From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Subject: Re: [RFC] ARM: EXYNOS: reset KFC cores when cpu is up Date: Wed, 15 Jul 2015 12:42:30 +0900 Message-ID: <55A5D6A6.8080604@samsung.com> References: <1436924213-29732-1-git-send-email-parkch98@gmail.com> <55A5BB5A.2040807@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mailout4.w1.samsung.com ([210.118.77.14]:43528 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750996AbbGODme (ORCPT ); Tue, 14 Jul 2015 23:42:34 -0400 Received: from eucpsbgm2.samsung.com (unknown [203.254.199.245]) by mailout4.w1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0NRI00BCOFMVAL50@mailout4.w1.samsung.com> for linux-samsung-soc@vger.kernel.org; Wed, 15 Jul 2015 04:42:31 +0100 (BST) In-reply-to: Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: chanho61.park@samsung.com Cc: Kukjin Kim , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Joonyoung Shim , Chanwoo Choi , Kevin Hilman , Heesub Shin , Mauro Ribeiro , Abhilash Kesavan , Przemyslaw Marczak , Marek Szyprowski On 15.07.2015 11:31, Chanho Park wrote: > Hi, > > On Wed, Jul 15, 2015 at 10:46 AM, Krzysztof Kozlowski > wrote: >> On 15.07.2015 10:36, Chanho Park wrote: >>> The cpu booting of exynos5422 has been still broken since we discussed >>> it in last year[1]. I found this resetting codes from odroid-xu3 kernel of >>> hardkernel, it could help to boot 8 cores well. This patch need to have >>> more test like STR and other SoC especially exynos5800 which is variant >>> of exynos5422. If this patch is broken on exynos5800, I'll find another >>> way to check exynos5422. >>> >>> This patch is top of my previous exynos5422 cpu ordering patch[2] and >>> need to enable CONFIG_EXYNOS5420_MCPM=y >> >> 1. Why the ordering patch is required? It seems unrelated... > > Because it related with my booting log :) > >> 2. I tried this already (as in vendor sources from >> opensource.samsung.com) and it did not help on my Odroid. Are you sure >> that this patch solely fixes the problem? > > If you turned on CONFIG_DEBUG_LL, you'll need Joonyoung's patch to > correct uart address of exynos5422. > http://www.spinics.net/lists/linux-samsung-soc/msg37318.html I mean that you don't need anything else to fix the problem? I'll give it a try later on my board but I was quite sure that I checked this before :) . Best regards, Krzysztof From mboxrd@z Thu Jan 1 00:00:00 1970 From: k.kozlowski@samsung.com (Krzysztof Kozlowski) Date: Wed, 15 Jul 2015 12:42:30 +0900 Subject: [RFC] ARM: EXYNOS: reset KFC cores when cpu is up In-Reply-To: References: <1436924213-29732-1-git-send-email-parkch98@gmail.com> <55A5BB5A.2040807@samsung.com> Message-ID: <55A5D6A6.8080604@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 15.07.2015 11:31, Chanho Park wrote: > Hi, > > On Wed, Jul 15, 2015 at 10:46 AM, Krzysztof Kozlowski > wrote: >> On 15.07.2015 10:36, Chanho Park wrote: >>> The cpu booting of exynos5422 has been still broken since we discussed >>> it in last year[1]. I found this resetting codes from odroid-xu3 kernel of >>> hardkernel, it could help to boot 8 cores well. This patch need to have >>> more test like STR and other SoC especially exynos5800 which is variant >>> of exynos5422. If this patch is broken on exynos5800, I'll find another >>> way to check exynos5422. >>> >>> This patch is top of my previous exynos5422 cpu ordering patch[2] and >>> need to enable CONFIG_EXYNOS5420_MCPM=y >> >> 1. Why the ordering patch is required? It seems unrelated... > > Because it related with my booting log :) > >> 2. I tried this already (as in vendor sources from >> opensource.samsung.com) and it did not help on my Odroid. Are you sure >> that this patch solely fixes the problem? > > If you turned on CONFIG_DEBUG_LL, you'll need Joonyoung's patch to > correct uart address of exynos5422. > http://www.spinics.net/lists/linux-samsung-soc/msg37318.html I mean that you don't need anything else to fix the problem? I'll give it a try later on my board but I was quite sure that I checked this before :) . Best regards, Krzysztof