From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pankaj Dubey Subject: Re: [1/2] ARM: dts: Fix bootup issue on smdk5250 Date: Tue, 28 Apr 2015 16:35:45 +0530 Message-ID: <553F6989.3080406@samsung.com> References: <1416312509-11530-1-git-send-email-yadi.brar@samsung.com> <546D67A1.1080804@samsung.com> <038501d00604$034a9640$09dfc2c0$@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mailout3.samsung.com ([203.254.224.33]:45481 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933179AbbD1LEh (ORCPT ); Tue, 28 Apr 2015 07:04:37 -0400 In-reply-to: <038501d00604$034a9640$09dfc2c0$@kernel.org> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Kukjin Kim , 'Yadwinder Singh Brar' , devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: robh+dt@kernel.org, yadi.brar01@gmail.com Hi Kukjin, On Saturday 22 November 2014 08:55 AM, Kukjin Kim wrote: > Pankaj Dubey wrote: >> >> Hi, >> > Hi, > > Yadwinder, please don't miss [PATCH 1/2] in subject, so that my e-mail client > can't filter wrong ;) > >> On Tuesday 18 November 2014 05:38 PM, Yadwinder Singh Brar wrote: >>> With default config on smdk5250 latest tree throws below message : >>> >>> [ 2.226049] thermal thermal_zone0: critical temperature reached(224 C),shutting down >>> [ 2.227840] reboot: Failed to start orderly shutdown: forcing the issue >>> >>> and hangs randomly because it reads wrong temperature value. >>> >>> I can't figure out any direct relation between LDO10 and TMU from board >>> schematics which I have. So making LDO10 always-on to fix issue for now. >>> > Hmm...strange, I also can't see any relations now...but I need to contact to > hardware guy before applying this, this fixes the problem though. > By any chance you got time to check with HW engineer, as issue is there without this patch, SMDK5250 fails to boot and hangs. Thanks, Pankaj Dubey > Thanks, > Kukjin > >>> Signed-off-by: Yadwinder Singh Brar >>> >> >> Tested this on SMDK5250 board, system boot is fine now, hence >> >> Tested-by: Pankaj Dubey >> >>> --- >>> arch/arm/boot/dts/exynos5250-smdk5250.dts | 1 + >>> 1 files changed, 1 insertions(+), 0 deletions(-) >>> >>> diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts >>> index bc27cc2..95b5b51 100644 >>> --- a/arch/arm/boot/dts/exynos5250-smdk5250.dts >>> +++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts >>> @@ -190,6 +190,7 @@ >>> regulator-name = "P1.8V_LDO_OUT10"; >>> regulator-min-microvolt = <1800000>; >>> regulator-max-microvolt = <1800000>; >>> + regulator-always-on; >>> }; >>> >>> ldo11_reg: LDO11 { >>> > >