From mboxrd@z Thu Jan 1 00:00:00 1970 From: jorge.ramirez-ortiz@linaro.org (Jorge Ramirez-Ortiz) Date: Thu, 07 May 2015 06:44:51 -0400 Subject: [PATCH v4 0/5] arm64,hi6220: Enable Hisilicon Hi6220 SoC In-Reply-To: References: <1430827599-11560-1-git-send-email-bintian.wang@huawei.com> <20150507090210.GB22115@arm.com> Message-ID: <554B4223.7080507@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 05/07/2015 05:33 AM, Haojian Zhuang wrote: > On 7 May 2015 at 17:02, Will Deacon wrote: >> Hi Bintian, >> >> On Tue, May 05, 2015 at 01:06:34PM +0100, Bintian Wang wrote: >>> Hi6220 is one mobile solution of Hisilicon, this patchset contains >>> initial support for Hi6220 SoC and HiKey development board, which >>> supports octal ARM Cortex A53 cores. Initial support is minimal and >>> includes just the arch configuration, clock driver, device tree >>> configuration. >>> >>> PSCI is enabled in device tree and there is no problem to boot all the >>> octal cores, and the CPU hotplug is also working now, you can download >>> and compile the latest firmware based on the following link to run this >>> patch set: >>> https://github.com/96boards/documentation/wiki/UEFI >>> >>> Changes v4: >>> * Rebase to kernel 4.1-rc1 >>> * Delete "arm,cortex-a15-gic" from the gic node in dts >> I gave these patches a go on top of -rc2 using the ATF and UEFI you link to >> above. >> >> The good news is that the thing booted and all the cores entered at EL2. >> Thanks! >> >> The bad news is that running hackbench quickly got the *heatsink* >> temperature to 73 degress C and rising (measured with an infrared >> thermometer). > Because you're just testing with minimum patch set. If you can choose > our release > on v3.10 & v3.18, you can observe lower temperature. Because we have thermal > framework and cpufreq driver. We're also upstreaming the thermal driver, but > it's not merged yet. the thermal driver is now on v4 (see below) https://lkml.org/lkml/2015/4/24/1 > >> So my question is, does this SoC have an automatic thermal cut out? > It's a low cost board. This feature is implemente by software. So we > need thermal > driver and cpufreq driver. > > Regards > Haojian