[PATCH V3 1/3] arm64: add config for Broadcom BCM4908 SoCs

[Rafał Miłecki]

On 12.11.2020 08:34, Baruch Siach wrote:
> On Thu, Nov 12 2020, Rafał Miłecki wrote:
>> From: Rafał Miłecki <rafal at milecki.pl>
>>
>> Add ARCH_BCM4908 config that can be used for compiling DTS files.
>>
>> Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
>> ---
>>   arch/arm64/Kconfig.platforms | 8 ++++++++
>>   arch/arm64/configs/defconfig | 1 +
>>   2 files changed, 9 insertions(+)
>>
>> diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
>> index 6f2494dd6d60..d1c02a4a93c8 100644
>> --- a/arch/arm64/Kconfig.platforms
>> +++ b/arch/arm64/Kconfig.platforms
>> @@ -43,6 +43,14 @@ config ARCH_BCM2835
>>   	  This enables support for the Broadcom BCM2837 and BCM2711 SoC.
>>   	  These SoCs are used in the Raspberry Pi 3 and 4 devices.
>>   
>> +config ARCH_BCM4908
>> +	bool "Broadcom BCM4908 family"
>> +	select GPIOLIB
>> +	help
>> +	  This enables support for the Broadcom BCM4906, BCM4908 and
>> +	  BCM49408 SoCs. These SoCs use Cortex-B53 cores and can be
> 
> Is Cortex-B53 an official name? I see reference to Brahma-B53 in other
> places like Documentation/arm64/silicon-errata.rst.

That should be Brahma-B53. Good catch.

Initially I didn't know "Brahma" name and thought (Brahma-) B53 is just
minor variation of Cortex-B53. I even used:
compatible = "brcm,cortex-b53", "arm,cortex-a53";

It's clarified now but I forgot to update config help.