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

[Rafał Miłecki]

On 3 December 2014 at 00:19, Hauke Mehrtens <hauke at hauke-m.de> wrote:
> 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.

I don't get it. How should I detect there is no second CPU?