From 2ee98234b88174f2bcafefb7918e2794a1fdbc98 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 16 Feb 2016 15:29:10 +0100 Subject: [PATCH] arm64: renesas: Enable PM and PM_GENERIC_DOMAINS for SoCs with PM Domains All supported Renesas ARM64 SoCs have clock and power domains. To ensure proper operation of on-SoC modules, module clocks must be ungated, and power domains must be powered up when needed. Currently the user can choose to build a kernel with power management enabled or disabled: - If CONFIG_PM=y, power domains and/or module clocks are handled dynamically by Runtime PM and the generic power domain. - If CONFIG_PM=n, power domains are assumed to be powered up by reset state or by the boot loader, and module clocks are handled by the legacy clock domain on driver (un)bind. The latter is implemented using a platform bus notifier, which applies not only to all on-SoC devices, but to all platform devices present in the system. To remove the dependency on implicit assumptions, and to get rid of the peculiarities of the legacy clock domain, enable CONFIG_PM and CONFIG_PM_GENERIC_DOMAINS unconditionally. Signed-off-by: Geert Uytterhoeven Signed-off-by: Simon Horman --- arch/arm64/Kconfig.platforms | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms index 757220cb1b7f..e011ac0e17a3 100644 --- a/arch/arm64/Kconfig.platforms +++ b/arch/arm64/Kconfig.platforms @@ -76,7 +76,8 @@ config ARCH_RENESAS bool "Renesas SoC Platforms" select ARCH_SHMOBILE select PINCTRL - select PM_GENERIC_DOMAINS if PM + select PM + select PM_GENERIC_DOMAINS select RENESAS_IRQC help This enables support for the ARMv8 based Renesas SoCs.