linux-kernel - Re: [PATCH v3 1/6] rtc: zynqmp: declare dependency on arch

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Message-ID: <d63d7f6f-0ff3-4f2d-8326-96b29d7fe57c@vaisala.com>
Date: Thu, 22 Jan 2026 14:25:51 +0200
From: Tomas Melin <tomas.melin@...sala.com>
To: Michal Simek <michal.simek@....com>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: linux-rtc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v3 1/6] rtc: zynqmp: declare dependency on arch

Hi,

On 21/01/2026 14:16, Michal Simek wrote:
> 
> 
> On 1/19/26 10:51, Tomas Melin wrote:
>> Driver is compatible with RTC controller found on zynqmp.
>> Configure dependency to enable building only when zynqmp architecture
>> is enabled.
>>
>> Reported-by: kernel test robot <lkp@...el.com>
>> Signed-off-by: Tomas Melin <tomas.melin@...sala.com>
>> ---
>>   drivers/rtc/Kconfig | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
>> index 2933c41c77c88e60df721fe65b9c8afb995ae51e..46b497524cbfb5d0c1662dcaddbb6d28b4ae2abe 100644
>> --- a/drivers/rtc/Kconfig
>> +++ b/drivers/rtc/Kconfig
>> @@ -1376,7 +1376,7 @@ config RTC_DRV_OPTEE
>>   
>>   config RTC_DRV_ZYNQMP
>>   	tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
>> -	depends on OF && HAS_IOMEM
>> +	depends on OF && HAS_IOMEM && ARCH_ZYNQMP
> 
> 
>     arm-linux-gnueabi-ld: drivers/rtc/rtc-zynqmp.o: in function 
> `xlnx_rtc_read_offset':
>  >> rtc-zynqmp.c:(.text.xlnx_rtc_read_offset+0xd0): undefined reference to 
> `__aeabi_ldivmod'
> 
> You should use macros like div_u64() to fix it instead of have driver enabled 
> only for ZynqMP.
I can do it that way if you prefer such approach.

Thanks,
Tomas


> 
> M
>