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 <krzysztof.kozlowski@linaro.org>
Reviewed-by: Andi Shyti <andi@etezian.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220629102304.65712-5-chanho61.park@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index ff565e5..7f34686 100644 (file)
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -18,7 +18,7 @@
 
 #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
@@ -1451,6 +1451,19 @@ static const struct s3c64xx_spi_port_config exynos5433_spi_port_config = {
        .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,
@@ -1492,6 +1505,9 @@ static const struct of_device_id s3c64xx_spi_dt_match[] = {
        { .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,
        },