For touchscreens/digitizers on poppy variants, drive the enable
GPIO high and hold in reset in romstage, then release from reset in
ramstage. This will allow coreboot to detect the presence of i2c
touchscreens/digitizers during ACPI SSDT generation (enabled in a
subsequent commit).
TEST=tested with the rest of patch train
Change-Id: I90ac4f09c343a28328f7d30254f0448cbe0c78b3
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70919
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Due to a high I2C bus load on the mainboard I2C frequency of 400 kHz
leads to poor signaling. Therefore limit the I2C speed to 100 kHz for
this bus. In addition, add a generic I2C device with 100 kHz bus speed
to the devicetree so that the OS will not switch to higher clock rates,
too.
Test= Measure the I2C signals at coreboot and OS runtime and ensure the
clock is always at 100 kHz.
Change-Id: I6b0a642cd3f5b77331663ac8c76ed0a116ae77ca
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71227
Reviewed-by: Jan Samek <jan.samek@siemens.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
When PTN3460_EARLY_INIT is selected, the PTN3460 (DP-2-LVDS-bridge) will
be initialized before all devices are initialized. This is necessary to
get a valid EDID data set into the PTN3460 before the graphic controller
is initialized in order to be able to show a splash screen.
For ptn3460_init() to work properly the I2C bus this bridge is connected
to needs to be initialized. As this I2C bus initialization would be done
too late in the normal flow, it needs to be called here explicitly
before ptn3460_init() to initialize the I2C bus with the needed
conditions. Otherwise the default I2C settings of the controller will be
used which results in a clock rate too high for this mainboard.
Test=Measure I2C bus signals and make sure that the clock is <= 400 kHz.
Change-Id: I1775fb7c2d29f765224d0e7c7ff9fcd4dbf847c5
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71226
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
APs use a lot less stack, so set up a separate stack for those in .bss.
Now that CPU_INFO_V2 is the only code path that is used, there is no
need to align stacks in c_start.S.
Change-Id: I7a681a2e3003da0400843daa5d6d6180d952abf5
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69123
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
On broadwell devices, coreboot currently disables and hides the ME PCI
interface by default, without any way to opt out of this behavior.
Add a Kconfig option to allow for leaving the ME PCI interface
enabled, but set the default to disabled as to leave the current
behavior unchanged.
Change-Id: If670d548c46834740f4e21bb2361b537807c32bf
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71196
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
On lynxpoint devices, coreboot currently disables and hides the ME PCI
interface by default, without any way to opt out of this behavior.
Add a Kconfig option to allow for leaving the ME PCI interface
enabled, but set the default to disabled as to leave the current
behavior unchanged.
Change-Id: I994cb5b05829eddad2e423a7440a9458f9952370
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71195
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
This patch drops the SoC specific implementation as DPTF driver can
now fillin those platform specific data using SoC specific macros.
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: If65976f15374ba2410b537b1646ce466ba02969b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71112
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
This patch fills in a generic platform info structure based on the
inputs from the SoC dptf header file (soc/dptf.h).
It will help to make things common and drop unnecessary back and
forth call between common code and SoC code.
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I3521882495485cef686655abd65337515bae5faa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71111
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add DEVAPC_DEBUG option and set this option to disabled by default.
This option prevents DEVAPC log flooding during the boot process. Enable
this option when we need to debug DEVAPC issues.
TEST=DEVAPC log is disabled by default.
Change-Id: I26bc0378b8a766c6a8cc4903d64a921c3e96b93f
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71158
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Replace `ShiftRight (a, b, c)` with `c = a >> b`. One case was
simplified to just `a >> b`.
Change-Id: I889012b0a3067138e6f02d3fe8e97151effb5c2a
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70840
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
This is a page to add links to other sites that have firmware related
material, or other things that are of interest to the community.
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: Icf411e67bf865426b1a3b99ecbabed2302a7b738
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70239
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
The touchscreen reset GPIO is configured as PAD_CFG_TERM_GPO with an
internal pull-down, which puts it in a state of contention when the
reset pin is released / set to high. Fix this by changing the reset
GPIO to PAD_CFG_GPO like all other poppy variants use for the
touchscreen reset.
TEST=build/boot nocturne, touchscreen still works.
