[086/108] x86: Support Atom SoCs using SWSMISCI rather than the SWSCI

Message ID 20200126220508.86.I50851bb823bec6a8e470befd7d68f5a6ca7b7b4e@changeid
State New
Headers show
Series
  • RFC: dm: Add programatic generation of ACPI tables
Related show

Commit Message

Simon Glass Jan. 27, 2020, 5:06 a.m.
Some Atom SoCs use SWSMISCI for SMI control. Add a Kconfig to select this.
It is used on Apollo Lake.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/x86/Kconfig                | 6 ++++++
 arch/x86/cpu/apollolake/Kconfig | 1 +
 2 files changed, 7 insertions(+)

Patch

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 61b6b48b81..930efc66cf 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -984,4 +984,10 @@  config INTEL_GENERIC_WIFI
 	  network functionality. It is only here to generate the ACPI tables
 	  required by Linux.
 
+config INTEL_GMA_SWSMISCI
+	bool
+	help
+	  Select this option for Atom-based platforms which use the SWSMISCI
+	  register (0xe0) rather than the SWSCI register (0xe8).
+
 endmenu
diff --git a/arch/x86/cpu/apollolake/Kconfig b/arch/x86/cpu/apollolake/Kconfig
index 6c62da04f0..e8a9a75112 100644
--- a/arch/x86/cpu/apollolake/Kconfig
+++ b/arch/x86/cpu/apollolake/Kconfig
@@ -16,6 +16,7 @@  config INTEL_APOLLOLAKE
 	select PCIEX_LENGTH_256MB
 	select PCH_SUPPORT
 	select P2SB
+	select INTEL_GMA_SWSMISCI
 	select ACPI_GNVS_EXTERNAL
 	imply ENABLE_MRC_CACHE
 	imply AHCI_PCI