From: Eduardo Valentin eduardo.valentin@ti.com
Bandgap is a device used to measure temperature on electronic equipments. It is widely used in digital integrated circuits. It is based on the dependency between silicon voltage and temperature.
This patch introduce HAS_BANDGAP config entry. This config is a boolean value so that arch code can flag if they feature a bandgap device.
This config entry follows the same idea behind ARCH_HAS_CPUFREQ.
Cc: linux-arm-kernel@lists.infradead.org Cc: linux-omap@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Fabio Stevam festevam@gmail.com Acked-by: Tony Lindgren tony@atomide.com Acked-by: Amit Daniel Kachhap amit.daniel@samsung.com Signed-off-by: Eduardo Valentin eduardo.valentin@ti.com Signed-off-by: Russell King rmk+kernel@arm.linux.org.uk (cherry picked from commit 4a1b573346ee0d64d95beb78d49a5bbb574e6c6a)
Signed-off-by: Alex Shi alex.shi@linaro.org --- arch/arm/Kconfig | 3 +++ arch/arm/mach-omap2/Kconfig | 1 + 2 files changed, 4 insertions(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 1116be5..12570d0 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -174,6 +174,9 @@ config ARCH_HAS_CPUFREQ and that the relevant menu configurations are displayed for it.
+config ARCH_HAS_BANDGAP + bool + config GENERIC_HWEIGHT bool default y diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index f49cd51..8620ab5 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -4,6 +4,7 @@ config ARCH_OMAP config ARCH_OMAP2PLUS bool "TI OMAP2/3/4/5 SoCs with device tree support" if (ARCH_MULTI_V6 || ARCH_MULTI_V7) select ARCH_HAS_CPUFREQ + select ARCH_HAS_BANDGAP select ARCH_HAS_HOLES_MEMORYMODEL select ARCH_OMAP select ARCH_REQUIRE_GPIOLIB