Unverified Commit 41c91c2e authored by James Clark's avatar James Clark Committed by Mark Brown
Browse files

spi: spi-fsl-lpspi: Parameterize reading num-cs from hardware 



Add query_hw_for_num_cs in devtype to avoid directly checking compatible
string "fsl,imx93-spi".

No functionality change.

Signed-off-by: default avatarJames Clark <james.clark@linaro.org>
Reviewed-by: default avatarFrank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20250828-james-nxp-lpspi-v2-8-6262b9aa9be4@linaro.org


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 9bbfb1ec

drivers/spi/spi-fsl-lpspi.c

+3 −1
Original line number Diff line number Diff line
@@ -87,6 +87,7 @@ 


struct fsl_lpspi_devtype_data {

	u8 prescale_max : 3; /* 0 == no limit */

	bool query_hw_for_num_cs : 1;

};



struct lpspi_config {
@@ -137,6 +138,7 @@ struct fsl_lpspi_data { 
 */

static const struct fsl_lpspi_devtype_data imx93_lpspi_devtype_data = {

	.prescale_max = 1,

	.query_hw_for_num_cs = true,

};



static const struct fsl_lpspi_devtype_data imx7ulp_lpspi_devtype_data = {
@@ -932,7 +934,7 @@ static int fsl_lpspi_probe(struct platform_device *pdev) 
	fsl_lpspi->rxfifosize = 1 << ((temp >> 8) & 0x0f);

	if (of_property_read_u32((&pdev->dev)->of_node, "num-cs",

				 &num_cs)) {

		if (of_device_is_compatible(pdev->dev.of_node, "fsl,imx93-spi"))

		if (devtype_data->query_hw_for_num_cs)

			num_cs = ((temp >> 16) & 0xf);

		else

			num_cs = 1;