From: Samuel Holland <samuel@sholland.org> To: Maxime Ripard <maxime.ripard@bootlin.com>, Chen-Yu Tsai <wens@csie.org>, Jassi Brar <jassisinghbrar@gmail.com>, Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Corentin Labbe <clabbe.montjoie@gmail.com>, Vasily Khoruzhick <anarsoul@gmail.com> Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, Samuel Holland <samuel@sholland.org>, Rob Herring <robh@kernel.org> Subject: [PATCH v4 03/10] dt-bindings: mailbox: Add a sunxi message box binding Date: Mon, 19 Aug 2019 22:23:04 -0500 Message-ID: <20190820032311.6506-4-samuel@sholland.org> (raw) In-Reply-To: <20190820032311.6506-1-samuel@sholland.org> This mailbox hardware is present in Allwinner sun8i, sun9i, and sun50i SoCs. Add a device tree binding for it. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Samuel Holland <samuel@sholland.org> --- .../mailbox/allwinner,sunxi-msgbox.yaml | 79 +++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/allwinner,sunxi-msgbox.yaml diff --git a/Documentation/devicetree/bindings/mailbox/allwinner,sunxi-msgbox.yaml b/Documentation/devicetree/bindings/mailbox/allwinner,sunxi-msgbox.yaml new file mode 100644 index 000000000000..f34a1909ab2e --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/allwinner,sunxi-msgbox.yaml @@ -0,0 +1,79 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mailbox/allwinner,sunxi-msgbox.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner sunxi Message Box + +maintainers: + - Samuel Holland <samuel@sholland.org> + +description: | + The hardware message box on sun6i and newer sunxi SoCs is a two-user mailbox + controller containing 8 unidirectional FIFOs. An interrupt is raised for + received messages, but software must poll to know when a transmitted message + has been acknowledged by the remote user. Each FIFO can hold four 32-bit + messages; when a FIFO is full, clients must wait before more transmissions. + + Refer to ./mailbox.txt for generic information about mailbox device-tree + bindings. + +properties: + compatible: + oneOf: + - items: + - enum: + - allwinner,sun8i-a83t-msgbox + - allwinner,sun8i-h3-msgbox + - allwinner,sun9i-a80-msgbox + - allwinner,sun50i-a64-msgbox + - allwinner,sun50i-h6-msgbox + - const: allwinner,sun6i-a31-msgbox + - items: + - const: allwinner,sun6i-a31-msgbox + + reg: + items: + - description: MMIO register range + + clocks: + maxItems: 1 + description: bus clock + + resets: + maxItems: 1 + description: bus reset + + interrupts: + maxItems: 1 + description: controller interrupt + + '#mbox-cells': + const: 1 + +required: + - compatible + - reg + - clocks + - resets + - interrupts + - '#mbox-cells' + +examples: + - | + #include <dt-bindings/clock/sun8i-h3-ccu.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/reset/sun8i-h3-ccu.h> + + msgbox: mailbox@1c17000 { + compatible = "allwinner,sun8i-h3-msgbox", + "allwinner,sun6i-a31-msgbox"; + reg = <0x01c17000 0x1000>; + clocks = <&ccu CLK_BUS_MSGBOX>; + resets = <&ccu RST_BUS_MSGBOX>; + interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>; + #mbox-cells = <1>; + }; + +... -- 2.21.0
next prev parent reply index Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-08-20 3:23 [PATCH v4 00/10] Allwinner sunxi message box support Samuel Holland 2019-08-20 3:23 ` [PATCH v4 01/10] clk: sunxi-ng: Mark msgbox clocks as critical Samuel Holland 2019-08-20 3:23 ` [PATCH v4 02/10] clk: sunxi-ng: Mark AR100 " Samuel Holland 2019-08-20 7:11 ` Maxime Ripard 2019-08-20 13:02 ` Samuel Holland 2019-08-21 12:24 ` Maxime Ripard 2019-09-05 18:56 ` Stephen Boyd 2019-08-20 3:23 ` Samuel Holland [this message] 2019-08-20 7:14 ` [PATCH v4 03/10] dt-bindings: mailbox: Add a sunxi message box binding Maxime Ripard 2019-08-20 13:04 ` Samuel Holland 2019-08-21 12:07 ` Maxime Ripard 2019-08-20 3:23 ` [PATCH v4 04/10] mailbox: sunxi-msgbox: Add a new mailbox driver Samuel Holland 2019-08-20 8:27 ` Maxime Ripard 2019-08-20 11:18 ` Ondřej Jirman 2019-08-20 13:07 ` Samuel Holland 2019-08-20 13:34 ` Ondřej Jirman 2019-08-21 12:30 ` Maxime Ripard 2019-08-20 3:23 ` [PATCH v4 05/10] ARM: dts: sunxi: a80: Add msgbox node Samuel Holland 2019-08-20 8:15 ` Maxime Ripard 2019-08-20 13:17 ` Samuel Holland 2019-08-23 14:56 ` Maxime Ripard 2019-08-20 3:23 ` [PATCH v4 06/10] ARM: dts: sunxi: a83t: " Samuel Holland 2019-08-20 3:23 ` [PATCH v4 07/10] ARM: dts: sunxi: h3/h5: " Samuel Holland 2019-08-20 3:23 ` [PATCH v4 08/10] arm64: dts: allwinner: a64: " Samuel Holland 2019-08-20 3:23 ` [PATCH v4 09/10] arm64: dts: allwinner: h6: " Samuel Holland 2019-08-20 3:23 ` [PATCH v4 10/10] [DO NOT MERGE] drivers: firmware: msgbox demo Samuel Holland 2019-09-09 3:22 ` [PATCH v4 00/10] Allwinner sunxi message box support Ondřej Jirman 2019-09-09 3:54 ` Samuel Holland 2019-09-09 12:36 ` Ondřej Jirman
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