[RFC PATCH 16/17] arm: sunxi: add Allwinner T113s devicetree stub

[Icenowy Zheng]

在 2022-12-06星期二的 00:45 +0000，Andre Przywara写道：
> This adds the basic SoC .dtsi devicetree stub for the Allwinner T113s
> SoC. This shares a die with the Allwinner D1 SoC (with RISC-V cores),
> but uses two Cortex-A7 cores instead of the T-HEAD C906 RISC-V core.
> 
> Include the existing D1 devicetree stub, but add the ARM specific
> nodes,
> like for the CPU, the arch timer and the GIC.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> ---
>  arch/arm/dts/sun8i-t113s.dtsi | 59
> +++++++++++++++++++++++++++++++++++
>  1 file changed, 59 insertions(+)
>  create mode 100644 arch/arm/dts/sun8i-t113s.dtsi
> 
> diff --git a/arch/arm/dts/sun8i-t113s.dtsi b/arch/arm/dts/sun8i-
> t113s.dtsi
> new file mode 100644
> index 00000000000..0919ce559f6
> --- /dev/null
> +++ b/arch/arm/dts/sun8i-t113s.dtsi
> @@ -0,0 +1,59 @@
> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> +// Copyright (C) 2022 Arm Ltd.
> +
> +#define SOC_PERIPHERAL_IRQ(nr) GIC_SPI nr
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <../../riscv/dts/sunxi-d1s-t113.dtsi>

Should we make a R528 DTSI which includes d1-t113.dtsi, and then T113
DTSI which includes d1s-t113.dtsi ?

> +#include <../../riscv/dts/sunxi-d1-t113.dtsi>
> +
> +/ {
> +       interrupt-parent = <&gic>;
> +
> +       cpus {
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               cpu0: cpu at 0 {
> +                       compatible = "arm,cortex-a7";
> +                       device_type = "cpu";
> +                       reg = <0>;
> +                       clocks = <&ccu CLK_CPUX>;
> +                       clock-names = "cpu";
> +               };
> +
> +               cpu1: cpu at 1 {
> +                       compatible = "arm,cortex-a7";
> +                       device_type = "cpu";
> +                       reg = <1>;
> +                       clocks = <&ccu CLK_CPUX>;
> +                       clock-names = "cpu";
> +               };
> +       };
> +
> +       gic: interrupt-controller at 1c81000 {
> +               compatible = "arm,gic-400";
> +               reg = <0x03021000 0x1000>,
> +                     <0x03022000 0x2000>,
> +                     <0x03024000 0x2000>,
> +                     <0x03026000 0x2000>;
> +               interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) |
> IRQ_TYPE_LEVEL_HIGH)>;
> +               interrupt-controller;
> +               #interrupt-cells = <3>;
> +       };
> +
> +       timer {
> +               compatible = "arm,armv7-timer";
> +               interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) |
> IRQ_TYPE_LEVEL_LOW)>,
> +                            <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) |
> IRQ_TYPE_LEVEL_LOW)>,
> +                            <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) |
> IRQ_TYPE_LEVEL_LOW)>,
> +                            <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) |
> IRQ_TYPE_LEVEL_LOW)>;
> +       };
> +
> +       pmu {
> +               compatible = "arm,cortex-a7-pmu";
> +               interrupts = <GIC_SPI 172 IRQ_TYPE_LEVEL_HIGH>,
> +                            <GIC_SPI 173 IRQ_TYPE_LEVEL_HIGH>;
> +               interrupt-affinity = <&cpu0>, <&cpu1>;
> +       };
> +};