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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,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 6A90BC04A6B for ; Sun, 12 May 2019 10:24:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 38F242133D for ; Sun, 12 May 2019 10:24:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="L9/q0iKw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726232AbfELKYS (ORCPT ); Sun, 12 May 2019 06:24:18 -0400 Received: from mail-eopbgr80084.outbound.protection.outlook.com ([40.107.8.84]:11907 "EHLO EUR04-VI1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726274AbfELKYS (ORCPT ); Sun, 12 May 2019 06:24:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=JsHyy5VJgiWsLf0tWEzdrvTf3kLNw/sCXTHWc+VAdJQ=; b=L9/q0iKw6TSt9pIcYkhjdj2Xyr2by3Ap3h4vI9td82vKWlaQoXns3O+mLQdTWi5Or7i1XS6bf/pYUfGABqQ2N6Vdm48HmMJO7U8XNTCTHmankdq4hyB6rtHvvNr9+hp8K9ZbeEfxv75TcvTJ4DGi2gKU9P/7GClHDaQmD33Qe8w= Received: from DB3PR0402MB3916.eurprd04.prod.outlook.com (52.134.72.18) by DB3PR0402MB3675.eurprd04.prod.outlook.com (52.134.69.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1878.22; Sun, 12 May 2019 10:24:12 +0000 Received: from DB3PR0402MB3916.eurprd04.prod.outlook.com ([fe80::d035:3bd0:a56a:189d]) by DB3PR0402MB3916.eurprd04.prod.outlook.com ([fe80::d035:3bd0:a56a:189d%2]) with mapi id 15.20.1878.022; Sun, 12 May 2019 10:24:12 +0000 From: Anson Huang To: "mturquette@baylibre.com" , "sboyd@kernel.org" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "l.stach@pengutronix.de" , Aisheng Dong , "tiny.windzz@gmail.com" , "pp@emlix.com" , "colin.didier@devialet.com" , "robh@kernel.org" , Jacky Bai , Leonard Crestez , "hofrat@osadl.org" , "michael@amarulasolutions.com" , "stefan@agner.ch" , Abel Vesa , "linux-clk@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" CC: dl-linux-imx Subject: [PATCH RESEND 1/2] clk: imx: Add common API for masking MMDC handshake Thread-Topic: [PATCH RESEND 1/2] clk: imx: Add common API for masking MMDC handshake Thread-Index: AQHVCKzXj5CeLLFh1kCpP4B8xSmy8A== Date: Sun, 12 May 2019 10:24:12 +0000 Message-ID: <1557656348-13040-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0P153CA0036.APCP153.PROD.OUTLOOK.COM (2603:1096:203:17::24) To DB3PR0402MB3916.eurprd04.prod.outlook.com (2603:10a6:8:10::18) authentication-results: spf=none (sender IP is ) smtp.mailfrom=anson.huang@nxp.com; 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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: nHeNxPNSywblom9gjuTzn6EGrSM2HhQMYOlLl8OUyA/Jdv6GtBRjYuta3N/t5W/YV1vel0gmnGHC5tyvduaeaGntotk3rfcGfFmGASMm6HZVRS3/l7pDCOWoOwDV6OFIhb5wBucBjCahuEEbofk9grReKd6/jfHVpSQdayDbD0GvzP6UT6Ndz6f1o7yz1d+ILjJ0MyeDIX8pqOqmbJro9MYhjT8ByEbAiryEME+Sus5iZ4fM8K8Q4gXYAM7IXcHLb0v3WH1lDjnyygea8vQCROvvih3QsIcevKGbBpqYsHYPR/jZgYcf7yatH/Qjdthz/O3fT1G08QDnPUpcCdKawYOWU89mL5Mq7Rpk46Y4qDJAmAUK0sZYBZsFcutyh2UBHY3LbvB4FISpktVmg/HHJwEIOYv45evhu+n+sV4Wjq4= Content-Type: text/plain; charset="iso-8859-1" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 97fdc2b7-a1a7-4a0d-6bf5-08d6d6c3fa17 X-MS-Exchange-CrossTenant-originalarrivaltime: 12 May 2019 10:24:12.8153 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB3PR0402MB3675 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org All i.MX6 SoCs need to mask unused MMDC channel's handshake for low power modes, this patch provides common API for masking the MMDC channel passed from caller. Signed-off-by: Anson Huang Reviewed-by: Dong Aisheng --- No change, just resend patch with correct encoding. --- drivers/clk/imx/clk.c | 14 ++++++++++++++ drivers/clk/imx/clk.h | 1 + 2 files changed, 15 insertions(+) diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c index 1efed86..6f9bcee 100644 --- a/drivers/clk/imx/clk.c +++ b/drivers/clk/imx/clk.c @@ -6,8 +6,22 @@ #include #include "clk.h" =20 +#define CCM_CCDR 0x4 +#define CCDR_MMDC_CH0_MASK BIT(17) +#define CCDR_MMDC_CH1_MASK BIT(16) + DEFINE_SPINLOCK(imx_ccm_lock); =20 +void __init imx_mmdc_mask_handshake(void __iomem *ccm_base, + unsigned int chn) +{ + unsigned int reg; + + reg =3D readl_relaxed(ccm_base + CCM_CCDR); + reg |=3D chn =3D=3D 0 ? CCDR_MMDC_CH0_MASK : CCDR_MMDC_CH1_MASK; + writel_relaxed(reg, ccm_base + CCM_CCDR); +} + void __init imx_check_clocks(struct clk *clks[], unsigned int count) { unsigned i; diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index 8639a8f..6dcdc91 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -10,6 +10,7 @@ extern spinlock_t imx_ccm_lock; void imx_check_clocks(struct clk *clks[], unsigned int count); void imx_check_clk_hws(struct clk_hw *clks[], unsigned int count); void imx_register_uart_clocks(struct clk ** const clks[]); +void imx_mmdc_mask_handshake(void __iomem *ccm_base, unsigned int chn); =20 extern void imx_cscmr1_fixup(u32 *val); =20 --=20 2.7.4