Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755159AbaFQDgr (ORCPT ); Mon, 16 Jun 2014 23:36:47 -0400 Received: from mail-ve0-f172.google.com ([209.85.128.172]:58868 "EHLO mail-ve0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755082AbaFQDgo (ORCPT ); Mon, 16 Jun 2014 23:36:44 -0400 MIME-Version: 1.0 In-Reply-To: References: <1402464739-19044-1-git-send-email-tushar.b@samsung.com> <1402464739-19044-4-git-send-email-tushar.b@samsung.com> <539ED2C0.8030405@gmail.com> Date: Tue, 17 Jun 2014 09:06:43 +0530 Message-ID: Subject: Re: [PATCH 3/3] ARM: dts: Enable audio support for Peach-pi board From: Tushar Behera To: Doug Anderson Cc: "linux-kernel@vger.kernel.org" , "devicetree@vger.kernel.org" , linux-samsung-soc , "linux-arm-kernel@lists.infradead.org" , Mike Turquette , Tomasz Figa , Russell King , Kumar Gala , Ian Campbell , Mark Rutland , Pawel Moll , Rob Herring , Kukjin Kim , Kevin Hilman , Mark Brown Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 16, 2014 at 10:19 PM, Doug Anderson wrote: > Tushar, > > On Mon, Jun 16, 2014 at 4:19 AM, Tushar Behera wrote: >> On 06/13/2014 10:33 PM, Doug Anderson wrote: >>> Tushar, >>> >>> On Tue, Jun 10, 2014 at 10:32 PM, Tushar Behera wrote: >>>> Peach-pi board has MAX98090 audio codec connected on HSI2C-7 bus. >>> >>> If you want to be a stickler about it, peach-pi actually has a >>> max98091. That requires code changes to the i2c driver, though. >>> ...and unfortunately listing two compatible strings for i2c devices is >>> broken. :( >>> >> Hi Doug, >> >> You are right. I checked the boot logs, the detected codec type is >> MAX98091. Since both these CODECs are supported through a single driver >> and the detection of chip is done during runtime, I would suggest we go >> ahead with "max98090" compatible string. I will update the commit >> message accordingly. >> >> Does that sound okay to you? > > As per my understanding you shouldn't do this. You should have two patches: > > 1. Add "max98091". You could simply post Wonjoon's patch from > > > 2. Change the device tree to refer to "max98091" > > The argument that the "current kernel driver has a single driver" is > an argument that you're not supposed to make for device tree. The > same device tree is supposed to work for U-Boot, BSD, or any other > platform. On those platforms it might not be a shared driver. > My argument is that the device type is getting detected during runtime, hence there is no need to differentiate between these two. But if you prefer that way, I will repost. > >> If you so desire, I will submit a patch to sort peach-pi device-tree >> nodes (w.r.t. peach-pit dts file). > > Yes please. I think there's supposed to be some official ordering of > things. If anyone reading this has a pointer to the official sort > order of things in the device tree I'd love to see it! ;) > > -Doug -- Tushar Behera -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/