| Lokesh Vutla | fdae32e | 2018-08-27 15:57:52 +0530 | [diff] [blame^] | 1 | Texas Instruments' K3 Remote processor driver |
| 2 | ============================================= |
| 3 | |
| 4 | In K3 generation Socs, loading an image on any processing entity |
| 5 | cannot be done directly from U-Boot. In order to load an image, |
| 6 | remoteproc driver should communicate to SYSFW with a specific sequence. |
| 7 | Also enable the timer required for this remotecore. |
| 8 | |
| 9 | Required properties: |
| 10 | -------------------- |
| 11 | - compatible: Shall be: "ti,am654-rproc" |
| 12 | - reg: base address of the remoteproc timer. |
| 13 | - power-domains: Should contain two sets of entries: |
| 14 | First set corresponds to pm domain of the |
| 15 | remotecore timer. Seconf entry corresponds to the |
| 16 | remoteproc to start. |
| 17 | This property is as per the binding, |
| 18 | doc/device-tree-bindings/power/ti,sci-pm-domain.txt |
| 19 | - resets: Should contain a phandle to a reset controller node |
| 20 | and an args specifier containing the remote code |
| 21 | device id and reset mask value. This is as per the |
| 22 | doc/device-tree-bindings/reset/ti,sci-reset.txt |
| 23 | - ti,sci: Phandle to TI-SCI compatible System controller node. |
| 24 | - ti,sci-proc-id: Processor id as identified by TISCI |
| 25 | |
| 26 | Optional properties: |
| 27 | -------------------- |
| 28 | - assigned-clocks: Should contain a phandle to clock node and an args |
| 29 | specifier containing the remote core device id and |
| 30 | the clock id within the remote core. This is as per |
| 31 | doc/device-tree-bindings/clock/ti,sci-clk.txt |
| 32 | - assigned-clock-rates: One entry for each entry of assigned-clocks. This is |
| 33 | the frequency at which the corresponding clock needs |
| 34 | to be assigned. |
| 35 | - ti,sci-host-id: Host ID to which the processor control is transferred to |
| 36 | |
| 37 | Example: |
| 38 | --------- |
| 39 | |
| 40 | a53_0: a53@0 { |
| 41 | compatible = "ti,am654-rproc"; |
| 42 | power-domains = <&k3_pds 61>, |
| 43 | <&k3_pds 202>; |
| 44 | resets = <&k3_reset 202 0>; |
| 45 | assigned-clocks = <&k3_clks 202 0>; |
| 46 | assigned-clock-rates = <800000000>; |
| 47 | ti,sci = <&dmsc>; |
| 48 | ti,sci-proc-id = <32>; |
| 49 | ti,sci-host-id = <10>; |
| 50 | }; |