From patchwork Fri May 30 22:28:52 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Elder X-Patchwork-Id: 4274421 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id E937FBEEA7 for ; Fri, 30 May 2014 22:32:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8F6482038F for ; Fri, 30 May 2014 22:32:46 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B345F20303 for ; Fri, 30 May 2014 22:32:45 +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 1WqVIr-0000Uo-P5; Fri, 30 May 2014 22:29:33 +0000 Received: from mail-ig0-f174.google.com ([209.85.213.174]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WqVIh-0000PL-64 for linux-arm-kernel@lists.infradead.org; Fri, 30 May 2014 22:29:23 +0000 Received: by mail-ig0-f174.google.com with SMTP id h3so1375917igd.13 for ; Fri, 30 May 2014 15:29:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=nNrcWUxU0HsL95yM4Dp1lksCS7xHSBXnyxN+QxCAP8g=; b=g1bBNsH5n5xbugK6fBGK2t+TE0eTvdINiZmSr5TTAOoboYJvXdAAN374jsHPGu82op G/Jnk3gHJBl5Gz5tpqHGfN5GWFO67D0rth6rJO4KwxLqZdUuFvoAI/nragb1JxeC1p2L ydGWOlFySYprTFZIaJbPDO8XHSQvZG+dXPvF6LxJxHRdaC9a/lB4/Fk7nx+Gz/vDqSkf /o59CKl3Dw7mBA9o9E2Xju6VRMPW0jMOCmANfJ3chel0CxrU1nu5pH3TlZ+N8sigltYN vO4TLsw4O3uelRSbTrwROVxDBnOyW5ZsayYjn91xB9WoKZZjfyKyS4lFRTv43ek17PAo MClw== X-Gm-Message-State: ALoCoQnudWkAOGsflwOYqgi+TRqxzTfWklThTeDYrpdueOuPRKrodkHZqh2u+F6jAY7qDQB/FE+2 X-Received: by 10.43.74.198 with SMTP id yx6mr18911907icb.40.1401488941010; Fri, 30 May 2014 15:29:01 -0700 (PDT) Received: from localhost.localdomain (c-71-195-31-37.hsd1.mn.comcast.net. [71.195.31.37]) by mx.google.com with ESMTPSA id qh3sm8567496igb.17.2014.05.30.15.28.59 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 30 May 2014 15:29:00 -0700 (PDT) From: Alex Elder To: mporter@linaro.org, bcm@fixthebug.org, linux@arm.linux.org.uk, devicetree@vger.kernel.org, arnd@arndb.de, sboyd@codeaurora.org Subject: [PATCH v4 RESEND 1/5] devicetree: bindings: document Broadcom CPU enable method Date: Fri, 30 May 2014 17:28:52 -0500 Message-Id: <1401488936-21186-2-git-send-email-elder@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1401488936-21186-1-git-send-email-elder@linaro.org> References: <1401488936-21186-1-git-send-email-elder@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140530_152923_263791_EFBC980A X-CRM114-Status: GOOD ( 10.59 ) X-Spam-Score: -0.7 (/) Cc: mark.rutland@arm.com, lorenzo.pieralisi@arm.com, jason@lakedaemon.net, pawel.moll@arm.com, ijc+devicetree@hellion.org.uk, rjui@broadcom.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, rvaswani@codeaurora.org, robh+dt@kernel.org, bcm-kernel-feedback-list@broadcom.com, rdunlap@infradead.org, galak@codeaurora.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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=-2.5 required=5.0 tests=BAYES_00,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 Broadcom mobile SoCs use a ROM-implemented holding pen for controlled boot of secondary cores. A special register is used to communicate to the ROM that a secondary core should start executing kernel code. This enable method is currently used for members of the bcm281xx and bcm21664 SoC families. The use of an enable method also allows the SMP operation vector to be assigned as a result of device tree content for these SoCs. Signed-off-by: Alex Elder --- Documentation/devicetree/bindings/arm/cpus.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt index 333f4ae..c6a2411 100644 --- a/Documentation/devicetree/bindings/arm/cpus.txt +++ b/Documentation/devicetree/bindings/arm/cpus.txt @@ -185,6 +185,7 @@ nodes to be present and contain the properties described below. "qcom,gcc-msm8660" "qcom,kpss-acc-v1" "qcom,kpss-acc-v2" + "brcm,bcm11351-cpu-method" - cpu-release-addr Usage: required for systems that have an "enable-method" @@ -209,6 +210,17 @@ nodes to be present and contain the properties described below. Value type: Definition: Specifies the ACC[2] node associated with this CPU. + - secondary-boot-reg + Usage: + Required for systems that have an "enable-method" + property value of "brcm,bcm11351-cpu-method". + Value type: + Definition: + Specifies the physical address of the register used to + request the ROM holding pen code release a secondary + CPU. The value written to the register is formed by + encoding the target CPU id into the low bits of the + physical start address it should jump to. Example 1 (dual-cluster big.LITTLE system 32-bit):