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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS 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 7DF66C282CE for ; Mon, 8 Apr 2019 07:28:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4C67620870 for ; Mon, 8 Apr 2019 07:28:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726369AbfDHH2l (ORCPT ); Mon, 8 Apr 2019 03:28:41 -0400 Received: from mail-ed1-f68.google.com ([209.85.208.68]:39728 "EHLO mail-ed1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725854AbfDHH2l (ORCPT ); Mon, 8 Apr 2019 03:28:41 -0400 Received: by mail-ed1-f68.google.com with SMTP id n9so1811579edt.6; Mon, 08 Apr 2019 00:28:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=V/BKj4ipuubqegbqcSMy/c7ClQEvZu9gkbw7asMxzx4=; b=NCFuQAGjzruK9R6WwYYHNhRAmpm3+p+/N/bTTsQR+pwb69LleNfzGSG1jrhNwr5Fye nVU2f9ku/5RKIECUqOXEQA88Z9fKOa0UAPnvqLktzfqX9y1d+MAu/LZnNOJHZTe0wXJ0 ADUFsDQZfr/NE3ubrsc2T2RY7VJP77k4Tsuvl1BB85e44t7zRV2ZYCUuAeiE40kFEdis GV7ph80ayEsfUnEYfrxSV72xp3npP8kg0x9h5bLQ05FYUn8Nql590Pu7Csfub4ctH5VQ 3SkmZLryJLFR5qTzH6VSTkd1aXStKT8IpmCu5GxkbSRP4/IvQnD+rsQ7s3HC5O+NnUVM pVnA== X-Gm-Message-State: APjAAAXzP3Y8e24dAB+IJvwvEyDwXAKLmokW8uBYReSTGfXAidxy+iPn Hbz0ifaoNmIRmKdO+09pukgNGKoHHYU= X-Google-Smtp-Source: APXvYqydpCYDSq2kybwGBLnDYZUta3Avt9HPnmoeiFkeGzkXYNlNxTYq53JdHiqJiCAGoCttJIjSzg== X-Received: by 2002:a17:906:3619:: with SMTP id q25mr15648982ejb.239.1554708518502; Mon, 08 Apr 2019 00:28:38 -0700 (PDT) Received: from mail-wr1-f48.google.com (mail-wr1-f48.google.com. [209.85.221.48]) by smtp.gmail.com with ESMTPSA id s44sm5032272edd.49.2019.04.08.00.28.36 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Apr 2019 00:28:37 -0700 (PDT) Received: by mail-wr1-f48.google.com with SMTP id r4so14987023wrq.8; Mon, 08 Apr 2019 00:28:36 -0700 (PDT) X-Received: by 2002:adf:dc4a:: with SMTP id m10mr17029045wrj.0.1554708516284; Mon, 08 Apr 2019 00:28:36 -0700 (PDT) MIME-Version: 1.0 References: <20190405234514.6183-1-megous@megous.com> <20190405234514.6183-3-megous@megous.com> <20190408072338.3urcotemju3qi2un@flea> In-Reply-To: <20190408072338.3urcotemju3qi2un@flea> From: Chen-Yu Tsai Date: Mon, 8 Apr 2019 15:28:24 +0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [linux-sunxi] Re: [PATCH 02/12] drm: sun4i: Add support for enabling DDC I2C bus to dw_hdmi glue To: Maxime Ripard 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" Content-Type: text/plain; charset="UTF-8" Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org 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. ChenYu From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chen-Yu Tsai Subject: Re: [linux-sunxi] Re: [PATCH 02/12] drm: sun4i: Add support for enabling DDC I2C bus to dw_hdmi glue Date: Mon, 8 Apr 2019 15:28:24 +0800 Message-ID: References: <20190405234514.6183-1-megous@megous.com> <20190405234514.6183-3-megous@megous.com> <20190408072338.3urcotemju3qi2un@flea> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190408072338.3urcotemju3qi2un@flea> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Maxime Ripard Cc: =?UTF-8?Q?Ond=C5=99ej_Jirman?