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| author | Sam Protsenko <semen.protsenko@linaro.org> | 2024-01-19 19:29:46 -0600 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-01-24 15:11:43 +0000 |
| commit | 0229278bf33ea69cc1bba12c287f173e9b18c1f8 (patch) | |
| tree | 08c14984ef4de4cfe1c6bb427816ac620d01246d /drivers/spi/spi-s3c64xx.c | |
| parent | 18ab9e9e8889ecba23a5e8b7f8924f09284e33d8 (diff) | |
| download | lwn-0229278bf33ea69cc1bba12c287f173e9b18c1f8.tar.gz lwn-0229278bf33ea69cc1bba12c287f173e9b18c1f8.zip | |
spi: s3c64xx: Add Exynos850 support
Add SPI port configuration for Exynos850 SoC. It has 3 USI blocks which
can be configured in SPI mode:
* spi_0: BLK_PERI_SPI_0 (0x13940000)
* spi_1: BLK_ALIVE_USI_CMGP00 (0x11d00000)
* spi_2: BLK_ALIVE_USI_CMGP01 (0x11d20000)
SPI FIFO depth is 64 bytes for all those SPI blocks, so the
.fifo_lvl_mask value is set to 0x7f. All blocks have DIV_4 as the
default internal clock divider, and an internal loopback mode to run
a loopback test.
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://msgid.link/r/20240120012948.8836-6-semen.protsenko@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-s3c64xx.c')
| -rw-r--r-- | drivers/spi/spi-s3c64xx.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 432ec60d3568..7f7eb8f742e4 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1460,6 +1460,17 @@ static const struct s3c64xx_spi_port_config exynos5433_spi_port_config = { .quirks = S3C64XX_SPI_QUIRK_CS_AUTO, }; +static const struct s3c64xx_spi_port_config exynos850_spi_port_config = { + .fifo_lvl_mask = { 0x7f, 0x7f, 0x7f }, + .rx_lvl_offset = 15, + .tx_st_done = 25, + .clk_div = 4, + .high_speed = true, + .clk_from_cmu = true, + .has_loopback = true, + .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}, @@ -1514,6 +1525,9 @@ static const struct of_device_id s3c64xx_spi_dt_match[] = { { .compatible = "samsung,exynos5433-spi", .data = (void *)&exynos5433_spi_port_config, }, + { .compatible = "samsung,exynos850-spi", + .data = (void *)&exynos850_spi_port_config, + }, { .compatible = "samsung,exynosautov9-spi", .data = (void *)&exynosautov9_spi_port_config, }, |