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drivers: flash: nrf_qspi_nor: support specifying only 2 io-pins

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Currently user is forced to configure an array of 4 IO pins. This makes
no sense when there are only 2 IO pins connected on board.

Configure 3rd and 4th pin in internal structure as
NRF_QSPI_PIN_NOT_CONNECTED if only 2 were specified in device-tree.

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
This commit is contained in:
Marcin Niestroj 2020-05-28 23:14:20 +02:00 • committed by Carles Cufí
commit 5bf4ee4f6c
1 changed files with 6 additions and 0 deletions
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6
drivers/flash/nrf_qspi_nor.c
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@ -29,6 +29,7 @@
/* for accessing devicetree properties of the bus node */
#define QSPI_NODE DT_BUS(DT_DRV_INST(0))
#define QSPI_PROP_AT(prop, idx) DT_PROP_BY_IDX(QSPI_NODE, prop, idx)
#define QSPI_PROP_LEN(prop) DT_PROP_LEN(QSPI_NODE, prop)
LOG_MODULE_REGISTER(qspi_nor, CONFIG_FLASH_LOG_LEVEL);
@ -381,8 +382,13 @@ static inline void qspi_fill_init_struct(nrfx_qspi_config_t *initstruct)
initstruct->pins.csn_pin = QSPI_PROP_AT(csn_pins, 0);
initstruct->pins.io0_pin = QSPI_PROP_AT(io_pins, 0);
initstruct->pins.io1_pin = QSPI_PROP_AT(io_pins, 1);
#if QSPI_PROP_LEN(io_pins) > 2
initstruct->pins.io2_pin = QSPI_PROP_AT(io_pins, 2);
initstruct->pins.io3_pin = QSPI_PROP_AT(io_pins, 3);
#else
initstruct->pins.io2_pin = NRF_QSPI_PIN_NOT_CONNECTED;
initstruct->pins.io3_pin = NRF_QSPI_PIN_NOT_CONNECTED;
#endif
/* Configure Protocol interface */
#if DT_INST_NODE_HAS_PROP(0, readoc_enum)