bindings/mailbox/arm%2Cmhuv2.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
14   The Arm Message Handling Unit (MHU) Version 2 is a mailbox controller that has
111       mhu: mailbox@2b1f0000 {
114           arm,mhuv2-protocols = <0 2>, <1 1>, <1 5>, <1 7>;
133       It is always set to 2. The first argument in the consumers 'mboxes'
144       mboxes = <&mhu 2 0>; // Channel Window Group 2, data transfer protocol with 1 window.
148     const: 2
172         #address-cells = <2>;
173         #size-cells = <2>;
175         mhu_tx: mailbox@2b1f0000 {
176             #mbox-cells = <2>;
182             arm,mhuv2-protocols = <1 5>, <1 2>, <1 5>, <1 7>, <0 2>;
185         mhu_rx: mailbox@2b1f1000 {
186             #mbox-cells = <2>;
192             arm,mhuv2-protocols = <1 1>, <1 7>, <0 2>;
198             clocks = <&adma_lpcg 0>, <&adma_lpcg 1>, <&adma_lpcg 2>;
200             power-domains = <&pd 0>, <&pd 1>, <&pd 2>, <&pd 3>;
202             mboxes = <&mhu_tx 2 0>, //data-transfer protocol with 5 windows, mhu-tx
204                      <&mhu_rx 2 27>, //doorbell protocol channel 2, doorbell 27, mhu-rx