Re: [PATCH 2/2] arm64: dts: add support for T7 based Amlogic AN400

Xianwei Zhao
2023-06-27T02:48:29Z

Hi Krzysztof,
Thank you for your review.

On 2023/6/26 23:41, Krzysztof Kozlowski wrote:
> [ EXTERNAL EMAIL ]
>
> On 26/06/2023 11:52, Xianwei Zhao wrote:
>> Amlogic T7 is an advanced application processor designed for smart display.
>>
>> Add basic support for the T7 based Amlogic AN400 board, which describes
>> the following components: CPU, GIC, IRQ, Timer, UART. It's capable of
>> booting up into the serial console.
> Few nits.
Is it possible to be more specific about it?
> ...
>
>> + core3 {
>> + cpu = <&cpu7>;
>> + };
>> + };
>> + };
>> +
>> + cpu0:cpu@0 {
> You miss spaces after labels.
Will do.
>
>> + device_type = "cpu";
>> + compatible = "arm,cortex-a73";
>> + reg = <0x0 0x0>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu1:cpu@1 {
>> + device_type = "cpu";
>> + compatible = "arm,cortex-a73";
>> + reg = <0x0 0x1>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu2:cpu@2 {
>> + device_type = "cpu";
>> + compatible = "arm,cortex-a73";
>> + reg = <0x0 0x2>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu3:cpu@3 {
>> + device_type = "cpu";
>> + compatible = "arm,cortex-a73";
>> + reg = <0x0 0x3>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu4:cpu@100 {
>> + device_type = "cpu";
>> + compatible = "arm,cortex-a53";
>> + reg = <0x0 0x100>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu5:cpu@101{
>> + device_type = "cpu";
>> + compatible = "arm,cortex-a53";
>> + reg = <0x0 0x101>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu6:cpu@102 {
>> + device_type = "cpu";
>> + compatible = "arm,cortex-a53";
>> + reg = <0x0 0x102>;
>> + enable-method = "psci";
>> + };
>> +
>> + cpu7:cpu@103 {
>> + device_type = "cpu";
>> + compatible = "arm,cortex-a53";
>> + reg = <0x0 0x103>;
>> + enable-method = "psci";
>> + };
>> + };
>> +
>> + timer {
>> + compatible = "arm,armv8-timer";
>> + interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
>> + <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
>> + <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
>> + <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
>> + };
>> +
>> + psci {
>> + compatible = "arm,psci-0.2";
>> + method = "smc";
>> + };
>> +
>> + xtal: xtal-clk {
>> + compatible = "fixed-clock";
>> + clock-frequency = <24000000>;
>> + clock-output-names = "xtal";
>> + #clock-cells = <0>;
>> + };
>> +
>> + soc {
>> + compatible = "simple-bus";
>> + #address-cells = <2>;
>> + #size-cells = <2>;
>> + ranges;
>> +
>> + gic: interrupt-controller@fff01000 {
>> + compatible = "arm,gic-400";
>> + #interrupt-cells = <3>;
>> + #address-cells = <0>;
>> + interrupt-controller;
>> + reg = <0x0 0xfff01000 0 0x1000>,
>> + <0x0 0xfff02000 0 0x0100>;
>> + interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_HIGH)>;
>> + };
> Fix indentation.
Will do.
>> +
>> + apb4: bus@fe000000 {
>> + compatible = "simple-bus";
>> + reg = <0x0 0xfe000000 0x0 0x480000>;
>> + #address-cells = <2>;
>> + #size-cells = <2>;
>> + ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x480000>;
>> +
>> + uart_a: serial@78000 {
>> + compatible = "amlogic,meson-s4-uart",
>> + "amlogic,meson-ao-uart";
>> + reg = <0x0 0x78000 0x0 0x18>;
>> + interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
>> + status = "disabled";
> Please, don't put status in the middle of properties...
Will put status in the end of properties in next version.
>
>
>
> Best regards,
> Krzysztof
>