remoteproc: Introduce K3 remoteproc driver
Add support for K3 based remoteproc driver that
communicates with TISCI to start start a remote processor.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/doc/device-tree-bindings/remoteproc/k3-rproc.txt b/doc/device-tree-bindings/remoteproc/k3-rproc.txt
new file mode 100644
index 0000000..0a1e858
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+++ b/doc/device-tree-bindings/remoteproc/k3-rproc.txt
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+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>;
+};