[PATCH v2 1/9] of: Add NVIDIA Tegra XUSB mailbox binding
From: Andrew Bresticker <hidden>
Date: 2014-08-18 17:08:35
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> --- Changes from v1: - Updated to use common mailbox bindings. --- .../bindings/mailbox/nvidia,tegra124-xusb-mbox.txt | 30 ++++++++++++++++++++++ include/dt-bindings/mailbox/tegra-xusb-mailbox.h | 7 +++++ 2 files changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/nvidia,tegra124-xusb-mbox.txt create mode 100644 include/dt-bindings/mailbox/tegra-xusb-mailbox.h
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..c46219b
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/nvidia,tegra124-xusb-mbox.txt@@ -0,0 +1,30 @@ +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. + +Required properties: +-------------------- + - compatible: Should be "nvidia,tegra124-xusb-mbox". + - reg: Address and length of the XUSB FPCI registers. + - interrupts: XUSB mailbox interrupt. + - #mbox-cells: Should be 1. The specifier is the index of the mailbox to + reference. See <dt-bindings/mailbox/tegra-xusb-mailbox.h> for the list + of valid values. + +Example: +-------- + mbox: mailbox at 0,70098000 { + compatible = "nvidia,tegra124-xusb-mbox"; + reg = <0x0 0x70098000 0x0 0x1000>; + interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>; + + #mbox-cells = <1>; + }; + + usb at 0,70090000 { + ... + mboxes = <&mbox TEGRA_XUSB_MBOX_CHAN_HOST>; + ... + };
diff --git a/include/dt-bindings/mailbox/tegra-xusb-mailbox.h b/include/dt-bindings/mailbox/tegra-xusb-mailbox.h
new file mode 100644
index 0000000..59de6b0
--- /dev/null
+++ b/include/dt-bindings/mailbox/tegra-xusb-mailbox.h@@ -0,0 +1,7 @@ +#ifndef _DT_BINDINGS_TEGRA_XUSB_MAILBOX_H +#define _DT_BINDINGS_TEGRA_XUSB_MAILBOX_H + +#define TEGRA_XUSB_MBOX_CHAN_HOST 0 +#define TEGRA_XUSB_MBOX_CHAN_PHY 1 + +#endif /* _DT_BINDINGS_TEGRA_XUSB_MAILBOX_H */
--
2.1.0.rc2.206.gedb03e5