Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753937AbaBCVcO (ORCPT ); Mon, 3 Feb 2014 16:32:14 -0500 Received: from mail-qa0-f49.google.com ([209.85.216.49]:42969 "EHLO mail-qa0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753880AbaBCVcJ (ORCPT ); Mon, 3 Feb 2014 16:32:09 -0500 From: Marc Carino To: Christian Daudt , Arnd Bergmann , Olof Johansson Cc: Florian Fainelli , Matt Porter , Russell King , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Marc Carino Subject: [PATCH v6 6/8] ARM: brcmstb: add misc. DT bindings for brcmstb Date: Mon, 3 Feb 2014 13:30:39 -0800 Message-Id: <1391463041-15241-7-git-send-email-marc.ceeeee@gmail.com> X-Mailer: git-send-email 1.8.4.4 In-Reply-To: <1391463041-15241-1-git-send-email-marc.ceeeee@gmail.com> References: <1391463041-15241-1-git-send-email-marc.ceeeee@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Document the bindings that the Broadcom STB platform needs for proper bootup. Signed-off-by: Marc Carino Acked-by: Florian Fainelli --- .../devicetree/bindings/arm/brcm-brcmstb.txt | 95 ++++++++++++++++++++ 1 files changed, 95 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/brcm-brcmstb.txt diff --git a/Documentation/devicetree/bindings/arm/brcm-brcmstb.txt b/Documentation/devicetree/bindings/arm/brcm-brcmstb.txt new file mode 100644 index 0000000..3c436cc --- /dev/null +++ b/Documentation/devicetree/bindings/arm/brcm-brcmstb.txt @@ -0,0 +1,95 @@ +ARM Broadcom STB platforms Device Tree Bindings +----------------------------------------------- +Boards with Broadcom Brahma15 ARM-based BCMxxxx (generally BCM7xxx variants) +SoC shall have the following DT organization: + +Required root node properties: + - compatible: "brcm,bcm", "brcm,brcmstb" + +example: +/ { + #address-cells = <2>; + #size-cells = <2>; + model = "Broadcom STB (bcm7445)"; + compatible = "brcm,bcm7445", "brcm,brcmstb"; + +Further, syscon nodes that map platform-specific registers used for general +system control is required: + + - compatible: "brcm,bcm-sun-top-ctrl", "syscon" + - compatible: "brcm,bcm-hif-cpubiuctrl", "syscon" + - compatible: "brcm,bcm-hif-continuation", "syscon" + +example: + rdb { + #address-cells = <1>; + #size-cells = <1>; + compatible = "simple-bus"; + ranges = <0 0x00 0xf0000000 0x1000000>; + + sun_top_ctrl: syscon@404000 { + compatible = "brcm,bcm7445-sun-top-ctrl", "syscon"; + reg = <0x404000 0x51c>; + }; + + hif_cpubiuctrl: syscon@3e2400 { + compatible = "brcm,bcm7445-hif-cpubiuctrl", "syscon"; + reg = <0x3e2400 0x5b4>; + }; + + hif_continuation: syscon@452000 { + compatible = "brcm,bcm7445-hif-continuation", "syscon"; + reg = <0x452000 0x100>; + }; + }; + +Lastly, nodes that allow for support of SMP initialization and reboot are +required: + +smpboot +------- +Required properties: + + - compatible + The string "brcm,brcmstb-smpboot". + + - syscon-cpu + A phandle / integer array property which lets the BSP know the location + of certain CPU power-on registers. + + The layout of the property is as follows: + o a phandle to the "hif_cpubiuctrl" syscon node + o offset to the base CPU power zone register + o offset to the base CPU reset register + + - syscon-cont + A phandle pointing to the syscon node which describes the CPU boot + continuation registers. + o a phandle to the "hif_continuation" syscon node + +example: + smpboot { + compatible = "brcm,brcmstb-smpboot"; + syscon-cpu = <&hif_cpubiuctrl 0x88 0x178>; + syscon-cont = <&hif_continuation>; + }; + +reboot +------- +Required properties + + - compatible + The string property "brcm,brcmstb-reboot". + + - syscon + A phandle / integer array that points to the syscon node which describes + the general system reset registers. + o a phandle to "sun_top_ctrl" + o offset to the "reset source enable" register + o offset to the "software master reset" register + +example: + reboot { + compatible = "brcm,brcmstb-reboot"; + syscon = <&sun_top_ctrl 0x304 0x308>; + }; -- 1.7.1 -- 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/