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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 08E71C169C4 for ; Mon, 11 Feb 2019 16:03:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C10C1218D8 for ; Mon, 11 Feb 2019 16:03:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549901023; bh=fgJXysnpcU3d7ODoHZ+wLjwnEuj7qLwi34vj/ClCLPM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UAfFN0Ty8mL4qPY2rmC8CEHH6DopsRfomJpMnDLQkjw+wcMjmaEBNH3kLcU5gfeOC 5AwjqxBDFnM5vmq9YdgUzWHPtC/B5ESoIOmsbN3o8IENCzrVKt8pJdHhVFXXM7Hq7p YkSTTRmS126HYeIXpvLjya7f8AYfO7Xqow0Gj9w0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728849AbfBKO3P (ORCPT ); Mon, 11 Feb 2019 09:29:15 -0500 Received: from mail.kernel.org ([198.145.29.99]:35338 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727441AbfBKO3P (ORCPT ); Mon, 11 Feb 2019 09:29:15 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3AF1D20675; Mon, 11 Feb 2019 14:29:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549895354; bh=fgJXysnpcU3d7ODoHZ+wLjwnEuj7qLwi34vj/ClCLPM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QPP2NWI+qg+mO37+SJwsMjgA5Qk1coTWhEESkE/aTjUSWFZK/lD4awuPNMG5olDTQ cz/GmXwlD0A9rkz/v0wBvYEI5oBZgLbZN7JNyriTQH8vqCVGIJOH1m1dpv4B91sTZa CsMjQrIvf2zC6wJjszWKjoOt4yB4METJk609tDMQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Anson Huang , Stephen Boyd , Sasha Levin Subject: [PATCH 4.20 146/352] clk: imx6sl: ensure MMDC CH0 handshake is bypassed Date: Mon, 11 Feb 2019 15:16:13 +0100 Message-Id: <20190211141855.878181497@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190211141846.543045703@linuxfoundation.org> References: <20190211141846.543045703@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.20-stable review patch. If anyone has any objections, please let me know. ------------------ [ 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 6fcfbbd907a5..e13d8814cfa4 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 @@ -411,6 +413,10 @@ 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