From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4579BC282C8 for ; Mon, 28 Jan 2019 17:17:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 14ECA2082E for ; Mon, 28 Jan 2019 17:17:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548695860; bh=GQQgd1h+nu0wddck8mihkJDmglqn6sJrcIm/erF9ZRE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=sE4a7BFsS7+uWFiy0ci10hgC7KwEEt++4Wc8aCdlc9WzIb4m/aM41eV0Gq3cMg47y EQ/2X/QaPeGu/ktMUc1rWtAZ1lXZ/OX3r4d6MUT1fmy8UPYKqXkznLZizpvIjBQgwI Y66Rge+/Zk+tfxSgMUeqCLsDmDYYja5/FIily4XY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731870AbfA1QFd (ORCPT ); Mon, 28 Jan 2019 11:05:33 -0500 Received: from mail.kernel.org ([198.145.29.99]:52470 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731858AbfA1QFd (ORCPT ); Mon, 28 Jan 2019 11:05:33 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 889E821919; Mon, 28 Jan 2019 16:05:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548691532; bh=GQQgd1h+nu0wddck8mihkJDmglqn6sJrcIm/erF9ZRE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZnaaqakT+BAY+WaVEQ3MAsx6oknmI69Y4opFdIs+9GawjgpGft5OWkbbP0G2Kh8hF YYla7DwPuC9nZR1CmT99Pik10AukKNsVsurLLORkRpdMl3nqm0QMD+Rk4EuNeevzI3 miQyEmhGI8s2NzqO6KxjIDZRFy1fLxXkh0jXoBIU= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anson Huang , Anson Huang , Stephen Boyd , Sasha Levin , linux-clk@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 132/258] clk: imx6sl: ensure MMDC CH0 handshake is bypassed Date: Mon, 28 Jan 2019 10:57:18 -0500 Message-Id: <20190128155924.51521-132-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128155924.51521-1-sashal@kernel.org> References: <20190128155924.51521-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org From: Anson Huang [ Upstream commit 0efcc2c0fd2001a83240a8c3d71f67770484917e ] Same as other i.MX6 SoCs, ensure unused MMDC channel's handshake is bypassed, this is to make sure no request signal will be generated when periphe_clk_sel is changed or SRC warm reset is triggered. Signed-off-by: Anson Huang Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/imx/clk-imx6sl.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/clk/imx/clk-imx6sl.c b/drivers/clk/imx/clk-imx6sl.c index eb6bcbf345a3..390e3e0ecc45 100644 --- a/drivers/clk/imx/clk-imx6sl.c +++ b/drivers/clk/imx/clk-imx6sl.c @@ -17,6 +17,8 @@ #include "clk.h" +#define CCDR 0x4 +#define BM_CCM_CCDR_MMDC_CH0_MASK (1 << 17) #define CCSR 0xc #define BM_CCSR_PLL1_SW_CLK_SEL (1 << 2) #define CACRR 0x10 @@ -409,6 +411,10 @@ static void __init imx6sl_clocks_init(struct device_node *ccm_node) clks[IMX6SL_CLK_USDHC3] = imx_clk_gate2("usdhc3", "usdhc3_podf", base + 0x80, 6); clks[IMX6SL_CLK_USDHC4] = imx_clk_gate2("usdhc4", "usdhc4_podf", base + 0x80, 8); + /* Ensure the MMDC CH0 handshake is bypassed */ + writel_relaxed(readl_relaxed(base + CCDR) | + BM_CCM_CCDR_MMDC_CH0_MASK, base + CCDR); + imx_check_clocks(clks, ARRAY_SIZE(clks)); clk_data.clks = clks; -- 2.19.1