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Searched +full:mhu +full:- +full:doorbell (Results 1 – 4 of 4) sorted by relevance

/freebsd/sys/contrib/device-tree/Bindings/mailbox/
H A Darm,mhu.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mailbox/arm,mhu.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ARM MHU Mailbox Controller
10 - Jassi Brar <jaswinder.singh@linaro.org>
13 The ARM's Message-Handling-Unit (MHU) is a mailbox controller that has 3
14 independent channels/links to communicate with remote processor(s). MHU links
21 The MHU hardware also allows operations in doorbell mode. The MHU drives the
22 interrupt signal using a 32-bit register, with all 32-bits logically ORed
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H A Darm,mhuv2.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Tushar Khandelwal <tushar.khandelwal@arm.com>
11 - Viresh Kumar <viresh.kumar@linaro.org>
14 The Arm Message Handling Unit (MHU) Version 2 is a mailbox controller that has
15 between 1 and 124 channel windows (each 32-bit wide) to provide unidirectional
20 be written to or read from. If a pair of MHU controllers is implemented
27 An MHU controller must be specified along with the supported transport
33 - Data-transfer: Each transfer is made of one or more words, using one or more
[all …]
/freebsd/sys/dev/mailbox/arm/
H A Darm_doorbell.c1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
64 { -1, 0 }
84 reg = bus_read_4(sc->res[0], MHU_CHAN_RX_LP + MHU_INTR_STAT); in arm_doorbell_lp_intr()
88 bus_write_4(sc->res[0], MHU_CHAN_RX_LP + MHU_INTR_CLEAR, in arm_doorbell_lp_intr()
90 if (db->func != NULL) in arm_doorbell_lp_intr()
91 db->func(db->arg); in arm_doorbell_lp_intr()
106 reg = bus_read_4(sc->res[0], MHU_CHAN_RX_HP + MHU_INTR_STAT); in arm_doorbell_hp_intr()
110 bus_write_4(sc->res[0], MHU_CHAN_RX_HP + MHU_INTR_CLEAR, in arm_doorbell_hp_intr()
112 if (db->func != NULL) in arm_doorbell_hp_intr()
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/freebsd/sys/contrib/device-tree/src/arm64/arm/
H A Djuno-scmi.dtsi3 power-domains = <&scmi_devpd 8>;
7 power-domains = <&scmi_devpd 8>;
11 power-domains = <&scmi_devpd 8>;
15 power-domains = <&scmi_devpd 8>;
19 power-domains = <&scmi_devpd 8>;
23 power-domains = <&scmi_devpd 8>;
27 power-domains = <&scmi_devpd 8>;
31 power-domains = <&scmi_devpd 8>;
42 /delete-node/ scpi;
47 mbox-name
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