[PATCH v8 6/9] mailbox: Add NVIDIA Tegra XUSB mailbox binding
From: Andrew Bresticker <hidden>
Date: 2015-05-04 17:38:28
Also in:
linux-devicetree, linux-tegra, lkml
Subsystem:
mailbox api, open firmware and flattened device tree bindings, the rest · Maintainers:
Jassi Brar, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add device-tree bindings for the Tegra XUSB mailbox which will be used for communication between the Tegra xHCI controller's firmware and the host processor. Signed-off-by: Andrew Bresticker <redacted> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <redacted> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <redacted> Cc: Kumar Gala <redacted> Cc: Jassi Brar <jassisinghbrar@gmail.com> --- Changes from v7: - Added back interrupts property. Changes from v6: - Removed reg/interrupts properties. No changes from v3/v4/v5. Changes from v2: - Dropped channel specifier. - Added pointer to mailbox documentation. Changes from v1: - Updated to use common mailbox bindings. --- .../bindings/mailbox/nvidia,tegra124-xusb-mbox.txt | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/nvidia,tegra124-xusb-mbox.txt
diff --git a/Documentation/devicetree/bindings/mailbox/nvidia,tegra124-xusb-mbox.txt b/Documentation/devicetree/bindings/mailbox/nvidia,tegra124-xusb-mbox.txt
new file mode 100644
index 0000000..7eb72ce
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/nvidia,tegra124-xusb-mbox.txt@@ -0,0 +1,32 @@ +NVIDIA Tegra XUSB mailbox +========================= + +The Tegra XUSB mailbox is used by the Tegra xHCI controller's firmware to +communicate requests to the host and PHY drivers. + +Refer to ./mailbox.txt for generic information about mailbox device-tree +bindings. + +Required properties: +-------------------- + - compatible: For Tegra124, must contain "nvidia,tegra124-xusb-mbox". + Otherwise, must contain '"nvidia,<chip>-xusb-mbox", + "nvidia,tegra124-xusb-mbox"' where <chip> is tegra132. + - interrupts: Must contain the XUSB mailbox interrupt. + - #mbox-cells: Should be 0. There is only one physical channel. + +Example: +-------- + xusb_mbox: mailbox { + compatible = "nvidia,tegra124-xusb-mbox"; + interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>; + + #mbox-cells = <0>; + }; + + usb-host at 0,70090000 { + ... + mboxes = <&xusb_mbox>; + mbox-names = "xusb"; + ... + };
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2.2.0.rc0.207.ga3a616c