linux-kernel - [PATCH v4 1/3] regulator: spacemit: MFD_SPACEMIT

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Message-Id: <20251225-p1-kconfig-fix-v4-1-44b6728117c1@linux.spacemit.com>
Date: Thu, 25 Dec 2025 15:46:31 +0800
From: Troy Mitchell <troy.mitchell@...ux.spacemit.com>
To: Lee Jones <lee@...nel.org>, Yixun Lan <dlan@...too.org>, 
 Alex Elder <elder@...cstar.com>, Andi Shyti <andi.shyti@...nel.org>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, 
 spacemit@...ts.linux.dev, linux-i2c@...r.kernel.org, 
 linux-rtc@...r.kernel.org, Troy Mitchell <troy.mitchell@...ux.spacemit.com>
Subject: [PATCH v4 1/3] regulator: spacemit: MFD_SPACEMIT_P1 as
 dependencies

REGULATOR_SPACEMIT_P1 is a subdevice of P1 and should depend on
MFD_SPACEMIT_P1 rather than selecting it directly. Using 'select'
does not always respect the parent's dependencies, so 'depends on'
is the safer and more correct choice.

Since MFD_SPACEMIT_P1 already depends on I2C_K1, the dependency
in REGULATOR_SPACEMIT_P1 is now redundant.

Additionally, the default value depends on MFD_SPACEMIT_P1 rather
than ARCH_SPACEMIT.

Acked-by: Mark Brown <broonie@...nel.org>
Acked-by: Alex Elder <elder@...cstar.com>
Signed-off-by: Troy Mitchell <troy.mitchell@...ux.spacemit.com>
---
Change log in v4:
- default m if MFD_SPACEMIT_P1 instead of default MFD_SPACEMIT_P1
Link to v3: https://lore.kernel.org/all/20251118-p1-kconfig-fix-v3-3-8839c5ac5db3@linux.spacemit.com/

Changelog in v3:
- modify commit message
- change default value from ARCH_SPACEMIT to MFD_SPACEMIT_P1
- Link to v2: https://lore.kernel.org/all/20251027-p1-kconfig-fix-v2-4-49688f30bae8@linux.spacemit.com/
---
 drivers/regulator/Kconfig | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index d2335276cce5ffbd500bbaf251d1761a9116aee9..b51888a9a78f399a6af3294fc19f60792576332c 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -1496,9 +1496,8 @@ config REGULATOR_SLG51000
 config REGULATOR_SPACEMIT_P1
 	tristate "SpacemiT P1 regulators"
 	depends on ARCH_SPACEMIT || COMPILE_TEST
-	depends on I2C
-	select MFD_SPACEMIT_P1
-	default ARCH_SPACEMIT
+	depends on MFD_SPACEMIT_P1
+	default m if MFD_SPACEMIT_P1
 	help
 	  Enable support for regulators implemented by the SpacemiT P1
 	  power controller.  The P1 implements 6 high-efficiency buck

-- 
2.52.0