On Tue, Aug 15, 2017 at 05:28:50PM +0100, Harvey Hunt wrote:
> The MT7628A is the successor to the MT7620 and pin compatible with the
> MT7688A, although the latter supports only a 1T1R antenna rather than
> a 2T2R antenna.
>
> This commit adds support for the following features:
>
> - UART
> - USB PHY
> - EHCI
> - Interrupt controller
> - System controller
> - Memory controller
> - Reset controller
>
> Signed-off-by: Harvey Hunt <harvey.hunt@xxxxxxxxxx>
> Cc: John Crispin <john@xxxxxxxxxxx>
> Cc: linux-mips@xxxxxxxxxxxxxx
> Cc: devicetree@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: linux-mediatek@xxxxxxxxxxxxxxxxxxx
> ---
> Documentation/devicetree/bindings/mips/ralink.txt | 1 +
> arch/mips/boot/dts/ralink/mt7628a.dtsi | 125 ++++++++++++++++++++++
> 2 files changed, 126 insertions(+)
> create mode 100644 arch/mips/boot/dts/ralink/mt7628a.dtsi
>
> diff --git a/Documentation/devicetree/bindings/mips/ralink.txt b/Documentation/devicetree/bindings/mips/ralink.txt
> index b35a8d0..a16e8d7 100644
> --- a/Documentation/devicetree/bindings/mips/ralink.txt
> +++ b/Documentation/devicetree/bindings/mips/ralink.txt
> @@ -15,3 +15,4 @@ value must be one of the following values:
> ralink,rt5350-soc
> ralink,mt7620a-soc
> ralink,mt7620n-soc
> + ralink,mt7628a-soc
> diff --git a/arch/mips/boot/dts/ralink/mt7628a.dtsi b/arch/mips/boot/dts/ralink/mt7628a.dtsi
> new file mode 100644
> index 0000000..8461fe9
> --- /dev/null
> +++ b/arch/mips/boot/dts/ralink/mt7628a.dtsi
> @@ -0,0 +1,125 @@
> +/ {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "ralink,mt7628a-soc";
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu@0 {
> + compatible = "mti,mips24KEc";
> + device_type = "cpu";
> + reg = <0>;
> + };
> + };
> +
> + resetctrl: resetctrl {
reset-controller {
> + compatible = "ralink,rt2880-reset";
> + #reset-cells = <1>;
> + };
> +
> + cpuintc: cpuintc {
interrupt-controller {
> + #address-cells = <0>;
> + #interrupt-cells = <1>;
> + interrupt-controller;
> + compatible = "mti,cpu-interrupt-controller";
> + };
> +
> + palmbus@10000000 {
> + compatible = "palmbus";
> + reg = <0x10000000 0x200000>;
> + ranges = <0x0 0x10000000 0x1FFFFF>;
> +
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + sysc@0 {
system-controller@0
> + compatible = "ralink,mt7620a-sysc";
> + reg = <0x0 0x100>;
> + };
> +
> + intc: intc@200 {
interrupt-controller@200
> + compatible = "ralink,rt2880-intc";
> + reg = <0x200 0x100>;
> +
> + interrupt-controller;
> + #interrupt-cells = <1>;
> +
> + resets = <&resetctrl 9>;
> + reset-names = "intc";
> +
> + interrupt-parent = <&cpuintc>;
> + interrupts = <2>;
> +
> + ralink,intc-registers = <0x9c 0xa0
> + 0x6c 0xa4
> + 0x80 0x78>;
> + };
> +
> + memc@300 {
memory-controller@300
> + compatible = "ralink,mt7620a-memc";
> + reg = <0x300 0x100>;
> + };
> +
> + uartlite@c00 {
serial@c00
And so on. IOW, use standard, generic node names as defined in the DT
spec.
> + compatible = "ns16550a";
> + reg = <0xc00 0x100>;
> +
> + resets = <&resetctrl 12>;
> + reset-names = "uart0";
> +
> + interrupt-parent = <&intc>;
> + interrupts = <20>;
> +
> + reg-shift = <2>;
> + };
> +
> + uart1@d00 {
> + compatible = "ns16550a";
> + reg = <0xd00 0x100>;
> +
> + resets = <&resetctrl 19>;
> + reset-names = "uart1";
> +
> + interrupt-parent = <&intc>;
> + interrupts = <21>;
> +
> + reg-shift = <2>;
> + };
> +
> + uart2@e00 {
> + compatible = "ns16550a";
> + reg = <0xe00 0x100>;
> +
> + resets = <&resetctrl 20>;
> + reset-names = "uart2";
> +
> + interrupt-parent = <&intc>;
> + interrupts = <22>;
> +
> + reg-shift = <2>;
> + };
> + };
> +
> + usbphy: uphy@10120000 {
> + compatible = "mediatek,mt7628-usbphy";
> + reg = <0x10120000 0x1000>;
> +
> + #phy-cells = <0>;
> +
> + resets = <&resetctrl 22 &resetctrl 25>;
> + reset-names = "host", "device";
> + };
> +
> + ehci@101c0000 {
> + compatible = "generic-ehci";
> + reg = <0x101c0000 0x1000>;
> +
> + phys = <&usbphy>;
> + phy-names = "usb";
> +
> + interrupt-parent = <&intc>;
> + interrupts = <18>;
> + };
> +};
> --
> 2.7.4
>
