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authorAndrew Turner <andrew@FreeBSD.org>2016-01-28 20:21:15 +0000
committerAndrew Turner <andrew@FreeBSD.org>2016-01-28 20:21:15 +0000
commit235ad806ee815395bce54dc1b0ce1c06cd29b44a (patch)
tree41cbd9055ad0d6dfa04377df1bb51f3c3f3948e2 /Bindings/remoteproc
parentda75c2cc5808a45edc76752ba495dcc5dcd4346c (diff)
downloadsrc-235ad806ee815395bce54dc1b0ce1c06cd29b44a.tar.gz
src-235ad806ee815395bce54dc1b0ce1c06cd29b44a.zip
Import updated device-tree files from:vendor/device-tree/ianc-afaecb70
git://xenbits.xen.org/people/ianc/device-tree-rebasing.git @afaecb70e7ebb983c86d5eb45ff952e9af79c462
Notes
Notes: svn path=/vendor/device-tree/dist/; revision=295011 svn path=/vendor/device-tree/ianc-afaecb70/; revision=295013; tag=vendor/device-tree/ianc-afaecb70
Diffstat (limited to 'Bindings/remoteproc')
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+TI Wakeup M3 Remoteproc Driver
+==============================
+
+The TI AM33xx and AM43xx family of devices use a small Cortex M3 co-processor
+(commonly referred to as Wakeup M3 or CM3) to help with various low power tasks
+that cannot be controlled from the MPU. This CM3 processor 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 the Wakeup M3 processor instance
+within the SoC. It is added as a child node of the parent interconnect bus
+(l4_wkup) through which it is accessible to the MPU.
+
+Required properties:
+--------------------
+- compatible: Should be one of,
+ "ti,am3352-wkup-m3" for AM33xx SoCs
+ "ti,am4372-wkup-m3" for AM43xx SoCs
+- reg: Should contain the address ranges for the two internal
+ memory regions, UMEM and DMEM. The parent node should
+ provide an appropriate ranges property for properly
+ translating these into bus addresses.
+- reg-names: Contains the corresponding names for the two memory
+ regions. These should be named "umem" & "dmem".
+- ti,hwmods: Name of the hwmod associated with the wkupm3 device.
+- ti,pm-firmware: Name of firmware file to be used for loading and
+ booting the wkup_m3 remote processor.
+
+Example:
+--------
+/* AM33xx */
+ocp {
+ l4_wkup: l4_wkup@44c00000 {
+ compatible = "am335-l4-wkup", "simple-bus";
+ ranges = <0 0x44c00000 0x400000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ wkup_m3: wkup_m3@100000 {
+ compatible = "ti,am3352-wkup-m3";
+ reg = <0x100000 0x4000>,
+ <0x180000 0x2000>;
+ reg-names = "umem", "dmem";
+ ti,hwmods = "wkup_m3";
+ ti,pm-firmware = "am335x-pm-firmware.elf";
+ };
+ };
+
+ ...
+};