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[91.155.214.58]) by smtp.gmail.com with ESMTPSA id f5sm6773079lfh.84.2020.05.18.05.34.27 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Mon, 18 May 2020 05:34:28 -0700 (PDT) From: Felipe Balbi To: Linus Walleij Cc: Drew Fustini , Grygorii Strashko , =?utf-8?Q?Beno=C3=AEt?= Cousson , Tony Lindgren , Rob Herring , Linux-OMAP , "open list\:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , "linux-kernel\@vger.kernel.org" , Jason Kridner , Robert Nelson Subject: Re: [PATCH] arm: dts: am33xx-bone-common: add gpio-line-names In-Reply-To: References: <20200508165821.GA14555@x1> <875zcty7tt.fsf@kernel.org> Date: Mon, 18 May 2020 15:34:23 +0300 Message-ID: <87zha5whf4.fsf@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Linus Walleij writes: > On Mon, May 18, 2020 at 10:18 AM Felipe Balbi wrote: >> Linus Walleij writes: >> >> gpiochip0 - 32 lines: >> >> line 0: "ethernet" unused input active-high >> >> line 1: "ethernet" unused input active-high >> > >> > Why are the ethernet lines not tagged with respective signal name >> > when right below the SPI lines are explicitly tagged with >> > sclk, cs0 etc? >> > >> > Ethernet is usually RGMII and has signal names like >> > tx_clk, tx_d0, tx_en etc. >> > >> > Also some lines seem to be tagged with the pin number >> > like P9_22, P2_21 below, it seems a bit inconsistent >> > to have much information on some pins and very sketchy >> > information on some. >> >> the pin names match the beagle bone documentation and would help users >> figure out which pins on the expansion headers match to a gpio signal. > > OK if it is how it looks in the documentation I agree that is what > users need, maybe the documentation is confusing but there is not > much to do about that. the board has two expansion headers, P1 and P2: https://github.com/beagleboard/pocketbeagle/wiki/System-Reference-Manual#53= 1_Expansion_Headers Pins are always the pin number on the header, hence P2_21 and P1_10 and so on. =2D-=20 balbi --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEElLzh7wn96CXwjh2IzL64meEamQYFAl7CgM8ACgkQzL64meEa mQa02A//W7ZWqA6ND2rDES1cxSEAwXyx02mdXu96eVdXV+2Q9FXd/OJvXrWSZDGa xf0Yu7ve9EMUVbzq5kwINzMBL6nN7F2rtEtyfZkAcTFFSnedjHeWJqpqB1aKfZHs /e+iy8NIcdVmCR9SAbW2Lfm0729cCBK/jSKLqnOeZIEzDn7Cg3VPtzzGNKUWqz2R oiUq5GceYpHhOlQ+EuTDv1e5i/lr/UvQ08XWU08Mw7xQxTkdAUThM5Z0w3oi3BPo zZ3rG7teke3+yUflzUX1fh9Uoa3aJeq2msafROF45kSeYTl7GBwXDB528sLtWAai YX/f+z7LgdGd/vVNgRd+m/qv0qfnaCvDf/bJqqyI1JKRL+aYmv3j/T72ebgAw7EV LpQfP6/mA7vVvVEJ78rJMgn5nkexXvs7vV34nAZ45H+Zyp+rHUfhYFVw8MEGOBZb M4xzKfE40amu05zPkRMkVddTfjsBDpFD7biZu9aJREzi564Hnt8CQ/SUqq2fOVRw 5OQsIsSi8paC797xILnFHaM1PK/NaNqp8qKsF/dv98k1sELP1SAi9k+oJJ4KhWJ8 zdxnU9+1mbjd5AgrLac153LyaPX8z/W3TrjvvPpA9bHok2+vizWuVRDQl1dgcj16 n5OuWeutgO3DIi+iBhJtVtV1RUK7ywUHoYuZ3NM23VfFYA8bVAI= =8tVN -----END PGP SIGNATURE----- --=-=-=--