From patchwork Fri Mar 7 03:44:26 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guangjie Song X-Patchwork-Id: 14005906 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 3E3B3C19F32 for ; Fri, 7 Mar 2025 04:27:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding: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=A2AxzsjD4oNDzRPVdL936OhFvrb5cy0xPDLnLQOD+j8=; b=EMOB3wfbXgfEPSseQhVJDtmQM7 4HXyVAbDZ0YrdUAHECE/0OzP+WxJ0VH4cz/k/AaUZqLuF2KUa6zT07rLI5MsISMo+LCGFQokZPz9q UtwdRwIG+XsnKuJL8ou37EUaWhQ+PAuC15wxYmhGpnIJGTxDfB5uoK0776P8y/Mgk4ZoWi2br2sHG PDJVIiyx8dnQkoXqE+LhavZ6BedT2VBal7Ahn6UP4AeZLdXSKL6xSnJ0/LlxxGz0bs7bB0Sa+9pCg hBFI68PTMrVpsFbrZi0M3po0IYDLps8bTgz5k+AJqfwzGSF9dT5AUMHp4Nq+Cdz04DLUUBm5fBcUZ KcIIQ2iw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tqPIc-0000000D76f-0yoh; Fri, 07 Mar 2025 04:27:02 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tqOe3-0000000D23N-12Bw; Fri, 07 Mar 2025 03:45:08 +0000 X-UUID: 8c51ccc6fb0611efa1e849db4cc18d44-20250306 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=A2AxzsjD4oNDzRPVdL936OhFvrb5cy0xPDLnLQOD+j8=; b=XJLLxiEdLJhjZt0rQJHyS5WfE7eZRt0AbGcKCGDfLU5xgcu4SO26YLtV7+ku45nD8nngHWYfFl53zY6LKKRWLXEJ/mozxm0463g/7+shuggyrPzcHeI8B6jEbojsWCOebHffl1g99YcRX/1gVB+UkxHCmk7EAVJl5y4gkS20T/M=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.2.1,REQID:f6a6d2d2-6ea7-4e00-926b-df9a750d4209,IP:0,UR L:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION:r elease,TS:0 X-CID-META: VersionHash:0ef645f,CLOUDID:160d08c6-16da-468a-87f7-8ca8d6b3b9f7,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:81|82|102,TC:nil,Content:0|50,EDM:-3 ,IP:nil,URL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV :0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: 8c51ccc6fb0611efa1e849db4cc18d44-20250306 Received: from mtkmbs09n1.mediatek.inc [(172.21.101.35)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 319422492; Thu, 06 Mar 2025 20:45:01 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by MTKMBS09N2.mediatek.inc (172.21.101.94) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.28; Fri, 7 Mar 2025 11:44:58 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1258.28 via Frontend Transport; Fri, 7 Mar 2025 11:44:58 +0800 From: Guangjie Song To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Ulf Hansson CC: , , , , , Guangjie Song , Subject: [PATCH 02/13] pmdomain: mediatek: Support sram low power Date: Fri, 7 Mar 2025 11:44:26 +0800 Message-ID: <20250307034454.12243-3-guangjie.song@mediatek.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20250307034454.12243-1-guangjie.song@mediatek.com> References: <20250307034454.12243-1-guangjie.song@mediatek.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250306_194507_310350_58FBC07A X-CRM114-Status: GOOD ( 13.