diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/vexpress-config.yaml | 285 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/arm/vexpress-sysreg.txt | 103 |
2 files changed, 285 insertions, 103 deletions
diff --git a/Documentation/devicetree/bindings/arm/vexpress-config.yaml b/Documentation/devicetree/bindings/arm/vexpress-config.yaml new file mode 100644 index 000000000000..09e1adf5ca7a --- /dev/null +++ b/Documentation/devicetree/bindings/arm/vexpress-config.yaml @@ -0,0 +1,285 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/vexpress-config.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ARM Versatile Express configuration bus bindings + +maintainers: + - Andre Przywara <andre.przywara@arm.com> + +description: + This is a system control register block, acting as a bridge to the + platform's configuration bus via "system control" interface, addressing + devices with site number, position in the board stack, config controller, + function and device numbers - see motherboard's TRM for more details. + +properties: + compatible: + const: arm,vexpress,config-bus + + arm,vexpress,config-bridge: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the sysreg node. + + muxfpga: + type: object + properties: + compatible: + const: arm,vexpress-muxfpga + + arm,vexpress-sysreg,func: + description: FPGA specifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 7 + - description: device number + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + + shutdown: + type: object + properties: + compatible: + const: arm,vexpress-shutdown + + arm,vexpress-sysreg,func: + description: shutdown identifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 8 + - description: device number + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + + reboot: + type: object + properties: + compatible: + const: arm,vexpress-reboot + + arm,vexpress-sysreg,func: + description: reboot identifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 9 + - description: device number + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + + dvimode: + type: object + properties: + compatible: + const: arm,vexpress-dvimode + + arm,vexpress-sysreg,func: + description: DVI mode identifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 11 + - description: device number + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + +additionalProperties: false + +required: + - compatible + - arm,vexpress,config-bridge + +patternProperties: + 'clk[0-9]*$': + type: object + description: + clocks + + properties: + compatible: + const: arm,vexpress-osc + + arm,vexpress-sysreg,func: + description: clock specifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 1 + - description: clock number + + freq-range: + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - description: minimal clock frequency + - description: maximum clock frequency + + "#clock-cells": + const: 0 + + clock-output-names: + maxItems: 1 + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + - "#clock-cells" + + "^volt-.+$": + $ref: /schemas/regulator/regulator.yaml# + properties: + compatible: + const: arm,vexpress-volt + + arm,vexpress-sysreg,func: + description: regulator specifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 2 + - description: device number + + label: + maxItems: 1 + + unevaluatedProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + + "^amp-.+$": + type: object + properties: + compatible: + const: arm,vexpress-amp + + arm,vexpress-sysreg,func: + description: current sensor identifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 3 + - description: device number + + label: + maxItems: 1 + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + + "^temp-.+$": + type: object + properties: + compatible: + const: arm,vexpress-temp + + arm,vexpress-sysreg,func: + description: temperature sensor identifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 4 + - description: device number + + label: + maxItems: 1 + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + + "^reset[0-9]*$": + type: object + properties: + compatible: + const: arm,vexpress-reset + + arm,vexpress-sysreg,func: + description: reset specifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 5 + - description: reset device number + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + + "^power-.+$": + type: object + properties: + compatible: + const: arm,vexpress-power + + arm,vexpress-sysreg,func: + description: power sensor identifier + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - const: 12 + - description: device number + + label: + maxItems: 1 + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + + "^energy(-.