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 [thread overview]
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 other threads:[~2019-08-20 3:23 UTC|newest]
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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