serial: 8250: Add OF support for Xscale variant

This adds support for device tree probing for the Intel
Xscale 8250 variant needed to support device tree on
the Intel IXP4xx platforms.

Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/serial/8250.txt b/Documentation/devicetree/bindings/serial/8250.txt
index da50321..3cba12f 100644 (file)
--- a/Documentation/devicetree/bindings/serial/8250.txt
+++ b/Documentation/devicetree/bindings/serial/8250.txt
@@ -21,6 +21,7 @@ Required properties:
        - "altr,16550-FIFO128"
        - "fsl,16550-FIFO64"
        - "fsl,ns16550"
+       - "intel,xscale-uart"
        - "ti,da830-uart"
        - "aspeed,ast2400-vuart"
        - "aspeed,ast2500-vuart"

diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index a1a8580..17da8af 100644 (file)
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -327,6 +327,7 @@ static const struct of_device_id of_platform_serial_table[] = {
        { .compatible = "nvidia,tegra20-uart", .data = (void *)PORT_TEGRA, },
        { .compatible = "nxp,lpc3220-uart", .data = (void *)PORT_LPC3220, },
        { .compatible = "ralink,rt2880-uart", .data = (void *)PORT_RT2880, },
+       { .compatible = "intel,xscale-uart", .data = (void *)PORT_XSCALE, },
        { .compatible = "altr,16550-FIFO32",
                .data = (void *)PORT_ALTR_16550_F32, },
        { .compatible = "altr,16550-FIFO64",