2020-09-14 12:44:58

by Necip Fazil Yildiran

[permalink] [raw]
Subject: [PATCH] ARM: davinci: fix kconfig dependency warning when !PINCTRL

When ARCH_DAVINCI is enabled and PINCTRL is disabled, it results
in the following Kbuild warning:

WARNING: unmet direct dependencies detected for PINCTRL_SINGLE
Depends on [n]: PINCTRL [=n] && OF [=y] && HAS_IOMEM [=y]
Selected by [y]:
- ARCH_DAVINCI [=y] && ARCH_MULTI_V5 [=y]

The reason is that ARCH_DAVINCI selects PINCTRL_SINGLE without depending on
or selecting PINCTRL while PINCTRL_SINGLE is subordinate to PINCTRL.

Honor the kconfig menu hierarchy to remove kconfig dependency warnings.

Fixes: f962396ce292 ("ARM: davinci: support multiplatform build for ARM v5")
Signed-off-by: Necip Fazil Yildiran <[email protected]>
---
arch/arm/mach-davinci/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig
index f56ff8c24043..e0cbcda6f087 100644
--- a/arch/arm/mach-davinci/Kconfig
+++ b/arch/arm/mach-davinci/Kconfig
@@ -11,6 +11,7 @@ menuconfig ARCH_DAVINCI
select REGMAP_MMIO
select RESET_CONTROLLER
select HAVE_IDE
+ select PINCTRL
select PINCTRL_SINGLE

if ARCH_DAVINCI
--
2.25.1


2020-09-24 15:24:24

by Sekhar Nori

[permalink] [raw]
Subject: Re: [PATCH] ARM: davinci: fix kconfig dependency warning when !PINCTRL

Hi Necip,

On 14/09/20 6:08 PM, Necip Fazil Yildiran wrote:
> When ARCH_DAVINCI is enabled and PINCTRL is disabled, it results
> in the following Kbuild warning:
>
> WARNING: unmet direct dependencies detected for PINCTRL_SINGLE
> Depends on [n]: PINCTRL [=n] && OF [=y] && HAS_IOMEM [=y]
> Selected by [y]:
> - ARCH_DAVINCI [=y] && ARCH_MULTI_V5 [=y]
>
> The reason is that ARCH_DAVINCI selects PINCTRL_SINGLE without depending on
> or selecting PINCTRL while PINCTRL_SINGLE is subordinate to PINCTRL.
>
> Honor the kconfig menu hierarchy to remove kconfig dependency warnings.
>
> Fixes: f962396ce292 ("ARM: davinci: support multiplatform build for ARM v5")
> Signed-off-by: Necip Fazil Yildiran <[email protected]>

I think its better to fix this by changing the "select PINCTRL_SINGLE"
to "imply PINCTRL_SINGLE". It should be valid to build a DaVinci kernel
without pinctrl support if bootloader is taking care of the pin muxing.

I would not recommend it, but its not illegal either.

While at it, I would drop the other "select PINCTRL" line under "config
MACH_DA8XX_DT". It should not be needed since ARCH_DAVINCI will imply
PINCTRL_SINGLE

Thanks,
Sekhar