Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756113AbbLAQZA (ORCPT ); Tue, 1 Dec 2015 11:25:00 -0500 Received: from mail-gw3-out.broadcom.com ([216.31.210.64]:65214 "EHLO mail-gw3-out.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755348AbbLAQY6 (ORCPT ); Tue, 1 Dec 2015 11:24:58 -0500 X-IronPort-AV: E=Sophos;i="5.20,369,1444719600"; d="scan'208";a="81858497" From: Kapil Hali To: Rob Herring , Pawel Moll , "Mark Rutland" , Ian Campbell , Kumar Gala , "Russell King" , Ray Jui , Scott Branden , Jon Mason , Florian Fainelli CC: Gregory Fong , Lee Jones , "Hauke Mehrtens" , Kever Yang , Maxime Ripard , Olof Johansson , Paul Walmsley , Linus Walleij , Chen-Yu Tsai , , , , , Kapil Hali Subject: [PATCH v4 1/5] dt-bindings: add SMP enable-method for Broadcom NSP Date: Tue, 1 Dec 2015 11:24:05 -0500 Message-ID: <1448987049-17041-2-git-send-email-kapilh@broadcom.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1448987049-17041-1-git-send-email-kapilh@broadcom.com> References: <1448987049-17041-1-git-send-email-kapilh@broadcom.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2794 Lines: 77 Add a compatible string "brcm,bcm-nsp-smp" for Broadcom's Northstar Plus CPU to the 32-bit ARM CPU device tree binding documentation file and create a new binding documentation for Northstar Plus CPU. Signed-off-by: Kapil Hali --- .../bindings/arm/bcm/brcm,nsp-cpu-method.txt | 39 ++++++++++++++++++++++ Documentation/devicetree/bindings/arm/cpus.txt | 1 + 2 files changed, 40 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/bcm/brcm,nsp-cpu-method.txt diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,nsp-cpu-method.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,nsp-cpu-method.txt new file mode 100644 index 0000000..bf08872 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/bcm/brcm,nsp-cpu-method.txt @@ -0,0 +1,39 @@ +Broadcom Northstar Plus SoC CPU Enable Method +--------------------------------------------- +This binding defines the enable method used for starting secondary +CPUs in the following Broadcom SoCs: + BCM58522, BCM58525, BCM58535, BCM58622, BCM58623, BCM58625, BCM88312 + +The enable method is specified by defining the following required +properties in the "cpus" device tree node: + - enable-method = "brcm,bcm-nsp-smp"; + - secondary-boot-reg = <...>; + +The secondary-boot-reg property is a u32 value that specifies the +physical address of the register which should hold the common +entry point for a secondary CPU. This entry is cpu node specific +and should be added per cpu. E.g., in case of NSP (BCM58625) which +is a dual core CPU SoC, this entry should be added to cpu1 node. + + +Example: + cpus { + #address-cells = <1>; + #size-cells = <0>; + enable-method = "brcm,bcm-nsp-smp"; + + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a9"; + next-level-cache = <&L2>; + reg = <0>; + }; + + cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a9"; + next-level-cache = <&L2>; + reg = <1>; + secondary-boot-reg = <0xffff042c>; + }; + }; diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt index 3a07a87..d191554 100644 --- a/Documentation/devicetree/bindings/arm/cpus.txt +++ b/Documentation/devicetree/bindings/arm/cpus.txt @@ -190,6 +190,7 @@ nodes to be present and contain the properties described below. "allwinner,sun6i-a31" "allwinner,sun8i-a23" "arm,psci" + "brcm,bcm-nsp-smp" "brcm,brahma-b15" "marvell,armada-375-smp" "marvell,armada-380-smp" -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/