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[189.203.103.45]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-708f6195e28sm773993a34.75.2024.07.20.10.14.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 20 Jul 2024 10:14:18 -0700 (PDT) Date: Sat, 20 Jul 2024 11:14:15 -0600 From: Tom Rini To: Andre Przywara Cc: u-boot@lists.denx.de, Jagan Teki , linux-sunxi@lists.linux.dev Subject: Re: [PATCH] sunxi: dts: arm/arm64: update devicetree files from Linux-v6.10 Message-ID: <20240720171415.GG561963@bill-the-cat> References: <20240717143415.343827-1-andre.przywara@arm.com> <20240717175153.GR561963@bill-the-cat> <191A0F66-E2AE-4D1B-ACBE-E411E135BB61@arm.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="xTSkFB0xJ5Uan9zl" Content-Disposition: inline In-Reply-To: <191A0F66-E2AE-4D1B-ACBE-E411E135BB61@arm.com> X-Clacks-Overhead: GNU Terry Pratchett --xTSkFB0xJ5Uan9zl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jul 19, 2024 at 11:21:54PM +0100, Andre Przywara wrote: > Hi Tom, > Sorry for top posting, am on the road. >=20 > First: The Allwinner drivers in U-Boot work with mainline kernel DTs for = ages, so there are no code changes required. > We manually sync the DTs from the kernel for years, but I always do one c= hange: >=20 > In kernel v5.13 the Allwinner IRQ controller (not the GIC) DT binding and= DTs changed in an incompatible way, and some critical devices now route th= eir IRQ through that controller instead of to the GIC. If an older kernel s= ees such a new DT, some critical devices fail to probe due to that, and the= kernel does not boot. Using the old DT routing fixes that, at the expense = of losing some advanced power saving features. > So in the interest of better compatibility with older kernels and $fdtco= ntroladdr (default for UEFI boot), I always kept the old way during the U-B= oot sync. This affects all devices with the popular H3, A64 and H6 SoCs, am= ong others. A20 and older or H616s are not affected. >=20 > So my plan was to migrate the latter group ASAP (after the v6.10 sync), a= nd then maybe the others in the next cycle, which means pulling the plug on= original Debian Buster kernels, for instance. 5.13 is three years old by n= ow, so I guess this might be fine now. >=20 > Does that make sense? Yes, that sounds reasonable, thanks for explaining. --=20 Tom --xTSkFB0xJ5Uan9zl Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQGyBAABCgAdFiEEGjx/cOCPqxcHgJu/FHw5/5Y0tywFAmab8GcACgkQFHw5/5Y0 tywviwv3eqNqWeeffp2JhUfw4aW60YZQZ4PtvZ7oaqtrzqVzwj82AOfY3T5ihh3F 6nw3l15O4qDDXeUY++MCMHxQ+w6Gm0sKmpk9p7B0mV7xTKsq2lp7YghVzG1Y/vzg ATYmfaw6Nw0pHXOljIrO0Fg05bUUV6OUwhqlx9/5Teahpqh4i+3FuAieZqafWITK DBBCcTsBS0S7ZDBNVEsaYwQtQqalE5HskUCktTnTU6A2CJvUWHIQ9O9IzbSsOEjg wtIuNQWbbSAvbCU3kG8BsuUKbYK8mUbLYWDx1nPHUsgrz3xMl5rRyTy2NmIiF11N 9kHz7Vsc1T+3sK4mx0B4gUBzL9zFGv8cUHfl6KrUrPNEybGKDpRynyIea327U45G QpwTeKsoB/OtpE1FUEgpFZ6M449n7iQEpcZ0hFHPf8oYUwBNOvRGbuMUltnrfRZ/ 0rNWZWEfdHQN5Pqc+cfT/GMnJHnBbEJgp3R72V5QSW0Yar0fG9eXiB3/9GTuFwhD X6pKsO4= =HQMt -----END PGP SIGNATURE----- --xTSkFB0xJ5Uan9zl--