On 31/05/17 12:39, YT Shen wrote:
> This adds basic chip support for Mediatek 2712
>
> Signed-off-by: YT Shen <yt.shen@xxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/mediatek/Makefile | 1 +
> arch/arm64/boot/dts/mediatek/mt2712-evb.dts | 39 +++++++
> arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 166 ++++++++++++++++++++++++++++
> 3 files changed, 206 insertions(+)
> create mode 100644 arch/arm64/boot/dts/mediatek/mt2712-evb.dts
> create mode 100644 arch/arm64/boot/dts/mediatek/mt2712e.dtsi
>
> diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> index 9fbfd32..fcc0604 100644
> --- a/arch/arm64/boot/dts/mediatek/Makefile
> +++ b/arch/arm64/boot/dts/mediatek/Makefile
> @@ -1,3 +1,4 @@
> +dtb-$(CONFIG_ARCH_MEDIATEK) += mt2712-evb.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt6755-evb.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt6795-evb.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-evb.dtb
> diff --git a/arch/arm64/boot/dts/mediatek/mt2712-evb.dts b/arch/arm64/boot/dts/mediatek/mt2712-evb.dts
> new file mode 100644
> index 0000000..e526c0f
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt2712-evb.dts
> @@ -0,0 +1,39 @@
> +/*
> + * Copyright (c) 2017 MediaTek Inc.
> + * Author: YT Shen <yt.shen@xxxxxxxxxxxx>
> + *
> + * SPDX-License-Identifier: (GPL-2.0 OR MIT)
> + */
> +
> +/dts-v1/;
> +#include "mt2712e.dtsi"
> +
> +/ {
> + model = "MediaTek MT2712 evaluation board";
> + compatible = "mediatek,mt2712-evb", "mediatek,mt2712";
> +
> + aliases {
> + serial0 = &uart0;
> + serial1 = &uart1;
> + serial2 = &uart2;
> + serial3 = &uart3;
> + serial4 = &uart4;
> + serial5 = &uart5;
> + };
> +
> + memory@40000000 {
> + device_type = "memory";
> + reg = <0 0x40000000 0 0x80000000>;
> + };
> +
> + chosen {
> + stdout-path = "serial0:921600n8";
> + linux,initrd-start = <0x45000000>;
> + linux,initrd-end = <0x4a000000>;
> + };
> +};
> +
> +&uart0 {
> + status = "okay";
> +};
> +
> diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
> new file mode 100644
> index 0000000..6df0da9
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
> @@ -0,0 +1,166 @@
> +/*
> + * Copyright (c) 2017 MediaTek Inc.
> + * Author: YT Shen <yt.shen@xxxxxxxxxxxx>
> + *
> + * SPDX-License-Identifier: (GPL-2.0 OR MIT)
> + */
> +
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +/ {
> + compatible = "mediatek,mt2712";
> + interrupt-parent = <&sysirq>;
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu-map {
> + cluster0 {
> + core0 {
> + cpu = <&cpu0>;
> + };
> + core1 {
> + cpu = <&cpu1>;
> + };
> + };
> +
> + cluster1 {
> + core0 {
> + cpu = <&cpu2>;
> + };
> + };
> + };
> +
> + cpu0: cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a35";
> + reg = <0x000>;
> + };
> +
> + cpu1: cpu@1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a35";
> + reg = <0x001>;
> + enable-method = "psci";
> + };
> +
> + cpu2: cpu@200 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a72";
> + reg = <0x200>;
> + enable-method = "psci";
> + };
> + };
> +
> + psci {
> + compatible = "arm,psci-0.2";
> + method = "smc";
> + };
> +
> + uart_clk: dummy26m {
> + compatible = "fixed-clock";
> + clock-frequency = <26000000>;
> + #clock-cells = <0>;
> + };
> +
> + timer {
> + compatible = "arm,armv8-timer";
> + interrupt-parent = <&gic>;
> + interrupts = <GIC_PPI 13
> + (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
Why 6? I only count 3 cores...
> + <GIC_PPI 14
> + (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
> + <GIC_PPI 11
> + (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>,
> + <GIC_PPI 10
> + (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_LOW)>;
> + };
> +
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + compatible = "simple-bus";
> + ranges;
> +
> + uart5: serial@1000f000 {
> + compatible = "mediatek,mt2712-uart",
> + "mediatek,mt6577-uart";
> + reg = <0 0x1000f000 0 0x400>;
> + interrupts = <GIC_SPI 127 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&uart_clk>;
> + status = "disabled";
> + };
> +
> + sysirq: interrupt-controller@10220a80 {
> + compatible = "mediatek,mt2712-sysirq",
> + "mediatek,mt6577-sysirq";
> + interrupt-controller;
> + #interrupt-cells = <3>;
> + interrupt-parent = <&gic>;
> + reg = <0 0x10220a80 0 0x40>;
> + };
> +
> + gic: interrupt-controller@10510000 {
> + compatible = "arm,gic-400";
> + #interrupt-cells = <3>;
> + interrupt-parent = <&gic>;
> + interrupt-controller;
> + reg = <0 0x10510000 0 0x1000>,
> + <0 0x10520000 0 0x1000>,
If that's truly a GIC400, then the above is wrong (the CPU interface is
spread over 8kB).
I also suspect that the first 4kB are aliased over
0x10520000:0x1052f000, and the second over 0x10530000:0x1053f000 (in the
true SBSA tradition). If that's the case, then the size is actually 128kB.
> + <0 0x10540000 0 0x2000>,
> + <0 0x10560000 0 0x2000>;
Please check GICV as well, which probably behaves the same way.
> + interrupts = <GIC_PPI 9
> + (GIC_CPU_MASK_SIMPLE(6) | IRQ_TYPE_LEVEL_HIGH)>;
Same thing here with 6 CPUs.
> + };
> +
> + uart0: serial@11002000 {
> + compatible = "mediatek,mt2712-uart",
> + "mediatek,mt6577-uart";
> + reg = <0 0x11002000 0 0x400>;
> + interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&uart_clk>;
> + status = "disabled";
> + };
> +
> + uart1: serial@11003000 {
> + compatible = "mediatek,mt2712-uart",
> + "mediatek,mt6577-uart";
> + reg = <0 0x11003000 0 0x400>;
> + interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&uart_clk>;
> + status = "disabled";
> + };
> +
> + uart2: serial@11004000 {
> + compatible = "mediatek,mt2712-uart",
> + "mediatek,mt6577-uart";
> + reg = <0 0x11004000 0 0x400>;
> + interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&uart_clk>;
> + status = "disabled";
> + };
> +
> + uart3: serial@11005000 {
> + compatible = "mediatek,mt2712-uart",
> + "mediatek,mt6577-uart";
> + reg = <0 0x11005000 0 0x400>;
> + interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&uart_clk>;
> + status = "disabled";
> + };
> +
> + uart4: serial@11019000 {
> + compatible = "mediatek,mt2712-uart",
> + "mediatek,mt6577-uart";
> + reg = <0 0x11019000 0 0x400>;
> + interrupts = <GIC_SPI 126 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&uart_clk>;
> + status = "disabled";
> + };
> + };
> +};
> +
>
No PMU wired on this system?
Thanks,
M.
--
Jazz is not dead. It just smells funny...
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