Commit 7ddc0f71 authored by Henrik Brix Andersen's avatar Henrik Brix Andersen Committed by Carles Cufi
Browse files

drivers: spi: mcux: lpspi: fix error on first configure on MKE1xF 

Fix error writing to the CR register on the first call to SPI configure on
NXP MKE1xF. On the first call, the module clock is not enabled and writing
to the CR register will fail.

Fixes: #66036

Signed-off-by: default avatarHenrik Brix Andersen <hebad@vestas.com>
parent 41c2c3d4

drivers/spi/spi_mcux_lpspi.c

+8 −3
Changes for drivers/spi/spi_mcux_lpspi.c: 8 added lines, 3 removed lines.
Original line number Diff line number Diff line
@@ -249,14 +249,19 @@ static int spi_mcux_configure(const struct device *dev, 
		return -EINVAL;

	}



	/* Setting the baud rate in LPSPI_MasterInit requires module to be disabled */

	if (data->ctx.config != NULL) {

		/* Setting the baud rate in LPSPI_MasterInit requires module to be disabled. Only

		 * disable if already configured, otherwise the clock is not enabled and the

		 * CR register cannot be written.

		 */

		LPSPI_Enable(base, false);

		while ((base->CR & LPSPI_CR_MEN_MASK) != 0U) {

			/* Wait until LPSPI is disabled. Datasheet:

		 * After writing 0, MEN (Module Enable) remains set until the LPSPI has completed

		 * the current transfer and is idle.

			 * After writing 0, MEN (Module Enable) remains set until the LPSPI has

			 * completed the current transfer and is idle.

			 */

		}

	}



	LPSPI_MasterInit(base, &master_config, clock_freq);

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