[PATCH 4/5] ARM: BCM5301X: Add DT for Asus RT-N18U

[Hauke Mehrtens]

On 11/30/2014 06:28 PM, Rafał Miłecki wrote:
> Signed-off-by: Rafał Miłecki <zajec5 at gmail.com>
> ---
>  arch/arm/boot/dts/Makefile                  |  3 +-
>  arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts | 78 +++++++++++++++++++++++++++++
>  arch/arm/boot/dts/bcm47081.dtsi             | 26 ++++++++++
>  arch/arm/mach-bcm/bcm_5301x.c               |  1 +
>  4 files changed, 107 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts
>  create mode 100644 arch/arm/boot/dts/bcm47081.dtsi
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 18a21d9..db51a31 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -58,7 +58,8 @@ dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b-plus.dtb
>  dtb-$(CONFIG_ARCH_BCM_5301X) += \
>  	bcm4708-buffalo-wzr-1750dhp.dtb \
>  	bcm4708-netgear-r6250.dtb \
> -	bcm4708-netgear-r6300-v2.dtb
> +	bcm4708-netgear-r6300-v2.dtb \
> +	bcm47081-asus-rt-n18u.dtb
>  dtb-$(CONFIG_ARCH_BCM_63XX) += bcm963138dvt.dtb
>  dtb-$(CONFIG_ARCH_BCM_CYGNUS) += bcm911360_entphn.dtb \
>  	bcm911360k.dtb \
> diff --git a/arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts b/arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts
> new file mode 100644
> index 0000000..c40ad39
> --- /dev/null
> +++ b/arch/arm/boot/dts/bcm47081-asus-rt-n18u.dts
> @@ -0,0 +1,78 @@
> +/*
> + * Broadcom BCM470X / BCM5301X ARM platform code.
> + * DTS for Asus RT-N18U
> + *
> + * Copyright © 2014 Rafał Miłecki <zajec5 at gmail.com>
> + *
> + * Licensed under the GNU/GPL. See COPYING for details.
> + */
> +
> +/dts-v1/;
> +
> +#include "bcm47081.dtsi"
> +
> +/ {
> +	compatible = "asus,rt-n18u", "brcm,bcm47081";

Instead of adding bcm47081 to the core code you can do this:

compatible = "asus,rt-n18u", "brcm,bcm47081", "brcm,bcm4708";

If we later need some special handling for bcm47081 we can add this but
the old dts file will still work. This is more relevant if the dts file
is in the boot loader.

> +	model = "Asus RT-N18U (BCM47081)";
> +
> +	chosen {
> +		bootargs = "console=ttyS0,115200";
> +	};
> +
> +	memory {
> +		reg = <0x00000000 0x08000000>;
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		power {
> +			label = "bcm53xx:blue:power";
> +			gpios = <&chipcommon 0 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "default-on";
> +		};
> +
> +		usb2 {
> +			label = "bcm53xx:blue:usb2";
> +			gpios = <&chipcommon 3 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "default-off";
> +		};
> +
> +		wan {
> +			label = "bcm53xx:blue:wan";
> +			gpios = <&chipcommon 6 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "default-on";
> +		};
> +
> +		lan {
> +			label = "bcm53xx:blue:lan";
> +			gpios = <&chipcommon 9 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "default-on";
> +		};
> +
> +		usb3 {
> +			label = "bcm53xx:blue:usb3";
> +			gpios = <&chipcommon 14 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "default-off";
> +		};
> +	};
> +
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		poll-interval = <200>;
> +
> +		restart {
> +			label = "Reset";
> +			linux,code = <KEY_RESTART>;
> +			gpios = <&chipcommon 7 GPIO_ACTIVE_LOW>;
> +		};
> +
> +		wps {
> +			label = "WPS";
> +			linux,code = <KEY_WPS_BUTTON>;
> +			gpios = <&chipcommon 11 GPIO_ACTIVE_LOW>;
> +		};
> +	};
> +};
> diff --git a/arch/arm/boot/dts/bcm47081.dtsi b/arch/arm/boot/dts/bcm47081.dtsi
> new file mode 100644
> index 0000000..f720012
> --- /dev/null
> +++ b/arch/arm/boot/dts/bcm47081.dtsi

This is ok.

> @@ -0,0 +1,26 @@
> +/*
> + * Broadcom BCM470X / BCM5301X ARM platform code.
> + * DTS for BCM47081 SoC.
> + *
> + * Copyright © 2014 Rafał Miłecki <zajec5 at gmail.com>
> + *
> + * Licensed under the GNU/GPL. See COPYING for details.
> + */
> +
> +#include "bcm5301x.dtsi"
> +
> +/ {
> +	compatible = "brcm,bcm47081";
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		cpu at 0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a9";
> +			next-level-cache = <&L2>;
> +			reg = <0x0>;
> +		};
> +	};
> +};
> diff --git a/arch/arm/mach-bcm/bcm_5301x.c b/arch/arm/mach-bcm/bcm_5301x.c
> index e9bcbdb..eb487e1 100644
> --- a/arch/arm/mach-bcm/bcm_5301x.c
> +++ b/arch/arm/mach-bcm/bcm_5301x.c
> @@ -45,6 +45,7 @@ static void __init bcm5301x_init_early(void)
>  
>  static const char __initconst *bcm5301x_dt_compat[] = {
>  	"brcm,bcm4708",
> +	"brcm,bcm47081",
>  	NULL,
>  };
>  
>