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| author | Etienne Carriere <etienne.carriere@linaro.org> | 2021-03-08 22:38:06 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-04-12 17:17:11 -0400 |
| commit | 1f213ee4dbf249933c29d5f62fd53ec4754ab4aa (patch) | |
| tree | 8700e2e50bba42109005412e9be787d010f1c4c5 /doc | |
| parent | d46933839f98d8cdb34fc87299b5f2a4ec4bbfec (diff) | |
| download | u-boot-1f213ee4dbf249933c29d5f62fd53ec4754ab4aa.zip u-boot-1f213ee4dbf249933c29d5f62fd53ec4754ab4aa.tar.gz u-boot-1f213ee4dbf249933c29d5f62fd53ec4754ab4aa.tar.bz2 | |
firmware: scmi: voltage regulator
Implement voltage regulators interfaced by the SCMI voltage domain
protocol. The DT bindings are defined in the Linux kernel since
SCMI voltage domain and regulators patches [1] and [2] integration
in v5.11-rc7.
Link: [1] https://github.com/torvalds/linux/commit/0f80fcec08e9c50b8d2992cf26495673765ebaba
Link: [2] https://github.com/torvalds/linux/commit/2add5cacff3531e54c50b0832128299faa9f0563
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/arm/arm,scmi.txt | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/arm/arm,scmi.txt b/doc/device-tree-bindings/arm/arm,scmi.txt index 1f293ea..a76124f 100644 --- a/doc/device-tree-bindings/arm/arm,scmi.txt +++ b/doc/device-tree-bindings/arm/arm,scmi.txt @@ -62,6 +62,20 @@ 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]. + +Required properties: + - reg : shall identify an existent SCMI Voltage Domain. + Sensor bindings for the sensors based on SCMI Message Protocol -------------------------------------------------------------- SCMI provides an API to access the various sensors on the SoC. @@ -105,6 +119,7 @@ Required sub-node properties: [3] Documentation/devicetree/bindings/thermal/thermal.txt [4] Documentation/devicetree/bindings/sram/sram.yaml [5] Documentation/devicetree/bindings/reset/reset.txt +[6] Documentation/devicetree/bindings/regulator/regulator.yaml Example: @@ -169,6 +184,25 @@ 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>; + }; + + ... + }; + }; }; }; |