arm64: dts: qcom: msm8916-acer-a1-724: Add notification LED

Acer Iconia Talk S A1-724 uses KTD2026 LED driver. However, there is
no blue LED on it. Add it to the device tree.

Signed-off-by: Raymond Hackley <raymondhackley@protonmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231017125848.84311-1-raymondhackley@protonmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

arm64: dts: qcom: msm8916/39: Disable unneeded firmware reservations

Now that we no longer have fixed addresses for the firmware memory
regions, disable them by default and only enable them together with
the actual user in the board DT.

This frees up unnecessary reserved memory for boards that do not use
some of the remoteprocs and allows moving selected device-specific
properties (such as firmware size) to the board-specific DT part in
the next step.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20230911-msm8916-rmem-v1-7-b7089ec3e3a1@gerhold.net
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

arm64: dts: qcom: msm8916: Disable venus by default

Venus needs firmware that is usually signed with a device-specific key.
There are also devices that might not need it (especially during
bring-up), so let's follow more recent SoCs and disable it by default.

Enable it explicitly for all current devices except msm8916-mtp. That
one has just UART enabled currently so it cannot really benefit from
Venus.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20230911-msm8916-rmem-v1-1-b7089ec3e3a1@gerhold.net
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

arm64: dts: qcom: Replace deprecated extcon-usb-gpio id-gpio/vbus-gpio properties

Use id-gpios and vbus-gpios instead.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Heiko Stuebner <heiko@sntech.de> #rockchip
Link: https://lore.kernel.org/r/20230724103914.1779027-7-alexander.stein@ew.tq-group.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

arm64: dts: qcom: msm8916/39: Consolidate SDC pinctrl

MSM8939 has the SDC pinctrl consolidated in two &sdcN_default and
&sdcN_sleep states, while MSM8916 has all pins separated. Make this
consistent by consolidating them for MSM8916 well.

Use this as a chance to define default pinctrl in the SoC.dtsi and only
let boards that add additional definitions (such as cd-gpios) override it.

For MSM8939 just make the label consistent with the other pinctrl
definitions (they do not have a _state suffix).

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230529-msm8916-pinctrl-v1-2-11f540b51c93@gerhold.net

arm64: dts: qcom: msm8916/39: Fix SD card detect pinctrl

The current SD card detect pinctrl setup configures bias-pull-up for
the "default" (active) case and bias-disable for the "sleep" case.
Before commit b5c833b703cc ("mmc: sdhci-msm: Set IO pins in low power
state during suspend") the pull up was permanently active. Since then
it is only active when a valid SD card is inserted.

This does not really make sense: For an active-low CD, the pull up is
needed to pull the GPIO high when the card is not inserted. When the
card gets inserted CD is shorted to ground (low). This means right now
the pull-up is removed exactly when it is needed to detect the next
card insertion. Generally, applying different bias for CD does not
really make sense. It should always stay the same so card removals and
insertions can be detected properly.

The reason why card detection still works fine in practice is that most
boards seem to have external pull up on the CD pin. However, this means
that there is no need to configure an internal pull-up at all and we
can keep bias-disable permanently.

There are also some boards with different CD polarity (acer-a1-724) and
with different GPIO number (huawei-g7). All in all this makes it
obvious that the CD pin is board-specific and the pinctrl for it should
be defined in the board DT.

Move it to the boards that need it and use bias-disable permanently for
the boards that seem to have external pull-up. The vendor device tree
for msm8939-sony-xperia-kanuti-tulip suggests that it needs the
internal pull-up permanently [1] so it gets bias-pull-up to be sure.

[1]: https://github.com/sonyxperiadev/kernel/blob/57b5050e340f40a88e1ddb8d16fd9adb44418923/arch/arm/boot/dts/qcom/msm8939-kanuti_tulip.dtsi#L634-L636

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230529-msm8916-pinctrl-v1-1-11f540b51c93@gerhold.net

arm64: dts: qcom: msm8916: Move aliases to boards

MSM8939 has the aliases defined separately for each board (because
there could be (theoretically) a board where the slots are numbered
differently. To make MSM8916 and MSM8939 more consistent do the same
for all MSM8916 boards and move aliases there.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230525-msm8916-labels-v1-6-bec0f5fb46fb@gerhold.net

arm64: dts: qcom: msm8916/39: Rename &blsp1_uartN -> &blsp_uartN

For some reason the BLSP UART controllers have a label with a number
behind blsp (&blsp1_uartN) while I2C/SPI are named without (&blsp_i2cN).
This is confusing, especially for proper node ordering in board DTs.

Right now all board DTs are ordered as if the number behind blsp does
not exist (&blsp_i2cN comes before &blsp1_uartN). Strictly speaking
correct ordering would be the other way around ('1' comes before '_').

End this confusion by giving the UART controllers consistent labels.
There is just one BLSP on MSM8916/39 so the number is redundant.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230525-msm8916-labels-v1-2-bec0f5fb46fb@gerhold.net

arm64: dts: qcom: msm8916: Rename &msmgpio -> &tlmm

MSM8916 is the only ARM64 Qualcomm SoC that is still using the old
&msmgpio name. Change this to &tlmm to avoid confusion.

Note that the node ordering does not change because the MSM8916 device
trees have pinctrl separated at the bottom (similar to sc7180).

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230525-msm8916-labels-v1-1-bec0f5fb46fb@gerhold.net

arm64: dts: qcom: msm8916: Define regulator constraints next to usage

Right now each MSM8916 device has a huge block of regulator constraints
with allowed voltages for each regulator. For lack of better
documentation these voltages are often copied as-is from the vendor
device tree, without much extra thought.

