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[73.252.146.110]) by smtp.gmail.com with ESMTPSA id a20sm7375508pjh.46.2021.08.04.19.09.52 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Wed, 04 Aug 2021 19:09:53 -0700 (PDT) Date: Wed, 4 Aug 2021 19:09:46 -0700 From: Tao Ren To: Joel Stanley Cc: Rob Herring , Andrew Jeffery , devicetree , Linux ARM , linux-aspeed , Linux Kernel Mailing List , OpenBMC Maillist , Tao Ren Subject: Re: [PATCH 6/6] ARM: dts: aspeed: Add Facebook Fuji (AST2600) BMC Message-ID: <20210805020946.GA29371@taoren-ubuntu-R90MNF91> References: <20210728233755.17963-1-rentao.bupt@gmail.com> <20210728233755.17963-7-rentao.bupt@gmail.com> <20210805011951.GA28444@taoren-ubuntu-R90MNF91> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 05, 2021 at 01:37:29AM +0000, Joel Stanley wrote: > On Thu, 5 Aug 2021 at 01:20, Tao Ren wrote: > > > > On Thu, Aug 05, 2021 at 12:28:02AM +0000, Joel Stanley wrote: > > > On Wed, 28 Jul 2021 at 23:38, wrote: > > > > > > > > From: Tao Ren > > > > > > > > Add initial version of device tree for Facebook Fuji (AST2600) BMC. > > > > > > I like to read what kind of platform the BMC is going into if you can > > > add that detail, but it's not essential. > > > > Sure. I will add more details in v2. > > > > > > +&spi1 { > > > > + status = "okay"; > > > > + > > > > + /* > > > > + * Customize spi1 flash memory size to 32MB (maximum flash size on > > > > + * the bus) to save vmalloc space. > > > > + */ > > > > + reg = < 0x1e630000 0xc4 > > > > + 0x30000000 0x2000000 >; > > > > > > Which driver supports this? > > > > > > It would be great to see Facebook work to get the SPI NOR driver for > > > the ast2600 merged to mainline. > > > > > > I doubt the IBM team will get to this, as we are using eMMC instead. > > > > Ah, I just checked aspeed-g6.dtsi (ast2600-spi) in mainline and I thought > > the driver patches were also upstreamed. Let me remove the entry for now, > > and will add it back when the driver is ready. > > If it helps you, I don't mind it staying in your dts. I would like to > see some effort on the driver though. > > > > > > > > > > + > > > > + flash@0 { > > > > + status = "okay"; > > > > + m25p,fast-read; > > > > + label = "spi1.0"; > > > > + spi-max-frequency = <5000000>; > > > > + > > > > + partitions { > > > > + compatible = "fixed-partitions"; > > > > + #address-cells = <1>; > > > > + #size-cells = <1>; > > > > + > > > > + flash1@0 { > > > > + reg = <0x0 0x2000000>; > > > > + label = "system-flash"; > > > > + }; > > > > + }; > > > > + }; > > > > +}; > > > > > > > +&ehci1 { > > > > + status = "okay"; > > > > +}; > > > > > > Have you verified that USB works with mainline? I've had reports of it > > > working on 5.8 but it seems to have regressed as of v5.10. > > > > It stopped working on ASPEED since commit 280a9045bb18 ("ehci: fix EHCI > > host controller initialization sequence"): ehci_handshake() returns > > error because HCHalted bit EHCI24[12] stays at 1. > > > > I have a dirty hack in my tree (ignoring the halt bit) and it "works" on > > AST2500 and AST2600. Let me send an email to openbmc and aspeed email > > groups to see if anyone has more context. > > We discovered the same, except in my testing it wasn't actually > "working" on my EVB. I have a A3 EVB on my desk and when plugging in a > USB key nothing happened. We have a non-removable USB device on Fuji (AST2600) BMC and it can be enumerated successfully (after applying the hack). Let me vist the lab and plug a USB key to CMM (AST2500) BMC sometime next week. Will collect results and send out email then. > > > > > Meanwhile, should I delete the entry until the fix is ready in driver? > > Again, leave it in I think. > > > > > > > +&mdio1 { > > > > + status = "okay"; > > > > + > > > > + ethphy3: ethernet-phy@13 { > > > > + compatible = "ethernet-phy-ieee802.3-c22"; > > > > + reg = <0x0d>; > > > > + }; > > > > +}; > > > > + > > > > +&mac3 { > > > > + phy-handle = <ðphy3>; > > > > > > status = okay? > > > > > > You should specify the pinmux too I think, even if the default happens > > > to work, so that other devices cannot claim the pins. > > > > status is set in ast2600 common dtsi, but let me set it here to avoid > > confusion. Will update pinmux in v2. Thanks. > > Are you looking at mainline? I think it's disabled by default there: > > https://elixir.bootlin.com/linux/latest/source/arch/arm/boot/dts/aspeed-g6.dtsi#L246 Sorry for the confusion, Joel. I mean the device is enabled in "ast2600-facebook-netbmc-common.dtsi" (patch #3 in the series). Do we still need to set status to "okay" explicitly in platform dts (to avoid confusion)? &mac3 { status = "okay"; phy-mode = "rgmii"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_rgmii4_default>; }; > > > > > > > > > Cheers, > > > > > > Joel > > > > Cheers, > > > > Tao