From: Jamie Iles <jamie@xxxxxxxxxxxxx>
Support the DesignWare 8250 by a new compatible string and registering
the DesignWare helpers. If the registration of the helpers fails, then
continue as a normal 8250 as we may still get some useful debug out.
Cc: Alan Cox <alan@xxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Jamie Iles <jamie@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
.../devicetree/bindings/tty/serial/of-serial.txt | 1 +
drivers/tty/serial/of_serial.c | 7 +++++++
2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/Documentation/devicetree/bindings/tty/serial/of-serial.txt b/Documentation/devicetree/bindings/tty/serial/of-serial.txt
index b8b27b0..b7ceaaa 100644
--- a/Documentation/devicetree/bindings/tty/serial/of-serial.txt
+++ b/Documentation/devicetree/bindings/tty/serial/of-serial.txt
@@ -3,6 +3,7 @@
Required properties:
- compatible : one of:
- "ns8250"
+ - "ns8250dw"
- "ns16450"
- "ns16550a"
- "ns16550"
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index e58cece..024926c 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -78,6 +78,12 @@ static int __devinit of_platform_serial_setup(struct platform_device *ofdev,
}
}
+ if (of_device_is_compatible(np, "ns8250dw")) {
+ ret = serial8250_use_designware_io(port);
+ if (ret)
+ dev_warn(&ofdev->dev, "unable to register DesignWare 8250 helpers, continuing as a normal 8250\n");
+ }
+
port->type = type;
port->uartclk = clk;
port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP
@@ -176,6 +182,7 @@ static int of_platform_serial_remove(struct platform_device *ofdev)
*/
static struct of_device_id __devinitdata of_platform_serial_table[] = {
{ .compatible = "ns8250", .data = (void *)PORT_8250, },
+ { .compatible = "ns8250dw", .data = (void *)PORT_8250, },
{ .compatible = "ns16450", .data = (void *)PORT_16450, },
{ .compatible = "ns16550a", .data = (void *)PORT_16550A, },
{ .compatible = "ns16550", .data = (void *)PORT_16550, },
--
1.7.7
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