spi: dw: Add compatible string for Renesas RZ/N1 SPI Controller

The Renesas RZ/N1 SPI Controller is based on the Synopsys DW SSI, but has
additional registers for software CS control and DMA. This patch does not
address the changes required for DMA support, it simply adds the compatible
string. The CS registers are not needed as Linux can use gpios for the CS
signals.

Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com>
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Link: https://lore.kernel.org/r/1568793876-9009-5-git-send-email-gareth.williams.jx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index bd46fca3f0944aa81d1958f6f0015d9262d3b3a5..b5ce8bd58d9e1364a9aa414f4779d06a0f0ba9b3 100644 (file)
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -223,6 +223,7 @@ static const struct of_device_id dw_spi_mmio_of_match[] = {
        { .compatible = "mscc,ocelot-spi", .data = dw_spi_mscc_ocelot_init},
        { .compatible = "mscc,jaguar2-spi", .data = dw_spi_mscc_jaguar2_init},
        { .compatible = "amazon,alpine-dw-apb-ssi", .data = dw_spi_alpine_init},
+       { .compatible = "renesas,rzn1-spi", },
        { /* end of table */}
 };
 MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match);