| # Copyright (c) 2021 Nordic Semiconductor ASA |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| # NOTE: This file is replicated in nrf9160dk_nrf9160 and nrf9160dk_nrf52840. |
| # Any changes should be done in both instances. |
| |
| description: | |
| nRF9160 DK GPIO interface between nRF9160 and nRF52840 |
| |
| This interface can be used for inter-SoC communication on the DK. |
| The connections are as follows: |
| |
| | nRF9160 | | nRF52840 | |
| | P0.17 | -- nRF interface line 0 -- | P0.17 | |
| | P0.18 | -- nRF interface line 1 -- | P0.20 | |
| | P0.19 | -- nRF interface line 2 -- | P0.15 | |
| | P0.21 | -- nRF interface line 3 -- | P0.22 | |
| | P0.22 | -- nRF interface line 4 -- | P1.04 | |
| | P0.23 | -- nRF interface line 5 -- | P1.02 | |
| | COEX0 | -- nRF interface line 6 -- | P1.13 | |
| | COEX1 | -- nRF interface line 7 -- | P1.11 | |
| | COEX2 | -- nRF interface line 8 -- | P1.15 | |
| | P0.24 | -- nRF interface line 9 -- | P0.18 (nRESET) | (in v0.14.0 or later) |
| |
| Before particular lines of this interface can be used, the corresponding |
| analog switches that control the routing of involved nRF9160 pins must be |
| configured to provide the optional routing (i.e. to nRF52840). To achieve |
| this, set the status of respective devicetree nodes in the firmware for |
| the nrf9160dk_nrf52840 board to "okay": |
| - `nrf_interface_pins_0_2_routing` to enable lines 0-2 |
| - `nrf_interface_pins_3_5_routing` to enable lines 3-5 |
| - `nrf_interface_pins_6_8_routing` to enable lines 6-8 |
| - `nrf_interface_pin_9_routing` to enable line 9 (this line is only |
| available in nRF9160 DK v0.14.0 or later) |
| |
| NOTE: In nRF9160 DK revisions earlier than v0.14.0, when the above signals |
| from nRF9160 are routed to nRF52840, they are not available on the DK |
| connectors. |
| |
| compatible: "nordic,nrf9160dk-nrf52840-interface" |
| |
| include: [gpio-nexus.yaml, base.yaml] |
