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diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml new file mode 100644 index 000000000..fb9605f06 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml @@ -0,0 +1,313 @@ +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/remoteproc/ti,k3-r5f-rproc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TI K3 R5F processor subsystems + +maintainers: + - Suman Anna <s-anna@ti.com> + +description: | + The TI K3 family of SoCs usually have one or more dual-core Arm Cortex R5F + processor subsystems/clusters (R5FSS). The dual core cluster can be used + either in a LockStep mode providing safety/fault tolerance features or in a + Split mode providing two individual compute cores for doubling the compute + capacity on most SoCs. These are used together with other processors present + on the SoC to achieve various system level goals. + + AM64x SoCs do not support LockStep mode, but rather a new non-safety mode + called "Single-CPU" mode, where only Core0 is used, but with ability to use + Core1's TCMs as well. + + Each Dual-Core R5F sub-system is represented as a single DTS node + representing the cluster, with a pair of child DT nodes representing + the individual R5F cores. Each node has a number of required or optional + properties that enable the OS running on the host processor to perform + the device management of the remote processor and to communicate with the + remote processor. + +properties: + $nodename: + pattern: "^r5fss(@.*)?" + + compatible: + enum: + - ti,am654-r5fss + - ti,j721e-r5fss + - ti,j7200-r5fss + - ti,am64-r5fss + - ti,j721s2-r5fss + + power-domains: + description: | + Should contain a phandle to a PM domain provider node and an args + specifier containing the R5FSS device id value. + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + + ranges: + description: | + Standard ranges definition providing address translations for + local R5F TCM address spaces to bus addresses. + +# Optional properties: +# -------------------- + + ti,cluster-mode: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + Configuration Mode for the Dual R5F cores within the R5F cluster. + Should be either a value of 1 (LockStep mode) or 0 (Split mode) on + most SoCs (AM65x, J721E, J7200, J721s2), default is LockStep mode if + omitted; and should be either a value of 0 (Split mode) or 2 + (Single-CPU mode) on AM64x SoCs, default is Split mode if omitted. + +# R5F Processor Child Nodes: +# ========================== + +patternProperties: + "^r5f@[a-f0-9]+$": + type: object + description: | + The R5F Sub-System device node should define two R5F child nodes, each + node representing a TI instantiation of the Arm Cortex R5F core. There + are some specific integration differences for the IP like the usage of + a Region Address Translator (RAT) for translating the larger SoC bus + addresses into a 32-bit address space for the processor. + + Each R5F core has an associated 64 KB of Tightly-Coupled Memory (TCM) + internal memories split between two banks - TCMA and TCMB (further + interleaved into two banks TCMB0 and TCMB1). These memories (also called + ATCM and BTCM) provide read/write performance on par with the core's L1 + caches. Each of the TCMs can be enabled or disabled independently and + either of them can be configured to appear at that R5F's address 0x0. + + The cores do not use an MMU, but has a Region Address Translater + (RAT) module that is accessible only from the R5Fs for providing + translations between 32-bit CPU addresses into larger system bus + addresses. Cache and memory access settings are provided through a + Memory Protection Unit (MPU), programmable only from the R5Fs. + + $ref: /schemas/arm/keystone/ti,k3-sci-common.yaml# + + properties: + compatible: + enum: + - ti,am654-r5f + - ti,j721e-r5f + - ti,j7200-r5f + - ti,am64-r5f + - ti,j721s2-r5f + + reg: + items: + - description: Address and Size of the ATCM internal memory region + - description: Address and Size of the BTCM internal memory region + + reg-names: + items: + - const: atcm + - const: btcm + + resets: + description: | + Should contain the phandle to the reset controller node managing the + local resets for this device, and a reset specifier. + maxItems: 1 + + firmware-name: + description: | + Should contain the name of the default firmware image + file located on the firmware search path + +# The following properties are mandatory for R5F Core0 in both LockStep and Split +# modes, and are mandatory for R5F Core1 _only_ in Split mode. They are unused for +# R5F Core1 in LockStep mode: + + mboxes: + description: | + OMAP Mailbox specifier denoting the sub-mailbox, to be used for + communication