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-rw-r--r--ports/mimxrt10xx/common-hal/busio/SPI.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/ports/mimxrt10xx/common-hal/busio/SPI.c b/ports/mimxrt10xx/common-hal/busio/SPI.c
index 1b72921d3..13a808618 100644
--- a/ports/mimxrt10xx/common-hal/busio/SPI.c
+++ b/ports/mimxrt10xx/common-hal/busio/SPI.c
@@ -234,6 +234,10 @@ void common_hal_busio_spi_deinit(busio_spi_obj_t *self) {
bool common_hal_busio_spi_configure(busio_spi_obj_t *self,
uint32_t baudrate, uint8_t polarity, uint8_t phase, uint8_t bits) {
+ if (baudrate > 30000000) {
+ baudrate = 30000000; // "Absolute maximum frequency of operation (fop) is 30 MHz" -- IMXRT1010CEC.pdf
+ }
+
LPSPI_Enable(self->spi, false);
uint32_t tcrPrescaleValue;
self->baudrate = LPSPI_MasterSetBaudRate(self->spi, baudrate, LPSPI_MASTER_CLK_FREQ, &tcrPrescaleValue);