From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8047AC282CE for ; Mon, 8 Apr 2019 08:47:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4818D20880 for ; Mon, 8 Apr 2019 08:47:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726627AbfDHIrY (ORCPT ); Mon, 8 Apr 2019 04:47:24 -0400 Received: from relay11.mail.gandi.net ([217.70.178.231]:50833 "EHLO relay11.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725854AbfDHIrY (ORCPT ); Mon, 8 Apr 2019 04:47:24 -0400 Received: from localhost (aaubervilliers-681-1-89-125.w90-88.abo.wanadoo.fr [90.88.30.125]) (Authenticated sender: maxime.ripard@bootlin.com) by relay11.mail.gandi.net (Postfix) with ESMTPSA id 657D610001B; Mon, 8 Apr 2019 08:47:14 +0000 (UTC) Date: Mon, 8 Apr 2019 10:47:14 +0200 From: Maxime Ripard To: Chen-Yu Tsai Cc: =?utf-8?Q?Ond=C5=99ej?= Jirman , linux-sunxi , Rob Herring , Linus Walleij , David Airlie , Daniel Vetter , Mark Rutland , Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , "David S. Miller" , Maxime Coquelin , Arend van Spriel , Franky Lin , Hante Meuleman , Chi-Hsien Lin , Wright Feng , Kalle Valo , Naveen Gupta , dri-devel , devicetree , linux-arm-kernel , linux-kernel , netdev , linux-stm32@st-md-mailman.stormreply.com, linux-wireless , brcm80211-dev-list.pdl@broadcom.com, brcm80211-dev-list@cypress.com, "open list:GPIO SUBSYSTEM" Subject: Re: [linux-sunxi] Re: [PATCH 02/12] drm: sun4i: Add support for enabling DDC I2C bus to dw_hdmi glue Message-ID: <20190408084714.b6xdi2pxbjvzwsnu@flea> References: <20190405234514.6183-1-megous@megous.com> <20190405234514.6183-3-megous@megous.com> <20190408072338.3urcotemju3qi2un@flea> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="hnppvtnr77cffabd" Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --hnppvtnr77cffabd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Apr 08, 2019 at 03:28:24PM +0800, Chen-Yu Tsai wrote: > On Mon, Apr 8, 2019 at 3:23 PM Maxime Ripard wrote: > > > > On Sat, Apr 06, 2019 at 01:45:04AM +0200, megous@megous.com wrote: > > > From: Ondrej Jirman > > > > > > Orange Pi 3 board requires enabling DDC I2C bus via some GPIO connected > > > transistors, before it can be used. Model this as a power supply for DDC > > > (via regulator framework). > > > > > > Signed-off-by: Ondrej Jirman > > > > The DDC bus itself is usually attached to the HDMI connector, so it > > would make sense to make the supply also a property of the connector. > > I believe these are separate things. What this patch covers is power for > a voltage shifter between the SoC and HDMI DDC pins. The HDMI connector's > 5V supply to power the remote DDC chip is something else. And on the > Orange Pi 3 they are indeed separate supplies. Then maybe the endpoint link between the two would be the best place to put this? Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com --hnppvtnr77cffabd Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCXKsKkgAKCRDj7w1vZxhR xWcIAP9Pddl+Ri5TuPgfHFSLxQZJkmay8uc3CPeqtO6YD/nPbgEA8130cRGdOdpG XuiFcOd3lAO7E61GKVNY99Id+JJCNwI= =P/5f -----END PGP SIGNATURE----- --hnppvtnr77cffabd--