From patchwork Tue Mar 19 08:01:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiyi Lu X-Patchwork-Id: 10858915 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 61932139A for ; Tue, 19 Mar 2019 08:02:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 42A8729334 for ; Tue, 19 Mar 2019 08:02:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 36CA2295B5; Tue, 19 Mar 2019 08:02:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id BBF5A2875C for ; Tue, 19 Mar 2019 08:02:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=B/7jS5mlvV/sQwShrU6Z4srDULsxR/OscY7Tjf0VM9E=; b=MQ+2lqicegHf1S qGUeHKFdvUo9isYYJ4vpaLIbxQWGmdci2iuPzmo1l1327KUzzY1TDIOx1F27VvuWJjMQo2bVNsQTD U18kWG0JcnlCrpAFnwA7kB2xftdz8qqBxu/d6PKx4i55OFtGFT+xkvYWtT09wLEm9d1qFEq1VMKPv +52PFHLsGrHEE6LhXnlkB1qkSIBzpdOKj1LmqG7l0nwIdcLZAx7kMcIRDq+z+GQJFzy0Gu5EmZT9/ vI27DJHyXZSI+vxm08ODhsWNLLPMkTUjGa43Y/7R29y+OVg63fZH+LbJGrvKiOlUNRl189pGfMCo8 tb4e5rGza4MDoN6gnfrw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h69hW-0007AX-NL; Tue, 19 Mar 2019 08:02:22 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h69hQ-00075f-AR; Tue, 19 Mar 2019 08:02:17 +0000 X-UUID: 8149597a4ad8421db5d597e8363a52c3-20190319 X-UUID: 8149597a4ad8421db5d597e8363a52c3-20190319 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 2019116642; Tue, 19 Mar 2019 00:02:07 -0800 Received: from mtkmbs03n2.mediatek.inc (172.21.101.182) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 19 Mar 2019 01:02:06 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs03n2.mediatek.inc (172.21.101.182) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 19 Mar 2019 16:01:58 +0800 Received: from mtkslt210.mediatek.inc (10.21.14.14) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 19 Mar 2019 16:01:58 +0800 From: Weiyi Lu To: Nicolas Boichat , Matthias Brugger , Rob Herring Subject: [PATCH v5 12/14] soc: mediatek: Add extra sram control Date: Tue, 19 Mar 2019 16:01:38 +0800 Message-ID: <20190319080140.24055-13-weiyi.lu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190319080140.24055-1-weiyi.lu@mediatek.com> References: <20190319080140.24055-1-weiyi.lu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 897C066B6B019098D4C5074FBCF737D9EC744C3E9B57BC2D5080DEF22C2C96EA2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190319_010216_369066_BFC54F4C X-CRM114-Status: GOOD ( 11.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: James Liao , Weiyi Lu , srv_heupstream@mediatek.com, linux-kernel@vger.kernel.org, Fan Chen , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP For some power domains like vpu_core on MT8183 whose sram need to do clock and internal isolation while power on/off sram. We add a flag "sram_iso_ctrl" in scp_domain_data to judge if we need to do the extra sram isolation control or not. Signed-off-by: Weiyi Lu --- drivers/soc/mediatek/mtk-scpsys.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c index 356ca2626b36..94c10f69655d 100644 --- a/drivers/soc/mediatek/mtk-scpsys.c +++ b/drivers/soc/mediatek/mtk-scpsys.c @@ -57,6 +57,8 @@ #define PWR_ON_BIT BIT(2) #define PWR_ON_2ND_BIT BIT(3) #define PWR_CLK_DIS_BIT BIT(4) +#define PWR_SRAM_CLKISO_BIT BIT(5) +#define PWR_SRAM_ISOINT_B_BIT BIT(6) #define PWR_STATUS_CONN BIT(1) #define PWR_STATUS_DISP BIT(3) @@ -115,6 +117,8 @@ static const char * const clk_names[] = { * @name: The domain name. * @sta_mask: The mask for power on/off status bit. * @ctl_offs: The offset for main power control register. + * @sram_iso_ctrl: The flag to judge if the power domain need to do + * the extra sram isolation control. * @sram_pdn_bits: The mask for sram power control bits. * @sram_pdn_ack_bits: The mask for sram power control acked bits. * @bus_prot_mask: The mask for single step bus protection. @@ -131,6 +135,7 @@ struct scp_domain_data { const char *name; u32 sta_mask; int ctl_offs; + bool sram_iso_ctrl; u32 sram_pdn_bits; u32 sram_pdn_ack_bits; u32 bus_prot_mask; @@ -273,6 +278,14 @@ static int scpsys_sram_enable(struct scp_domain *scpd, void __iomem *ctl_addr) return ret; } + if (scpd->data->sram_iso_ctrl) { + val = readl(ctl_addr) | PWR_SRAM_ISOINT_B_BIT; + writel(val, ctl_addr); + udelay(1); + val &= ~PWR_SRAM_CLKISO_BIT; + writel(val, ctl_addr); + } + return 0; } @@ -282,6 +295,15 @@ static int scpsys_sram_disable(struct scp_domain *scpd, void __iomem *ctl_addr) u32 pdn_ack = scpd->data->sram_pdn_ack_bits; int tmp; + if (scpd->data->sram_iso_ctrl) { + val = readl(ctl_addr); + val |= PWR_SRAM_CLKISO_BIT; + writel(val, ctl_addr); + val &= ~PWR_SRAM_ISOINT_B_BIT; + writel(val, ctl_addr); + udelay(1); + } + val = readl(ctl_addr) | scpd->data->sram_pdn_bits; writel(val, ctl_addr);