From patchwork Tue Aug 20 15:45:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonard Crestez X-Patchwork-Id: 11104147 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C0AD61864 for ; Tue, 20 Aug 2019 15:47:07 +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 9E80E22CE3 for ; Tue, 20 Aug 2019 15:47:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="r/dQ2fGJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9E80E22CE3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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=I0wgOyjhGF7f/x4K1FqiG4+UbLPCafNVyqdK4SZazPc=; b=r/dQ2fGJTUPDj1h8hPJg7hRFyK qqQ2BFxPFaf6Pw4b56eNsJu1fY52wwTkHLv7n4Iq6fWX2880NAWo6R8nMav2LZVKkmiUFANBXTHL+ 3BmWFPMRz9q4n9X7ChUIdKMASc1jHkpv03eBFy/DECttmLrEDxjZGm3PYYGU7egJK3ICCW/0vLlQk p1w8+Kq8aRlu8hkQF0TyTHqW1LSn+P0zWNQi0b2pSTqKha8d0ZX1v0Rgrxg+0HH520MCMgw0wHMGi RRo1jewR4gAC+uRwMmkwTDlzk4CaOyMHPZpIc/D07YpgKd8YAYU9uht4K+nTSno9hWxyju+7ynr2q UpOKLF4Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i06Lj-0000Kk-5R; Tue, 20 Aug 2019 15:47:07 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i06K9-00079o-KA for linux-arm-kernel@lists.infradead.org; Tue, 20 Aug 2019 15:45:31 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 5882A1A0111; Tue, 20 Aug 2019 17:45:28 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 36FDA1A0100; Tue, 20 Aug 2019 17:45:28 +0200 (CEST) Received: from fsr-ub1864-112.ea.freescale.net (fsr-ub1864-112.ea.freescale.net [10.171.82.98]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 3444720612; Tue, 20 Aug 2019 17:45:27 +0200 (CEST) From: Leonard Crestez To: Stephen Boyd , Shawn Guo , MyungJoo Ham , Chanwoo Choi , Rob Herring Subject: [PATCH v2 7/7] arm64: dts: imx8mm: Add devfreq nodes Date: Tue, 20 Aug 2019 18:45:12 +0300 Message-Id: <71f9ecb1152b1860399e59aacb22c467d519b0f5.1566315740.git.leonard.crestez@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190820_084530_395241_B2738036 X-CRM114-Status: GOOD ( 10.46 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.13 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= , Abel Vesa , Saravana Kannan , Anson Huang , linux-arm-kernel@lists.infradead.org, Viresh Kumar , Michael Turquette , linux-pm@vger.kernel.org, linux-imx@nxp.com, Krzysztof Kozlowski , linux-clk@vger.kernel.org, Kyungmin Park , Alexandre Bailon , kernel@pengutronix.de, Dong Aisheng , Fabio Estevam , Georgi Djakov , devicetree@vger.kernel.org, Jacky Bai MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add initial support for bus scaling on imx8m, starting with noc and ddrc because they're the biggest power hogs. Add a devfreq-event link to the PMU in order to support on-demand scaling of ddrc based on measured dram bandwith usage. Make ddrc a parent of the NOC because all traffic to ddrc goes through Support for proactive scaling via interconnect and support for scaling additional NICs will come later. The high-performance bus masters which need that (display, vpu, gpu) are not yet enabled in upstream anyway. Signed-off-by: Leonard Crestez --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 53 ++++++++++++++++++++++- 1 file changed, 52 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 5f9d0da196e1..5474c50784c2 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -139,10 +139,38 @@ clock-latency-ns = <150000>; opp-suspend; }; }; + ddrc_opp_table: ddrc-opp-table { + compatible = "operating-points-v2"; + + opp-25M { + opp-hz = /bits/ 64 <25000000>; + }; + opp-100M { + opp-hz = /bits/ 64 <100000000>; + }; + opp-750M { + opp-hz = /bits/ 64 <750000000>; + }; + }; + + noc_opp_table: noc-opp-table { + compatible = "operating-points-v2"; + + opp-150M { + opp-hz = /bits/ 64 <150000000>; + }; + opp-375M { + opp-hz = /bits/ 64 <375000000>; + }; + opp-750M { + opp-hz = /bits/ 64 <750000000>; + }; + }; + memory@40000000 { device_type = "memory"; reg = <0x0 0x40000000 0 0x80000000>; }; @@ -773,10 +801,18 @@ status = "disabled"; }; }; + noc: noc@32700000 { + compatible = "fsl,imx8mm-noc", "fsl,imx8m-noc"; + reg = <0x32700000 0x100000>; + clocks = <&clk IMX8MM_CLK_NOC>; + devfreq = <&ddrc>; + operating-points-v2 = <&noc_opp_table>; + }; + aips4: bus@32c00000 { compatible = "fsl,aips-bus", "simple-bus"; #address-cells = <1>; #size-cells = <1>; ranges = <0x32c00000 0x32c00000 0x400000>; @@ -857,11 +893,26 @@ #interrupt-cells = <3>; interrupt-controller; interrupts = ; }; - ddr-pmu@3d800000 { + ddrc: dram-controller@3d400000 { + compatible = "fsl,imx8mm-ddrc", "fsl,imx8m-ddrc"; + reg = <0x3d400000 0x400000>; + clock-names = "dram_core", + "dram_pll", + "dram_alt", + "dram_apb"; + clocks = <&clk IMX8MM_CLK_DRAM_CORE>, + <&clk IMX8MM_DRAM_PLL>, + <&clk IMX8MM_CLK_DRAM_ALT>, + <&clk IMX8MM_CLK_DRAM_APB>; + devfreq-events = <&ddr_pmu>; + operating-points-v2 = <&ddrc_opp_table>; + }; + + ddr_pmu: ddr-pmu@3d800000 { compatible = "fsl,imx8mm-ddr-pmu", "fsl,imx8m-ddr-pmu"; reg = <0x3d800000 0x400000>; interrupt-parent = <&gic>; interrupts = ; };