drivers: spi: spi_mcux_ecspi: Fix data size when using 16/32 bit transfers

pdgendt · nashif · commit 8b5fee6186ed · 2025-01-22T15:11:24.000-05:00
The data size is set using a burst length, the data size for 8/16/32 is always 1 in those cases. Signed-off-by: Pieter De Gendt <pieter.degendt@basalte.be> (cherry picked from commit 0e8aed7)
diff --git a/drivers/spi/spi_mcux_ecspi.c b/drivers/spi/spi_mcux_ecspi.c
@@ -92,7 +92,8 @@ static void spi_mcux_transfer_next_packet(const struct device *dev)
 		transfer.txData = NULL;
 	}
 
-	transfer.dataSize = data->dfs;
+	/* Burst length is set in the configure step */
+	transfer.dataSize = 1;
 
 	status = ECSPI_MasterTransferNonBlocking(base, &data->handle, &transfer);
 	if (status != kStatus_Success) {

Original file line number	Diff line number	Diff line change
`@@ -92,7 +92,8 @@ static void spi_mcux_transfer_next_packet(const struct device *dev)`
`92`	`92`	`transfer.txData = NULL;`
`93`	`93`	`}`
`94`	`94`
`95`		`- transfer.dataSize = data->dfs;`
	`95`	`+ /* Burst length is set in the configure step */`
	`96`	`+ transfer.dataSize = 1;`
`96`	`97`
`97`	`98`	`status = ECSPI_MasterTransferNonBlocking(base, &data->handle, &transfer);`
`98`	`99`	`if (status != kStatus_Success) {`