From patchwork Tue Dec 15 20:02:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Zhou Yanjie X-Patchwork-Id: 11975687 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 C6B14C2BBCD for ; Tue, 15 Dec 2020 20:05:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 974ED22CF7 for ; Tue, 15 Dec 2020 20:05:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729427AbgLOUEP (ORCPT ); Tue, 15 Dec 2020 15:04:15 -0500 Received: from out28-220.mail.aliyun.com ([115.124.28.220]:33705 "EHLO out28-220.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727649AbgLOUEI (ORCPT ); Tue, 15 Dec 2020 15:04:08 -0500 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.09273937|-1;CH=green;DM=|CONTINUE|false|;DS=CONTINUE|ham_system_inform|0.015602-0.000445999-0.983952;FP=0|0|0|0|0|-1|-1|-1;HT=ay29a033018047193;MF=zhouyanjie@wanyeetech.com;NM=1;PH=DS;RN=13;RT=13;SR=0;TI=SMTPD_---.J7YTY-B_1608062595; Received: from localhost.localdomain(mailfrom:zhouyanjie@wanyeetech.com fp:SMTPD_---.J7YTY-B_1608062595) by smtp.aliyun-inc.com(10.147.41.187); Wed, 16 Dec 2020 04:03:25 +0800 From: =?utf-8?b?5ZGo55Cw5p2wIChaaG91IFlhbmppZSk=?= To: sboyd@kernel.org, robh+dt@kernel.org Cc: linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, mturquette@baylibre.com, dongsheng.qiu@ingenic.com, aric.pzqi@ingenic.com, rick.tyliu@ingenic.com, yanfei.li@ingenic.com, sihui.liu@ingenic.com, sernia.zhou@foxmail.com, paul@crapouillou.net Subject: [PATCH v2 1/5] clk: JZ4780: Add function for disable the second core. Date: Wed, 16 Dec 2020 04:02:48 +0800 Message-Id: <1608062572-42156-2-git-send-email-zhouyanjie@wanyeetech.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1608062572-42156-1-git-send-email-zhouyanjie@wanyeetech.com> References: <1608062572-42156-1-git-send-email-zhouyanjie@wanyeetech.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add "jz4780_core1_disable()" for disable the second core of JZ4780, prepare for later commits. Signed-off-by: 周琰杰 (Zhou Yanjie) Reviewed-by: Paul Cercueil --- Notes: v1->v2: Add Paul Cercueil's Reviewed-by. drivers/clk/ingenic/jz4780-cgu.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/clk/ingenic/jz4780-cgu.c b/drivers/clk/ingenic/jz4780-cgu.c index 0268d23..dcca74e 100644 --- a/drivers/clk/ingenic/jz4780-cgu.c +++ b/drivers/clk/ingenic/jz4780-cgu.c @@ -252,8 +252,29 @@ static int jz4780_core1_enable(struct clk_hw *hw) return 0; } +static void jz4780_core1_disable(struct clk_hw *hw) +{ + struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw); + struct ingenic_cgu *cgu = ingenic_clk->cgu; + unsigned long flags; + u32 lcr, clkgr1; + + spin_lock_irqsave(&cgu->lock, flags); + + lcr = readl(cgu->base + CGU_REG_LCR); + lcr |= LCR_PD_SCPU; + writel(lcr, cgu->base + CGU_REG_LCR); + + clkgr1 = readl(cgu->base + CGU_REG_CLKGR1); + clkgr1 |= CLKGR1_CORE1; + writel(clkgr1, cgu->base + CGU_REG_CLKGR1); + + spin_unlock_irqrestore(&cgu->lock, flags); +} + static const struct clk_ops jz4780_core1_ops = { .enable = jz4780_core1_enable, + .disable = jz4780_core1_disable, }; static const s8 pll_od_encoding[16] = {