From patchwork Tue Aug 17 03:38:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jianqun Xu X-Patchwork-Id: 12440385 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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,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 88A7CC4338F for ; Tue, 17 Aug 2021 03:41:54 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 58B7860EB5 for ; Tue, 17 Aug 2021 03:41:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 58B7860EB5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=rock-chips.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=197GxKRW8dB6PaKL/HowJGY8y0Wb2ANUM6zrDMB7i4E=; b=F3V1GGQyph3XIM aHuFGGlhO3Fj44Z4bKeo3pdWbBtXXYr5to3TJdwH2C+YIEjqknA0Kh2dOVsj4QMfsF8DgQtsP/abz NFDtqcMN0SjhaugqmM8Yzq6s1MvtceVAdflSKWBYGnWFT/N8KmrMILma9/YX/qtrYObAWPOVUJWJ5 XFWyAXm7ta2VgOu4hp41B5DvN4mrDzv3QnHjSPIpJHdEWBVxEovOgAywdO+OKHR8oqK3dd8p1S+wd tfcto0FSTCa9JAgBUgZz9z6FDYPk8xtx8N+z7c5JftPmi2KdZHiwqgun05IPq/izsTqhsgLOlMBvC +qqLuGeg1UD13zjyGF/A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mFpz3-000zP2-MK; Tue, 17 Aug 2021 03:41:49 +0000 Received: from lucky1.263xmail.com ([211.157.147.133]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mFpwH-000yRC-A5 for linux-rockchip@lists.infradead.org; Tue, 17 Aug 2021 03:38:59 +0000 Received: from localhost (unknown [192.168.167.16]) by lucky1.263xmail.com (Postfix) with ESMTP id 6B237D6584; Tue, 17 Aug 2021 11:38:53 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED4: 1 X-SKE-CHECKED: 1 X-ANTISPAM-LEVEL: 2 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P26933T140041124820736S1629171530026669_; Tue, 17 Aug 2021 11:38:53 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: X-RL-SENDER: jay.xu@rock-chips.com X-SENDER: xjq@rock-chips.com X-LOGIN-NAME: jay.xu@rock-chips.com X-FST-TO: lgirdwood@gmail.com X-RCPT-COUNT: 9 X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-System-Flag: 0 From: Jianqun Xu To: lgirdwood@gmail.com, broonie@kernel.org, ulf.hansson@linaro.org, lee.jones@linaro.org, zhangchangzhong@huawei.com, heiko@sntech.de Cc: linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Jianqun Xu Subject: [PATCH v2 3/3] soc: rockchip: io-domain: do more thing about regulator notify Date: Tue, 17 Aug 2021 11:38:48 +0800 Message-Id: <20210817033848.1396749-4-jay.xu@rock-chips.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210817033848.1396749-1-jay.xu@rock-chips.com> References: <20210817033848.1396749-1-jay.xu@rock-chips.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210816_203857_725083_905FCBCF X-CRM114-Status: GOOD ( 10.84 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Do a fix to rockchip io-domain, follow this orders: * system running state -> io-domain vsel to 3.3V -> regulator_enable -> vsel change according to regulator voltage * system running state -> io-domain vsel to 3.3V -> regulator_disable Found on some Rockchip SoCs, the regulator enable or disable without care about the io-domain maybe caused soc damaged. Signed-off-by: Jianqun Xu --- v2: - use "uV = regulator_get_voltage(supply->reg);" but from notify data v1: - first version drivers/soc/rockchip/io-domain.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/soc/rockchip/io-domain.c b/drivers/soc/rockchip/io-domain.c index cf8182fc3642..3c59077fafb1 100644 --- a/drivers/soc/rockchip/io-domain.c +++ b/drivers/soc/rockchip/io-domain.c @@ -123,6 +123,12 @@ static int rockchip_iodomain_notify(struct notifier_block *nb, } else if (event & (REGULATOR_EVENT_VOLTAGE_CHANGE | REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE)) { uV = (unsigned long)data; + } else if (event & REGULATOR_EVENT_PRE_ENABLE) { + uV = MAX_VOLTAGE_3_3; + } else if (event & REGULATOR_EVENT_PRE_DISABLE) { + uV = MAX_VOLTAGE_3_3; + } else if (event & REGULATOR_EVENT_ENABLE) { + uV = regulator_get_voltage(supply->reg); } else { return NOTIFY_OK; }