While the MSIOF variants in older SuperH and SH/R-Mobile SoCs support
bits-per-word values in the full range 8..32, the variants present in
R-Car Gen2 and Gen3 SoCs are restricted to 8, 16, 24, or 32.
Obtain the value from family-specific sh_msiof_chipdata to fix this.
Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
Tested on SH-Mobile AG5 with 12 bits per word.
drivers/spi/spi-sh-msiof.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index 6e83368874839d09..48535e95102c9b08 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -32,6 +32,7 @@
#include <asm/unaligned.h>
struct sh_msiof_chipdata {
+ u32 bits_per_word_mask;
u16 tx_fifo_size;
u16 rx_fifo_size;
u16 ctlr_flags;
@@ -1072,6 +1073,7 @@ static int sh_msiof_transfer_one(struct spi_controller *ctlr,
}
static const struct sh_msiof_chipdata sh_data = {
+ .bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32),
.tx_fifo_size = 64,
.rx_fifo_size = 64,
.ctlr_flags = 0,
@@ -1079,6 +1081,8 @@ static const struct sh_msiof_chipdata sh_data = {
};
static const struct sh_msiof_chipdata rcar_gen2_data = {
+ .bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16) |
+ SPI_BPW_MASK(24) | SPI_BPW_MASK(32),
.tx_fifo_size = 64,
.rx_fifo_size = 64,
.ctlr_flags = SPI_CONTROLLER_MUST_TX,
@@ -1086,6 +1090,8 @@ static const struct sh_msiof_chipdata rcar_gen2_data = {
};
static const struct sh_msiof_chipdata rcar_gen3_data = {
+ .bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16) |
+ SPI_BPW_MASK(24) | SPI_BPW_MASK(32),
.tx_fifo_size = 64,
.rx_fifo_size = 64,
.ctlr_flags = SPI_CONTROLLER_MUST_TX,
@@ -1410,7 +1416,7 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
ctlr->setup = sh_msiof_spi_setup;
ctlr->prepare_message = sh_msiof_prepare_message;
ctlr->slave_abort = sh_msiof_slave_abort;
- ctlr->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32);
+ ctlr->bits_per_word_mask = chipdata->bits_per_word_mask;
ctlr->auto_runtime_pm = true;
ctlr->transfer_one = sh_msiof_transfer_one;
--
2.17.1
