From patchwork Fri Feb 28 16:37:18 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 3742701 Return-Path: X-Original-To: patchwork-dmaengine@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id D48A0BF13A for ; Fri, 28 Feb 2014 16:41:15 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0B60B20225 for ; Fri, 28 Feb 2014 16:41:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3008820259 for ; Fri, 28 Feb 2014 16:41:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752827AbaB1QkL (ORCPT ); Fri, 28 Feb 2014 11:40:11 -0500 Received: from top.free-electrons.com ([176.31.233.9]:52976 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752558AbaB1QkI (ORCPT ); Fri, 28 Feb 2014 11:40:08 -0500 Received: by mail.free-electrons.com (Postfix, from userid 106) id B80F2F02; Fri, 28 Feb 2014 17:40:08 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Status: No, score=-3.8 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from localhost (189.58.26.109.rev.sfr.net [109.26.58.189]) by mail.free-electrons.com (Postfix) with ESMTPSA id 8547C7B4; Fri, 28 Feb 2014 17:40:08 +0100 (CET) From: Maxime Ripard To: Emilio Lopez , Dan Williams , Vinod Koul Cc: Mike Turquette , linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-sunxi@googlegroups.com, kevin.z.m.zh@gmail.com, sunny@allwinnertech.com, shuge@allwinnertech.com, zhuzhenhua@allwinnertech.com, Maxime Ripard Subject: [PATCH v2 3/5] clk: sun6i: Protect SDRAM gating bit Date: Fri, 28 Feb 2014 17:37:18 +0100 Message-Id: <1393605440-14643-4-git-send-email-maxime.ripard@free-electrons.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1393605440-14643-1-git-send-email-maxime.ripard@free-electrons.com> References: <1393605440-14643-1-git-send-email-maxime.ripard@free-electrons.com> Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Spam-Level: * X-Virus-Scanned: ClamAV using ClamSMTP Prevent the SDRAM controller from being gated by force-enabling it in the clock driver. Signed-off-by: Maxime Ripard --- drivers/clk/sunxi/clk-sunxi.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c index a5c5882..bbbc5c0 100644 --- a/drivers/clk/sunxi/clk-sunxi.c +++ b/drivers/clk/sunxi/clk-sunxi.c @@ -1302,6 +1302,11 @@ static void __init sunxi_clock_protect(void) clk_put(clk); } + /* DDR Gating clock - sun6i */ + clk = clk_get(NULL, "ahb1_sdram"); + if (!IS_ERR(clk)) + clk_prepare_enable(clk); + /* CPU clocks - sun6i */ clk = clk_get(NULL, "cpu"); if (!IS_ERR(clk))