with the remote processor. This property should match + with the sub-mailbox node used in the firmware image. + maxItems: 1 + + memory-region: + description: | + phandle to the reserved memory nodes to be associated with the + remoteproc device. There should be at least two reserved memory nodes + defined. The reserved memory nodes should be carveout nodes, and + should be defined with a "no-map" property as per the bindings in + Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt + minItems: 2 + maxItems: 8 + items: + - description: region used for dynamic DMA allocations like vrings and + vring buffers + - description: region reserved for firmware image sections + additionalItems: true + + +# Optional properties: +# -------------------- +# The following properties are optional properties for each of the R5F cores: + + ti,atcm-enable: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + R5F core configuration mode dictating if ATCM should be enabled. The + R5F address of ATCM is dictated by ti,loczrama property. Should be + either a value of 1 (enabled) or 0 (disabled), default is disabled + if omitted. Recommended to enable it for maximizing TCMs. + + ti,btcm-enable: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + R5F core configuration mode dictating if BTCM should be enabled. The + R5F address of BTCM is dictated by ti,loczrama property. Should be + either a value of 1 (enabled) or 0 (disabled), default is enabled if + omitted. + + ti,loczrama: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + R5F core configuration mode dictating which TCM should appear at + address 0 (from core's view). Should be either a value of 1 (ATCM + at 0x0) or 0 (BTCM at 0x0), default value is 1 if omitted. + + sram: + $ref: /schemas/types.yaml#/definitions/phandle-array + minItems: 1 + maxItems: 4 + items: + maxItems: 1 + description: | + phandles to one or more reserved on-chip SRAM regions. The regions + should be defined as child nodes of the respective SRAM node, and + should be defined as per the generic bindings in, + Documentation/devicetree/bindings/sram/sram.yaml + + required: + - compatible + - reg + - reg-names + - ti,sci + - ti,sci-dev-id + - ti,sci-proc-ids + - resets + - firmware-name + + unevaluatedProperties: false + +if: + properties: + compatible: + enum: + - ti,am64-r5fss +then: + properties: + ti,cluster-mode: + enum: [0, 2] +else: + properties: + ti,cluster-mode: + enum: [0, 1] + +required: + - compatible + - power-domains + - "#address-cells" + - "#size-cells" + - ranges + +additionalProperties: false + +examples: + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + mailbox0: mailbox-0 { + #mbox-cells = <1>; + }; + + mailbox1: mailbox-1 { + #mbox-cells = <1>; + }; + + bus@100000 { + compatible = "simple-bus"; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x00 0x00100000 0x00 0x00100000 0x00 0x00020000>, /* ctrl mmr */ + <0x00 0x41000000 0x00 0x41000000 0x00 0x00020000>, + <0x00 0x41400000 0x00 0x41400000 0x00 0x00020000>, + <0x00 0x41c00000 0x00 0x41c00000 0x00 0x00080000>; + + bus@28380000 { + compatible = "simple-bus"; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x00 0x28380000 0x00 0x28380000 0x00 0x03880000>, /* MCU NAVSS */ + <0x00 0x41000000 0x00 0x41000000 0x00 0x00020000>, /* MCU R5F Core0 */ + <0x00 0x41400000 0x00 0x41400000 0x00 0x00020000>, /* MCU R5F Core1 */ + <0x00 0x41c00000 0x00 0x41c00000 0x00 0x00080000>; /* MCU SRAM */ + + /* AM65x MCU R5FSS node */ + mcu_r5fss0: r5fss@41000000 { + compatible = "ti,am654-r5fss"; + power-domains = <&k3_pds 129>; + ti,cluster-mode = <1>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x41000000 0x00 0x41000000 0x20000>, + <0x41400000 0x00 0x41400000 0x20000>; + + mcu_r5f0: r5f@41000000 { + compatible = "ti,am654-r5f"; + reg = <0x41000000 0x00008000>, + <0x41010000 0x00008000>; + reg-names = "atcm", "btcm"; + ti,sci = <&dmsc>; + ti,sci-dev-id = <159>; + ti,sci-proc-ids = <0x01 0xFF>; + resets = <&k3_reset 159 1>; + firmware-name = "am65x-mcu-r5f0_0-fw"; + ti,atcm-enable = <1>; + ti,btcm-enable = <1>; + ti,loczrama = <1>; + mboxes = <&mailbox0 &mbox_mcu_r5fss0_core0>; + memory-region = <&mcu_r5fss0_core0_dma_memory_region>, + <&mcu_r5fss0_core0_memory_region>; + sram = <&mcu_r5fss0_core0_sram>; + }; + + mcu_r5f1: r5f@41400000 { + compatible = "ti,am654-r5f"; + reg = <0x41400000 0x00008000>, + <0x41410000 0x00008000>; + reg-names = "atcm", "btcm"; + ti,sci = <&dmsc>; + ti,sci-dev-id = <245>; + ti,sci-proc-ids = <0x02 0xFF>; + resets = <&k3_reset 245 1>; + firmware-name = "am65x-mcu-r5f0_1-fw"; + ti,atcm-enable = <1>; + ti,btcm-enable = <1>; + ti,loczrama = <1>; + mboxes = <&mailbox1 &mbox_mcu_r5fss0_core1>; + }; + }; + }; + }; + }; |