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[86.58.12.36]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c504a591485sm127282366b.32.2026.11.10.08.11.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Nov 2026 08:11:13 -0800 (PST) From: Jernej =?UTF-8?B?xaBrcmFiZWM=?= To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Samuel Holland , Ryan Walklin , Andre Przywara , aiyengar1990@gmail.com Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Arun Iyengar Subject: Re: [PATCH 8/8] arm64: dts: allwinner: orangepi-zero2: Add i2c aliases Date: Tue, 10 Nov 2026 17:11:12 +0100 Message-ID: In-Reply-To: <20261110-h616-zero2-dt-v1-8-05506d760f21@gmail.com> References: <20261110-h616-zero2-dt-v1-0-05506d760f21@gmail.com> <20261110-h616-zero2-dt-v1-8-05506d760f21@gmail.com> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261110_081116_948576_BB87F0F8 X-CRM114-Status: GOOD ( 18.61 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Dne torek, 10. november 2026 ob 06:37:02 Srednjeevropski standardni =C4=8Da= s je Arun Iyengar via B4 Relay napisal(a): > From: Arun Iyengar >=20 > The I2C core numbers adapters after the "i2cN" aliases and hands out > dynamic numbers, in probe order, to adapters without one. The Orange Pi > Zero2 DT has no i2c aliases, so a TWI controller enabled by an overlay > for the header pins gets whatever number is free when it probes: TWI3 > on header pins 3 and 5 does not show up as /dev/i2c-3, and the number > changes with the set of enabled buses. The vendor manual and the > vendor BSP name the buses after the controller. >=20 > Pin the numbering as the vendor BSP does: i2c0 to i2c4 are TWI0 to > TWI4, i2c5 is R_TWI. Disabled controllers get no adapter, so nothing > changes for buses that stay off. >=20 > Signed-off-by: Arun Iyengar NAK.=20 Extension connector is not covered by board DT. Use overlays if you want to use them. Best regards, Jernej > --- > arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts | 9 +++++++= ++ > 1 file changed, 9 insertions(+) >=20 > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts= b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts > index d5d39bac5915..98fc83291dc8 100644 > --- a/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts > +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616-orangepi-zero2.dts > @@ -12,6 +12,15 @@ > / { > model =3D "OrangePi Zero2"; > compatible =3D "xunlong,orangepi-zero2", "allwinner,sun50i-h616"; > + > + aliases { > + i2c0 =3D &i2c0; > + i2c1 =3D &i2c1; > + i2c2 =3D &i2c2; > + i2c3 =3D &i2c3; > + i2c4 =3D &i2c4; > + i2c5 =3D &r_i2c; > + }; > }; > =20 > &cpu0 { >=20 >=20