221 lines
6.5 KiB
YAML
221 lines
6.5 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/remoteproc/ti,pru-rproc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TI Programmable Realtime Unit (PRU) cores
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maintainers:
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- Suman Anna <s-anna@ti.com>
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description: |
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Each Programmable Real-Time Unit and Industrial Communication Subsystem
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(PRU-ICSS or PRUSS) has two 32-bit load/store RISC CPU cores called
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Programmable Real-Time Units (PRUs), each represented by a node. Each PRU
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core has a dedicated Instruction RAM, Control and Debug register sets, and
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use the Data RAMs present within the PRU-ICSS for code execution.
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The K3 SoCs containing ICSSG v1.0 (eg: AM65x SR1.0) also have two Auxiliary
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PRU cores called RTUs with slightly different IP integration. The K3 SoCs
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containing the revised ICSSG v1.1 (eg: J721E, AM65x SR2.0) have an extra two
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auxiliary Transmit PRU cores called Tx_PRUs that augment the PRUs. Each RTU
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or Tx_PRU core can also be used independently like a PRU, or alongside a
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corresponding PRU core to provide/implement auxiliary functionality/support.
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Each PRU, RTU or Tx_PRU core node should be defined as a child node of the
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corresponding PRU-ICSS node. Each node can optionally be rendered inactive by
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using the standard DT string property, "status".
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Please see the overall PRU-ICSS bindings document for additional details
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including a complete example,
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Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml
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properties:
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compatible:
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enum:
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- ti,am3356-pru # for AM335x SoC family (AM3356+ SoCs only)
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- ti,am4376-pru # for AM437x SoC family (AM4376+ SoCs only)
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- ti,am5728-pru # for AM57xx SoC family
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- ti,am625-pru # for PRUs in K3 AM62x SoC family
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- ti,am642-pru # for PRUs in K3 AM64x SoC family
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- ti,am642-rtu # for RTUs in K3 AM64x SoC family
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- ti,am642-tx-pru # for Tx_PRUs in K3 AM64x SoC family
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- ti,am654-pru # for PRUs in K3 AM65x SoC family
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- ti,am654-rtu # for RTUs in K3 AM65x SoC family
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- ti,am654-tx-pru # for Tx_PRUs in K3 AM65x SR2.0 SoCs
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- ti,j721e-pru # for PRUs in K3 J721E SoC family
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- ti,j721e-rtu # for RTUs in K3 J721E SoC family
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- ti,j721e-tx-pru # for Tx_PRUs in K3 J721E SoC family
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- ti,k2g-pru # for 66AK2G SoC family
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reg:
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items:
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- description: Address and Size of the PRU Instruction RAM
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- description: Address and Size of the PRU CTRL sub-module registers
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- description: Address and Size of the PRU Debug sub-module registers
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reg-names:
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items:
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- const: iram
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- const: control
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- const: debug
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firmware-name:
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description: |
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Should contain the name of the default firmware image
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file located on the firmware search path.
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if:
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properties:
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compatible:
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enum:
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- ti,am654-rtu
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- ti,j721e-rtu
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- ti,am642-rtu
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then:
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properties:
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$nodename:
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pattern: "^rtu@[0-9a-f]+$"
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else:
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if:
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properties:
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compatible:
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enum:
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- ti,am654-tx-pru
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- ti,j721e-tx-pru
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- ti,am642-tx-pru
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then:
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properties:
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$nodename:
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pattern: "^txpru@[0-9a-f]+"
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else:
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properties:
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$nodename:
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pattern: "^pru@[0-9a-f]+$"
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required:
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- compatible
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- reg
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- reg-names
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- firmware-name
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additionalProperties: false
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examples:
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- |
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/* AM33xx PRU-ICSS */
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pruss_tm: target-module@300000 { /* 0x4a300000, ap 9 04.0 */
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compatible = "ti,sysc-pruss", "ti,sysc";
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0x0 0x300000 0x80000>;
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pruss: pruss@0 {
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compatible = "ti,am3356-pruss";
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reg = <0x0 0x80000>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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pruss_mem: memories@0 {
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reg = <0x0 0x2000>,
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<0x2000 0x2000>,
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<0x10000 0x3000>;
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reg-names = "dram0", "dram1", "shrdram2";
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};
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pru0: pru@34000 {
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compatible = "ti,am3356-pru";
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reg = <0x34000 0x2000>,
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<0x22000 0x400>,
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<0x22400 0x100>;
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reg-names = "iram", "control", "debug";
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firmware-name = "am335x-pru0-fw";
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};
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pru1: pru@38000 {
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compatible = "ti,am3356-pru";
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reg = <0x38000 0x2000>,
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<0x24000 0x400>,
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<0x24400 0x100>;
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reg-names = "iram", "control", "debug";
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firmware-name = "am335x-pru1-fw";
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};
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};
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};
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- |
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/* AM65x SR2.0 ICSSG */
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#include <dt-bindings/soc/ti,sci_pm_domain.h>
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icssg0: icssg@b000000 {
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compatible = "ti,am654-icssg";
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reg = <0xb000000 0x80000>;
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power-domains = <&k3_pds 62 TI_SCI_PD_EXCLUSIVE>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0x0 0xb000000 0x80000>;
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icssg0_mem: memories@0 {
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reg = <0x0 0x2000>,
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<0x2000 0x2000>,
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<0x10000 0x10000>;
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reg-names = "dram0", "dram1", "shrdram2";
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};
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pru0_0: pru@34000 {
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compatible = "ti,am654-pru";
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reg = <0x34000 0x4000>,
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<0x22000 0x100>,
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<0x22400 0x100>;
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reg-names = "iram", "control", "debug";
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firmware-name = "am65x-pru0_0-fw";
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};
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rtu0_0: rtu@4000 {
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compatible = "ti,am654-rtu";
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reg = <0x4000 0x2000>,
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<0x23000 0x100>,
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<0x23400 0x100>;
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reg-names = "iram", "control", "debug";
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firmware-name = "am65x-rtu0_0-fw";
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};
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tx_pru0_0: txpru@a000 {
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compatible = "ti,am654-tx-pru";
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reg = <0xa000 0x1800>,
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<0x25000 0x100>,
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<0x25400 0x100>;
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reg-names = "iram", "control", "debug";
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firmware-name = "am65x-txpru0_0-fw";
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};
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pru0_1: pru@38000 {
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compatible = "ti,am654-pru";
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reg = <0x38000 0x4000>,
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<0x24000 0x100>,
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<0x24400 0x100>;
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reg-names = "iram", "control", "debug";
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firmware-name = "am65x-pru0_1-fw";
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};
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rtu0_1: rtu@6000 {
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compatible = "ti,am654-rtu";
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reg = <0x6000 0x2000>,
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<0x23800 0x100>,
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<0x23c00 0x100>;
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reg-names = "iram", "control", "debug";
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firmware-name = "am65x-rtu0_1-fw";
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};
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tx_pru0_1: txpru@c000 {
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compatible = "ti,am654-tx-pru";
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reg = <0xc000 0x1800>,
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<0x25800 0x100>,
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<0x25c00 0x100>;
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reg-names = "iram", "control", "debug";
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firmware-name = "am65x-txpru0_1-fw";
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};
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};
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