From mboxrd@z Thu Jan 1 00:00:00 1970 From: jbrunet@baylibre.com (Jerome Brunet) Date: Thu, 15 Jun 2017 18:17:59 +0200 Subject: [PATCH v3 1/6] dt-bindings: interrupt-controller: add DT binding for meson GPIO interrupt controller In-Reply-To: <20170615161804.32658-1-jbrunet@baylibre.com> References: <20170615161804.32658-1-jbrunet@baylibre.com> Message-ID: <20170615161804.32658-2-jbrunet@baylibre.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This commit adds the device tree bindings description for Amlogic's GPIO interrupt controller available on the meson8b, gxbb and gxl SoC families Signed-off-by: Jerome Brunet --- .../amlogic,meson-gpio-intc.txt | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt diff --git a/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt new file mode 100644 index 000000000000..288e97fb9db4 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt @@ -0,0 +1,35 @@ +Amlogic meson GPIO interrupt controller + +Meson SoCs contains an interrupt controller which is able watch the SoC pads +and generate an interrupt on edges or level. The controller is essentially a +256 pads to 8 GIC interrupt multiplexer, with a filter block to select edge +or level and polarity. We don?t expose all 256 mux inputs because the +documentation shows that upper part is not mapped to any pad. The actual number +of interrupt exposed depends on the SoC. + +Required properties: + +- compatible : must have "amlogic,meson8-gpio-intc? and either + ?amlogic,meson8b-gpio-intc? for meson8b SoCs (S805) or + ?amlogic,meson-gxbb-gpio-intc? for GXBB SoCs (S905) or + ?amlogic,meson-gxl-gpio-intc? for GXL SoCs (S905X, S912) +- interrupt-parent : a phandle to the GIC the interrupts are routed to. + Usually this is provided at the root level of the device tree as it is + common to most of the SoC. +- reg : Specifies base physical address and size of the registers. +- interrupt-controller : Identifies the node as an interrupt controller. +- #interrupt-cells : Specifies the number of cells needed to encode an + interrupt source. The value must be 2. +- meson,upstream-interrupts: Array with the 8 upstream hwirq numbers. These + are the hwirqs used on the parent interrupt controller. + +Example: + +gpio_interrupt: interrupt-controller at 9880 { + compatible = "amlogic,meson-gxbb-gpio-intc", + "amlogic,meson-gpio-intc"; + reg = <0x0 0x9880 0x0 0x10>; + interrupt-controller; + #interrupt-cells = <2>; + meson,upstream-interrupts = <64 65 66 67 68 69 70 71>; +}; -- 2.9.4