From patchwork Mon Dec 7 18:24:16 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 7789111 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 9565FBEEE1 for ; Mon, 7 Dec 2015 18:28:25 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C643C202E5 for ; Mon, 7 Dec 2015 18:28:24 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EA3C620553 for ; Mon, 7 Dec 2015 18:28:23 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a60UU-0005wg-3v; Mon, 07 Dec 2015 18:26:26 +0000 Received: from xavier.telenet-ops.be ([195.130.132.52]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a60T4-000327-5M for linux-arm-kernel@lists.infradead.org; Mon, 07 Dec 2015 18:25:20 +0000 Received: from ayla.of.borg ([84.195.106.123]) by xavier.telenet-ops.be with bizsmtp id qiQT1r00H2fm56U01iQTpZ; Mon, 07 Dec 2015 19:24:35 +0100 Received: from ramsan.of.borg ([192.168.97.29] helo=ramsan) by ayla.of.borg with esmtp (Exim 4.82) (envelope-from ) id 1a60SZ-00036f-1Q; Mon, 07 Dec 2015 19:24:27 +0100 Received: from geert by ramsan with local (Exim 4.82) (envelope-from ) id 1a60Sa-0004M5-OZ; Mon, 07 Dec 2015 19:24:28 +0100 From: Geert Uytterhoeven To: Simon Horman , Magnus Damm Subject: [PATCH v2 3/6] ARM: shmobile: r8a7791 dtsi: Add L2 cache-controller node Date: Mon, 7 Dec 2015 19:24:16 +0100 Message-Id: <1449512659-16688-4-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1449512659-16688-1-git-send-email-geert+renesas@glider.be> References: <1449512659-16688-1-git-send-email-geert+renesas@glider.be> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151207_102459_557300_FF4624C9 X-CRM114-Status: GOOD ( 10.41 ) X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Geert Uytterhoeven , Pawel Moll , Ian Campbell , linux-sh@vger.kernel.org, Catalin Marinas , linux-pm@vger.kernel.org, Sudeep Holla , Will Deacon , Rob Herring , linux-arm-kernel@lists.infradead.org, Kumar Gala , Lina Iyer MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a device node for the L2 cache, and link the CPU nodes to it. The L2 cache for the Cortex-A15 CPU cores is 1 MiB large (organized as 64 KiB x 16 ways), and requires the following settings: - Tag RAM latency: 3 cycles, - Data RAM latency: 4 cycles, - Data RAM setup: 0 cycles. Signed-off-by: Geert Uytterhoeven --- What are the DT bindings for a Cortex-A15 L2 cache controller? v2: - Drop (incorrect) optional cache-{size,sets,{block,line}-size} properties, as this information is auto-detected, - Integrate linking CPUs to L2 cache into this patch, - Extracted from series "[PATCH/RFC 00/15] ARM: shmobile: R-Car: Add SYSC PM Domain DT Support". --- arch/arm/boot/dts/r8a7791.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi index 1487d92e1b21a175..24e036b51647bb6f 100644 --- a/arch/arm/boot/dts/r8a7791.dtsi +++ b/arch/arm/boot/dts/r8a7791.dtsi @@ -51,6 +51,7 @@ voltage-tolerance = <1>; /* 1% */ clocks = <&cpg_clocks R8A7791_CLK_Z>; clock-latency = <300000>; /* 300 us */ + next-level-cache = <&L2_CA15>; /* kHz - uV - OPPs unknown yet */ operating-points = <1500000 1000000>, @@ -66,9 +67,18 @@ compatible = "arm,cortex-a15"; reg = <1>; clock-frequency = <1500000000>; + next-level-cache = <&L2_CA15>; }; }; + L2_CA15: cache-controller@0 { + compatible = "cache"; + arm,data-latency = <4 4 0>; + arm,tag-latency = <3 3 3>; + cache-unified; + cache-level = <2>; + }; + gic: interrupt-controller@f1001000 { compatible = "arm,gic-400"; #interrupt-cells = <3>;