coreboot/default: Re-base all patches

There were a lot of unnecessary patches, such as the VRAM
patches; as Nicholas Chin has explained to me, the drivers
for these machines will just allocate what RAM they want
anyway, so in a lot of cases the extra allocated Video RAM
simply reduces the total amount of memory for other uses.

In general, we have a lot of patches that have existed for
years. A much more aggressive sweep will be done in the next
major audit, especially when the revisions are updated again.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 449 insertions, 0 deletions

diff --git a/config/coreboot/default/patches/0011-mb-dell-Add-Latitude-E6520-Sandy-Bridge.patch b/config/coreboot/default/patches/0011-mb-dell-Add-Latitude-E6520-Sandy-Bridge.patch
new file mode 100644
index 00000000..2b378406
--- /dev/null
+++ b/config/coreboot/default/patches/0011-mb-dell-Add-Latitude-E6520-Sandy-Bridge.patch
@@ -0,0 +1,449 @@
+From 53abe363f2fa038080a976f2d3a2c63ee8da9022 Mon Sep 17 00:00:00 2001
+From: Nicholas Chin <nic.c3.14@gmail.com>
+Date: Wed, 31 Jan 2024 22:07:25 -0700
+Subject: [PATCH 11/51] mb/dell: Add Latitude E6520 (Sandy Bridge)
+
+Mainboard is PAL60/LA-6562P (UMA). The version with an Nvidia dGPU was
+not tested. I do not physically have this system; someone with physical
+access to one sent me the output of autoport which I then modified to
+produce this port. I was also sent the VBT binary, which was obtained
+from `/sys/kernel/debug/dri/0/i915_vbt` while running version A08 of the
+vendor firmware.
+
+This was originally tested and found to be working as a standalone board
+port in Libreboot, but this variant based port in upstream coreboot has
+not been tested.
+
+This can be internally flashed by sending a command to the EC, which
+causes the EC to pull the FDO pin low and the firmware to skip setting
+up any chipset based write protections [1]. The EC is the SMSC MEC5055,
+which seems to be compatible with the existing MEC5035 code.
+
+[1] https://gitlab.com/nic3-14159/dell-flash-unlock
+
+Change-Id: Ibdd40cc15642b8d404159d5962670ccc4167a9ec
+Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
+---
+ src/mainboard/dell/snb_ivb_latitude/Kconfig   |   9 +
+ .../dell/snb_ivb_latitude/Kconfig.name        |   3 +
+ .../snb_ivb_latitude/variants/e6520/data.vbt  | Bin 0 -> 6144 bytes
+ .../variants/e6520/early_init.c               |  31 +++
+ .../snb_ivb_latitude/variants/e6520/gpio.c    | 190 ++++++++++++++++++
+ .../variants/e6520/hda_verb.c                 |  32 +++
+ .../variants/e6520/overridetree.cb            |  35 ++++
+ 7 files changed, 300 insertions(+)
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e6520/data.vbt