+)?$": + type: object + properties: + compatible: + const: arm,vexpress-energy + + arm,vexpress-sysreg,func: + description: energy sensor identifier + $ref: /schemas/types.yaml#/definitions/uint32-array + oneOf: + - items: + - const: 13 + - description: device number + - items: + - const: 13 + - description: device number + - const: 13 + - description: second device number + + label: + maxItems: 1 + + additionalProperties: false + required: + - compatible + - arm,vexpress-sysreg,func + +examples: + - | + mcc { + compatible = "arm,vexpress,config-bus"; + arm,vexpress,config-bridge = <&v2m_sysreg>; + + clk0 { + compatible = "arm,vexpress-osc"; + arm,vexpress-sysreg,func = <1 0>; + #clock-cells = <0>; + }; + + energy { + compatible = "arm,vexpress-energy"; + arm,vexpress-sysreg,func = <13 0>, <13 1>; + }; + }; diff --git a/Documentation/devicetree/bindings/arm/vexpress-sysreg.txt b/Documentation/devicetree/bindings/arm/vexpress-sysreg.txt deleted file mode 100644 index 50095802fb4a..000000000000 --- a/Documentation/devicetree/bindings/arm/vexpress-sysreg.txt +++ /dev/null @@ -1,103 +0,0 @@ -ARM Versatile Express system registers --------------------------------------- - -This is a system control registers block, providing multiple low level -platform functions like board detection and identification, software -interrupt generation, MMC and NOR Flash control etc. - -Required node properties: -- compatible value : = "arm,vexpress,sysreg"; -- reg : physical base address and the size of the registers window - -Deprecated properties, replaced by GPIO subnodes (see below): -- gpio-controller : specifies that the node is a GPIO controller -- #gpio-cells : size of the GPIO specifier, should be 2: - - first cell is the pseudo-GPIO line number: - 0 - MMC CARDIN - 1 - MMC WPROT - 2 - NOR FLASH WPn - - second cell can take standard GPIO flags (currently ignored). - -Control registers providing pseudo-GPIO lines must be represented -by subnodes, each of them requiring the following properties: -- compatible value : one of - "arm,vexpress-sysreg,sys_led" - "arm,vexpress-sysreg,sys_mci" - "arm,vexpress-sysreg,sys_flash" -- gpio-controller : makes the node a GPIO controller -- #gpio-cells : size of the GPIO specifier, must be 2: - - first cell is the function number: - - for sys_led : 0..7 = LED 0..7 - - for sys_mci : 0 = MMC CARDIN, 1 = MMC WPROT - - for sys_flash : 0 = NOR FLASH WPn - - second cell can take standard GPIO flags (currently ignored). - -Example: - v2m_sysreg: sysreg@10000000 { - compatible = "arm,vexpress-sysreg"; - reg = <0x10000000 0x1000>; - - v2m_led_gpios: sys_led@8 { - compatible = "arm,vexpress-sysreg,sys_led"; - gpio-controller; - #gpio-cells = <2>; - }; - - v2m_mmc_gpios: sys_mci@48 { - compatible = "arm,vexpress-sysreg,sys_mci"; - gpio-controller; - #gpio-cells = <2>; - }; - - v2m_flash_gpios: sys_flash@4c { - compatible = "arm,vexpress-sysreg,sys_flash"; - gpio-controller; - #gpio-cells = <2>; - }; - }; - -This block also can also act a bridge to the platform's configuration -bus via "system control" interface, addressing devices with site number, -position in the board stack, config controller, function and device -numbers - see motherboard's TRM for more details. All configuration -controller accessible via this interface must reference the sysreg -node via "arm,vexpress,config-bridge" phandle and define appropriate -topology properties - see main vexpress node documentation for more -details. Each child of such node describes one function and must -define the following properties: -- compatible value : must be one of (corresponding to the TRM): - "arm,vexpress-amp" - "arm,vexpress-dvimode" - "arm,vexpress-energy" - "arm,vexpress-muxfpga" - "arm,vexpress-osc" - "arm,vexpress-power" - "arm,vexpress-reboot" - "arm,vexpress-reset" - "arm,vexpress-scc" - "arm,vexpress-shutdown" - "arm,vexpress-temp" - "arm,vexpress-volt" -- arm,vexpress-sysreg,func : must contain a set of two cells long groups: - - first cell of each group defines the function number - (eg. 1 for clock generator, 2 for voltage regulators etc.) - - second cell of each group defines device number (eg. osc 0, - osc 1 etc.) - - some functions (eg. energy meter, with its 64 bit long counter) - are using more than one function/device number pair - -Example: - mcc { - compatible = "arm,vexpress,config-bus"; - arm,vexpress,config-bridge = <&v2m_sysreg>; - - osc@0 { - compatible = "arm,vexpress-osc"; - arm,vexpress-sysreg,func = <1 0>; - }; - - energy@0 { - compatible = "arm,vexpress-energy"; - arm,vexpress-sysreg,func = <13 0>, <13 1>; - }; - }; |