From patchwork Thu Aug 6 09:21:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiyi Lu X-Patchwork-Id: 254058 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=-11.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, MIME_BASE64_TEXT, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY,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 A6C3EC433ED for ; Thu, 6 Aug 2020 11:13:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D7D6022D05 for ; Thu, 6 Aug 2020 11:13:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="LOB/IZab" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729079AbgHFJ3P (ORCPT ); Thu, 6 Aug 2020 05:29:15 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:38463 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1729157AbgHFJXy (ORCPT ); Thu, 6 Aug 2020 05:23:54 -0400 X-UUID: cffde7ae370a4f24a6aa521c9dd52791-20200806 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=dAz5+dikMY45dDgsG5MgvToc8YR8PWJHsZfl2lLC1rs=; b=LOB/IZabiPTsKLZdckI2YeZYgnUF7ubZYCiDTvad1xcuxONCXhtNFlp1m1oxW4+xXSkixTta1hPJwUlR6RJJF7oFRw9PwY6PWGhTIJ7nqHS+3jFI1c22VJqqUm4qpS3rLsbw7Fzx5iadLySxP9s7ikEM0ij4GXLqdRr0vz1mNng=; X-UUID: cffde7ae370a4f24a6aa521c9dd52791-20200806 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 866418727; Thu, 06 Aug 2020 17:22:03 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 6 Aug 2020 17:22:00 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 6 Aug 2020 17:22:00 +0800 From: Weiyi Lu To: Enric Balletbo Serra , Matthias Brugger , Nicolas Boichat , Rob Herring , Sascha Hauer CC: James Liao , Fan Chen , , , , , , Weiyi Lu Subject: [PATCH v17 08/12] soc: mediatek: Add extra sram control Date: Thu, 6 Aug 2020 17:21:51 +0800 Message-ID: <1596705715-15320-9-git-send-email-weiyi.lu@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1596705715-15320-1-git-send-email-weiyi.lu@mediatek.com> References: <1596705715-15320-1-git-send-email-weiyi.lu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 136E1D456467830D06C2796C988E92E6E87735DDE12877E946BEB67FF3B99FB22000:8 X-MTK: N Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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 cap "MTK_SCPD_SRAM_ISO" to judge if we need to do the extra sram isolation control or not. Signed-off-by: Weiyi Lu Reviewed-by: Nicolas Boichat --- drivers/soc/mediatek/mtk-scpsys.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) -- 1.8.1.1.dirty diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c index ec62143..4587cef 100644 --- a/drivers/soc/mediatek/mtk-scpsys.c +++ b/drivers/soc/mediatek/mtk-scpsys.c @@ -26,6 +26,7 @@ #define MTK_SCPD_ACTIVE_WAKEUP BIT(0) #define MTK_SCPD_FWAIT_SRAM BIT(1) +#define MTK_SCPD_SRAM_ISO BIT(2) #define MTK_SCPD_CAPS(_scpd, _x) ((_scpd)->data->caps & (_x)) #define SPM_VDE_PWR_CON 0x0210 @@ -57,6 +58,8 @@ #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) @@ -290,6 +293,14 @@ static int scpsys_sram_enable(struct scp_domain *scpd, void __iomem *ctl_addr) return ret; } + if (MTK_SCPD_CAPS(scpd, MTK_SCPD_SRAM_ISO)) { + 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; } @@ -299,8 +310,15 @@ static int scpsys_sram_disable(struct scp_domain *scpd, void __iomem *ctl_addr) u32 pdn_ack = scpd->data->sram_pdn_ack_bits; int tmp; - val = readl(ctl_addr); - val |= scpd->data->sram_pdn_bits; + if (MTK_SCPD_CAPS(scpd, MTK_SCPD_SRAM_ISO)) { + val = readl(ctl_addr) | 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); /* Either wait until SRAM_PDN_ACK all 1 or 0 */