drivers: spi_nxp_lpspi: allow use of SPI_HOLD_ON_CS flag for lpspi v1

MikhailSiomin · jhedberg · commit 83f1bd7341de · 2025-08-13T14:33:50.000+03:00
Allow use of SPI_HOLD_ON_CS flag for lpspi with major version 1
when cs is controlled by gpio.

Signed-off-by: Mikhail Siomin &lt;victorovich.01@mail.ru&gt;
diff --git a/drivers/spi/spi_nxp_lpspi/spi_nxp_lpspi.c b/drivers/spi/spi_nxp_lpspi/spi_nxp_lpspi.c
@@ -371,7 +371,8 @@ static int transceive(const struct device *dev, const struct spi_config *spi_cfg
 		goto error;
 	}
 
-	if (data->major_version < 2 && spi_cfg->operation & SPI_HOLD_ON_CS) {
+	if (data->major_version < 2 && spi_cfg->operation & SPI_HOLD_ON_CS &&
+	    !spi_cs_is_gpio(spi_cfg)) {
 		/* on this version of LPSPI, due to errata in design
 		 * CS must be deasserted in order to clock all words,
 		 * so HOLD_ON_CS flag cannot be supported.

Original file line number	Diff line number	Diff line change
`@@ -371,7 +371,8 @@ static int transceive(const struct device dev, const struct spi_config spi_cfg`
`371`	`371`	`goto error;`
`372`	`372`	`}`
`373`	`373`
`374`		`- if (data->major_version < 2 && spi_cfg->operation & SPI_HOLD_ON_CS) {`
	`374`	`+ if (data->major_version < 2 && spi_cfg->operation & SPI_HOLD_ON_CS &&`
	`375`	`+ !spi_cs_is_gpio(spi_cfg)) {`
`375`	`376`	`/* on this version of LPSPI, due to errata in design`
`376`	`377`	`* CS must be deasserted in order to clock all words,`
`377`	`378`	`* so HOLD_ON_CS flag cannot be supported.`