From patchwork Mon Jan 12 09:23:05 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 5609151 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 2F7F89F357 for ; Mon, 12 Jan 2015 09:25:12 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 74AE920647 for ; Mon, 12 Jan 2015 09:25:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C992F20643 for ; Mon, 12 Jan 2015 09:25:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752008AbbALJXt (ORCPT ); Mon, 12 Jan 2015 04:23:49 -0500 Received: from mailout2.w1.samsung.com ([210.118.77.12]:32012 "EHLO mailout2.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752704AbbALJX2 (ORCPT ); Mon, 12 Jan 2015 04:23:28 -0500 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout2.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NI200EFJ4XSR290@mailout2.w1.samsung.com>; Mon, 12 Jan 2015 09:27:28 +0000 (GMT) X-AuditID: cbfec7f4-b7f126d000001e9a-49-54b3928b7975 Received: from eusync1.samsung.com ( [203.254.199.211]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id 65.B6.07834.B8293B45; Mon, 12 Jan 2015 09:23:23 +0000 (GMT) Received: from AMDC1943.digital.local ([106.116.151.171]) by eusync1.samsung.com (Oracle Communications Messaging Server 7u4-23.01(7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPA id <0NI200FPC4QTVE70@eusync1.samsung.com>; Mon, 12 Jan 2015 09:23:23 +0000 (GMT) From: Krzysztof Kozlowski To: Chris Ball , Ulf Hansson , Jaehoon Chung , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org, Kukjin Kim , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Cc: Kyungmin Park , Bartlomiej Zolnierkiewicz , Marek Szyprowski , Krzysztof Kozlowski Subject: [RFC 3/3] ARM: dts: Use frequency scaling for MSHC Date: Mon, 12 Jan 2015 10:23:05 +0100 Message-id: <1421054585-9032-4-git-send-email-k.kozlowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1421054585-9032-1-git-send-email-k.kozlowski@samsung.com> References: <1421054585-9032-1-git-send-email-k.kozlowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprOLMWRmVeSWpSXmKPExsVy+t/xy7rdkzaHGPx9Km+xccZ6VosJl7cz Wsw/co7V4savNlaL1y8MLfofv2a2ONv0ht1i0+NrrBaXd81hszjyv5/RYsb5fUwWa4/cZbc4 vjbcgddj06pONo871/aweWxeUu9x49VCJo++LasYPT5vkgtgi+KySUnNySxLLdK3S+DKeNfk WbCYrWLO/63MDYxrWbsYOTkkBEwk/izZBGWLSVy4t56ti5GLQ0hgKaPErlUbWSGcPiaJpd8u sYBUsQkYS2xevgSsSkRgC5PEqjVrwaqYBY4yStyYdZcJpEpYwFpid+cpRhCbRUBVYuv8A8wg Nq+Am8TkyTuZIPbJSZw8NhlsN6eAu8TBiT/AbCGgmqu7OpkmMPIuYGRYxSiaWppcUJyUnmuo V5yYW1yal66XnJ+7iRESmF92MC4+ZnWIUYCDUYmHd4LM5hAh1sSy4srcQ4wSHMxKIryuZUAh 3pTEyqrUovz4otKc1OJDjEwcnFINjBterpV5IimWxSVxjv3wNQVFawW+QvG15b/NWvP0hIOW tNydfWPbk2qegxvKDZNfT11s3RbzPDkyr9lx8uH0rkNu67/ev29a8anPUyp/3tfti0UbEkpq E+LZbk7YP2kDX9m9i//tLq2KSJtUtmH1/3+6s9dJ9N0rtT/O99xyCvdp6c+R109cl1ViKc5I NNRiLipOBAD+qv7UKgIAAA== Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Enable frequency scaling on MSHC to reduce energy consumption. In idle this reduced energy consumption by 1.0% (from 27.16 mA to 26.89 mA). Signed-off-by: Krzysztof Kozlowski --- arch/arm/boot/dts/exynos3250-rinato.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts index e53f62f216ba..aad09109fdbc 100644 --- a/arch/arm/boot/dts/exynos3250-rinato.dts +++ b/arch/arm/boot/dts/exynos3250-rinato.dts @@ -493,6 +493,7 @@ vmmc-supply = <&ldo12_reg>; clock-frequency = <100000000>; clock-freq-min-max = <400000 100000000>; + frequency-scaling; samsung,dw-mshc-ciu-div = <1>; samsung,dw-mshc-sdr-timing = <0 1>; samsung,dw-mshc-ddr-timing = <1 2>;