Lines Matching +full:nrf21540 +full:- +full:gpio +full:- +full:if

2 # SPDX-License-Identifier: Apache-2.0
6     This is a representation of the nRF21540 Radio Front-End module.
8     See the "nordic,nrf21540-fem-spi" binding to configure the SPI
11     the FEM and SPI configurations using the spi-if property.
13     Here is an example nRF21540 configuration with a SPI interface
17               compatible = "nordic,nrf-spim";
19               cs-gpios = <&gpio1 3 GPIO_ACTIVE_LOW>;
22               my_spi_if: nrf21540-spi@0 {
23                       compatible = "nordic,nrf21540-fem-spi";
25                       spi-max-frequency = <8000000>;
29       nrf_radio_fem: nrf21540 {
30               compatible = "nordic,nrf21540-fem";
31               tx-en-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
32               rx-en-gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
33               spi-if = <&my_spi_if>;
34               pdn-gpios = <...>;
35               ant-sel-gpios = <...>;
36               mode-gpios = <...>;
37               /* ... other nRF21540 properties go here ... */
44     In the above example, the nRF21540 is configured for use with:
46       - TX_EN on P0.2 (from 'tx-en-gpios')
47       - RX_EN on P0.5 (from 'rx-en-gpios')
48       - SPI communication via SPIM0 (the bus, or parent node, of
50       - CSN on P1.3 (from index 0 in the bus node's 'cs-gpios' property)
53     (nRF21540 MISO, MOSI, and SCK pins) within the SPI bus node
58     Configure any other nRF21540 pins as needed using 'pdn-gpios',
59     'ant-sel-gpios', and 'mode-gpios' properties. If unsure about the
60     format, use 'tx-en-gpios' as an example.
63     the nRF21540 via the 'fem' property in the 'radio' node.
65 compatible: "nordic,nrf21540-fem"
70   tx-en-gpios:
71     type: phandle-array
73         GPIO of the SOC controlling TX_EN pin of the nRF21540
74   rx-en-gpios:
75     type: phandle-array
77         GPIO of the SOC controlling RX_EN pin of the nRF21540
78   pdn-gpios:
79     type: phandle-array
81         GPIO of the SOC controlling PDN pin of the nRF21540
82   ant-sel-gpios:
83     type: phandle-array
85         GPIO of the SOC controlling ANT-SEL pin of the nRF21540
86   mode-gpios:
87     type: phandle-array
89         GPIO of the SOC controlling MODE pin of the nRF21540
90   spi-if:
93         Reference to the nordic,nrf21540-fem-spi SPI bus interface.
96   tx-en-settle-time-us:
102         Default value is based on Table 6 of the nRF21540 Product
105   rx-en-settle-time-us:
111         Default value is based on Table 6 of the nRF21540 Product
114   pdn-settle-time-us:
120         Default value is based on Table 6 of the nRF21540 Product
123   trx-hold-time-us:
127         Power-off time in microseconds when changing from RX or TX to PG.
129         Default value is based on Table 6 of the nRF21540 Product
132   supply-voltage-mv:
135         nRF21540 supply voltage in mV.
137         This is used if compensation for nRF21540 supply voltage is supported