From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752840AbcANMda (ORCPT ); Thu, 14 Jan 2016 07:33:30 -0500 Received: from regular1.263xmail.com ([211.150.99.137]:44767 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750969AbcANMd3 (ORCPT ); Thu, 14 Jan 2016 07:33:29 -0500 X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 X-RL-SENDER: andy.yan@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 121.15.173.1 X-LOGIN-NAME: andy.yan@rock-chips.com X-UNIQUE-TAG: <2daa7045ede805037b4cdb4593e30d26> X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 From: Andy Yan To: heiko@sntech.de, naobsd@gmail.com Cc: robh+dt@kernel.org, linux@arm.linux.org.uk, devicetree@vger.kernel.org, galak@codeaurora.org, linux-kernel@vger.kernel.org, ijc+devicetree@hellion.org.uk, linux-rockchip@lists.infradead.org, pawel.moll@arm.com, mark.rutland@arm.com, inux-arm-kernel@lists.infradead.org, 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> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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