From c58f67441194f7fc80f0a24794d5af907c25f332 Mon Sep 17 00:00:00 2001
From: Ritul Guru <ritul.bits@gmail.com>
Date: Wed, 6 Jul 2022 15:17:38 +0530
Subject: soc/amd/picasso: Add MP2 I2C0 and I2C1 controller ACPI devices

This change is to allow AMD MP2 I2C OS driver to access
I2C0/1 devices when MP2 firmware is loaded.

Change-Id: Iaf25eb4dcf949e4b512ec0e86dbe5ccbc91c3d24
Signed-off-by: Ritul Guru <ritul.bits@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65673
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/soc/amd/picasso/acpi/sb_fch.asl     | 74 +++++++++++++++++++++++++++++++++
 src/soc/amd/picasso/include/soc/iomap.h |  2 +
 2 files changed, 76 insertions(+)

(limited to 'src/soc/amd/picasso')

diff --git a/src/soc/amd/picasso/acpi/sb_fch.asl b/src/soc/amd/picasso/acpi/sb_fch.asl
index bc14930fa8..7ab3b17fcb 100644
--- a/src/soc/amd/picasso/acpi/sb_fch.asl
+++ b/src/soc/amd/picasso/acpi/sb_fch.asl
@@ -227,6 +227,80 @@ Device (FUR3) {
 	AOAC_DEVICE(FCH_AOAC_DEV_UART3, 0)
 }
 
+#if CONFIG(PSP_LOAD_MP2_FW)
+Device (I2C0) {
+	Name (_HID, "AMDI0011")
+	Name (_UID, 0x0)
+	Method (_CRS, 0) {
+		Local0 = ResourceTemplate() {
+			Interrupt (
+				ResourceConsumer,
+				Edge,
+				ActiveHigh,
+				Exclusive, , , IRQR)
+			{ 0 }
+			Memory32Fixed (ReadWrite, APU_I2C0_BASE, 0x1000)
+		}
+		CreateDWordField (Local0, IRQR._INT, IRQN)
+		If (PICM) {
+			IRQN = II20
+		} Else {
+			IRQN = PI20
+		}
+		If (IRQN == 0x1f) {
+			Return (ResourceTemplate() {
+				Memory32Fixed (ReadWrite, APU_I2C0_BASE, 0x1000)
+			})
+		} Else {
+			Return (Local0)
+		}
+	}
+
+	Method (_STA, 0x0, NotSerialized)
+	{
+		Return (0x0F)
+	}
+
+	AOAC_DEVICE(5, 0)
+}
+
+Device (I2C1) {
+	Name (_HID, "AMDI0011")
+	Name (_UID, 0x1)
+	Method (_CRS, 0) {
+		Local0 = ResourceTemplate() {
+			Interrupt (
+				ResourceConsumer,
+				Edge,
+				ActiveHigh,
+				Exclusive, , , IRQR)
+			{ 0 }
+			Memory32Fixed (ReadWrite, APU_I2C1_BASE, 0x1000)
+		}
+		CreateDWordField (Local0, IRQR._INT, IRQN)
+		If (PICM) {
+			IRQN = II21
+		} Else {
+			IRQN = PI21
+		}
+		If (IRQN == 0x1f) {
+			Return (ResourceTemplate() {
+				Memory32Fixed (ReadWrite, APU_I2C1_BASE, 0x1000)
+			})
+		} Else {
+			Return (Local0)
+		}
+	}
+
+	Method (_STA, 0x0, NotSerialized)
+	{
+		Return (0x0F)
+	}
+
+	AOAC_DEVICE(6, 0)
+}
+#endif /* CONFIG(PSP_LOAD_MP2_FW) */
+
 Device (I2C2) {
 	Name (_HID, "AMDI0010")
 	Name (_UID, 0x2)
diff --git a/src/soc/amd/picasso/include/soc/iomap.h b/src/soc/amd/picasso/include/soc/iomap.h
index 853008bcbc..d6b46b7fa7 100644
--- a/src/soc/amd/picasso/include/soc/iomap.h
+++ b/src/soc/amd/picasso/include/soc/iomap.h
@@ -39,6 +39,8 @@
 
 #if ENV_X86
 
+#define APU_I2C0_BASE			0xfedc2000
+#define APU_I2C1_BASE			0xfedc3000
 #define APU_I2C2_BASE			0xfedc4000
 #define APU_I2C3_BASE			0xfedc5000
 #define APU_I2C4_BASE			0xfedc6000
-- 
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