Re: [PATCH 2/3] arm64: dts: freescale: Add i.MX8MN dtsi support

[Andrey Smirnov]

On Thu, May 30, 2019 at 2:45 AM <Anson.Huang@xxxxxxx> wrote:
>
> From: Anson Huang <Anson.Huang@xxxxxxx>
>
> The i.MX8M Nano Media Applications Processor is a new SoC of the i.MX8M
> family, it is a 14nm FinFET product of the growing mScale family targeting
> the consumer market. It is built in Samsung 14LPP to achieve both high
> performance and low power consumption and relies on a powerful fully
> coherent core complex based on a quad core ARM Cortex-A53 cluster,
> Cortex-M7 low-power coprocessor and graphics accelerator.
>
> This patch adds the basic dtsi support for i.MX8MN.
>
> Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
> ---
> This patch should be based on below patches for clock and pinctrl head files:
> https://patchwork.kernel.org/patch/10968059/
> https://patchwork.kernel.org/patch/10968267/
> ---
>  arch/arm64/boot/dts/freescale/imx8mn.dtsi | 701 ++++++++++++++++++++++++++++++
>  1 file changed, 701 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/freescale/imx8mn.dtsi
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> new file mode 100644
> index 0000000..c318ee6
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
> @@ -0,0 +1,701 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2019 NXP
> + */
> +
> +#include <dt-bindings/clock/imx8mn-clock.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +#include "imx8mn-pinfunc.h"
> +
> +/ {
> +       compatible = "fsl,imx8mn";
> +       interrupt-parent = <&gic>;
> +       #address-cells = <2>;
> +       #size-cells = <2>;
> +
> +       aliases {
> +               ethernet0 = &fec1;
> +               gpio0 = &gpio1;
> +               gpio1 = &gpio2;
> +               gpio2 = &gpio3;
> +               gpio3 = &gpio4;
> +               gpio4 = &gpio5;
> +               i2c0 = &i2c1;
> +               i2c1 = &i2c2;
> +               i2c2 = &i2c3;
> +               i2c3 = &i2c4;
> +               mmc0 = &usdhc1;
> +               mmc1 = &usdhc2;
> +               mmc2 = &usdhc3;
> +               serial0 = &uart1;
> +               serial1 = &uart2;
> +               serial2 = &uart3;
> +               serial3 = &uart4;
> +               spi0 = &ecspi1;
> +               spi1 = &ecspi2;
> +               spi2 = &ecspi3;
> +       };
> +
> +       cpus {
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               A53_0: cpu@0 {
> +                       device_type = "cpu";
> +                       compatible = "arm,cortex-a53";
> +                       reg = <0x0>;
> +                       clock-latency = <61036>;
> +                       clocks = <&clk IMX8MN_CLK_ARM>;
> +                       enable-method = "psci";
> +                       next-level-cache = <&A53_L2>;
> +               };
> +
> +               A53_1: cpu@1 {
> +                       device_type = "cpu";
> +                       compatible = "arm,cortex-a53";
> +                       reg = <0x1>;
> +                       clock-latency = <61036>;
> +                       clocks = <&clk IMX8MN_CLK_ARM>;
> +                       enable-method = "psci";
> +                       next-level-cache = <&A53_L2>;
> +               };
> +
> +               A53_2: cpu@2 {
> +                       device_type = "cpu";
> +                       compatible = "arm,cortex-a53";
> +                       reg = <0x2>;
> +                       clock-latency = <61036>;
> +                       clocks = <&clk IMX8MN_CLK_ARM>;
> +                       enable-method = "psci";
> +                       next-level-cache = <&A53_L2>;
> +               };
> +
> +               A53_3: cpu@3 {
> +                       device_type = "cpu";
> +                       compatible = "arm,cortex-a53";
> +                       reg = <0x3>;
> +                       clock-latency = <61036>;
> +                       clocks = <&clk IMX8MN_CLK_ARM>;
> +                       enable-method = "psci";
> +                       next-level-cache = <&A53_L2>;
> +               };
> +
> +               A53_L2: l2-cache0 {
> +                       compatible = "cache";
> +               };
> +       };
> +
> +       memory@40000000 {
> +               device_type = "memory";
> +               reg = <0x0 0x40000000 0 0x80000000>;
> +       };
> +
> +       osc_32k: clock-osc-32k {
> +               compatible = "fixed-clock";
> +               #clock-cells = <0>;
> +               clock-frequency = <32768>;
> +               clock-output-names = "osc_32k";
> +       };
> +
> +       osc_24m: clock-osc-24m {
> +               compatible = "fixed-clock";
> +               #clock-cells = <0>;
> +               clock-frequency = <24000000>;
> +               clock-output-names = "osc_24m";
> +       };
> +
> +       clk_ext1: clock-ext1 {
> +               compatible = "fixed-clock";
> +               #clock-cells = <0>;
> +               clock-frequency = <133000000>;
> +               clock-output-names = "clk_ext1";
> +       };
> +
> +       clk_ext2: clock-ext2 {
> +               compatible = "fixed-clock";
> +               #clock-cells = <0>;
> +               clock-frequency = <133000000>;
> +               clock-output-names = "clk_ext2";
> +       };
> +
> +       clk_ext3: clock-ext3 {
> +               compatible = "fixed-clock";
> +               #clock-cells = <0>;
> +               clock-frequency = <133000000>;
> +               clock-output-names = "clk_ext3";
> +       };
> +
> +       clk_ext4: clock-ext4 {
> +               compatible = "fixed-clock";
> +               #clock-cells = <0>;
> +               clock-frequency= <133000000>;
> +               clock-output-names = "clk_ext4";
> +       };
> +
> +       gic: interrupt-controller@38800000 {
> +               compatible = "arm,gic-v3";
> +               reg = <0x0 0x38800000 0 0x10000>,
> +                     <0x0 0x38880000 0 0xC0000>;
> +               #interrupt-cells = <3>;
> +               interrupt-controller;
> +               interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +       };

GIC should probably go into soc {} node. At least that's how we have
it in i.MX8MQ AFAICT.

Thanks,
Andrey Smirnov