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e6520/early_init.c
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e6520/gpio.c
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e6520/hda_verb.c
+ create mode 100644 src/mainboard/dell/snb_ivb_latitude/variants/e6520/overridetree.cb
+
+diff --git a/src/mainboard/dell/snb_ivb_latitude/Kconfig b/src/mainboard/dell/snb_ivb_latitude/Kconfig
+index d2786970ee..72bdc96c0a 100644
+--- a/src/mainboard/dell/snb_ivb_latitude/Kconfig
++++ b/src/mainboard/dell/snb_ivb_latitude/Kconfig
+@@ -23,6 +23,12 @@ config BOARD_DELL_LATITUDE_E6420
+ 	select MAINBOARD_USES_IFD_GBE_REGION
+ 	select SOUTHBRIDGE_INTEL_BD82X6X
+ 
++config BOARD_DELL_LATITUDE_E6520
++	select BOARD_DELL_SNB_IVB_LATITUDE_COMMON
++	select BOARD_ROMSIZE_KB_10240
++	select MAINBOARD_USES_IFD_GBE_REGION
++	select SOUTHBRIDGE_INTEL_BD82X6X
++
+ config BOARD_DELL_LATITUDE_E5530
+ 	select BOARD_DELL_SNB_IVB_LATITUDE_COMMON
+ 	select BOARD_ROMSIZE_KB_12288
+@@ -50,6 +56,7 @@ config MAINBOARD_DIR
+ 
+ config MAINBOARD_PART_NUMBER
+ 	default "Latitude E6420" if BOARD_DELL_LATITUDE_E6420
++	default "Latitude E6520" if BOARD_DELL_LATITUDE_E6520
+ 	default "Latitude E5530" if BOARD_DELL_LATITUDE_E5530
+ 	default "Latitude E6430" if BOARD_DELL_LATITUDE_E6430
+ 	default "Latitude E6530" if BOARD_DELL_LATITUDE_E6530
+@@ -62,11 +69,13 @@ config USBDEBUG_HCD_INDEX
+ 
+ config VARIANT_DIR
+ 	default "e6420" if BOARD_DELL_LATITUDE_E6420
++	default "e6520" if BOARD_DELL_LATITUDE_E6520
+ 	default "e5530" if BOARD_DELL_LATITUDE_E5530
+ 	default "e6430" if BOARD_DELL_LATITUDE_E6430
+ 	default "e6530" if BOARD_DELL_LATITUDE_E6530
+ 
+ config VGA_BIOS_ID
++	default "8086,0116" if BOARD_DELL_LATITUDE_E6520
+ 	default "8086,0166" if BOARD_DELL_LATITUDE_E5530
+ 	default "8086,0126" if BOARD_DELL_LATITUDE_E6420
+ 	default "8086,0166" if BOARD_DELL_LATITUDE_E6430 \
+diff --git a/src/mainboard/dell/snb_ivb_latitude/Kconfig.name b/src/mainboard/dell/snb_ivb_latitude/Kconfig.name
+index 257d428a70..c7665ac263 100644
+--- a/src/mainboard/dell/snb_ivb_latitude/Kconfig.name
++++ b/src/mainboard/dell/snb_ivb_latitude/Kconfig.name
+@@ -3,6 +3,9 @@
+ config BOARD_DELL_LATITUDE_E6420
+ 	bool "Latitude E6420"
+ 
++config BOARD_DELL_LATITUDE_E6520
++	bool "Latitude E6520"
++
+ config BOARD_DELL_LATITUDE_E5530
+ 	bool "Latitude E5530"
+ 
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e6520/data.vbt b/src/mainboard/dell/snb_ivb_latitude/variants/e6520/data.vbt
+new file mode 100644
+index 0000000000000000000000000000000000000000..0ef16ee7cb482d2cb91ea80c3f419759355f7ba0
+GIT binary patch
+literal 6144
+zcmeHKZ){Ul6hE);wSB#PZ|mL$bQ^!}HW(eF@H)0JafGfbqsZ9G21{L7Sg{or$5uN)
+z_QgG55e!O(8p8*oBhhF`l$n^QF%rN;rzFNqqcPzFCd5QSB1Y7RKt1=pmTk1aFo9^Y
+z+x+gi_nvdlJ@?#m&wZWW=G#bH>ze$J`&!oe*Q|E0r!)d89LYY8b$aowZEoG-uiIF+
+z#n;$ezm6V<nGnvtc?lrGaf)1_);!W0?uqnojdw-1MQM|dwy`OcF?M@A)KgVV*N2}7
+zcXx+--0R}IwzW3-+`f2k?^Av5V7MpRO-q(9rn_R1@Xlz2Ztdy`$Gf6^w6~|bKi!!7
+z9;xq*^~bxmZQn^<^<`+2s=BdSM%VW2#FguN<FO^QuDhGIFquBu677q|cSj>jWFixQ
+z)4V8f0Gt`D`+>9Fr~tnJ76EJ`5D_F1cn-`0$RgN9unI6kfYkzIiO?W`ON4+34lv1_
+zNdPDkq1cf$p8^EW;TS*O$CdzNo#1fbIG_Oi0T(ti0jwyt0le_p_HlvX^CFvr)>$b>
+zO-z8^CSU`w=mIK7Q)@9fR;XUzrFu{T=rRyygIZBpU9+Or>+?4R9%~G?Y-|g)Z`Sti
+z+do(U*Wb-xR~DzjS<75#=Us4sH^C9U2FCbND7L7u$>M|<;t=AnRfI9C0v8c~AVg7t
+zIU<3D2oK^>L;%r(*o=4*u?Mja@dDyi#4zFn;(f#^#3*76aUSs#;tJv#La-6YLRdQB
+zdcvfERkvH?k~GJlfM<HR476j(@nfm+47<!Ult@^ua5M3h6A}q=C0ognX9aX4mxq)U
+zXOhm=DbLene?C%_16Q)2NRV@Yacz`D;{V>Ve-1?&ZXy}n)YwnVAgNlz#zX;=IX)-F
+z)9LL3lbEdY5Co)LsK?vP)7s}G(5xduE!Y!#Wgh<IN3(3ey=-oWU(9aEJ_HzV53Jbq
+zj5B5RjzLUt>_T&xi$uUA#0e}X3D~`J(bHz;DgTa@GrpW6=>eZwJeNYYo*GjF=``;(
+zuoQ3|V5YoKd$j=KK{`uSX*DeU1oJg=+RT6)rLe6%2>Ci^!5ao=*gS}wFN=nUf`fTF
+zM?Gb5ycWjM7I?MJ!2;w|LFg=UoLq-ytr2iemG)AsW}bI4X9PK}T5UKsQi7anu=tD6
+zf|={kXkNeQBD>6bQ3taC8XJOJ^e40_ydyfr&a41L^1)jNrK<B_wV}+ZE`p;QK=rDz
+zTw`SJ+e`Oc*icaF4INF51Xg*~ts@m)@9ETt(*@N7yy0)Ddce%i9{^k2kbd8=Wns~P
+zWBD$~himxDharxF@f!ti^0$~9Zxt{tg`@Dbl_0Ki2Xp_MEw-<z6qgep;XYmR%Dl-F
+z%3cBfcN;Avikpz-gmw_6mymu!Unk0YgnUfsk3{*6kQ;=S*p(_fS!JhDyYh^k?6uRk
+z?8--W@~NHvY*+ra6SG9iC1s^V)<|@Rqzp*pd5NBslrs`JC(&Oeg~v}CnJ$x+)iP<8
+z=`LA0Ad@39{XkZ}kjXbP{YzHtS!70*yy%LcnJ#cz4u%*Wq!^d*AVMZdr&l=#Qgik~
+ze2l)cX+!kF9EaFhY;0^Uo_#VNC?7K2Tf=ZR1y5);b!mCGG?<cc#M0rtHKYeKi%BE?
+z@Y6|P8fx#li}c`Uv24UGyZaM0To;Ep<_AWZA1t~bFgI)uf}&Eq=L_Cs89=>wnT0Vx
+z-jp>o1ffJNommZ4?=TIPlePIw0hgQ706f*tBC`#pg>9&zRHe>J2%RxBTrOc6Adh9E
+ziJr`?VQH!N!_GkoKaoq|+3$^Ae0#sUxXlmM1Huq~g<=Ls?ILv+nQcH%PQedGOlH=Q
+z77rMcJlH4Mkc#U2(IDv>rsm1aHpsdL_RdT^i_ACcQUMIJcSus}*(?CIiy^#^=t=g1
+z+*^Zbh30&^#_bKclSy9pL$<B~pK8m*sLpIdnHM@W$nA7Ea@Z`x27K?aNK<@lCW(2L
+zb@kB3H8kKy4W3Hu)NN|kd!DL^o#iR9a{QYV-Wl&r&hmIFX{ezkIV<4zFiVUQ@K>ao
+z00DnFy~Uek!JRwhVX!of0)$Sa*X^S~LMQH0<E(UUx}L=|;Kgw(r(4q=nD)T52c|tR
+O?SW|zOncy=dEg(6JAK&z
+
+literal 0
+HcmV?d00001
+
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e6520/early_init.c b/src/mainboard/dell/snb_ivb_latitude/variants/e6520/early_init.c
+new file mode 100644
+index 0000000000..b6415a428b
+--- /dev/null
++++ b/src/mainboard/dell/snb_ivb_latitude/variants/e6520/early_init.c
+@@ -0,0 +1,31 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#include <bootblock_common.h>
++#include <device/pci_ops.h>
++#include <ec/dell/mec5035/mec5035.h>
++#include <southbridge/intel/bd82x6x/pch.h>
++
++const struct southbridge_usb_port mainboard_usb_ports[] = {
++	{ 1, 1, 0 },
++	{ 1, 1, 0 },
++	{ 1, 1, 1 },
++	{ 1, 1, 1 },
++	{ 1, 0, 2 },
++	{ 1, 1, 2 },
++	{ 1, 0, 3 },
++	{ 1, 0, 3 },
++	{ 1, 1, 5 },
++	{ 1, 1, 5 },
++	{ 1, 1, 7 },
++	{ 1, 1, 6 },
++	{ 1, 0, 6 },
++	{ 1, 0, 7 },
++};
++
++void bootblock_mainboard_early_init(void)
++{
++	pci_write_config16(PCH_LPC_DEV, LPC_EN, CNF1_LPC_EN | MC_LPC_EN
++			| KBC_LPC_EN | FDD_LPC_EN | LPT_LPC_EN
++			| COMB_LPC_EN | COMA_LPC_EN);
++	mec5035_early_init();
++}
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e6520/gpio.c b/src/mainboard/dell/snb_ivb_latitude/variants/e6520/gpio.c
+new file mode 100644
+index 0000000000..61f01816c4
+--- /dev/null
++++ b/src/mainboard/dell/snb_ivb_latitude/variants/e6520/gpio.c
+@@ -0,0 +1,190 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#include <southbridge/intel/common/gpio.h>
++
++static const struct pch_gpio_set1 pch_gpio_set1_mode = {
++	.gpio0 = GPIO_MODE_GPIO,
++	.gpio1 = GPIO_MODE_NATIVE,
++	.gpio2 = GPIO_MODE_GPIO,
++	.gpio3 = GPIO_MODE_NATIVE,
++	.gpio4 = GPIO_MODE_GPIO,
++	.gpio5 = GPIO_MODE_NATIVE,
++	.gpio6 = GPIO_MODE_GPIO,
++	.gpio7 = GPIO_MODE_GPIO,
++	.gpio8 = GPIO_MODE_GPIO,
++	.gpio9 = GPIO_MODE_NATIVE,
++	.gpio10 = GPIO_MODE_NATIVE,
++	.gpio11 = GPIO_MODE_NATIVE,
++	.gpio12 = GPIO_MODE_NATIVE,
++	.gpio13 = GPIO_MODE_GPIO,
++	.gpio14 = GPIO_MODE_GPIO,
++	.gpio15 = GPIO_MODE_GPIO,
++	.gpio16 = GPIO_MODE_GPIO,
++	.gpio17 = GPIO_MODE_GPIO,
++	.gpio18 = GPIO_MODE_NATIVE,
++	.gpio19 = GPIO_MODE_GPIO,
++	.gpio20 = GPIO_MODE_NATIVE,
++	.gpio21 = GPIO_MODE_GPIO,
++	.gpio22 = GPIO_MODE_GPIO,
++	.gpio23 = GPIO_MODE_NATIVE,
++	.gpio24 = GPIO_MODE_GPIO,
++	.gpio25 = GPIO_MODE_NATIVE,
++	.gpio26 = GPIO_MODE_NATIVE,
++	.gpio27 = GPIO_MODE_GPIO,
++	.gpio28 = GPIO_MODE_GPIO,
++	.gpio29 = GPIO_MODE_GPIO,
++	.gpio30 = GPIO_MODE_GPIO,
++	.gpio31 = GPIO_MODE_NATIVE,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_direction = {
++	.gpio0 = GPIO_DIR_INPUT,
++	.gpio2 = GPIO_DIR_INPUT,
++	.gpio4 = GPIO_DIR_INPUT,
++	.gpio6 = GPIO_DIR_INPUT,
++	.gpio7 = GPIO_DIR_INPUT,
++	.gpio8 = GPIO_DIR_INPUT,
++	.gpio13 = GPIO_DIR_INPUT,
++	.gpio14 = GPIO_DIR_INPUT,
++	.gpio15 = GPIO_DIR_INPUT,
++	.gpio16 = GPIO_DIR_INPUT,
++	.gpio17 = GPIO_DIR_INPUT,
++	.gpio19 = GPIO_DIR_INPUT,
++	.gpio21 = GPIO_DIR_INPUT,
++	.gpio22 = GPIO_DIR_INPUT,
++	.gpio24 = GPIO_DIR_INPUT,
++	.gpio27 = GPIO_DIR_INPUT,
++	.gpio28 = GPIO_DIR_INPUT,
++	.gpio29 = GPIO_DIR_INPUT,
++	.gpio30 = GPIO_DIR_OUTPUT,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_level = {
++	.gpio30 = GPIO_LEVEL_HIGH,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_reset = {
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_invert = {
++	.gpio0 = GPIO_INVERT,
++	.gpio8 = GPIO_INVERT,
++	.gpio14 = GPIO_INVERT,
++};
++
++static const struct pch_gpio_set1 pch_gpio_set1_blink = {
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_mode = {
++	.gpio32 = GPIO_MODE_NATIVE,
++	.gpio33 = GPIO_MODE_GPIO,
++	.gpio34 = GPIO_MODE_GPIO,
++	.gpio35 = GPIO_MODE_GPIO,
++	.gpio36 = GPIO_MODE_GPIO,
++	.gpio37 = GPIO_MODE_GPIO,
++	.gpio38 = GPIO_MODE_GPIO,
++	.gpio39 = GPIO_MODE_GPIO,
++	.gpio40 = GPIO_MODE_NATIVE,
++	.gpio41 = GPIO_MODE_NATIVE,
++	.gpio42 = GPIO_MODE_NATIVE,
++	.gpio43 = GPIO_MODE_NATIVE,
++	.gpio44 = GPIO_MODE_NATIVE,
++	.gpio45 = GPIO_MODE_GPIO,
++	.gpio46 = GPIO_MODE_NATIVE,
++	.gpio47 = GPIO_MODE_NATIVE,
++	.gpio48 = GPIO_MODE_GPIO,
++	.gpio49 = GPIO_MODE_GPIO,
++	.gpio50 = GPIO_MODE_NATIVE,
++	.gpio51 = GPIO_MODE_GPIO,
++	.gpio52 = GPIO_MODE_GPIO,
++	.gpio53 = GPIO_MODE_NATIVE,
++	.gpio54 = GPIO_MODE_GPIO,
++	.gpio55 = GPIO_MODE_NATIVE,
++	.gpio56 = GPIO_MODE_NATIVE,
++	.gpio57 = GPIO_MODE_GPIO,
++	.gpio58 = GPIO_MODE_NATIVE,
++	.gpio59 = GPIO_MODE_NATIVE,
++	.gpio60 = GPIO_MODE_GPIO,
++	.gpio61 = GPIO_MODE_NATIVE,
++	.gpio62 = GPIO_MODE_NATIVE,
++	.gpio63 = GPIO_MODE_NATIVE,
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_direction = {
++	.gpio33 = GPIO_DIR_INPUT,
++	.gpio34 = GPIO_DIR_OUTPUT,
++	.gpio35 = GPIO_DIR_INPUT,
++	.gpio36 = GPIO_DIR_INPUT,
++	.gpio37 = GPIO_DIR_INPUT,
++	.gpio38 = GPIO_DIR_INPUT,
++	.gpio39 = GPIO_DIR_INPUT,
++	.gpio45 = GPIO_DIR_OUTPUT,
++	.gpio48 = GPIO_DIR_INPUT,
++	.gpio49 = GPIO_DIR_OUTPUT,
++	.gpio51 = GPIO_DIR_INPUT,
++	.gpio52 = GPIO_DIR_INPUT,
++	.gpio54 = GPIO_DIR_INPUT,
++	.gpio57 = GPIO_DIR_INPUT,
++	.gpio60 = GPIO_DIR_OUTPUT,
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_level = {
++	.gpio34 = GPIO_LEVEL_HIGH,
++	.gpio45 = GPIO_LEVEL_LOW,
++	.gpio49 = GPIO_LEVEL_LOW,
++	.gpio60 = GPIO_LEVEL_HIGH,
++};
++
++static const struct pch_gpio_set2 pch_gpio_set2_reset = {
++};
++
++static const struct pch_gpio_set3 pch_gpio_set3_mode = {
++	.gpio64 = GPIO_MODE_NATIVE,
++	.gpio65 = GPIO_MODE_NATIVE,
++	.gpio66 = GPIO_MODE_NATIVE,
++	.gpio67 = GPIO_MODE_NATIVE,
++	.gpio68 = GPIO_MODE_GPIO,
++	.gpio69 = GPIO_MODE_GPIO,
++	.gpio70 = GPIO_MODE_GPIO,
++	.gpio71 = GPIO_MODE_GPIO,
++	.gpio72 = GPIO_MODE_NATIVE,
++	.gpio73 = GPIO_MODE_NATIVE,
++	.gpio74 = GPIO_MODE_NATIVE,
++	.gpio75 = GPIO_MODE_NATIVE,
++};
++
++static const struct pch_gpio_set3 pch_gpio_set3_direction = {
++	.gpio68 = GPIO_DIR_INPUT,
++	.gpio69 = GPIO_DIR_INPUT,
++	.gpio70 = GPIO_DIR_INPUT,
++	.gpio71 = GPIO_DIR_INPUT,
++};
++
++static const struct pch_gpio_set3 pch_gpio_set3_level = {
++};
++
++static const struct pch_gpio_set3 pch_gpio_set3_reset = {
++};
++
++const struct pch_gpio_map mainboard_gpio_map = {
++	.set1 = {
++		.mode		= &pch_gpio_set1_mode,
++		.direction	= &pch_gpio_set1_direction,
++		.level		= &pch_gpio_set1_level,
++		.blink		= &pch_gpio_set1_blink,
++		.invert		= &pch_gpio_set1_invert,
++		.reset		= &pch_gpio_set1_reset,
++	},
++	.set2 = {
++		.mode		= &pch_gpio_set2_mode,
++		.direction	= &pch_gpio_set2_direction,
++		.level		= &pch_gpio_set2_level,
++		.reset		= &pch_gpio_set2_reset,
++	},
++	.set3 = {
++		.mode		= &pch_gpio_set3_mode,
++		.direction	= &pch_gpio_set3_direction,
++		.level		= &pch_gpio_set3_level,
++		.reset		= &pch_gpio_set3_reset,
++	},
++};
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e6520/hda_verb.c b/src/mainboard/dell/snb_ivb_latitude/variants/e6520/hda_verb.c
+new file mode 100644
+index 0000000000..ae376691e7
+--- /dev/null
++++ b/src/mainboard/dell/snb_ivb_latitude/variants/e6520/hda_verb.c
+@@ -0,0 +1,32 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#include <device/azalia_device.h>
++
++const u32 cim_verb_data[] = {
++	0x111d76e7,	/* Codec Vendor / Device ID: IDT */
++	0x10280494,	/* Subsystem ID */
++	11,		/* Number of 4 dword sets */
++	AZALIA_SUBVENDOR(0, 0x10280494),
++	AZALIA_PIN_CFG(0, 0x0a, 0x03a11020),
++	AZALIA_PIN_CFG(0, 0x0b, 0x0321101f),
++	AZALIA_PIN_CFG(0, 0x0c, 0x400000f0),
++	AZALIA_PIN_CFG(0, 0x0d, 0x90170110),
++	AZALIA_PIN_CFG(0, 0x0e, 0x23011050),
++	AZALIA_PIN_CFG(0, 0x0f, 0x23a1102e),
++	AZALIA_PIN_CFG(0, 0x10, 0x400000f3),
++	AZALIA_PIN_CFG(0, 0x11, 0x400000f2),
++	AZALIA_PIN_CFG(0, 0x1f, 0x400000f0),
++	AZALIA_PIN_CFG(0, 0x20, 0x400000f0),
++
++	0x80862805,	/* Codec Vendor / Device ID: Intel */
++	0x80860101,	/* Subsystem ID */
++	4,		/* Number of 4 dword sets */
++	AZALIA_SUBVENDOR(3, 0x80860101),
++	AZALIA_PIN_CFG(3, 0x05, 0x18560010),
++	AZALIA_PIN_CFG(3, 0x06, 0x18560020),
++	AZALIA_PIN_CFG(3, 0x07, 0x18560030),
++};
++
++const u32 pc_beep_verbs[0] = {};
++
++AZALIA_ARRAY_SIZES;
+diff --git a/src/mainboard/dell/snb_ivb_latitude/variants/e6520/overridetree.cb b/src/mainboard/dell/snb_ivb_latitude/variants/e6520/overridetree.cb
+new file mode 100644
+index 0000000000..f90f2dee1f
+--- /dev/null
++++ b/src/mainboard/dell/snb_ivb_latitude/variants/e6520/overridetree.cb
+@@ -0,0 +1,35 @@
++## SPDX-License-Identifier: GPL-2.0-or-later
++
++chip northbridge/intel/sandybridge
++	device domain 0 on
++		subsystemid 0x1028 0x0494 inherit
++
++		device ref igd on
++			register "gpu_cpu_backlight" = "0x00001312"
++			register "gpu_pch_backlight" = "0x13121312"
++		end
++
++		chip southbridge/intel/bd82x6x
++			register "usb_port_config" = "{
++				{ 1, 1, 0 },
++				{ 1, 1, 0 },
++				{ 1, 1, 1 },
++				{ 1, 1, 1 },
++				{ 1, 0, 2 },
++				{ 1, 1, 2 },
++				{ 1, 1, 3 },
++				{ 1, 1, 3 },
++				{ 1, 1, 5 },
++				{ 1, 1, 5 },
++				{ 1, 1, 7 },
++				{ 1, 1, 6 },
++				{ 1, 0, 6 },
++				{ 1, 0, 7 },
++			}"
++
++			device ref sata1 on
++				register "sata_port_map" = "0x3b"
++			end
++		end
++	end
++end
+-- 
+2.39.5
+