spi: s3c64xx: add spi port configuration for Exynos Auto v9 SoC

Add exynosautov9 spi port configuration. It supports up to 12 spis so
MAX_SPI_PORTS should be increased from 6 to 12.
It has DIV_4 as the default internal clock divider and an internal
loopback mode to run a loopback test.

Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Andi Shyti <[e-mail]>
Signed-off-by: Chanho Park <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-s3c64xx.c

···
 
 #include <linux/platform_data/spi-s3c64xx.h>
 
-#define MAX_SPI_PORTS		6
+#define MAX_SPI_PORTS		12
 #define S3C64XX_SPI_QUIRK_POLL		(1 << 0)
 #define S3C64XX_SPI_QUIRK_CS_AUTO	(1 << 1)
 #define AUTOSUSPEND_TIMEOUT	2000
···
 	.quirks		= S3C64XX_SPI_QUIRK_CS_AUTO,
 };
 
+static const struct s3c64xx_spi_port_config exynosautov9_spi_port_config = {
+	.fifo_lvl_mask	= { 0x1ff, 0x1ff, 0x7f, 0x7f, 0x7f, 0x7f, 0x1ff, 0x7f,
+			    0x7f, 0x7f, 0x7f, 0x7f},
+	.rx_lvl_offset	= 15,
+	.tx_st_done	= 25,
+	.clk_div	= 4,
+	.high_speed	= true,
+	.clk_from_cmu	= true,
+	.clk_ioclk	= true,
+	.has_loopback	= true,
+	.quirks		= S3C64XX_SPI_QUIRK_CS_AUTO,
+};
+
 static const struct s3c64xx_spi_port_config fsd_spi_port_config = {
 	.fifo_lvl_mask	= { 0x7f, 0x7f, 0x7f, 0x7f, 0x7f},
 	.rx_lvl_offset	= 15,
···
 	},
 	{ .compatible = "samsung,exynos5433-spi",
 			.data = (void *)&exynos5433_spi_port_config,
+	},
+	{ .compatible = "samsung,exynosautov9-spi",
+			.data = (void *)&exynosautov9_spi_port_config,
 	},
 	{ .compatible = "tesla,fsd-spi",
 			.data = (void *)&fsd_spi_port_config,