From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Rutland Subject: Re: [PATCH v5 1/9] arm64: dts: exynos: Add dts files for 64-bit Exynos5433 SoC Date: Thu, 5 Mar 2015 17:04:50 +0000 Message-ID: <20150305170450.GG14093@leverpostej> References: <1425533911-14800-1-git-send-email-cw00.choi@samsung.com> <1425533911-14800-2-git-send-email-cw00.choi@samsung.com> <20150305122459.GC14093@leverpostej> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-samsung-soc-owner@vger.kernel.org To: Chanwoo Choi Cc: Chanwoo Choi , "kgene@kernel.org" , Marc Zyngier , "arnd@arndb.de" , "olof@lixom.net" , Catalin Marinas , Will Deacon , "inki.dae@samsung.com" , "chanho61.park@samsung.com" , "sw0312.kim@samsung.com" , "jh80.chung@samsung.com" , "ideal.song@samsung.com" , "a.kesavan@samsung.com" , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-samsung-soc@vger.kernel.org" , "linux-kernel@vger.kernel.org" List-Id: devicetree@vger.kernel.org Hi, [...] > >> + psci { > >> + compatible = "arm,psci"; > >> + method = "smc"; > >> + cpu_off = <0x84000002>; > >> + cpu_on = <0xC4000003>; > >> + }; > > > > Back at v2 you mentioned that CPU_OFF wasn't working [1]. > > > > Do both CPU_ON and CPU_OFF work for all CPUs, including the boot CPU? > > The CPU1 ~ CPU7 are well woking about CPU_ON/OFF. > CPU0 (boot CPU) is only well working for CPU_OFF. > But when I try to turn on the CPU0 after CPU_OFF, I failed it. That's rather worrying. Can you look into what's going on here? I'd rather not have dts describing things which are known to be broken. > > I take it CPUs boot at EL2? Do the CPUs boot at EL1 or EL2? [...] > > The timer node should be moved under the root node. It doesn't live on > > the bus; it's a component of the CPU. > > OK. I'll move it according to your comment. Thanks. Mark.