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=-2.2 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_ADSP_DISCARD,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 BAF08C10F13 for ; Mon, 8 Apr 2019 12:17:37 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 876FF2087F for ; Mon, 8 Apr 2019 12:17:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="UrWgG9Cu"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=megous.com header.i=@megous.com header.b="hs/L0DY/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 876FF2087F Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=megous.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=fDhp2VGDOKjTaYzn0bbR4DdpagphnBGbv8uvmub66dw=; b=UrWgG9CuD/8KqD 8Ou+OnWQFnQf063lvkezxMbkC7h5ovFsRhbl9shHnduK51D7lBIK/wqm+j5tr6ZJFSe5vk/qPAS1V unH1wP0JF2TABimGf9zfl4Ky1txUeQZXhkGEH9H6qnpfZV3VOWFFTyKHOZDWpRd5HvIlQ4Wlu+vG/ udITIFS7ERGvNqR2ctLJrD1sRbXMQHC7XQjdNzkgiNgavkcWCtnKnt0h3Ev+N77qmEdtwaUlKGNX2 pgRbPUiCfjieVPQZfx31iH84416VRRNhtj6HcSeizb+Kv+2QBZ9AjuCKq3Deqs8BVqvQhKnQBV2Bo BUncop48rrfm+DeqG5ig==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hDTDR-0007me-VY; Mon, 08 Apr 2019 12:17:33 +0000 Received: from vps.xff.cz ([195.181.215.36]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hDTDN-0007lx-SJ for linux-arm-kernel@lists.infradead.org; Mon, 08 Apr 2019 12:17:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megous.com; s=mail; t=1554725847; bh=9qCfRdQgJU20bNvwW0+4X2PjgfY2f043EtUF7T42qjM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=hs/L0DY/Cu2BG5a3WS+/s3gwvPUyTQngfNIPvcvhLTM88VkdK00CAizos2nZUm4Ct ZQDB1oQ4DviyJOV1VF+hxETrhuR8yGYN+vtwOXKaFHPkOb23MZZZ3FkJSmCMZ90/O3 9UGuOsbnvVDYYxa9qvu3Wz6VR5ni0VU/6p2i+VKM= Date: Mon, 8 Apr 2019 14:17:27 +0200 From: =?utf-8?Q?Ond=C5=99ej?= Jirman To: Maxime Ripard Subject: Re: [linux-sunxi] Re: [PATCH 02/12] drm: sun4i: Add support for enabling DDC I2C bus to dw_hdmi glue Message-ID: <20190408121727.4vdqdokr6w5thck6@core.my.home> Mail-Followup-To: Maxime Ripard , Chen-Yu Tsai , 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" References: <20190405234514.6183-1-megous@megous.com> <20190405234514.6183-3-megous@megous.com> <20190408072338.3urcotemju3qi2un@flea> <20190408084714.b6xdi2pxbjvzwsnu@flea> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190408084714.b6xdi2pxbjvzwsnu@flea> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190408_051730_244551_710A5A3E X-CRM114-Status: GOOD ( 16.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , David Airlie , Chi-Hsien Lin , dri-devel , linux-sunxi , linux-stm32@st-md-mailman.stormreply.com, brcm80211-dev-list@cypress.com, Chen-Yu Tsai , Jose Abreu , Naveen Gupta , Linus Walleij , devicetree , Arend van Spriel , Alexandre Torgue , Hante Meuleman , "open list:GPIO SUBSYSTEM" , Rob Herring , Wright Feng , Giuseppe Cavallaro , linux-arm-kernel , Franky Lin , Maxime Coquelin , brcm80211-dev-list.pdl@broadcom.com, netdev , linux-wireless , linux-kernel , Kalle Valo , Daniel Vetter , "David S. Miller" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Apr 08, 2019 at 10:47:14AM +0200, Maxime Ripard wrote: > 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? Interestingly &hdmi node configures the DDC bus pins via pinctrl on the SoC side, so I put this there too, because it's related to those pins. I'm not sure if that changes anything in the discussion. regards, o. > Maxime > > -- > Maxime Ripard, Bootlin > Embedded Linux and Kernel engineering > https://bootlin.com _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel