From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Yan Subject: [PATCH 0/2] fix rk3066a-rayeager board hang when cpufreq changes Date: Thu, 14 Jan 2016 20:33:00 +0800 Message-ID: <1452774780-16493-1-git-send-email-andy.yan@rock-chips.com> Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org, naobsd-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Cc: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, inux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Andy Yan List-Id: devicetree@vger.kernel.org I found the rayeager board always hang in the system boot process or when cpufreq change. When check the BSP code[0] from ChipSpark, I found the current vdd_arm voltage is too low and so is the vdd_logic voltage, which should be modulated by PWM3. So I increase the vdd_arm voltage and enabled pwm3 as a pwm regulator here. [0] https://github.com/RockchipOpensourceCommunity/px2-android-kernel-3.0/blob/master/arch/arm/mach-rkpx2/board-rkpx2-sdk.c Andy Yan (2): ARM: dts: rockchip: increase vdd_arm voltage for rk3066a-rayeager board ARM: dts: rockchip: enable pwm3 as pwm regulator for rk3066a-rayeager board arch/arm/boot/dts/rk3066a-rayeager.dts | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html