= , Mark Rutland , David Airlie , Chi-Hsien Lin , dri-devel , linux-sunxi , linux-stm32@st-md-mailman.stormreply.com, brcm80211-dev-list@cypress.com, Jose Abreu , Naveen Gupta , 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 List-Id: linux-gpio@vger.kernel.org T24gTW9uLCBBcHIgOCwgMjAxOSBhdCAzOjIzIFBNIE1heGltZSBSaXBhcmQgPG1heGltZS5yaXBh cmRAYm9vdGxpbi5jb20+IHdyb3RlOgo+Cj4gT24gU2F0LCBBcHIgMDYsIDIwMTkgYXQgMDE6NDU6 MDRBTSArMDIwMCwgbWVnb3VzQG1lZ291cy5jb20gd3JvdGU6Cj4gPiBGcm9tOiBPbmRyZWogSmly bWFuIDxtZWdvdXNAbWVnb3VzLmNvbT4KPiA+Cj4gPiBPcmFuZ2UgUGkgMyBib2FyZCByZXF1aXJl cyBlbmFibGluZyBEREMgSTJDIGJ1cyB2aWEgc29tZSBHUElPIGNvbm5lY3RlZAo+ID4gdHJhbnNp c3RvcnMsIGJlZm9yZSBpdCBjYW4gYmUgdXNlZC4gTW9kZWwgdGhpcyBhcyBhIHBvd2VyIHN1cHBs eSBmb3IgRERDCj4gPiAodmlhIHJlZ3VsYXRvciBmcmFtZXdvcmspLgo+ID4KPiA+IFNpZ25lZC1v ZmYtYnk6IE9uZHJlaiBKaXJtYW4gPG1lZ291c0BtZWdvdXMuY29tPgo+Cj4gVGhlIEREQyBidXMg aXRzZWxmIGlzIHVzdWFsbHkgYXR0YWNoZWQgdG8gdGhlIEhETUkgY29ubmVjdG9yLCBzbyBpdAo+ IHdvdWxkIG1ha2Ugc2Vuc2UgdG8gbWFrZSB0aGUgc3VwcGx5IGFsc28gYSBwcm9wZXJ0eSBvZiB0 aGUgY29ubmVjdG9yLgoKSSBiZWxpZXZlIHRoZXNlIGFyZSBzZXBhcmF0ZSB0aGluZ3MuIFdoYXQg dGhpcyBwYXRjaCBjb3ZlcnMgaXMgcG93ZXIgZm9yCmEgdm9sdGFnZSBzaGlmdGVyIGJldHdlZW4g dGhlIFNvQyBhbmQgSERNSSBEREMgcGlucy4gVGhlIEhETUkgY29ubmVjdG9yJ3MKNVYgc3VwcGx5 IHRvIHBvd2VyIHRoZSByZW1vdGUgRERDIGNoaXAgaXMgc29tZXRoaW5nIGVsc2UuIEFuZCBvbiB0 aGUKT3JhbmdlIFBpIDMgdGhleSBhcmUgaW5kZWVkIHNlcGFyYXRlIHN1cHBsaWVzLgoKQ2hlbll1 Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZl bCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xp c3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA== 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=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS 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 D8A91C282DE for ; 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[209.85.221.47]) by smtp.gmail.com with ESMTPSA id l44sm8684040edb.37.2019.04.08.00.28.36 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Apr 2019 00:28:36 -0700 (PDT) Received: by mail-wr1-f47.google.com with SMTP id y7so14963157wrn.11 for ; Mon, 08 Apr 2019 00:28:36 -0700 (PDT) X-Received: by 2002:adf:dc4a:: with SMTP id m10mr17029045wrj.0.1554708516284; Mon, 08 Apr 2019 00:28:36 -0700 (PDT) MIME-Version: 1.0 References: <20190405234514.6183-1-megous@megous.com> <20190405234514.6183-3-megous@megous.com> <20190408072338.3urcotemju3qi2un@flea> In-Reply-To: <20190408072338.3urcotemju3qi2un@flea> From: Chen-Yu Tsai Date: Mon, 8 Apr 2019 15:28:24 +0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [linux-sunxi] Re: [PATCH 02/12] drm: sun4i: Add support for enabling DDC I2C bus to dw_hdmi glue To: Maxime Ripard X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190408_002840_608405_85D258AA X-CRM114-Status: GOOD ( 12.96 ) 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: =?UTF-8?Q?Ond=C5=99ej_Jirman?= , Mark Rutland , David Airlie , Chi-Hsien Lin , dri-devel , linux-sunxi , linux-stm32@st-md-mailman.stormreply.com, brcm80211-dev-list@cypress.com, 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 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. ChenYu _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel