libreboot-lbmk/resources/coreboot/default/patches/0020-add-c3-and-reconfigure-clockgen-for-macbook21.patch

From 97e2e76aaa61ce2bdbfd98631fa553d9879b2042 Mon Sep 17 00:00:00 2001
From: Vitali64 <5405891-vitali64yt@users.noreply.gitlab.com>
Date: Tue, 26 Oct 2021 17:48:52 +0200
Subject: [PATCH 1/1] add c3 and reconfigure clockgen for macbook21

---
 src/mainboard/apple/macbook21/Kconfig       |  1 +
 src/mainboard/apple/macbook21/cstates.c     | 13 +++++++++++++
 src/mainboard/apple/macbook21/devicetree.cb |  6 ++++++
 3 files changed, 20 insertions(+)

diff --git a/src/mainboard/apple/macbook21/Kconfig b/src/mainboard/apple/macbook21/Kconfig
index 5d8f6267d1..5ce1d64e08 100644
--- a/src/mainboard/apple/macbook21/Kconfig
+++ b/src/mainboard/apple/macbook21/Kconfig
@@ -16,6 +16,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select HAVE_ACPI_TABLES
 	select HAVE_ACPI_RESUME
 	select I945_LVDS
+	select DRIVERS_I2C_CK505
 
 config MAINBOARD_DIR
 	string
diff --git a/src/mainboard/apple/macbook21/cstates.c b/src/mainboard/apple/macbook21/cstates.c
index 8f295040f7..9673c11f5c 100644
--- a/src/mainboard/apple/macbook21/cstates.c
+++ b/src/mainboard/apple/macbook21/cstates.c
@@ -29,6 +29,19 @@ static acpi_cstate_t cst_entries[] = {
 			.addrh = 0,
 		}
 	},
+	{
+		.ctype = 3,
+		.latency = 17,
+		.power = 250,
+		.resource = {
+			.space_id = ACPI_ADDRESS_SPACE_FIXED,
+			.bit_width = ACPI_FFIXEDHW_VENDOR_INTEL,
+			.bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT,
+			.access_size = ACPI_ACCESS_SIZE_UNDEFINED,
+			.addrl = 0x20,
+			.addrh = 0,
+		}
+	},
 };
 
 int get_cst_entries(acpi_cstate_t **entries)
diff --git a/src/mainboard/apple/macbook21/devicetree.cb b/src/mainboard/apple/macbook21/devicetree.cb
index bcce778cb1..16025d6fbb 100644
--- a/src/mainboard/apple/macbook21/devicetree.cb
+++ b/src/mainboard/apple/macbook21/devicetree.cb
@@ -104,7 +104,13 @@ chip northbridge/intel/i945
 			end
 			device pci 1f.3 on # SMBUS
 				subsystemid 0x8086 0x7270
+				chip drivers/i2c/ck505
+					register "mask" = "{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }"
+					register "regs" = "{ 0x77, 0x77, 0x2d, 0x00, 0x21, 0x10, 0x3b, 0x06, 0x07, 0x0f, 0xf0, 0x01, 0x1e, 0x7f, 0x80, 0x80, 0x10, 0x08, 0x04, 0x01 }"
+					device i2c 69 on end
+				end
 			end
+
 		end
 	end
 end
-- 
2.25.1