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

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Message-ID: <a373e247-3936-4c16-993b-ca8fb732fb18@amd.com>
Date: Wed, 21 Jan 2026 13:16:03 +0100
From: Michal Simek <michal.simek@....com>
To: Tomas Melin <tomas.melin@...sala.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



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.

M