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[2603:6081:7b01:cbda:15b:1704:43dd:8832]) by smtp.gmail.com with ESMTPSA id b19sm1910842qtb.64.2021.10.28.05.31.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Oct 2021 05:31:15 -0700 (PDT) Date: Thu, 28 Oct 2021 08:31:13 -0400 From: Tom Rini To: Marc Zyngier Cc: Michael Walle , u-boot@lists.denx.de, Vladimir Oltean , Hou Zhiqiang , Bharat Gooty , Rayagonda Kokatanur , Simon Glass , Priyanka Jain Subject: Re: [PATCH 0/2] arch: arm: gic-v3-its: stop abusing the device tree Message-ID: <20211028123113.GS8284@bill-the-cat> References: <20211027165454.1501398-1-michael@walle.cc> <871r45bk0h.wl-maz@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="5mQWZobUy98rde9G" Content-Disposition: inline In-Reply-To: <871r45bk0h.wl-maz@kernel.org> X-Clacks-Overhead: GNU Terry Pratchett X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean --5mQWZobUy98rde9G Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Oct 28, 2021 at 10:01:34AM +0100, Marc Zyngier wrote: > On Wed, 27 Oct 2021 17:54:52 +0100, > Michael Walle wrote: > >=20 > > Please stop throwing every ad-hoc information in the device tree. Use t= he > > official bindings (or maybe some bindings which will get approved soon). > >=20 > > On the quest of syncing the device tree used in u-boot with the one use= d in > > linux, there is this nice piece: > >=20 > > gic_lpi_base: syscon@0x80000000 { > > compatible =3D "gic-lpi-base"; > > reg =3D <0x0 0x80000000 0x0 0x100000>; > > max-gic-redistributors =3D <2>; > > }; > >=20 > > There is no offical binding for it. Also, the chances that there will be > > one are virtually zero. We need to get rid of it. In fact, most informa= tion > > there are already known or can be deduced via the offical binding. >=20 > It is not "virtually zero". It is *exactly* zero. This node only shows > that the author didn't understand the nature of the problem, nor were > they aware of the existing solution which has been around since July > 2018. This solution doesn't require any update to the binding, only to > reserve the memory. >=20 > I really wish people would stop piling crap in u-boot, and that the > u-boot maintainers would reach out to people familiar with the > architecture before merging this sort of changes. I'd be happy to reach out to people if I knew who would be receptive to spending some of their already I assume overload spare time looking in to things. If you're volunteering for "GIC related things" I'd be happy to CC you when patches come up. Thanks! --=20 Tom --5mQWZobUy98rde9G Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEGjx/cOCPqxcHgJu/FHw5/5Y0tywFAmF6mAcACgkQFHw5/5Y0 tyysZAv9Gh7FhqwAgUuzrfm/pTuG72FIeFKVl75gbYx6qzeQgyUolKdYuPEhSUBV uBP56O+6U0XKKfpNJTpgj8PzkYMJCt3SNylkq/CjHyMCfgGlgAA7aK1PRGW/DmtK dknUaNz8pwX5IQOSwhupiZHH90f8LIA/58KIzbmnknf7V3yM0tovl+8zcPgK4QiJ Bzpm/j5pxT9bX5yg3aDll4PbTjCbbSZVmFuEnZOGddRqhU0dlgzo8uG7eqHkQ03a +OiX6sw1A6aJdMytBczF6pdlvcTbhSEr0QeXOV4gOTGpAXmUsh2TYIUbY7VTJCMf ejWBT3NR94PaID2EiV8VnMJrq3TphInTPWBD28/nnFaJZKWQ01xkZP4g/60qo0rQ AMwKwBRKjcpVtPzaE43x/j8c4rMQpE79GL0XXJ8DMwzDyDHdOWX8AEpoRatsDC86 aBaL+KC+quRBfoMLAqTDY8We9O5r+bqm96JcgVqfhacjmtT40M64L/e+P0jVp4Ji QGhXVVnL =ry+O -----END PGP SIGNATURE----- --5mQWZobUy98rde9G--