Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp1317518ybl;
        Fri, 16 Aug 2019 12:44:22 -0700 (PDT)
X-Google-Smtp-Source: APXvYqybl3AgJkUtKyROOQPnd4T8mqoVtoyuMBwbjA0vzq8vAfnGH0KANH/K+f1CCftMnWRyKJLu
X-Received: by 2002:a63:f812:: with SMTP id n18mr8952215pgh.185.1565984662639;
        Fri, 16 Aug 2019 12:44:22 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; t=1565984662; cv=none;
        d=google.com; s=arc-20160816;
        b=Rcd3MSXomSpRbbRY/MvRMaKqkQ+t8RjTx0KFdOzXIlcX5B+zT71KZM28aAP+BsvnBY
         OIWEe3n1OW1TIzKZn+u8efG9NcmXp7ndYOk0GOjcJxwvKUMmdNxBjXGcHE5cH/fdNu5T
         7rIVquMpyM+SJFGjogCZhlTDDoiUnnHXETfiArVYZ1UwNhY4X2MGh0foTXS1v4q4etrv
         aJY4py4h70mqhvl30bAp03rtb22+eCsLOBGi5YRzny3YtJ92f5E8ZA5suqsx7+/c/JOh
         SjIwEqjxXWU+CKuM0MxhkRkOMxAuMBj8XLRizkactMgaJnogbYlg2aTz14R6OBuleWKk
         sO9Q==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=list-id:precedence:sender:dkim-signature:mime-version:references
         :in-reply-to:message-id:date:subject:cc:to:from;
        bh=BCWgz2Jicsg4VgpsyZJFNN6F+CHauW+dNANtrXqC+5Y=;
        b=pyQKPfMablATdz6wNJrOMJgFCsLCf3Fd+hBKIJLEYeOouE/xEAZS+llAILogc5coA8
         /Hq9+iaxvY+LgntM+klRshi4j4+dcEM0OVQxqjmgSLNnIAT6WrQ0ajbYWiWQ8vrp4bxj
         8pQHUlLFGzzKXwwnyNnKD8rsGmPNX7tdtEGbJnvKxdPSiMMmRBF+d1WDekmgX272Seyf
         cf/MHOUvfxCcYedgWtQR5/RtdAyUrdF6a1VYCqS6AGLEwFz4SBlwl//EWHD4XpzM5shm
         Mn34NukWiLcTtI7rpXHhFyVLcJOztr73mngdZhXkUZdL00sc/l2P2KsS6Wu7E8yCsNqt
         CGrw==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@nvidia.com header.s=n1 header.b="Oic2Yry/";
       spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org;
       dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nvidia.com
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67])
        by mx.google.com with ESMTP id u19si4445612pgf.531.2019.08.16.12.44.07;
        Fri, 16 Aug 2019 12:44:22 -0700 (PDT)
Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Authentication-Results: mx.google.com;
       dkim=pass header.i=@nvidia.com header.s=n1 header.b="Oic2Yry/";
       spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org;
       dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=nvidia.com
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1727919AbfHPTnJ (ORCPT <rfc822;vinadhy@gmail.com> + 99 others);
        Fri, 16 Aug 2019 15:43:09 -0400
Received: from hqemgate16.nvidia.com ([216.228.121.65]:13336 "EHLO
        hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1727900AbfHPTnH (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Fri, 16 Aug 2019 15:43:07 -0400
Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA)
        id <B5d57074d0000>; Fri, 16 Aug 2019 12:43:09 -0700
Received: from hqmail.nvidia.com ([172.20.161.6])
  by hqpgpgate101.nvidia.com (PGP Universal service);
  Fri, 16 Aug 2019 12:43:06 -0700
X-PGP-Universal: processed;
        by hqpgpgate101.nvidia.com on Fri, 16 Aug 2019 12:43:06 -0700
Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL107.nvidia.com
 (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 16 Aug
 2019 19:43:06 +0000
Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL109.nvidia.com
 (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 16 Aug
 2019 19:43:06 +0000
Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL101.nvidia.com
 (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend
 Transport; Fri, 16 Aug 2019 19:43:06 +0000
Received: from skomatineni-linux.nvidia.com (Not Verified[10.2.166.126]) by hqnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121)
        id <B5d5707480000>; Fri, 16 Aug 2019 12:43:05 -0700
From:   Sowjanya Komatineni <skomatineni@nvidia.com>
To:     <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
        <tglx@linutronix.de>, <jason@lakedaemon.net>,
        <marc.zyngier@arm.com>, <linus.walleij@linaro.org>,
        <stefan@agner.ch>, <mark.rutland@arm.com>
CC:     <pdeschrijver@nvidia.com>, <pgaikwad@nvidia.com>,
        <sboyd@kernel.org>, <linux-clk@vger.kernel.org>,
        <linux-gpio@vger.kernel.org>, <jckuo@nvidia.com>,
        <josephl@nvidia.com>, <talho@nvidia.com>, <skomatineni@nvidia.com>,
        <linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <mperttunen@nvidia.com>, <spatra@nvidia.com>, <robh+dt@kernel.org>,
        <digetx@gmail.com>, <devicetree@vger.kernel.org>,
        <rjw@rjwysocki.net>, <viresh.kumar@linaro.org>,
        <linux-pm@vger.kernel.org>
Subject: [PATCH v9 19/22] soc/tegra: pmc: Configure core power request polarity
Date:   Fri, 16 Aug 2019 12:42:04 -0700
Message-ID: <1565984527-5272-20-git-send-email-skomatineni@nvidia.com>
X-Mailer: git-send-email 2.7.4
In-Reply-To: <1565984527-5272-1-git-send-email-skomatineni@nvidia.com>
References: <1565984527-5272-1-git-send-email-skomatineni@nvidia.com>
X-NVConfidentiality: public
MIME-Version: 1.0
Content-Type: text/plain
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1;
        t=1565984589; bh=BCWgz2Jicsg4VgpsyZJFNN6F+CHauW+dNANtrXqC+5Y=;
        h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer:
         In-Reply-To:References:X-NVConfidentiality:MIME-Version:
         Content-Type;
        b=Oic2Yry/pTEEI/AJvEI3DIhDQB6yhBvyptPtetdgyE761LR117pRkDVvdjlI3wBy9
         gcdFMjnVRahumLnjrJ5pZatNCawIbBRO1ZdIly+xGHKTbtuzwHyTVEFLaDCaOOX7ro
         zQ2DNidahBlQp7cDQYd+sCciqUaR+tTB5FehJSQyN6J0i0MK6HqtMNaDjh7+zMEcpc
         BesBX7GPg5XG9UotoWdrHYL3kiXasPNQ8hN3QZVG0SSXPMdX20bWI2rc/yY+9/r5k9
         j+m6tnNwy1M4AOrtKLy4Htt6U59+rD2xdGGizfgypTbylSZaDyiW5XOUVt8U7SaxIV
         CDi3JmOVN1ksQ==
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