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Support sram enter/exit low power mode. Signed-off-by: Guangjie Song --- drivers/pmdomain/mediatek/mtk-scpsys.c | 36 ++++++++++++++++++++------ 1 file changed, 28 insertions(+), 8 deletions(-) diff --git a/drivers/pmdomain/mediatek/mtk-scpsys.c b/drivers/pmdomain/mediatek/mtk-scpsys.c index d53bd07a6804..9d03249284d6 100644 --- a/drivers/pmdomain/mediatek/mtk-scpsys.c +++ b/drivers/pmdomain/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_SRAM_SLP BIT(3) #define MTK_SCPD_CAPS(_scpd, _x) ((_scpd)->data->caps & (_x)) #define SPM_VDE_PWR_CON 0x0210 @@ -118,6 +119,8 @@ static const char * const clk_names[] = { * @ctl_offs: The offset for main power control register. * @sram_pdn_bits: The mask for sram power control bits. * @sram_pdn_ack_bits: The mask for sram power control acked bits. + * @sram_slp_bits: The mask for sram low power control bits. + * @sram_slp_ack_bits: The mask for sram low power control acked bits. * @bus_prot_mask: The mask for single step bus protection. * @clk_id: The basic clocks required by this power domain. * @caps: The flag for active wake-up action. @@ -128,6 +131,8 @@ struct scp_domain_data { int ctl_offs; u32 sram_pdn_bits; u32 sram_pdn_ack_bits; + u32 sram_slp_bits; + u32 sram_slp_ack_bits; u32 bus_prot_mask; enum clk_id clk_id[MAX_CLKS]; u8 caps; @@ -236,11 +241,19 @@ static int scpsys_clk_enable(struct clk *clk[], int max_num) static int scpsys_sram_enable(struct scp_domain *scpd, void __iomem *ctl_addr) { u32 val; - u32 pdn_ack = scpd->data->sram_pdn_ack_bits; + u32 ack_mask, ack_sta; int tmp; - val = readl(ctl_addr); - val &= ~scpd->data->sram_pdn_bits; + if (MTK_SCPD_CAPS(scpd, MTK_SCPD_SRAM_SLP)) { + ack_mask = scpd->data->sram_slp_ack_bits; + ack_sta = ack_mask; + val = readl(ctl_addr) | scpd->data->sram_slp_bits; + } else { + ack_mask = scpd->data->sram_pdn_ack_bits; + ack_sta = 0; + val = readl(ctl_addr) & ~scpd->data->sram_pdn_bits; + } + writel(val, ctl_addr); /* Either wait until SRAM_PDN_ACK all 0 or have a force wait */ @@ -254,7 +267,7 @@ static int scpsys_sram_enable(struct scp_domain *scpd, void __iomem *ctl_addr) } else { /* Either wait until SRAM_PDN_ACK all 1 or 0 */ int ret = readl_poll_timeout(ctl_addr, tmp, - (tmp & pdn_ack) == 0, + (tmp & ack_mask) == ack_sta, MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); if (ret < 0) return ret; @@ -274,7 +287,7 @@ static int scpsys_sram_enable(struct scp_domain *scpd, void __iomem *ctl_addr) static int scpsys_sram_disable(struct scp_domain *scpd, void __iomem *ctl_addr) { u32 val; - u32 pdn_ack = scpd->data->sram_pdn_ack_bits; + u32 ack_mask, ack_sta; int tmp; if (MTK_SCPD_CAPS(scpd, MTK_SCPD_SRAM_ISO)) { @@ -285,13 +298,20 @@ static int scpsys_sram_disable(struct scp_domain *scpd, void __iomem *ctl_addr) udelay(1); } - val = readl(ctl_addr); - val |= scpd->data->sram_pdn_bits; + if (MTK_SCPD_CAPS(scpd, MTK_SCPD_SRAM_SLP)) { + ack_mask = scpd->data->sram_slp_ack_bits; + ack_sta = 0; + val = readl(ctl_addr) & ~scpd->data->sram_slp_bits; + } else { + ack_mask = scpd->data->sram_pdn_ack_bits; + ack_sta = ack_mask; + val = readl(ctl_addr) | scpd->data->sram_pdn_bits; + } writel(val, ctl_addr); /* Either wait until SRAM_PDN_ACK all 1 or 0 */ return readl_poll_timeout(ctl_addr, tmp, - (tmp & pdn_ack) == pdn_ack, + (tmp & ack_mask) == ack_sta, MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); }