| Message ID | 20240515-arm-psci-system_reset2-vendor-reboots-v3-2-16dd4f9c0ab4@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Implement vendor resets for PSCI SYSTEM_RESET2 | expand |
On Wed, May 15, 2024 at 04:09:45PM -0700, Elliot Berman wrote: > Add bindings to describe vendor-specific reboot modes. Values here > correspond to valid parameters to vendor-specific reset types in PSCI > SYSTEM_RESET2 call. > > Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> > --- > Documentation/devicetree/bindings/arm/psci.yaml | 43 +++++++++++++++++++++++-- > 1 file changed, 41 insertions(+), 2 deletions(-) > > diff --git a/Documentation/devicetree/bindings/arm/psci.yaml b/Documentation/devicetree/bindings/arm/psci.yaml > index cbb012e217ab..47b5bbe540ce 100644 > --- a/Documentation/devicetree/bindings/arm/psci.yaml > +++ b/Documentation/devicetree/bindings/arm/psci.yaml > @@ -137,8 +137,34 @@ allOf: > required: > - cpu_off > - cpu_on > - > -additionalProperties: false > + - if: > + properties: > + compatible: > + contains: > + const: arm,psci-1.0 > + then: > + properties: > + reset-types: The normal structure is declare all properties and nodes at the top level (outside of if/then schemas) and then add restrictions with if/then schemas. > + type: object > + $ref: /schemas/power/reset/reboot-mode.yaml# additionalProperties: false and a blank line > + properties: > + # "mode-normal" is just SYSTEM_RESET > + mode-normal: false > + patternProperties: > + "^mode-.*$": > + items: > + maxItems: 2 > + description: | > + Describes a vendor-specific reset type. The string after "mode-" > + maps a reboot mode to the parameters in the PSCI SYSTEM_RESET2 call. > + > + Parameters are named mode-xxx = <type[, cookie]>, where xxx > + is the name of the magic reboot mode, type is the lower 31 bits > + of the reset_type, and, optionally, the cookie value. If the cookie > + is not provided, it is defaulted to zero. > + The 31st bit (vendor-resets) will be implicitly set by the driver. > + > +unevaluatedProperties: false > > examples: > - |+ > @@ -261,4 +287,17 @@ examples: > domain-idle-states = <&CLUSTER_RET>, <&CLUSTER_PWRDN>; > }; > }; > + > + - |+ > + > + // Case 5: SYSTEM_RESET2 vendor resets > + psci { > + compatible = "arm,psci-1.0"; > + method = "smc"; > + > + reset-types { > + mode-edl = <0>; > + mode-bootloader = <1 2>; > + }; > + }; > ... > > -- > 2.34.1 >
diff --git a/Documentation/devicetree/bindings/arm/psci.yaml b/Documentation/devicetree/bindings/arm/psci.yaml index cbb012e217ab..47b5bbe540ce 100644 --- a/Documentation/devicetree/bindings/arm/psci.yaml +++ b/Documentation/devicetree/bindings/arm/psci.yaml @@ -137,8 +137,34 @@ allOf: required: - cpu_off - cpu_on - -additionalProperties: false + - if: + properties: + compatible: + contains: + const: arm,psci-1.0 + then: + properties: + reset-types: + type: object + $ref: /schemas/power/reset/reboot-mode.yaml# + properties: + # "mode-normal" is just SYSTEM_RESET + mode-normal: false + patternProperties: + "^mode-.*$": + items: + maxItems: 2 + description: | + Describes a vendor-specific reset type. The string after "mode-" + maps a reboot mode to the parameters in the PSCI SYSTEM_RESET2 call. + + Parameters are named mode-xxx = <type[, cookie]>, where xxx + is the name of the magic reboot mode, type is the lower 31 bits + of the reset_type, and, optionally, the cookie value. If the cookie + is not provided, it is defaulted to zero. + The 31st bit (vendor-resets) will be implicitly set by the driver. + +unevaluatedProperties: false examples: - |+ @@ -261,4 +287,17 @@ examples: domain-idle-states = <&CLUSTER_RET>, <&CLUSTER_PWRDN>; }; }; + + - |+ + + // Case 5: SYSTEM_RESET2 vendor resets + psci { + compatible = "arm,psci-1.0"; + method = "smc"; + + reset-types { + mode-edl = <0>; + mode-bootloader = <1 2>; + }; + }; ...
Add bindings to describe vendor-specific reboot modes. Values here correspond to valid parameters to vendor-specific reset types in PSCI SYSTEM_RESET2 call. Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> --- Documentation/devicetree/bindings/arm/psci.yaml | 43 +++++++++++++++++++++++-- 1 file changed, 41 insertions(+), 2 deletions(-)