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Nexus 7 has OTG-cable microUSB port, enable OTG mode. USB peripheral
devices now can be connected to Nexus 7 using OTG adapter, switching
USB port into host mode.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The host-wakeup GPIO is now marked as deprecated in the broadcom-bluetooth
device-tree binding, it's replaced with the host-wakeup interrupt. Update
Tegra device-trees to the recent version of the Bluetooth binding.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Use skin temperature for maintaining temperature that is suitable
specifically for Nexus 7. Add CPU thermal zone that protects silicon.
All these changes don't make a significant difference, but it is a
more correct definition of thermal zones.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The TEMP_ALERT pin of LM90 temperature sensor is connected to Tegra SoC.
Add interrupt property to the temperature sensor for completeness.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The ACTMON module monitors activity of memory clients and then devfreq
driver makes decisions about a required memory frequency based on info
from ACTMON. Add ACTMON device to the thermal zone of Nexus 7 in order
to use it as a cooling device which throttles memory freq on overheat.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The bq27541 Linux kernel driver will try to reprogram controller based
on the values from monitored-battery node, but it fails to do so because
controller was locked by manufacturer. Still this is a very undesirable
behaviour, hence let's remove the optional battery node.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Remove unused thermal zone just to clean up device-tree and set critical
temperature further apart from the passive cooling trip point since
during or thermal testing of Asus Transformer devices we found that CPU
could reach the critical temperature in a certain kernel configurations
for a brief moment if critical trip point is set close to the passive
trip point and then device will be immediately shut off without getting
a chance to cool down using passive cooling.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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If CPU0 is unplugged the cooling device can not rebind to CPU1. And if
CPU0 is plugged in again, the cooling device may fail to initialize.
If the CPUs are mapped with the physical CPU0 to Linux numbering
CPU1, the cooling device mapping will fail.
Hence specify all CPU cores as a cooling devices in the device-tree.
Suggested-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Depending on a driver probe order, panel-simple driver may probe first,
which results in this error:
panel-simple display-panel: Reject override mode: panel has a fixed mode
We don't want to use panel-simple anyways because customized timings are
preferred for Nexus 7, hence remove the panel-simple compatibles from the
panel node.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Devicetree schema now requires gpio-hog nodes to have a certain naming
pattern, like a -hog suffix. This patch fixes dtbs_check warnings about
the names.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The lvds-encoder binding now supports power-supply property, let's specify
it in the device-tree for completeness.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The current CPU thermal limit is a bit inappropriate for Nexus 7 once
device is getting used on a daily bases. For example, currently it's may
be impossible to watch a hardware accelerated 720p video without hitting
a severe CPU throttling, which ruins user experience. This patch improves
the thermal throttling thresholds.
In my experience setting CPU thermal threshold to 57C provides the most
reasonable result, where device is a bit warm under constant load and
not getting overly hot, in the same time performance is okay. Let's bump
the passive-cooling threshold from 50C to 57C and also lower the thermal
hysteresis to 0.2C in order to make throttling more reactive.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Rename thermal zones in order fix dt_binding_check warning telling that
names do not match the expected pattern.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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SMB347 is a battery charger controller which is found on the Nexus 7
device.
Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Nexus 7 2012 has Elantech EKTF3624 touchscreen, this patch adds TS node to
the device-tree.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The default parent for all MMCs is PLLP, which is running at 408 MHz on
Tegra30 and 50 MHz clock can't be derived from PLLP. The maximum SDIO
clock rate is 50 MHz, but this rate isn't achievable using PLLP.
Let's switch the WiFi MMC clock parent to PLLC in order to get true 50
MHz. This patch doesn't fix any problems, it's just a minor improvement.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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MMC core now supports binding to a specific ID, which is very handy for
embedded devices, like Nexus 7, because MMC ID may change depending on
kernel version or configuration which affects MMC driver probe order.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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There are few hardware variants of NVIDIA Tegra30-based Nexus 7 device:
1. WiFi-only (named Grouper)
2. GSM (named Tilapia)
3. Using Maxim PMIC (E1565 board ID)
4. Using Ti PMIC (PM269 board ID)
This patch adds device-trees for known and tested variants.
Link: https://wiki.postmarketos.org/wiki/Google_Nexus_7_2012_(asus-grouper)
Tested-by: Pedro Ângelo <pangelo@void.io>
Tested-by: Matt Merhar <mattmerhar@protonmail.com>
Tested-by: Zack Pearsall <zpearsall@yahoo.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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