On 23/12/2024 13:55, Michal Wilczynski wrote: > The kernel communicates with the E902 core through the mailbox > transport using AON firmware protocol. Add dt-bindings to document it > the dt node. > > Signed-off-by: Michal Wilczynski <m.wilczynski@xxxxxxxxxxx> > --- > .../bindings/firmware/thead,th1520-aon.yaml | 59 +++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 60 insertions(+) > create mode 100644 Documentation/devicetree/bindings/firmware/thead,th1520-aon.yaml > > diff --git a/Documentation/devicetree/bindings/firmware/thead,th1520-aon.yaml b/Documentation/devicetree/bindings/firmware/thead,th1520-aon.yaml > new file mode 100644 > index 000000000000..ca4c276766a3 > --- /dev/null > +++ b/Documentation/devicetree/bindings/firmware/thead,th1520-aon.yaml > @@ -0,0 +1,59 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/firmware/thead,th1520-aon.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: T-HEAD TH1520 AON (Always-On) Firmware Node Drop "Node", unless this is somehow name of device (not a DT node). > + > +description: | > + The Always-On (AON) subsystem in the TH1520 SoC is responsible for managing > + low-power states, system wakeup events, and power management tasks. It is > + designed to operate independently in a dedicated power domain, allowing it to > + remain functional even during the SoC's deep sleep states. > + > + At the heart of the AON subsystem is the E902, a low-power core that executes > + firmware responsible for coordinating tasks such as power domain control, > + clock management, and system wakeup signaling. Communication between the main > + SoC and the AON subsystem is handled through a mailbox interface, which > + enables message-based interactions with the AON firmware. > + > +maintainers: > + - Michal Wilczynski <m.wilczynski@xxxxxxxxxxx> > + > +properties: > + compatible: > + const: thead,th1520-aon > + > + mboxes: > + maxItems: 1 > + > + mbox-names: > + items: > + - const: aon > + > + power-domain: > + $ref: /schemas/power/thead,th1520-power.yaml# > + description: Subnode representing the hardware power domain of the AON subsystem. > + > +additionalProperties: false > + > +required: > + - compatible > + - mboxes > + - mbox-names In all your bindings patches: "required" block goes before additional/unevaluatedProperties. See also example-schema. > + > +examples: > + - | > + firmware { > + aon: aon { Best regards, Krzysztof