This patch configures polarity of the core power request signal
in PMC control register based on the device tree property.

PMC asserts and de-asserts power request signal based on it polarity
when it need to power-up and power-down the core rail during SC7.

Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
 drivers/soc/tegra/pmc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index 76e7292ded25..53ed70773872 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -56,6 +56,7 @@
 #define  PMC_CNTRL_SIDE_EFFECT_LP0	BIT(14) /* LP0 when CPU pwr gated */
 #define  PMC_CNTRL_SYSCLK_OE		BIT(11) /* system clock enable */
 #define  PMC_CNTRL_SYSCLK_POLARITY	BIT(10) /* sys clk polarity */
+#define  PMC_CNTRL_PWRREQ_POLARITY	BIT(8)
 #define  PMC_CNTRL_MAIN_RST		BIT(4)
 
 #define PMC_WAKE_MASK			0x0c
@@ -2290,6 +2291,11 @@ static void tegra20_pmc_init(struct tegra_pmc *pmc)
 	else
 		value |= PMC_CNTRL_SYSCLK_POLARITY;
 
+	if (pmc->corereq_high)
+		value &= ~PMC_CNTRL_PWRREQ_POLARITY;
+	else
+		value |= PMC_CNTRL_PWRREQ_POLARITY;
+
 	/* configure the output polarity while the request is tristated */
 	tegra_pmc_writel(pmc, value, PMC_CNTRL);
 
-- 
2.7.4