From 60d800537bd21ba788efcc6a3b41549e893e3da8 Mon Sep 17 00:00:00 2001
From: Jonathan Zhang <jonzhang@fb.com>
Date: Mon, 21 Sep 2020 17:19:21 -0700
Subject: mb/ocp/deltalake: add LPC device entry in ACPI

PCH LPC device is on CSTACK. Add LPC ACPI device entry.

Without this change, following error message shows up in target OS
boot log:
ACPI BIOS Error (bug): Failure looking up [\_SB.PCI0.LPCB], AE_NOT_FOUND (20180105/dswload-211)
ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20180105/psobject-252)
ACPI Error: AE_NOT_FOUND, (SSDT:COREBOOT) while loading table (20180105/tbxfload-228)
ACPI Error: 1 table load failures, 1 successful (20180105/tbxfload-246)

Also TPM device is not created.

TESTED=Booted DeltaLake DVT, run following command in target OS:
[root@dhcp-100-96-192-153 ~]# dmesg | grep tpm
[    7.331890] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1B, rev-id 16)

Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Change-Id: I8614f6951389bd5c8f8f33522d0a9a9160ac3f66
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45592
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
---
 src/mainboard/ocp/deltalake/dsdt.asl | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mainboard/ocp/deltalake/dsdt.asl b/src/mainboard/ocp/deltalake/dsdt.asl
index c74b5fecb8..4d784f304e 100644
--- a/src/mainboard/ocp/deltalake/dsdt.asl
+++ b/src/mainboard/ocp/deltalake/dsdt.asl
@@ -20,4 +20,10 @@ DefinitionBlock(
 
 	// CPX-SP ACPI tables
 	#include <soc/intel/xeon_sp/cpx/acpi/uncore.asl>
+
+	// LPC related entries
+	Scope (\_SB.PC00)
+	{
+		#include <soc/intel/common/block/acpi/acpi/lpc.asl>
+	}
 }
-- 
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