ACPI: add AMD ACPI2Platform device support for x86 system

This new feature is to interpret AMD specific ACPI device to
platform device such as I2C, UART, GPIO found on AMD CZ and
later chipsets. It based on example intel LPSS. Now, it can
support AMD I2C, UART and GPIO.

Signed-off-by: Ken Xue <Ken.Xue@amd.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0dc9d0144a27..3e15cee34aee 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -496,6 +496,17 @@ config X86_INTEL_LPSS
           things like clock tree (common clock framework) and pincontrol
           which are needed by the LPSS peripheral drivers.
 
+config X86_AMD_PLATFORM_DEVICE
+        bool "AMD ACPI2Platform devices support"
+        depends on ACPI
+        select COMMON_CLK
+        select PINCTRL
+        ---help---
+          Select to interpret AMD specific ACPI device to platform device
+          such as I2C, UART, GPIO found on AMD Carrizo and later chipsets.
+          I2C and UART depend on COMMON_CLK to set clock. GPIO driver is
+          implemented under PINCTRL subsystem.
+
 config IOSF_MBI
         tristate "Intel SoC IOSF Sideband support for SoC platforms"
         depends on PCI