linux-kernel - [PATCH 07/11] ARM: mmp: select specific CPU implementation

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Date:   Fri, 21 Oct 2022 17:49:37 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     linux-arm-kernel@...ts.infradead.org,
        Russell King <linux@...linux.org.uk>,
        Linus Walleij <linus.walleij@...aro.org>,
        Lubomir Rintel <lkundrak@...sk>
Cc:     linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 07/11] ARM: mmp: select specific CPU implementation

From: Arnd Bergmann <arnd@...db.de>

The behavior of the MMP platform code depends on whether the
CPU_PXA168/CPU_PXA910/CPU_MMP2 symbols are enabled or not.

I believe the intention here was that these can be left disabled for
a pure DT-only build, but it's not clear if that actually works. At
the minimum, the cpu_is_pxa168() and cpu_is_pxa910() checks behave
differently, which causes changes in the power management code.

For the moment, make the behavior depend on whether CONFIG_ATAGS is set
or not, to make it easier to bisect the removal of the old code later.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm/mach-mmp/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/mach-mmp/Kconfig b/arch/arm/mach-mmp/Kconfig
index d71417d57961..da38106149c4 100644
--- a/arch/arm/mach-mmp/Kconfig
+++ b/arch/arm/mach-mmp/Kconfig
@@ -113,6 +113,8 @@ config MACH_MMP_DT
 	select PINCTRL_SINGLE
 	select ARCH_HAS_RESET_CONTROLLER
 	select CPU_MOHAWK
+	select CPU_PXA168 if ATAGS
+	select CPU_PXA910 if ATAGS
 	help
 	  Include support for Marvell MMP2 based platforms using
 	  the device tree. Needn't select any other machine while
@@ -125,6 +127,7 @@ config MACH_MMP2_DT
 	select PINCTRL_SINGLE
 	select ARCH_HAS_RESET_CONTROLLER
 	select CPU_PJ4
+	select CPU_MMP2 if ATAGS
 	select PM_GENERIC_DOMAINS if PM
 	select PM_GENERIC_DOMAINS_OF if PM && OF
 	help
-- 
2.29.2