From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Elwell Subject: [PATCH v3 2/4] dt: bindings: Add bindings for bcm2835-aux-intc Date: Wed, 14 Jun 2017 17:29:08 +0100 Message-ID: <1497457750-35585-3-git-send-email-phil@raspberrypi.org> References: <4ceb6c92-f752-180e-6a6e-a94dcd120737@raspberrypi.org> <1497457750-35585-1-git-send-email-phil@raspberrypi.org> Return-path: In-Reply-To: <1497457750-35585-1-git-send-email-phil@raspberrypi.org> Sender: linux-clk-owner@vger.kernel.org To: Thomas Gleixner , Jason Cooper , Marc Zyngier , Rob Herring , Mark Rutland , Florian Fainelli , Stefan Wahren , Eric Anholt , Russell King , Michael Turquette , Stephen Boyd , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-clk@vger.kernel.org Cc: Phil Elwell List-Id: devicetree@vger.kernel.org Add bindings documentation for brcm,bcm2835-aux-intc and human-readable declarations for the BCM2835 AUX IRQs. Signed-off-by: Phil Elwell Reviewed-by: Florian Fainelli --- .../interrupt-controller/brcm,bcm2835-aux-intc.txt | 27 ++++++++++++++++++++++ .../interrupt-controller/bcm2835-aux-intc.h | 20 ++++++++++++++++ 2 files changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2835-aux-intc.txt create mode 100644 include/dt-bindings/interrupt-controller/bcm2835-aux-intc.h diff --git a/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2835-aux-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2835-aux-intc.txt new file mode 100644 index 0000000..9cbbab6 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2835-aux-intc.txt @@ -0,0 +1,27 @@ +BCM2835 Auxiliary ("AUXIRQ") Interrupt Controller + +The BCM2835 family of SoCs multiplexes the interrupts for peripherals in +the AUX block into a single IRQ. The AUXIRQ register shows the IRQ status +of each of the peripherals. Note that there are no masking or clearing +facilities - interrupts must be enabled and acknowledged in the +individual peripherals. + +Required properties: +- compatible : Should be "brcm,bcm2835-aux-intc". +- reg : Specifies base physical address and size of the registers. +- interrupts : The interrupt number - see + bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt +- interrupt-controller : Identifies the node as an interrupt controller +- #interrupt-cells : Specifies the number of cells needed to encode an + interrupt source. The value shall be 1. + + The cell contains the interrupt specifier, as found in + include/dt-bindings/interrupt-controller/bcm2835-aux-intc.h. + +Example: + + auxintc: interrupt-controller@7e215000 { + compatible = "brcm,bcm2835-aux-intc"; + reg = <0x7e215000 0x4>; + interrupts = <1 29>; + interrupt-controller; diff --git a/include/dt-bindings/interrupt-controller/bcm2835-aux-intc.h b/include/dt-bindings/interrupt-controller/bcm2835-aux-intc.h new file mode 100644 index 0000000..8b9fc12 --- /dev/null +++ b/include/dt-bindings/interrupt-controller/bcm2835-aux-intc.h @@ -0,0 +1,20 @@ +/* + * Copyright (C) 2017 Raspberry Pi (Trading) Ltd. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#define BCM2835_AUX_IRQ_UART 0 +#define BCM2835_AUX_IRQ_SPI1 1 +#define BCM2835_AUX_IRQ_SPI2 2 +#define BCM2835_AUX_IRQ_COUNT 3 -- 1.9.1