From: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
commit cac8c821059639b015586abf61623c62cc549a13 upstream.
Following error was seen when mounting a 16MByte ubifs:
UBIFS error (ubi0:0 pid 1893): check_lpt_type.constprop.6: invalid type (15) in LPT node type
QSPI_IFR.TFRTYP was not set correctly. When data transfer is enabled
and one wants to access the serial memory through AHB in order to:
- read in the serial memory, but not a memory data, for example
a JEDEC-ID, QSPI_IFR.TFRTYP must be written to '0' (both sama5d2
and sam9x60).
- read in the serial memory, and particularly a memory data,
TFRTYP must be written to '1' (both sama5d2 and sam9x60).
- write in the serial memory, but not a memory data, for example
writing the configuration or the QSPI_SR, TFRTYP must be written
to '2' for sama5d2 and to '0' for sam9x60.
- write in the serial memory in particular to program a memory data,
TFRTYP must be written to '3' for sama5d2 and to '1' for sam9x60.
Fix the setting of the QSPI_IFR.TFRTYP field.
Fixes: 2d30ac5ed633 ("mtd: spi-nor: atmel-quadspi: Use spi-mem interface for atmel-quadspi driver")
Cc: <stable@xxxxxxxxxxxxxxx> # v5.0+
Reported-by: Tom Burkart <tom@xxxxxxxxxx>
Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201207135959.154124-2-tudor.ambarus@xxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/spi/atmel-quadspi.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
--- a/drivers/spi/atmel-quadspi.c
+++ b/drivers/spi/atmel-quadspi.c
@@ -284,10 +284,14 @@ static int atmel_qspi_set_cfg(struct atm
if (dummy_cycles)
ifr |= QSPI_IFR_NBDUM(dummy_cycles);
- /* Set data enable */
- if (op->data.nbytes)
+ /* Set data enable and data transfer type. */
+ if (op->data.nbytes) {
ifr |= QSPI_IFR_DATAEN;
+ if (op->addr.nbytes)
+ ifr |= QSPI_IFR_TFRTYP_MEM;
+ }
+
/*
* If the QSPI controller is set in regular SPI mode, set it in
* Serial Memory Mode (SMM).
@@ -312,7 +316,7 @@ static int atmel_qspi_set_cfg(struct atm
writel_relaxed(icr, aq->regs + QSPI_WICR);
writel_relaxed(ifr, aq->regs + QSPI_IFR);
} else {
- if (op->data.dir == SPI_MEM_DATA_OUT)
+ if (op->data.nbytes && op->data.dir == SPI_MEM_DATA_OUT)
ifr |= QSPI_IFR_SAMA5D2_WRITE_TRSFR;
/* Set QSPI Instruction Frame registers */
