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| author | Arnd Bergmann <arnd@arndb.de> | 2020-11-27 23:06:06 +0300 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2020-11-27 23:06:06 +0300 |
| commit | 270a5bbb090cd235a75739dc76684f8e93f3516b (patch) | |
| tree | 4433ad88d6b568b1e0f88e2c174e3fa58d4c60e2 /Documentation/devicetree/bindings/arm | |
| parent | 718e43b5f850a8fb52933ac5ecf29f5eef48a349 (diff) | |
| parent | f83eb664cdb45169338b9633f22eaafc23764f05 (diff) | |
| download | linux-270a5bbb090cd235a75739dc76684f8e93f3516b.tar.xz | |
Merge tag 'scmi-updates-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/drivers
ARM SCMI updates for v5.11
Two main additions this time:
1. Support for SCMI v3.0 sensor extensions
2. Support for voltage domain management protocol added newly to SCMI v3.0
* tag 'scmi-updates-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
firmware: arm_scmi: Remove residual _le structs naming
firmware: arm_scmi: Add SCMI v3.0 sensor notifications
firmware: arm_scmi: Add SCMI v3.0 sensor configuration support
firmware: arm_scmi: Add SCMI v3.0 sensors timestamped reads
hwmon: (scmi) Update hwmon internal scale data type
firmware: arm_scmi: Add support to enumerated SCMI voltage domain device
firmware: arm_scmi: Add voltage domain management protocol support
dt-bindings: arm: Add support for SCMI Regulators
firmware: arm_scmi: Add SCMI v3.0 sensors descriptors extensions
firmware: arm_scmi: Add full list of sensor type enumeration
firmware: arm_scmi: Rework scmi_sensors_protocol_init
firmware: arm_scmi: Fix missing destroy_workqueue()
Link: https://lore.kernel.org/r/20201124122412.22386-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/arm')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/arm,scmi.txt | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/arm,scmi.txt b/Documentation/devicetree/bindings/arm/arm,scmi.txt index 55deb68230eb..6e011ca97079 100644 --- a/Documentation/devicetree/bindings/arm/arm,scmi.txt +++ b/Documentation/devicetree/bindings/arm/arm,scmi.txt @@ -62,6 +62,29 @@ Required properties: - #power-domain-cells : Should be 1. Contains the device or the power domain ID value used by SCMI commands. +Regulator bindings for the SCMI Regulator based on SCMI Message Protocol +------------------------------------------------------------ +An SCMI Regulator is permanently bound to a well defined SCMI Voltage Domain, +and should be always positioned as a root regulator. +It does not support any current operation. + +SCMI Regulators are grouped under a 'regulators' node which in turn is a child +of the SCMI Voltage protocol node inside the desired SCMI instance node. + +This binding uses the common regulator binding[6] but, due to SCMI abstractions, +supports only a subset of its properties as specified below amongst Optional +properties. + +Required properties: + - reg : shall identify an existent SCMI Voltage Domain. + +Optional properties: + - regulator-name + - regulator-min-microvolt / regulator-max-microvolt + - regulator-always-on / regulator-boot-on + - regulator-max-step-microvolt + - regulator-coupled-with / regulator-coupled-max-spread + Sensor bindings for the sensors based on SCMI Message Protocol -------------------------------------------------------------- SCMI provides an API to access the various sensors on the SoC. @@ -105,6 +128,7 @@ Required sub-node properties: [3] Documentation/devicetree/bindings/thermal/thermal*.yaml [4] Documentation/devicetree/bindings/sram/sram.yaml [5] Documentation/devicetree/bindings/reset/reset.txt +[6] Documentation/devicetree/bindings/regulator/regulator.yaml Example: @@ -169,6 +193,25 @@ firmware { reg = <0x16>; #reset-cells = <1>; }; + + scmi_voltage: protocol@17 { + reg = <0x17>; + + regulators { + regulator_devX: regulator@0 { + reg = <0x0>; + regulator-max-microvolt = <3300000>; + }; + + regulator_devY: regulator@9 { + reg = <0x9>; + regulator-min-microvolt = <500000>; + regulator-max-microvolt = <4200000>; + }; + + ... + }; + }; }; }; |