From mboxrd@z Thu Jan 1 00:00:00 1970 From: York Sun Date: Tue, 14 Jul 2015 16:16:42 -0700 Subject: [U-Boot] [PATCH 1/3] dm: dts: ls2085a: Bring in ls2085a dts files from linux kernel In-Reply-To: <20150713092826.GB19083@leverpostej> References: <1435319316-28702-1-git-send-email-haikun.wang@freescale.com> <20150713092826.GB19083@leverpostej> Message-ID: <55A5985A.2070507@freescale.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 07/13/2015 02:28 AM, Mark Rutland wrote: > On Wed, Jul 08, 2015 at 08:31:47AM +0100, Sharma Bhupesh wrote: >>> -----Original Message----- >>> From: U-Boot [mailto:u-boot-bounces at lists.denx.de] On Behalf Of Wang >>> Haikun >>> On 7/8/2015 3:13 PM, Bin Meng wrote: >>>> Hi, >>>> >>>> On Wed, Jul 8, 2015 at 2:51 PM, Wang Haikun >>> wrote: >>>>> On 6/26/2015 7:53 PM, Haikun Wang wrote: >>>>>> From: Haikun Wang >>>>>> >>>>>> Bring in required device tree files for ls2085a from Linux. >>>>>> These are initially unchanged and have a number of pieces not needed >>> by U-Boot. >>>>> Hi Simon, >>>>> >>>>> I got below comment when review this patch internal. >>>>> Please help me confirm. >>>>> >>>>> "For new platforms like ARM64, it was discussed to not duplicate the >>>>> DTS in u-boot and Linux, simply because that will break compatibility >>>>> with other bootloaders like Linaro's BootMonitor and UEFI bootloader, >>>>> which do not place the DTS in the bootloader. Also in near future, >>>>> with DTS being replaced by ACPI gradually for ARM64 platforms, it was >>>>> discussed that in a longer run it would be beneficial to move DTS out >>>>> of both u-boot and Linux and maintain it as a separate tree." >>>>> >>>> >>>> I think UEFI + ACPI is only required for ARMv8 servers, not for all >>>> ARMv8 processors. Is ls2085a a processor targeting the server market? >>> No, at least it's not our major market. >>> I want to know whether we have made a conclusion that u-boot will not add >>> Arm64 dts files? >> >> Adding Russell and Mark for their thoughts. >> >> AFAIK there were discussions to generate common DTS files for PPC and ARM platforms, >> where it was discussed that in a longer run it would be beneficial to move DTS out >> of both u-boot and Linux and maintain it as a separate tree. > > While I would like to see dts moved out of the kernel, I don't see this > happening in the short term. > > I'm not sure what the best strategy is w.r.t. U-Boot and dts. > Looks like we agree to put this dts in u-boot, at least temporarily. I am preparing to bring it in to enable SPI devices. York