Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753521AbbKXJXr (ORCPT ); Tue, 24 Nov 2015 04:23:47 -0500 Received: from eusmtp01.atmel.com ([212.144.249.243]:4047 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753345AbbKXJXo (ORCPT ); Tue, 24 Nov 2015 04:23:44 -0500 Date: Tue, 24 Nov 2015 10:23:41 +0100 From: Ludovic Desroches To: Ulf Hansson , Nicolas Ferre , Alexandre Belloni , linux-mmc , "linux-kernel@vger.kernel.org" , Jean-Christophe Plagniol-Villard , "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" Subject: Re: [PATCH 1/2] mmc: sdhci: set bus voltage before enabling bus power Message-ID: <20151124092341.GA2228@odux.rfo.atmel.com> Mail-Followup-To: Ulf Hansson , Nicolas Ferre , Alexandre Belloni , linux-mmc , "linux-kernel@vger.kernel.org" , Jean-Christophe Plagniol-Villard , "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" References: <1446825570-30029-1-git-send-email-ludovic.desroches@atmel.com> <1446825570-30029-2-git-send-email-ludovic.desroches@atmel.com> <20151109132305.GC15706@odux.rfo.atmel.com> <20151109144030.GD15706@odux.rfo.atmel.com> <20151109163026.GE15706@odux.rfo.atmel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20151109163026.GE15706@odux.rfo.atmel.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1248 Lines: 32 Hi Ulf, On Mon, Nov 09, 2015 at 05:30:26PM +0100, Ludovic Desroches wrote: > On Mon, Nov 09, 2015 at 05:00:46PM +0100, Ulf Hansson wrote: [...] > > Now, this discussion was interesting, but I forgot what problem you > > actually where trying to solve? :-) > > There is this discussion because of two things: > - Fixing something I consider as a bug: when I have a VMMC, only > setting/clearing bit 0. Our controller strictly obeys to the spec and > check the 'SD Bus Voltage Select' field. Since we put a reserved value > (000), the Power On is not performed. > - I was trying to get help to understand what is this 'SD Bus Voltage'. > For our controller and sdhci_set_power(), it seems to stand for VMMC. > For me, everything concerning bus voltage is related to VQMMC, so I was > disappointed. Do you plan to take the patch for VMMC? If yes, I will send a new patch for the device tree (I'll only add vmmc, not vqmmc as discussed); if not, forget these two patches. Regards Ludovic -- 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/