Change-Id: I1ad4bb9d4194485990f54ffa7bae05f5c9a39deb
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71185
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Now that power sequencing has been implemented, switch from using ACPI
"probed" flag to "detect" flag for all i2c touchscreens. This removes
non-present devices from the SSDT and relieves the OS of the burden of
probing.
BUG=b:121309055
TEST=build/boot Windows/linux on multiple hatch variants, verify all
touchscreens functional in OS, dump ACPI and verify only i2c devices
actually present on the board have entries in the SSDT.
Change-Id: I2eae486eaa5e42cfe42ecc066a58b09fe2bd9138
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71062
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The GPIOs themselves are configured as level triggered, and the drivers
(both Linux and Windows) work better with LEVEL vs EDGE triggering.
TEST=tested with rest of patch train
Change-Id: I580348d0aabb24f0241d6e9992c5a17942bd57ab
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71061
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Some ELAN touchscreens were missing the entries for the enable GPIO
and associated delays. Add them to variants with ELAN0001 touchscreens
missing the entries.
TEST=tested with rest of patch train
Change-Id: I9ce81ad6ee8183c522d05fbe3f57af87e5895df3
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71060
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
For touchscreens on hatch variants, drive the enable GPIO high starting
in romstage, then disable the reset GPIO in ramstage. This will allow
coreboot to detect the presence of i2c touchscreens during ACPI SSDT
generation (implemented in a subsequent commit).
BUG=b:121309055
TEST=tested with rest of patch train
Change-Id: I86c5f41b7820eaf5252c276ae854a4206e09385f
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71059
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add method variant_romstage_gpio_table() with empty weak implementation
to allow variants to override as needed for touchscreen power
sequencing (to be implemented in a subsequent commit). Call method
in romstage to program any GPIOs the variant may need to set.
TEST=tested with rest of patch train
Change-Id: I1939387b5bb98d6d282fd044e9ce8780dbe0d2c5
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71058
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
With xDCI enabled, the right USB-C port does not work for USB data.
Additionally, it was disabled in stock ChromeOS firmware.
TEST=build/boot rammus, confirm right USB-C port works for booting,
under OS in Windows/Linux.
Change-Id: Ie343577d772563fa7d432b62aa8faa41d760102a
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71016
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: CoolStar <coolstarorganization@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=boot Linux 5.1x, Windows 10 on berknip/morphius, verify all
touchpad functions work correctly.
Change-Id: I9d8362719ddbfe523dd83964556b05bb8f1bb1ba
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71138
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=boot Linux 5.1x, Windows 10 on lindar, verify all touchpad
functions work correctly.
Change-Id: If2deedbd572b771c1e7793a3b3c37a3114aa2a48
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71077
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This should only contain resources that the PCI domain uses. Stolen
memory prevents the PCI domain from allocating anything where it is.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I1562396f0b747a81bbc584314956809bd3865ff9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66267
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The values in this patch were found in the following datasheets:
* 334819 (APL)
* 336561 (GLK)
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I9a4a05f9c764eecaac3d473ba612dca6cc81518f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66234
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Remove Top of Upper Usable DRAM Low from MCHC as it isn't needed.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: Ifdd8c9ba61c5b1c6b154369413470e431ce8f5b1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66231
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The current implementation of the MCRS had several issues with BARs
and MMCONF not being available:
[ 0.156231] pci 0000:00:02.0: BAR 2: assigned to efifb
[ 0.165302] pci 0000:00:18.2: can't claim BAR 0 [mem 0xddffc000-0xddffcfff 64bit]: no compatible bridge window
[ 0.192896] pci 0000:00:18.2: BAR 0: assigned [mem 0x280000000-0x280000fff 64bit]
...
[ 0.138300] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[ 0.138300] PCI: not using MMCONFIG
[ 0.148014] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[ 0.149674] [Firmware Info]: PCI: MMCONFIG at [mem 0xe0000000-0xefffffff] not reserved in ACPI motherboard resources
[ 0.149679] PCI: not using MMCONFIG
[ 0.155052] acpi PNP0A08:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
This new MCRS, tested on the Star Lite Mk IV, resolves these issues:
[ 0.158786] pci 0000:00:02.0: BAR 2: assigned to efifb
[ 0.197391] pci 0000:00:1f.1: BAR 0: assigned [mem 0x280000000-0x2800000ff 64bit]
...
[ 0.138460] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem
0xe0000000-0xefffffff] (base 0xe0000000)
[ 0.138460] PCI: not using MMCONFIG
[ 0.150889] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem
0xe0000000-0xefffffff] (base 0xe0000000)
[ 0.152548] PCI: MMCONFIG at [mem 0xe0000000-0xefffffff] reserved in ACPI motherboard resources
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: Ib6fc58efc9aadb5828251e0260622dac7ea3ef2b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66244
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=boot Linux 5.1x, Windows 10 on coral, verify all touchpad
functions work correctly.
Change-Id: I161eb953bf8bceb353cf43803ee948c522928892
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71076
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=boot Linux 5.1x, Windows 10 on nami, verify all touchpad
functions work correctly.
Change-Id: I0611da8bbea41565e603a1a1b7cc20226ba21c62
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71075
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=boot Linux 5.1x, Windows 10 on bobba, verify all touchpad
functions work correctly.
Change-Id: I4fd66be21eeff5f37b58a8922c49683a28685064
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71074
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=boot Linux 5.1x, Windows 10 on liara, verify all touchpad
functions work correctly.
Change-Id: I89ca02629803882e7ed2048a5a26868fc2de41a9
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71073
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=boot Linux 5.1x, Windows 10 on akemi/kohaku, verify all touchpad
functions work correctly.
Change-Id: Icb552caa69428908e5e3342139b578a145fa2797
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71072
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=boot ChromeOS, Linux 5.1x, Windows 10 on dewatt, verify all
touchpad functions work correctly.
Change-Id: I00efde6f007d57166cd82f76d2f389dedce57466
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71071
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=boot Linux 5.1x, Windows 10 on drawcia, verify all touchpad
functions work correctly.
Change-Id: I43eb5bc394a3fbfd4109f2e6c274ec66fc01d46d
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71070
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).
TEST=untested on brya, but tested under Windows/Linux on all other
boards in the tree using Synaptics touchpads.
Change-Id: Ia9351185b918f2d6f2d2be110b88e8310d37a03f
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71069
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Audio codec RT1011_ALC5682I_I2S is listed as a fw_config option in the
baseboard, but missing from the HDA device probe list in the variant
overridetrees, preventing it from being detected at boot.
TEST=build/boot lindar, verify audio codec identified and HDA device not
disabled by fw_config.
Change-Id: Ib40b095688aac5cf4e0a60dcac250023c4f04c9f
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71150
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <inforichland@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Now that power sequencing has been implemented, switch from using ACPI
"probed" flag to "detect" flag for all i2c touchscreens. This removes
non-present devices from the SSDT and relieves the OS of the burden of
probing.
BUG=b:121309055
TEST=build/boot Windows/linux on multiple reef variants, verify all
touchscreens functional in OS, dump ACPI and verify only i2c devices
actually present on the board have entries in the SSDT.
Change-Id: I8c90074515b1c7d3ab742768d7bbd904fec256d4
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71154
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The GPIOs themselves are configured as level triggered, and the drivers
(both Linux and Windows) work better with LEVEL vs EDGE triggering.
TEST=tested with rest of patch train
Change-Id: I1000df10eea5670bf1bc8d04c736150b6a5e26a1
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71153
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
For touchscreens on reef variants, drive the enable GPIO high starting
in romstage, then disable the reset GPIO in ramstage. This will allow
coreboot to detect the presence of i2c touchscreens during ACPI SSDT
generation (implemented in a subsequent commit). As the GPIOs are
already correct in ramstage, only the romstage ones need to be set.
BUG=b:121309055
TEST=tested with rest of patch train
Change-Id: I10d1789c8de23653bac81e1f9604a47f93fa3f7d
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71152
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add method variant_romstage_gpio_table() with empty weak implementation
to allow variants to override as needed for touchscreen power
sequencing (to be implemented in a subsequent commit). Call method
in romstage to program any GPIOs the variant may need to set.
TEST=tested with rest of patch train
Change-Id: Id3ab412183e5c5d534b2e1dea3222c729c25118b
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71151
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Matt DeVillier