[PATCH 01/13] ARM: remove sa1100 platform

[Arnd Bergmann]

On Tue, Sep 8, 2026, at 21:39, Karl Mehltretter wrote:
> On Tue, Sep 08, 2026 at 05:27:51PM +0100, Arnd Bergmann wrote:
>>  62 files changed, 19 insertions(+), 10501 deletions(-)
>
> Note that Sashiko skipped reviewing this patch, because it exceeded
> its current 10000 line limit.
>
>> diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
>> @@ -275,18 +275,10 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
>> -	if (IS_ENABLED(CONFIG_ARCH_SA1100) ||
>> -	    of_device_is_compatible(pdev->dev.of_node, "mrvl,sa1100-rtc")) {
>> -		info->rcnr = base + 0x04;
>> -		info->rtsr = base + 0x10;
>> -		info->rtar = base + 0x00;
>> -		info->rttr = base + 0x08;
>> -	} else {
>> -		info->rcnr = base + 0x0;
>> -		info->rtsr = base + 0x8;
>> -		info->rtar = base + 0x4;
>> -		info->rttr = base + 0xc;
>> -	}
>> +	info->rcnr = base + 0x0;
>> +	info->rtsr = base + 0x8;
>> +	info->rtar = base + 0x4;
>> +	info->rttr = base + 0xc;
>
> This drops the layout switch but keeps "mrvl,sa1100-rtc" in
> sa1100_rtc_dt_ids[] and in bindings/rtc/sa1100-rtc.yaml, so a DT with
> that compatible would now silently get the MMP register offsets instead
> of the SA1100 ones.

This one is interesting: this was already the behavior before
my patch, as CONFIG_ARCH_SA1100 is mutually exclusive with all
other targets. That obviously wasn't the intention of the code.

I've removed the sa1100_rtc_dt_ids[] entry now.

>> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
>> @@ -614,16 +614,16 @@ config S3C2410_WATCHDOG
>>  	  be called s3c2410_wdt.
>>  
>>  config SA1100_WATCHDOG
>> -	tristate "SA1100/PXA2xx watchdog"
>> -	depends on ARCH_SA1100 || ARCH_PXA || COMPILE_TEST
>> +	tristate "PXA2xx watchdog"
>> +	depends on ARCH_PXA || COMPILE_TEST
>>  	help
>> -	  Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
>> -	  reboot your system when timeout is reached.
>> +	  Watchdog timer embedded PXA2xx chips. This will reboot your
>> +	  system when timeout is reached.
>>  
>
> "embedded into PXA2xx chips" is better.
>
> The RTC_DRV_SA1100 help text a bit earlier in the patch also still says
> "built into your SA11x0 or PXA2xx CPU".

Fixed all these now, thanks for the review!

      Arnd