From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from leonov.paulk.fr (leonov.paulk.fr [185.233.101.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B79613F8899; Mon, 18 May 2026 11:55:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.233.101.22 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779105308; cv=none; b=dPc+UphNqqKT4AUVS4CH4G40VsJDwacJAOmgWaVTrGs9Li/7Jil5j+wOz4YDvzJJ6ZJl+77Yv1Lxd8YwH6LUbemLhVArQNaNluyuzQGhC1U0mbL2ihNwHA9YAoQm5Jfv2WCwTwPAxWmxVEBGch72W3AqjmUBicreH0waJk5vEyM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779105308; c=relaxed/simple; bh=kAGzXERG5oNLhxVSrG85EZvGLqcUwrFCSavy/o5fVaQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=qSZRW2d8JyRicarRCqb7vU42HBZF9b83Y83HpvDTCjzg02XBcqYHljTVj0IBQOZanYMkSHJztAsVZgFeucPfRbwuZ94PdpjIbSsVH51mjprMOfbesQef5U6GdYD/k1mcktldhofnzJF2ooM9WHH3s8FGbYpKGo7YYBIIV0u8ZdA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sys-base.io; spf=pass smtp.mailfrom=sys-base.io; arc=none smtp.client-ip=185.233.101.22 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sys-base.io Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sys-base.io Received: from laika.paulk.fr (12.234.24.109.rev.sfr.net [109.24.234.12]) by leonov.paulk.fr (Postfix) with ESMTPS id C2BEC1F80041; Mon, 18 May 2026 11:55:02 +0000 (UTC) Received: by laika.paulk.fr (Postfix, from userid 65534) id A5850B407F5; Mon, 18 May 2026 11:55:01 +0000 (UTC) X-Spam-Level: Received: from collins (unknown [192.168.1.1]) by laika.paulk.fr (Postfix) with ESMTPSA id 10335B407F1; Mon, 18 May 2026 11:54:57 +0000 (UTC) Date: Mon, 18 May 2026 13:54:55 +0200 From: Paul Kocialkowski To: Alexander Sverdlin Cc: Andre Przywara , linux-sunxi@lists.linux.dev, Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 3/3] arm64: dts: allwinner: A133: add support for Baijie Helper A133 board Message-ID: References: <20260510201644.4143710-1-alexander.sverdlin@gmail.com> <20260510201644.4143710-4-alexander.sverdlin@gmail.com> <2306dd3c-6362-40ee-8d9f-77f89be3a502@arm.com> <14a7e289ff5ffed8fcd6dcb9b2e8455a1b2c9420.camel@gmail.com> <256b1cd8-b143-4f71-91cc-8513be04ce4c@arm.com> <6d8659f393e0bb4f0805107a17e306422982247c.camel@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="yKavoZ/1HsL3ubxV" Content-Disposition: inline In-Reply-To: <6d8659f393e0bb4f0805107a17e306422982247c.camel@gmail.com> --yKavoZ/1HsL3ubxV Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Alexander, Le Mon 18 May 26, 13:29, Alexander Sverdlin a =C3=A9crit : > Hi Andre, >=20 > On Mon, 2026-05-18 at 13:16 +0200, Andre Przywara wrote: > > > > And anyway, I see a *dual* USB-A socket on the pictures online, in > > > > addition to the USB-OTG port. So where does the third USB come from= ? The > > > > A133 only supports one host USB port plus the one OTG port. So is t= here > > > > an USB hub chip on the board? > > >=20 > > > There are two hubs, one on each usbphy. OTG side hub is even bus-powe= red, > >=20 > > What do you mean with OTG side hub, exactly? Is there a hub on USB0? Ho= w=20 > > does this work, then? >=20 > the upstream port of this hub is wired to the USB-C connector, one port h= as > CH340E USB-UART on it for the console, the other port goes to the SoC usb= phy 0. > So it would be "peripheral" only, I suppose. Yes like I explained in my other email there used to be a USB0 ID pin in earlier revisions of the board but it was reassigned and USB0 is now sitting behind the hub so it should be peripheral only. All the best, Paul --=20 Paul Kocialkowski, Independent contractor - sys-base - https://www.sys-base.io/ Free software developer - https://www.paulk.fr/ Expert in multimedia, graphics and embedded hardware support with Linux. --yKavoZ/1HsL3ubxV Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEAbcMXZQMtj1fphLChP3B6o/ulQwFAmoK/g4ACgkQhP3B6o/u lQwT1w//dOWaOoXIX7oAskSSD4md2jxdMx8mlt4NJhi+iEBVB1ygE6+YmG+Q94LB awQBs/znsdHynNvV/5p7s5+yn3KPbERnXWh/FPh3XW8BoZCAFcwsRC/mgJM+v/89 GsSlcHBXo0X8+ieoMeKizDXQpOCrOCQVtZAqW9w1/yJ5Fs5YdcOM4K11ox69nZug cNYtCIPqW6QBvRpRYDjYlqQA7L3r4aBilDeuwQ5PAaV9kkGhzjYhNyUqTdbaV1nb NoWdBq2L4UMn1SMX9sYUakANYpE1RmX07mZk/NQVRsU9Jh05lPTUUvPZlekx42cL mpV/LIAa1ektsktLQWkjRKK4+uTv80zWxumYb0ZSNUTJ6tP2B0juUeZ7dN0TNBmp aPv9rbxhD62c3KLDIKMgh9rysJrPiXejpxia+EbaNxEccwvDjKSUwYekexxKWNCp zWG/PDi4rjcvOMjleICe8P/nvB6RfOtoNDXP4Q8J8cnEHtJUBb24npppd17scOjP MQBhoREcq615+/ktmsjsf+xRbTwNTKqKjsY1qf1RUfsniWhuTjkP+5cl7EsVHHIf ChkTtyYKx2BMm5BWuoJ/lsAreGo/ti9QjcgsFWv986RhGGxRL9/g/Q3+FSj22LTA 7SN83I5GsknORm5KcJQ+bI94J3KaKy3hSJJwTQYOswZXJcmRoTg= =Wukm -----END PGP SIGNATURE----- --yKavoZ/1HsL3ubxV--