serial: atmel_usart: Add device tree support

Add device tree support.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/serial/atmel_usart.c b/drivers/serial/atmel_usart.c
index 4fe992b..e450135 100644 (file)
--- a/drivers/serial/atmel_usart.c
+++ b/drivers/serial/atmel_usart.c
@@ -191,16 +191,35 @@ static int atmel_serial_probe(struct udevice *dev)
 {
        struct atmel_serial_platdata *plat = dev->platdata;
        struct atmel_serial_priv *priv = dev_get_priv(dev);
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+       fdt_addr_t addr_base;
 
+       addr_base = dev_get_addr(dev);
+       if (addr_base == FDT_ADDR_T_NONE)
+               return -ENODEV;
+
+       plat->base_addr = (uint32_t)addr_base;
+#endif
        priv->usart = (atmel_usart3_t *)plat->base_addr;
        atmel_serial_init_internal(priv->usart);
 
        return 0;
 }
 
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+static const struct udevice_id atmel_serial_ids[] = {
+       { .compatible = "atmel,at91sam9260-usart" },
+       { }
+};
+#endif
+
 U_BOOT_DRIVER(serial_atmel) = {
        .name   = "serial_atmel",
        .id     = UCLASS_SERIAL,
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+       .of_match = atmel_serial_ids,
+       .platdata_auto_alloc_size = sizeof(struct atmel_serial_platdata),
+#endif
        .probe = atmel_serial_probe,
        .ops    = &atmel_serial_ops,
        .flags = DM_FLAG_PRE_RELOC,