[PATCH 1/2] spi: soft_spi: Support the recommended soft spi properties

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <festevam@denx.de>

According to Documentation/devicetree/bindings/spi/spi-gpio.yaml
from Linux, the recommended spio-gpio properties are:

sck-gpios, miso-gpios and mosi-gpios.

gpio-sck, gpio-mosi and gpio-miso are considered deprecated.

Currently, U-Boot only supports the deprecated properties.

Allow the soft_spi driver to support both the new and old properties.

Signed-off-by: Fabio Estevam <festevam@denx.de>
---
 drivers/spi/soft_spi.c | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/soft_spi.c b/drivers/spi/soft_spi.c
index f3602a25ba30..0fa14339bdcd 100644
--- a/drivers/spi/soft_spi.c
+++ b/drivers/spi/soft_spi.c
@@ -248,19 +248,32 @@ static int soft_spi_probe(struct udevice *dev)
 	cs_flags = (slave && slave->mode & SPI_CS_HIGH) ? 0 : GPIOD_ACTIVE_LOW;
 	clk_flags = (slave && slave->mode & SPI_CPOL) ? GPIOD_ACTIVE_LOW : 0;
 
-	if (gpio_request_by_name(dev, "cs-gpios", 0, &plat->cs,
-				 GPIOD_IS_OUT | cs_flags) ||
-	    gpio_request_by_name(dev, "gpio-sck", 0, &plat->sclk,
-				 GPIOD_IS_OUT | clk_flags))
+	ret = gpio_request_by_name(dev, "cs-gpios", 0, &plat->cs,
+				   GPIOD_IS_OUT | cs_flags);
+	if (ret)
+		return -EINVAL;
+
+	ret = gpio_request_by_name(dev, "gpio-sck", 0, &plat->sclk,
+				   GPIOD_IS_OUT | clk_flags);
+	if (ret)
+		ret = gpio_request_by_name(dev, "sck-gpios", 0, &plat->sclk,
+					   GPIOD_IS_OUT | clk_flags);
+	if (ret)
 		return -EINVAL;
 
 	ret = gpio_request_by_name(dev, "gpio-mosi", 0, &plat->mosi,
 				   GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
+	if (ret)
+		ret = gpio_request_by_name(dev, "mosi-gpios", 0, &plat->mosi,
+					   GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
 	if (ret)
 		plat->flags |= SPI_MASTER_NO_TX;
 
 	ret = gpio_request_by_name(dev, "gpio-miso", 0, &plat->miso,
 				   GPIOD_IS_IN);
+	if (ret)
+		ret = gpio_request_by_name(dev, "gpio-miso", 0, &plat->miso,
+					   GPIOD_IS_IN);
 	if (ret)
 		plat->flags |= SPI_MASTER_NO_RX;
 
-- 
2.34.1