From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755370AbcIKVy3 (ORCPT ); Sun, 11 Sep 2016 17:54:29 -0400 Received: from b.painless.aa.net.uk ([81.187.30.52]:36698 "EHLO b.painless.aa.net.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750912AbcIKVy0 (ORCPT ); Sun, 11 Sep 2016 17:54:26 -0400 X-Greylist: delayed 1900 seconds by postgrey-1.27 at vger.kernel.org; Sun, 11 Sep 2016 17:54:26 EDT Subject: Re: [PATCH 1/8] ARM: dts: bcm283x: Define standard pinctrl groups in the gpio node. To: Eric Anholt , Gerd Hoffmann , Stefan Wahren References: <1473244289-20728-1-git-send-email-kraxel@redhat.com> <1473244289-20728-2-git-send-email-kraxel@redhat.com> <1628308726.55593.220fafc0-57d9-4317-a72d-0875dfb2d658.open-xchange@email.1und1.de> <1473411924.6698.85.camel@redhat.com> <8737l893d2.fsf@eliezer.anholt.net> Cc: Mark Rutland , devicetree@vger.kernel.org, Florian Fainelli , Scott Branden , Ray Jui , Russell King , open list , Rob Herring , bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org From: Dave Stevenson Message-ID: <7f432ebf-78d9-9089-f79d-d0584de89887@destevenson.freeserve.co.uk> Date: Sun, 11 Sep 2016 22:22:36 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <8737l893d2.fsf@eliezer.anholt.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/09/16 22:20, Eric Anholt wrote: > e<#secure method=pgpmime mode=sign> > Gerd Hoffmann writes: > >> Hi, >> >>> According to this page [1] the pinctrl group for parallel display interface is >>> missing. Is it intended? >>> >>> [1] - http://elinux.org/RPi_BCM2835_GPIOs >> Just an oversight I guess. Eric? >> >> Does this look correct? >> >> + dpi_gpio4: dpi_gpio4 { >> + brcm,pins = <4 5 6 7 8 9 10 11 12 13 >> + 14 15 16 17 18 19 20 21 >> + 22 23 24 25 26 27>; >> + brcm,function = ; >> + }; > For DPI, you also need pins 0-3 in there for clock and syncs. > > That set of data pins would be for a 24-bit mode, which is what we > should be using for the Adafruit kippah + 7" panel combo. The Kippah is only 18bit, RGB666. https://www.adafruit.com/products/2454 "The pins used are GPIO 2 through 21 inclusive. That means you don't get the UART RX/TX pins (no console cable) and you don't get the standard user I2C pins, the EEPROM I2C pins, or hardware SPI pins. You do get to use pins #22, #23, #24, #25, #26 and #27, and the USB ports are fine to use too." On the forum there are some that report they have used DPI in RGB888, but they're not using the Kippah. I had mentioned this to Phil E that there should be a dpi18 overlay, but not got around to sorting that. > > _______________________________________________ > linux-rpi-kernel mailing list > linux-rpi-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-rpi-kernel >