Unverified Commit d00364b6 authored by Tudor Ambarus's avatar Tudor Ambarus Committed by Mark Brown
Browse files

spi: atmel-quadspi: Write QSPI_IAR only when needed 



The address must be written in QSPI_IAR only when we have
a instruction frame with address but no data.

Signed-off-by: default avatarTudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201207135959.154124-4-tudor.ambarus@microchip.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent a6ff3a78

drivers/spi/atmel-quadspi.c

+4 −4
Original line number Diff line number Diff line
@@ -385,9 +385,11 @@ static int atmel_qspi_set_cfg(struct atmel_qspi *aq, 
	/* Clear pending interrupts */

	(void)atmel_qspi_read(aq, QSPI_SR);



	if (aq->caps->has_ricr) {

		/* Set QSPI Instruction Frame registers */

	/* Set QSPI Instruction Frame registers. */

	if (op->addr.nbytes && !op->data.nbytes)

		atmel_qspi_write(iar, aq, QSPI_IAR);



	if (aq->caps->has_ricr) {

		if (op->data.dir == SPI_MEM_DATA_IN)

			atmel_qspi_write(icr, aq, QSPI_RICR);

		else
@@ -397,8 +399,6 @@ static int atmel_qspi_set_cfg(struct atmel_qspi *aq, 
		if (op->data.nbytes && op->data.dir == SPI_MEM_DATA_OUT)

			ifr |= QSPI_IFR_SAMA5D2_WRITE_TRSFR;



		/* Set QSPI Instruction Frame registers */

		atmel_qspi_write(iar, aq, QSPI_IAR);

		atmel_qspi_write(icr, aq, QSPI_ICR);

		atmel_qspi_write(ifr, aq, QSPI_IFR);

	}