Add the device tree bindings document for ti,am3353-wkup-m3 which is
used by the wkup_m3_rproc driver.
Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx>
---
.../bindings/remoteproc/wkup_m3_rproc.txt | 46 ++++++++++++++++++++++
1 file changed, 46 insertions(+)
create mode 100644 Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt
diff --git a/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt
new file mode 100644
index 0000000..995af3d
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt
@@ -0,0 +1,46 @@
+Wakeup M3 Remoteproc Driver
+===========================
+
+TI AMx3 family of devices use a Cortex M3 co-processor to help with various
+low power tasks that cannot be controlled from the MPU. The CM3 requires
+a firmware binary to accomplish this. The wkup_m3 remoteproc driver handles
+the loading of the firmware and booting of the CM3.
+
+Wkup M3 Device Node:
+====================
+A wkup_m3 device node is used to represent a wakeup M3 IP instance within
+a SoC.
+
+Required properties:
+--------------------
+- compatible: Should be:
+ "ti,am3353-wkup-m3" for AM33xx SoCs
+ "ti,am4372-wkup-m3" for AM43xx SoCs
+- reg: Contains the wkup_m3 register address ranges for
+ umem and dmem, from the devices address space.
+ NOTE: Parent node must contains ranges specifying
+ mapping from bus address space to device
+ address space.
+- ti,hwmods: Name of the hwmod associated with the mailbox
+- ti,pm-firmware: Name of firmware file to load for remoteproc.
+
+Example:
+--------
+/* AM33xx */
+soc {
+ compatible = "ti,omap-infra";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0x44d00000 0x4000>,
+ <0x80000 0x44d80000 0x2000>;
+
+ ...
+
+ wkup_m3: wkup_m3@44d00000 {
+ compatible = "ti,am3353-wkup-m3";
+ reg = <0x0 0x4000 /* M3 UMEM */
+ 0x80000 0x2000>; /* M3 DMEM */
+ ti,hwmods = "wkup_m3";
+ ti,pm-firmware = "am335x-pm-firmware.elf";
+ };
+};
--
2.3.0
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