spi/tegra: add devicetree support
Allow the tegra spi driver to obtain populate the spi bus with devices
from the device tree.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/Documentation/devicetree/bindings/spi/spi_nvidia.txt b/Documentation/devicetree/bindings/spi/spi_nvidia.txt
new file mode 100644
index 0000000..6b9e518
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi_nvidia.txt
@@ -0,0 +1,5 @@
+NVIDIA Tegra 2 SPI device
+
+Required properties:
+- compatible : should be "nvidia,tegra20-spi".
+- gpios : should specify GPIOs used for chipselect.
diff --git a/drivers/spi/spi_tegra.c b/drivers/spi/spi_tegra.c
index 6c3aa6e..b0e3586 100644
--- a/drivers/spi/spi_tegra.c
+++ b/drivers/spi/spi_tegra.c
@@ -546,6 +546,7 @@
tspi->rx_dma_req.req_sel = spi_tegra_req_sels[pdev->id];
tspi->rx_dma_req.dev = tspi;
+ master->dev.of_node = pdev->dev.of_node;
ret = spi_register_master(master);
if (ret < 0)
@@ -595,10 +596,21 @@
MODULE_ALIAS("platform:spi_tegra");
+#ifdef CONFIG_OF
+static struct of_device_id spi_tegra_of_match_table[] __devinitdata = {
+ { .compatible = "nvidia,tegra20-spi", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, spi_tegra_of_match_table);
+#else /* CONFIG_OF */
+#define spi_tegra_of_match_table NULL
+#endif /* CONFIG_OF */
+
static struct platform_driver spi_tegra_driver = {
.driver = {
.name = "spi_tegra",
.owner = THIS_MODULE,
+ .of_match_table = spi_tegra_of_match_table,
},
.remove = __devexit_p(spi_tegra_remove),
};