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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org > -----Original Message----- > From: Olof Johansson > Sent: Monday, September 12, 2022 2:05 AM > To: Leo Li > Cc: shawnguo@kernel.org; devicetree@vger.kernel.org; > robh+dt@kernel.org; linux-arm-kernel@lists.infradead.org; linux- > kernel@vger.kernel.org; Z.Q. Hou > Subject: Re: [PATCH v4 1/2] arm64: dts: lx2160a: update PCIe nodes to match > rev2 silicon > > Hi, > > On Wed, Aug 17, 2022 at 1:26 PM Li Yang wrote: > > > > The original dts was created based on the non-production rev1 silicon > > which was only used for evaluation. Update the PCIe nodes to align > > with the different controller used in production rev2 silicon. > > How can I confirm what version of silicon I have on a system? > > My non-evaluation commercially purchased system (HoneyComb LX2K) has: > > # cat /sys/bus/soc/devices/soc0/revision > 1.0 This is different from the information I got. If there is still active Rev1.0 system in use, I would agree that we probably need to create a new device tree for the rev2 silicon. Thanks for the information. > > And I will be really grumpy if this system stops working. It's what I use to do > all my maintainer work, even if that's been fairly dormant this year. > > It's overall setting off red flags to update an in-place devicetree to a "new > revision" of silicon instead of adding a new DT for said revision. 2160A has > been on the market for several years, so it just seems odd to all of the > sudden retroactively make things non-backwards-compatible. > > > > -Olof > > > > > -Olof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel