diff options
Diffstat (limited to 'src/soc/intel/common/acpi/pch_clk.asl')
| -rw-r--r-- | src/soc/intel/common/acpi/pch_clk.asl | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/soc/intel/common/acpi/pch_clk.asl b/src/soc/intel/common/acpi/pch_clk.asl new file mode 100644 index 0000000000..08863a3234 --- /dev/null +++ b/src/soc/intel/common/acpi/pch_clk.asl @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#define PCR_BIOS_BUFFEN 0x8080 + +Scope (\_SB) +{ + /* MTL PCH CLK */ + Device (ICLK) { + Name (_HID, EISAID ("PNP0C02")) + Name (_UID, "SOCCLK") + + Method (_STA) + { + /* + * Device is present, enabled and decoding its resources + * and should not be shown in UI + */ + Return (0x3) + } + + /* + * PCIe(100MHz) clock disable + * Arg0 - clock index + */ + Method (CLKD, 1) { + \_SB.PCI0.PCRA (PID_ISCLK, PCR_BIOS_BUFFEN, Not (ShiftLeft (1, Arg0))) + } + + /* + * PCIe(100MHz) clock enable + * Arg0 - clock index + */ + Method (CLKE, 1) { + \_SB.PCI0.PCRO (PID_ISCLK, PCR_BIOS_BUFFEN, (ShiftLeft (1, Arg0))) + } + } +} |