Files
lbmk/config/coreboot/default/patches/0021-mb-dell-Add-Latitude-E6520-Sandy-Bridge.patch
T
Leah Rowe dbe24b039d coreboot/default: Update to 97bc693ab (2024-07-29)
Several patches are now merged upstream and no longer needed
in lbmk, such as the HP EliteBook 8560w patch, and related
patches. Some patches were changed, for example the Dell Latitude
ivb/snb laptops are now variants in coreboot, instead of being
individual ports; now they re-use the same base code.

This this, the corresponding files under config/submodules
have changed, for things like 3rdparty submodules e.g. libgfxinit,
and tarballs e.g. crossgcc.

This is long overdue, and will enable more boards to be added.
This newer revision will be used in the next release, and some
follow-up patches will merge these trees into default:

* coreboot/haswell
* coreboot/dell

Signed-off-by: Leah Rowe <leah@libreboot.org>
2024-08-09 20:50:37 +01:00

450 lines
15 KiB
Diff

From 1111dcab65ca83f175f1bb9c0496cae24fbfb7c2 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 21/39] 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$j=KK{`uSX*DeU1oJg=+RT6)rLe6%2>Ci^!5ao=*gS}wFN=nUf`fTF
zM?Gb5ycWjM7I?MJ!2;w|LFg=UoLq-ytr2iemG)AsW}bI4X9PK}T5UKsQi7anu=tD6
zf|={kXkNeQBD>6bQ3taC8XJOJ^e40_ydyfr&a41L^1)jNrK<B_wV}+ZE`p;QK=rDz
zTw`SJ+e`Oc*icaF4INF51Xg*~ts@m)@9ETt(*@N7yy0)Ddce%i9{^k2kbd8=Wns~P
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z%3cBfcN;Avikpz-gmw_6mymu!Unk0YgnUfsk3{*6kQ;=S*p(_fS!JhDyYh^k?6uRk
z?8--W@~NHvY*+ra6SG9iC1s^V)<|@Rqzp*pd5NBslrs`JC(&Oeg~v}CnJ$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
--
2.39.2