linux/arch/arm/mach-vexpress/Kconfig

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menuconfig ARCH_VEXPRESS
ARM: use "depends on" for SoC configs instead of "if" after prompt Many ARM sub-architectures use prompts followed by "if" conditional, but it is wrong. Please notice the difference between config ARCH_FOO bool "Foo SoCs" if ARCH_MULTI_V7 and config ARCH_FOO bool "Foo SoCs" depends on ARCH_MULTI_V7 These two are *not* equivalent! In the former statement, it is not ARCH_FOO, but its prompt that depends on ARCH_MULTI_V7. So, it is completely valid that ARCH_FOO is selected by another, but ARCH_MULTI_V7 is still disabled. As it is not unmet dependency, Kconfig never warns. This is probably not what you want. The former should be used only when you need to do so, and you really understand what you are doing. (In most cases, it should be wrong!) For enabling/disabling sub-architectures, the latter is always correct. As a good side effect, this commit fixes some entries over 80 columns (mach-imx, mach-integrator, mach-mbevu). [Arnd: I note that there is not really a bug here, according to the discussion that followed, but I can see value in being consistent and in making the lines shorter] Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Jun Nie <jun.nie@linaro.org> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Acked-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Shawn Guo <shawnguo@kernel.org> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Krzysztof Halasa <khc@piap.pl> Acked-by: Maxime Coquelin <maxime.coquelin@st.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-11-16 11:06:10 +08:00
bool "ARM Ltd. Versatile Express family"
depends on ARCH_MULTI_V7
select ARCH_SUPPORTS_BIG_ENDIAN
select ARM_AMBA
select ARM_GIC
select ARM_GLOBAL_TIMER
select ARM_TIMER_SP804
select COMMON_CLK_VERSATILE
select GPIOLIB
select HAVE_ARM_SCU if SMP
select HAVE_ARM_TWD if SMP
select HAVE_PATA_PLATFORM
select ICST
select NO_IOPORT_MAP
select PLAT_VERSATILE
select POWER_RESET
select POWER_RESET_VEXPRESS
select POWER_SUPPLY
select REGULATOR if MMC_ARMMMCI
select REGULATOR_FIXED_VOLTAGE if REGULATOR
select VEXPRESS_CONFIG
select VEXPRESS_SYSCFG
select MFD_VEXPRESS_SYSREG
help
This option enables support for systems using Cortex processor based
ARM core and logic (FPGA) tiles on the Versatile Express motherboard,
for example:
- CoreTile Express A5x2 (V2P-CA5s)
- CoreTile Express A9x4 (V2P-CA9)
- CoreTile Express A15x2 (V2P-CA15)
- LogicTile Express 13MG (V2F-2XV6) with A5, A7, A9 or A15 SMMs
(Soft Macrocell Models)
- Versatile Express RTSMs (Models)
You must boot using a Flattened Device Tree in order to use these
platforms. The traditional (ATAGs) boot method is not usable on
these boards with this option.
if ARCH_VEXPRESS
config ARCH_VEXPRESS_CORTEX_A5_A9_ERRATA
bool "Enable A5 and A9 only errata work-arounds"
default y
select ARM_ERRATA_643719 if SMP
select ARM_ERRATA_720789
select PL310_ERRATA_753970 if CACHE_L2X0
help
Provides common dependencies for Versatile Express platforms
based on Cortex-A5 and Cortex-A9 processors. In order to
build a working kernel, you must also enable relevant core
tile support or Flattened Device Tree based support options.
config ARCH_VEXPRESS_DCSCB
bool "Dual Cluster System Control Block (DCSCB) support"
depends on MCPM
select ARM_CCI400_PORT_CTRL
help
Support for the Dual Cluster System Configuration Block (DCSCB).
This is needed to provide CPU and cluster power management
on RTSM implementing big.LITTLE.
config ARCH_VEXPRESS_SPC
bool "Versatile Express Serial Power Controller (SPC)"
select PM_OPP
help
The TC2 (A15x2 A7x3) versatile express core tile integrates a logic
block called Serial Power Controller (SPC) that provides the interface
between the dual cluster test-chip and the M3 microcontroller that
carries out power management.
config ARCH_VEXPRESS_TC2_PM
bool "Versatile Express TC2 power management"
depends on MCPM
select ARM_CCI400_PORT_CTRL
select ARCH_VEXPRESS_SPC
select ARM_CPU_SUSPEND
help
Support for CPU and cluster power management on Versatile Express
with a TC2 (A15x2 A7x3) big.LITTLE core tile.
endif