linux-kernel - Re: (subset) [PATCH v2 0/2] RK3588 PCIe3 support

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Message-ID: <6404573.MHq7AAxBmi@phil>
Date:   Tue, 25 Jul 2023 20:06:56 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     Sebastian Reichel <sebastian.reichel@...labora.com>
Cc:     linux-phy@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, Qu Wenruo <wqu@...e.com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Simon Xue <xxm@...k-chips.com>, linux-kernel@...r.kernel.org,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        devicetree@...r.kernel.org, Jingoo Han <jingoohan1@...il.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        linux-pci@...r.kernel.org, John Clark <inindev@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Serge Semin <fancer.lancer@...il.com>, kernel@...labora.com,
        Vinod Koul <vkoul@...nel.org>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Conor Dooley <conor+dt@...nel.org>
Subject: Re: (subset) [PATCH v2 0/2] RK3588 PCIe3 support

Am Montag, 24. Juli 2023, 21:22:23 CEST schrieb Sebastian Reichel:
> Hi Heiko,
> 
> On Mon, Jul 24, 2023 at 09:12:35PM +0200, Heiko Stuebner wrote:
> > On Mon, 17 Jul 2023 19:35:10 +0200, Sebastian Reichel wrote:
> > > This adds PCIe v3 support for RK3588. The series depends on the PCIe
> > > v2 series [0], since the the same binding is used. It has been tested
> > > on Rockchip EVB1 and Radxa Rock 5B.
> > > 
> > > Note, that the PCIe3 PHY driver is currently missing bifurcation
> > > support for RK3588. Thus after this series only PCIe3x4 is usable
> > > (in aggregated x4 mode) without adding support for the PHY's
> > > "rockchip,pcie30-phymode" DT property, which allows configuring
> > > how the lanes are distributed. Aggregated 3x4 mode seems to be the
> > > most common configuration. Both EVB1 and Rock 5B use it, so I
> > > cannot test anything else anyways.
> > > 
> > > [...]
> > 
> > Applied, thanks!
> > 
> > [2/2] arm64: dts: rockchip: rk3588: add PCIe3 support
> >       commit: 0acf4fa7f187cd7e3dad93f1ee14e9509687621e
> 
> Applying this without the PCIe 2 series being applied introduces
> warnings for the RK3588 dtbs_check, as mentioned in the second
> setence of the text you quoted :)
> 
> (FWIW RK356x already has the same warnings, though)

darn, I didn't do a full binding check, only a "compiles" check
after applying. We're at rc3 now, so I would hope that the pcie2
binding changes get applied soon'ish so I can then also pick up the
dts change from there.


Heiko