Merge https://gitlab.denx.de/u-boot/custodians/u-boot-marvell

- Octeon TX: Add NAND driver (Suneel)
- Octeon TX: Add NIC driver driver (Suneel)
- Octeon TX2: Add NIC driver driver (Suneel)
- Armada 8040: Add iEi Puzzle-M80 board support (Luka)
- Armada A37xx SPI: Add support for CS-GPIO (George)
- Espressobin: Use Linux model/compatible strings (Andre)
- Espressobin: Add armada-3720-espressobin-emmc.dts from Linux (Andre)
- Armada A37xx: Small cleanup of config header (Pali)

1 files changed, 35 insertions, 6 deletions

diff --git a/drivers/spi/mvebu_a3700_spi.c b/drivers/spi/mvebu_a3700_spi.c
index e860b9ec64b..eb13cf349ef 100644
--- a/drivers/spi/mvebu_a3700_spi.c
+++ b/drivers/spi/mvebu_a3700_spi.c
@@ -15,6 +15,7 @@
 #include <asm/io.h>
 #include <dm/device_compat.h>
 #include <linux/bitops.h>
+#include <asm/gpio.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -27,6 +28,7 @@ DECLARE_GLOBAL_DATA_PTR;
 #define MVEBU_SPI_A3700_SPI_EN_0		BIT(16)
 #define MVEBU_SPI_A3700_CLK_PRESCALE_MASK	0x1f
 
+#define MAX_CS_COUNT	4
 
 /* SPI registers */
 struct spi_reg {
@@ -39,16 +41,23 @@ struct spi_reg {
 struct mvebu_spi_platdata {
 	struct spi_reg *spireg;
 	struct clk clk;
+	struct gpio_desc cs_gpios[MAX_CS_COUNT];
 };
 
-static void spi_cs_activate(struct spi_reg *reg, int cs)
+static void spi_cs_activate(struct mvebu_spi_platdata *plat, int cs)
 {
-	setbits_le32(&reg->ctrl, MVEBU_SPI_A3700_SPI_EN_0 << cs);
+	if (CONFIG_IS_ENABLED(DM_GPIO) && dm_gpio_is_valid(&plat->cs_gpios[cs]))
+		dm_gpio_set_value(&plat->cs_gpios[cs], 1);
+	else
+		setbits_le32(&plat->spireg->ctrl, MVEBU_SPI_A3700_SPI_EN_0 << cs);
 }
 
-static void spi_cs_deactivate(struct spi_reg *reg, int cs)
+static void spi_cs_deactivate(struct mvebu_spi_platdata *plat, int cs)
 {
-	clrbits_le32(&reg->ctrl, MVEBU_SPI_A3700_SPI_EN_0 << cs);
+	if (CONFIG_IS_ENABLED(DM_GPIO) && dm_gpio_is_valid(&plat->cs_gpios[cs]))
+		dm_gpio_set_value(&plat->cs_gpios[cs], 0);
+	else
+		clrbits_le32(&plat->spireg->ctrl, MVEBU_SPI_A3700_SPI_EN_0 << cs);
 }
 
 /**
@@ -150,7 +159,7 @@ static int mvebu_spi_xfer(struct udevice *dev, unsigned int bitlen,
 	/* Activate CS */
 	if (flags & SPI_XFER_BEGIN) {
 		debug("SPI: activate cs.\n");
-		spi_cs_activate(reg, spi_chip_select(dev));
+		spi_cs_activate(plat, spi_chip_select(dev));
 	}
 
 	/* Send and/or receive */
@@ -169,7 +178,7 @@ static int mvebu_spi_xfer(struct udevice *dev, unsigned int bitlen,
 			return ret;
 
 		debug("SPI: deactivate cs.\n");
-		spi_cs_deactivate(reg, spi_chip_select(dev));
+		spi_cs_deactivate(plat, spi_chip_select(dev));
 	}
 
 	return 0;
@@ -247,6 +256,26 @@ static int mvebu_spi_probe(struct udevice *bus)
 
 	writel(data, &reg->cfg);
 
+	/* Set up CS GPIOs in device tree, if any */
+	if (CONFIG_IS_ENABLED(DM_GPIO) && gpio_get_list_count(bus, "cs-gpios") > 0) {
+		int i;
+
+		for (i = 0; i < ARRAY_SIZE(plat->cs_gpios); i++) {
+			ret = gpio_request_by_name(bus, "cs-gpios", i, &plat->cs_gpios[i], 0);
+			if (ret < 0 || !dm_gpio_is_valid(&plat->cs_gpios[i])) {
+				/* Use the native CS function for this line */
+				continue;
+			}
+
+			ret = dm_gpio_set_dir_flags(&plat->cs_gpios[i],
+						    GPIOD_IS_OUT | GPIOD_ACTIVE_LOW);
+			if (ret) {
+				dev_err(bus, "Setting cs %d error\n", i);
+				return ret;
+			}
+		}
+	}
+
 	return 0;
 }