linux-kernel - Re: [PATCH v2 1/3] clk: axi-clkgen: remove ARCH dependency in Kconfig

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Date:   Tue, 26 Jan 2021 18:38:53 -0800
From:   Moritz Fischer <mdf@...nel.org>
To:     Alexandru Ardelean <alexandru.ardelean@...log.com>
Cc:     linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, mturquette@...libre.com,
        sboyd@...nel.org, robh+dt@...nel.org, lars@...afoo.de,
        linux-fpga@...r.kernel.org, mdf@...nel.org,
        Dragos Bogdan <dragos.bogdan@...log.com>
Subject: Re: [PATCH v2 1/3] clk: axi-clkgen: remove ARCH dependency in Kconfig

Alexandru,

On Tue, Jan 26, 2021 at 01:08:24PM +0200, Alexandru Ardelean wrote:
> The intent is to be able to run this driver to access the IP core in setups
> where FPGA board is also connected via a PCIe bus. In such cases the number
> of combinations explodes, where the host system can be an x86 with Xilinx
> Zynq/ZynqMP/Microblaze board connected via PCIe.
> Or even a ZynqMP board with a ZynqMP/Zynq/Microblaze connected via PCIe.
> 
> To accommodate for these cases, this change removes the limitation for this
> driver to be compilable only on Zynq/Microblaze architectures.
> 
> Signed-off-by: Dragos Bogdan <dragos.bogdan@...log.com>
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
> ---
>  drivers/clk/Kconfig | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index 85856cff506c..d8c2d4593926 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -247,7 +247,6 @@ config CLK_TWL6040
>  
>  config COMMON_CLK_AXI_CLKGEN
>  	tristate "AXI clkgen driver"
> -	depends on ARCH_ZYNQ || MICROBLAZE || COMPILE_TEST
Umhhh ... no dependencies? How are you accessing your registers? You
seem to be using device tree, probably:

	depends on HAS_IOMEM || COMPILE_TEST
	depends on OF

at least? Please double check your dependencies.
>  	help
>  	  Support for the Analog Devices axi-clkgen pcore clock generator for Xilinx
>  	  FPGAs. It is commonly used in Analog Devices' reference designs.
> -- 
> 2.17.1
> 

- Moritz