mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-17 16:53:06 +00:00
51 lines
1.8 KiB
Text
51 lines
1.8 KiB
Text
|
Texas Instruments' K3 Remote processor driver
|
||
|
|
=============================================
|
||
|
|
|
||
|
|
In K3 generation Socs, loading an image on any processing entity
|
||
|
|
cannot be done directly from U-Boot. In order to load an image,
|
||
|
|
remoteproc driver should communicate to SYSFW with a specific sequence.
|
||
|
|
Also enable the timer required for this remotecore.
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
--------------------
|
||
|
|
- compatible: Shall be: "ti,am654-rproc"
|
||
|
|
- reg: base address of the remoteproc timer.
|
||
|
|
- power-domains: Should contain two sets of entries:
|
||
|
|
First set corresponds to pm domain of the
|
||
|
|
remotecore timer. Seconf entry corresponds to the
|
||
|
|
remoteproc to start.
|
||
|
|
This property is as per the binding,
|
||
|
|
doc/device-tree-bindings/power/ti,sci-pm-domain.txt
|
||
|
|
- resets: Should contain a phandle to a reset controller node
|
||
|
|
and an args specifier containing the remote code
|
||
|
|
device id and reset mask value. This is as per the
|
||
|
|
doc/device-tree-bindings/reset/ti,sci-reset.txt
|
||
|
|
- ti,sci: Phandle to TI-SCI compatible System controller node.
|
||
|
|
- ti,sci-proc-id: Processor id as identified by TISCI
|
||
|
|
|
||
|
|
Optional properties:
|
||
|
|
--------------------
|
||
|
|
- assigned-clocks: Should contain a phandle to clock node and an args
|
||
|
|
specifier containing the remote core device id and
|
||
|
|
the clock id within the remote core. This is as per
|
||
|
|
doc/device-tree-bindings/clock/ti,sci-clk.txt
|
||
|
|
- assigned-clock-rates: One entry for each entry of assigned-clocks. This is
|
||
|
|
the frequency at which the corresponding clock needs
|
||
|
|
to be assigned.
|
||
|
|
- ti,sci-host-id: Host ID to which the processor control is transferred to
|
||
|
|
|
||
|
|
Example:
|
||
|
|
---------
|
||
|
|
|
||
|
|
a53_0: a53@0 {
|
||
|
|
compatible = "ti,am654-rproc";
|
||
|
|
power-domains = <&k3_pds 61>,
|
||
|
|
<&k3_pds 202>;
|
||
|
|
resets = <&k3_reset 202 0>;
|
||
|
|
assigned-clocks = <&k3_clks 202 0>;
|
||
|
|
assigned-clock-rates = <800000000>;
|
||
|
|
ti,sci = <&dmsc>;
|
||
|
|
ti,sci-proc-id = <32>;
|
||
|
|
ti,sci-host-id = <10>;
|
||
|
|
};
|