On Fri, Oct 08, 2021 at 04:40:30PM +0800, Allen-KH Cheng wrote: > This patch adds document for mediatek adsp mbox > > Signed-off-by: Allen-KH Cheng <Allen-KH.Cheng@xxxxxxxxxxxx> > --- > .../bindings/mailbox/mtk,adsp-mbox.yaml | 76 +++++++++++++++++++ > 1 file changed, 76 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml > > diff --git a/Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml b/Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml > new file mode 100644 > index 000000000000..9028e403ceda > --- /dev/null > +++ b/Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml > @@ -0,0 +1,76 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/mailbox/mtk,adsp-mbox.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Mediatek ADSP mailbox > + > +maintainers: > + - Allen-KH Cheng <Allen-KH.Cheng@xxxxxxxxxxxx> > + > +description: | > + The MTK ADSP mailbox Inter-Processor Communication (IPC) enables the SoC > + to ommunicate with ADSP by passing messages through two mailbox channels. > + The MTK ADSP mailbox IPC also provides the ability for one processor to > + signal the other processor using interrupts. > + > + mbox0 is handling ipc reply > + mbox1 is handling ipc request > + > +properties: > + compatible: > + items: > + - const: mediatek,mt8195-adsp-mbox > + > + "#mbox-cells": > + const: 1 > + > + reg: > + description: > + Physical address base for dsp mbox base registers. > + maxItems: 2 > + minItems: 2 > + > + reg-names: > + items: > + - const: reg_mbox0 > + - const: reg_mbox1 'reg_' is redundant. > + > + interrupts: > + description: > + adsp mbox interrupt > + maxItems: 2 > + minItems: 2 > + > + interrupt-names: > + items: > + - const: irq_mbox0 > + - const: irq_mbox1 'irq_' is redundant. Is this really 1 h/w block? Kind of looks like 2 instances of a block. > + > +required: > + - compatible > + - "#mbox-cells" > + - reg > + - reg-names > + - interrupts > + - interrupt-names > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + > + adsp_mailbox:adsp_mailbox@10816000 { > + compatible = "mediatek,mt8195-adsp-mbox"; > + #mbox-cells = <1>; > + reg = <0x10816000 0x1000>, > + <0x10817000 0x1000>; > + reg-names = "reg_mbox0", "reg_mbox1"; > + interrupts = <GIC_SPI 702 IRQ_TYPE_LEVEL_HIGH 0>, > + <GIC_SPI 703 IRQ_TYPE_LEVEL_HIGH 0>; > + interrupt-names = "irq_mbox0", "irq_mbox1"; > + }; > + > -- > 2.18.0 > >
