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spi: atmel-quadspi: Write QSPI_IAR only when needed

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

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201207135959.154124-4-tudor.ambarus@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Tudor Ambarus 2020-12-07 15:59:58 +02:00 committed by Mark Brown
parent a6ff3a784f
commit d00364b6a6
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 4 deletions
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8
drivers/spi/atmel-quadspi.c
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@ -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);
}