From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Ball Subject: Re: [PATCH v4 06/15] mmc: sd: set current limit for uhs cards Date: Tue, 10 May 2011 23:37:12 -0400 Message-ID: References: <1304578151-1775-1-git-send-email-arindam.nath@amd.com> <1304578151-1775-7-git-send-email-arindam.nath@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from void.printf.net ([89.145.121.20]:43554 "EHLO void.printf.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754103Ab1EKDeo (ORCPT ); Tue, 10 May 2011 23:34:44 -0400 In-Reply-To: <1304578151-1775-7-git-send-email-arindam.nath@amd.com> (Arindam Nath's message of "Thu, 5 May 2011 12:19:02 +0530") Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Arindam Nath Cc: prakity@marvell.com, zhangfei.gao@gmail.com, subhashj@codeaurora.org, linux-mmc@vger.kernel.org, henry.su@amd.com, aaron.lu@amd.com, anath.amd@gmail.com Hi, On Thu, May 05 2011, Arindam Nath wrote: > We decide on the current limit to be set for the card based on the > Capability of Host Controller to provide current at 1.8V signalling, > and the maximum current limit of the card as indicated by CMD6 > mode 0. We then set the current limit for the card using CMD6 mode 1. > As per the Physical Layer Spec v3.01, the current limit switch is > only applicable for SDR50, SDR104, and DDR50 bus speed modes. For > other UHS-I modes, we set the default current limit of 200mA. > > Signed-off-by: Arindam Nath > Reviewed-by: Philip Rakity > Tested-by: Philip Rakity Thanks, pushed to mmc-next for .40. - Chris. -- Chris Ball One Laptop Per Child