Unfortunately, the voltages in the vendor device trees are often
misleading or even wrong, e.g. because:

- There is a large voltage range allowed and the actual voltage is
only set somewhere hidden in some messy vendor driver. This is often
the case for pm8916_{l14,l15,l16} because they have a broad range of
1.8-3.3V by default.

- The voltage is actually wrong but thanks to the voltage constraints
in the RPM firmware it still ends up applying the correct voltage.

To have proper regulator constraints it is important to review them in
context of the usage. The current setup in the MSM8916 device trees
makes this quite hard because each device duplicates the standard
voltages for components of the SoC and mixes those with minor
device-specific additions and dummy voltages for completely unused
regulators.

The actual usage of the regulators for the SoC components is in
msm8916-pm8916.dtsi, so it can and should also define the related
voltage constraints. These are not board-specific but defined in the
APQ8016E/PM8916 Device Specification. The board DT can then focus on
describing the actual board-specific regulators, which makes it much
easier to review and spot potential mistakes there.

Note that this commit does not make any functional change. All used
regulators still have the same regulator constraints as before. Unused
regulators do not have regulator constraints anymore because most of
these were too broad or even entirely wrong. They should be added back
with proper voltage constraints when there is an actual usage.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230510-msm8916-regulators-v1-7-54d4960a05fc@gerhold.net

arm64: dts: qcom: msm8916: Fix regulator constraints

The regulator constraints for most MSM8916 devices (except DB410c) were
originally taken from Qualcomm's msm-3.10 vendor device tree (for lack
of better documentation). Unfortunately it turns out that Qualcomm's
voltages are slightly off as well and do not match the voltage
constraints applied by the RPM firmware.

This means that we sometimes request a specific voltage but the RPM
firmware actually applies a much lower or higher voltage. This is
particularly critical for pm8916_l11 which is used as SD card VMMC
regulator: The SD card can choose a voltage from the current range of
1.8 - 2.95V. If it chooses to run at 1.8V we pretend that this is fine
but the RPM firmware will still silently end up configuring 2.95V.
This can be easily reproduced with a multimeter or by checking the
SPMI hardware registers of the regulator.

Fix this by making the voltages match the actual "specified range" in
the PM8916 Device Specification which is enforced by the RPM firmware.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230510-msm8916-regulators-v1-3-54d4960a05fc@gerhold.net

arm64: dts: qcom: msm8916: Move WCN compatible to boards

On MSM8916 the wireless connectivity functionality (WiFi/Bluetooth) is
split into the digital part inside the SoC and the analog RF part inside
a supplementary WCN36xx chip. For MSM8916, three different options
exist:

- WCN3620 (WLAN 802.11 b/g/n 2.4 GHz + Bluetooth)
- WCN3660B (WLAN 802.11 a/b/g/n 2.4/5 GHz + Bluetooth)
- WCN3680B (WLAN 802.11ac 2.4/5 GHz + Bluetooth)

Choosing one of these is up to the board vendor. This means that the
compatible belongs into the board-specific DT part so people porting
new boards pay attention to set the correct compatible.

Right now msm8916.dtsi sets "qcom,wcn3620" as default compatible,
which does not work at all for boards that have WCN3660B or WCN3680B.

Remove the default compatible from msm8196.dtsi and move it to the board
DT as follows:

- Boards with only &pronto { status = "okay"; } used the default
"qcom,wcn3620" so far. They now set this explicitly for &wcnss_iris.
- Boards with &pronto { ... iris { compatible = "qcom,wcn3660b"; }};
already had an override that just moves to &wcnss_iris now.
- For msm8916-samsung-a2015-common.dtsi the WCN compatible differs for
boards making use of it (a3u: wcn3620, a5u: wcn3660b, e2015: wcn3620)
so the definitions move to the board-specific DT part.

Since this requires touching all the board DTs, use this as a chance to
name the WCNSS-related labels consistently, so everything is grouped
properly when sorted alphabetically.

No functional change, just clean-up for more clarity & easier porting.
Aside from ordering the generated DTBs are identical.

Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230309091452.1011776-1-stephan.gerhold@kernkonzept.com

arm64: dts: qcom: msm8916-acer-a1-724: Add touchscreen

A1-724 uses a Focaltech FT5446 touchscreen that is connected to blsp_i2c5.
Add it to the device tree.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221123033844.149115-1-linmengbo0689@protonmail.com

arm64: dts: qcom: msm8916-acer-a1-724: Add accelerometer/magnetometer

Iconia Talk S uses a Bosch BMC150 accelerometer/magnetometer combo.
The chip provides two separate I2C devices for the accelerometer
and magnetometer that are already supported by the bmc150-accel
and bmc150-magn driver.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221123033830.149061-1-linmengbo0689@protonmail.com

arm64: dts: qcom: msm8916-acer-a1-724: Add initial device tree

Acer Iconia Talk S A1-724 is a tablet using the MSM8916 SoC released
in 2014.

Note: The original firmware from Acer can only boot 32-bit kernels.
To boot arm64 kernels it is necessary to flash 64-bit TZ/HYP firmware
with EDL, e.g. taken from the DragonBoard 410c. This works because Acer
didn't set up (firmware) secure boot.

Add a device tree for with initial support for:

- GPIO keys
- pm8916-vibrator
- SDHCI (internal and external storage)
- USB Device Mode
- UART
- WCNSS (WiFi/BT)
- Regulators

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221123033817.149007-1-linmengbo0689@protonmail.com