From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753071AbcAQXRL (ORCPT ); Sun, 17 Jan 2016 18:17:11 -0500 Received: from gloria.sntech.de ([95.129.55.99]:34609 "EHLO gloria.sntech.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750769AbcAQXRJ (ORCPT ); Sun, 17 Jan 2016 18:17:09 -0500 From: Heiko Stuebner To: Andy Yan Cc: naobsd@gmail.com, 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 Subject: Re: [PATCH v2 0/2] fix rk3066a based boards hang when cpufreq changes Date: Mon, 18 Jan 2016 00:16:50 +0100 Message-ID: <1825501.4ZfleL6hBQ@phil> User-Agent: KMail/4.14.10 (Linux/4.3.0-1-amd64; KDE/4.14.14; x86_64; ; ) In-Reply-To: <1452864223-423-1-git-send-email-andy.yan@rock-chips.com> References: <1452864223-423-1-git-send-email-andy.yan@rock-chips.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Andy, Am Freitag, 15. Januar 2016, 21:23:43 schrieb Andy Yan: > 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. applied both to my dts32 branch for 4.6 Thanks Heiko