On Wed, Mar 26, 2014 at 7:19 AM, Vinayak Kale <vkale@xxxxxxx> wrote:
> APM X-Gene Storm SoC supports 4 serial ports. This patch adds device nodes
> for serial ports 1 to 3 (a device node for serial port 0 is already present
> in the dts file).
> This patch also sets the compatible property of serial nodes to "ns16550a".
>
> Signed-off-by: Vinayak Kale <vkale@xxxxxxx>
> ---
> arch/arm64/boot/dts/apm-mustang.dts | 4 ++++
> arch/arm64/boot/dts/apm-storm.dtsi | 36 +++++++++++++++++++++++++++++++++++-
> 2 files changed, 39 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/apm-mustang.dts b/arch/arm64/boot/dts/apm-mustang.dts
> index 1247ca1..6541962 100644
> --- a/arch/arm64/boot/dts/apm-mustang.dts
> +++ b/arch/arm64/boot/dts/apm-mustang.dts
> @@ -24,3 +24,7 @@
> reg = < 0x1 0x00000000 0x0 0x80000000 >; /* Updated by bootloader */
> };
> };
> +
> +&serial0 {
> + status = "ok";
> +};
> diff --git a/arch/arm64/boot/dts/apm-storm.dtsi b/arch/arm64/boot/dts/apm-storm.dtsi
> index d37d736..2277b5c 100644
> --- a/arch/arm64/boot/dts/apm-storm.dtsi
> +++ b/arch/arm64/boot/dts/apm-storm.dtsi
> @@ -179,13 +179,47 @@
> };
>
> serial0: serial@1c020000 {
> + status = "disabled";
> device_type = "serial";
> - compatible = "ns16550";
> + compatible = "ns16550a";
Generally, changing a compatible string like this is a no-no. You
could be breaking compatibility with different OS versions. However,
this is one generic string to another and they have been around
forever, so I think it is okay. You probably should have a specific
string in case you ever have some quirk in your particular h/w.
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Rob
> reg = <0 0x1c020000 0x0 0x1000>;
> reg-shift = <2>;
> clock-frequency = <10000000>; /* Updated by bootloader */
> interrupt-parent = <&gic>;
> interrupts = <0x0 0x4c 0x4>;
> };
> +
> + serial1: serial@1c021000 {
> + status = "disabled";
> + device_type = "serial";
> + compatible = "ns16550a";
> + reg = <0 0x1c021000 0x0 0x1000>;
> + reg-shift = <2>;
> + clock-frequency = <10000000>; /* Updated by bootloader */
> + interrupt-parent = <&gic>;
> + interrupts = <0x0 0x4d 0x4>;
> + };
> +
> + serial2: serial@1c022000 {
> + status = "disabled";
> + device_type = "serial";
> + compatible = "ns16550a";
> + reg = <0 0x1c022000 0x0 0x1000>;
> + reg-shift = <2>;
> + clock-frequency = <10000000>; /* Updated by bootloader */
> + interrupt-parent = <&gic>;
> + interrupts = <0x0 0x4e 0x4>;
> + };
> +
> + serial3: serial@1c023000 {
> + status = "disabled";
> + device_type = "serial";
> + compatible = "ns16550a";
> + reg = <0 0x1c023000 0x0 0x1000>;
> + reg-shift = <2>;
> + clock-frequency = <10000000>; /* Updated by bootloader */
> + interrupt-parent = <&gic>;
> + interrupts = <0x0 0x4f 0x4>;
> + };
> };
> };
> --
> 1.8.2.1
>
> --
> To unsubscribe from this list: send the line "unsubscribe devicetree" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
