From 45037f786c1732e318d1c56e62e5f6b3fe947971 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Kope=C4=87?= Date: Tue, 22 Feb 2022 12:28:33 +0100 Subject: soc/intel/tigerlake: Hide PMC and IOM devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Windows complains on missing drivers for these ACPI devices. Hide them from OS as it doesn't influence the hardware operation. Linux can still probe the drivers correctly. TEST=Boot Windows 11 and see there are no devices with missing drivers. Boot Ubuntu 20.04 and check that drivers corresponding to ACPI HIDs are still probed. Signed-off-by: Michał Kopeć Change-Id: I6c30c08ab730749bddef7ea67c7470c1554bd572 Reviewed-on: https://review.coreboot.org/c/coreboot/+/62492 Tested-by: build bot (Jenkins) Reviewed-by: Tim Wawrzynczak --- src/soc/intel/tigerlake/acpi/tcss.asl | 2 ++ src/soc/intel/tigerlake/pmc.c | 2 ++ 2 files changed, 4 insertions(+) (limited to 'src/soc/intel') diff --git a/src/soc/intel/tigerlake/acpi/tcss.asl b/src/soc/intel/tigerlake/acpi/tcss.asl index 1d58bfb520..50307f4db7 100644 --- a/src/soc/intel/tigerlake/acpi/tcss.asl +++ b/src/soc/intel/tigerlake/acpi/tcss.asl @@ -336,6 +336,8 @@ Scope (\_SB.PCI0) Name (_CRS, ResourceTemplate () { Memory32Fixed (ReadWrite, IOM_BASE_ADDRESS, IOM_BASE_SIZE) }) + /* Hide the device so that Windows does not complain on missing driver */ + Name (_STA, 0xB) } /* diff --git a/src/soc/intel/tigerlake/pmc.c b/src/soc/intel/tigerlake/pmc.c index 937943a029..b8eb3078c4 100644 --- a/src/soc/intel/tigerlake/pmc.c +++ b/src/soc/intel/tigerlake/pmc.c @@ -106,6 +106,8 @@ static void soc_pmc_fill_ssdt(const struct device *dev) acpigen_write_name_string("_HID", PMC_HID); acpigen_write_name_string("_DDN", "Intel(R) Tiger Lake IPC Controller"); + /* Hide the device so that Windows does not complain on missing driver */ + acpigen_write_STA(ACPI_STATUS_DEVICE_HIDDEN_ON); /* * Part of the PCH's reserved 32 MB MMIO range (0xFC800000 - 0xFE7FFFFF). -- cgit v1.2.3