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,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 5BF47C169C4 for ; Mon, 11 Feb 2019 15:43:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 281B7222A8 for ; Mon, 11 Feb 2019 15:43:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549899801; bh=H3C65U0+mqSQHb4iBJuqzfQolRnglP/QxzgsHmQAJn4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=H6C0qGydY+uHmLdfiW0XaQvTcZl2iAS+12TtpeW2rXYt2k4nRKBo3SIywr9ymvbCz J3+zcw5ap7VGQ/c6GnMg5dGdaVcCAZ8SmGuCjY4V/WhC1lVI0Nt9YFWiYbcWeXbT0C bFkAAzRza/gjCZKJ/fU/bhvrEbYCJfZXNiPLFZOA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387813AbfBKPnT (ORCPT ); Mon, 11 Feb 2019 10:43:19 -0500 Received: from mail.kernel.org ([198.145.29.99]:58890 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727888AbfBKOpq (ORCPT ); Mon, 11 Feb 2019 09:45:46 -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 4090A206BA; Mon, 11 Feb 2019 14:45:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549896345; bh=H3C65U0+mqSQHb4iBJuqzfQolRnglP/QxzgsHmQAJn4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hp75XCQC9RYcKLapwz7nPJgWhGvW343qsn5gQS1O6eQ2b8Ohj1Bz/+ICsCN3GQ2K9 gmLPLgAxd5IIjoQJ3R9uLEULuXjJ6osM/SOuaqpRjz4rITx9Q+bd/gEX14H6aKGqoR jPoZ5RLux57YssyQtGs9guFZVijAKy/PxHm2PQco= 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 4.19 124/313] clk: imx6sl: ensure MMDC CH0 handshake is bypassed Date: Mon, 11 Feb 2019 15:16:44 +0100 Message-Id: <20190211141902.062327232@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190211141852.749630980@linuxfoundation.org> References: <20190211141852.749630980@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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.19-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 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