frequency: -22 So it's because the driver change for imx6sx hasn't been in place. I just dropped the patch from my branch for now, and will revisit later when driver part shows up on my branch. (Unfortunately, that will be next cycle). Shawn