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nrf: support disabling SPIM3

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SPIM3 is faster than all other SPI blocks, and is capable of generating
a 32 MHz clock.  However, it cannot be used at the same time as the BLE
radio without dedicating an additional 8 kB of RAM to it.

Therefore, some boards may want to disable this.  Support pre-defining
NRFX_SPIM3_ENABLED on the command line to disable it on some bords.

Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2020-05-07 17:00:51 +08:00
parent 79c055f958
commit 370fc7293a
1 changed files with 2 additions and 0 deletions
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2
ports/nrf/nrfx_config.h
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@ -41,12 +41,14 @@
#define NRFX_SPIM1_ENABLED 1
#endif
#define NRFX_SPIM2_ENABLED 1
#ifndef NRFX_SPIM3_ENABLED
#if defined(NRF52840_XXAA) || defined(NRF52833_XXAA)
#define NRFX_SPIM_EXTENDED_ENABLED 1
#define NRFX_SPIM3_ENABLED 1
#elif CIRCUITPY_NRF_NUM_I2C == 2
#define NRFX_SPIM3_ENABLED 0
#endif
#endif
#define NRFX_SPIM_DEFAULT_CONFIG_IRQ_PRIORITY 7