Merge changes I7bd311d7,Iea7dcfe3,I9d890934 into integration

* changes:
refactor(allwinner): use fdt_node_is_enabled() in AXP driver
fix(allwinner): check RSB availability in DT on H6
refactor

Merge changes I7bd311d7,Iea7dcfe3,I9d890934 into integration

* changes:
refactor(allwinner): use fdt_node_is_enabled() in AXP driver
fix(allwinner): check RSB availability in DT on H6
refactor(fdt): introduce common fdt_node_is_enabled()

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refactor(allwinner): use fdt_node_is_enabled() in AXP driver

The Allwinner AXP driver was using a private implementation of that
function, remove that in favour of our now common implementation.

Ch

refactor(allwinner): use fdt_node_is_enabled() in AXP driver

The Allwinner AXP driver was using a private implementation of that
function, remove that in favour of our now common implementation.

Change-Id: I7bd311d73060d4bc83f93cff6bedf6c78dddd3ca
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

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Merge "feat(allwinner): allow to skip PMIC regulator setup" into integration

feat(allwinner): allow to skip PMIC regulator setup

For somewhat historical reasons we are doing some initial PMIC regulator
setup in BL31, as U-Boot does not (yet) have a PMIC driver. This worked
f

feat(allwinner): allow to skip PMIC regulator setup

For somewhat historical reasons we are doing some initial PMIC regulator
setup in BL31, as U-Boot does not (yet) have a PMIC driver. This worked
fine so far, but there is at least one board (OrangePi 3) that gets upset,
because the Ethernet PHY needs some *coordinated* bringup of *two*
regulators.

To avoid custom hacks, let's introduce a build option to keep doing the
regulator setup in TF-A. Defining SUNXI_SETUP_REGULATORS to 0 will break
support for some devices on some boards in U-Boot (Ethernet and HDMI),
but will allow to bring up the OrangePi 3 in Linux correctly. We keep
the default at 1 to not change the behaviour for all other boards.

After U-Boot gained proper PMIC support at some point in the future, we
will probably change the default to 0, to get rid of the less optimal
PMIC code in TF-A.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Change-Id: Ie8e2583d0396f6eeaae8ffe6b6190f27db63e2a7

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Merge "plat/allwinner: do not setup 'disabled' regulators" into integration

plat/allwinner: do not setup 'disabled' regulators

If a PMIC regulator has its DT node disabled, leave the regulator off.

Change-Id: I895f740328e8f11d485829c3a89a9b9f8e5644be
Signed-off-by: Roman B

plat/allwinner: do not setup 'disabled' regulators

If a PMIC regulator has its DT node disabled, leave the regulator off.

Change-Id: I895f740328e8f11d485829c3a89a9b9f8e5644be
Signed-off-by: Roman Beranek <roman.beranek@prusa3d.com>

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Merge changes from topic "aw_drivevbus" into integration

* changes:
plat/allwinner: Only enable DRIVEVBUS if really needed
plat/allwinner: Use common gicv2.mk

plat/allwinner: Only enable DRIVEVBUS if really needed

The DRIVEVBUS power rail of the AXP803 PMIC is mostly used to supply
the USB bus power on micro USB sockets, when used in host mode. As this
is

plat/allwinner: Only enable DRIVEVBUS if really needed

The DRIVEVBUS power rail of the AXP803 PMIC is mostly used to supply
the USB bus power on micro USB sockets, when used in host mode. As this
is a dynamic operation, and mostly we want micro USB sockets to act in
client mode initially, BL31 should not actually enable this power line.
However, on some boards DRIVEVBUS is used to supply power to normal
USB-A sockets. Failing to activate this line there results in
non-functional USB in U-Boot on those boards.

For that reason we were enabling DRIVEVBUS so far, as it did not seem to
cause any harm to the other boards. However it turns out that on the
Pinephone (and other systems with a battery), actually enabling DRIVEVBUS
unconditionally causes serious problems (reboot loop).

To accommodate both use cases, without reverting to a build time option,
check the default OTG configuration in the devicetree. For boards with
USB-A sockets this is set to "host", on boards with micro-B sockets to
"otg". Depending on this setting, we either enable DRIVEVBUS or leave it
alone.

This fixes TF-A on the Pinephone and potentially other battery powered
devices.

Change-Id: Iec0e07f218b2b4393bf4e05c3386261f8ed19e9f
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

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Merge changes from topic "allwinner_pmic" into integration

* changes:
allwinner: h6: power: Switch to using the AXP driver
drivers: allwinner: axp: Add AXP805 support

Merge changes from topic "allwinner_pmic" into integration

* changes:
allwinner: Convert AXP803 regulator setup code into a driver
allwinner: a64: power: Use fdt_for_each_subnode
allwinner: a6

Merge changes from topic "allwinner_pmic" into integration

* changes:
allwinner: Convert AXP803 regulator setup code into a driver
allwinner: a64: power: Use fdt_for_each_subnode
allwinner: a64: power: Remove obsolete register check
allwinner: a64: power: Remove duplicate DT check
allwinner: Build PMIC bus drivers only in BL31
allwinner: a64: power: Make sunxi_turn_off_soc static
allwinner: Merge duplicate code in sunxi_power_down
allwinner: Clean up PMIC-related error handling
allwinner: Synchronize PMIC enumerations
allwinner: Enable clock before resetting I2C/RSB

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allwinner: Convert AXP803 regulator setup code into a driver

Previously, the A64/H5 and H6 platforms' PMIC setup code was entirely
independent. However, some H6 boards also need early regulator setu

allwinner: Convert AXP803 regulator setup code into a driver

Previously, the A64/H5 and H6 platforms' PMIC setup code was entirely
independent. However, some H6 boards also need early regulator setup.

Most of the register interface and all of the device tree traversal code
can be reused between the AXP803 and AXP805. The main difference is the
hardware bus interface, so that part is left to the platforms. The
remainder is moved into a driver.

I factored out the bits that were obviously specific to the AXP803;
additional changes for compatibility with other PMICs can be made as
needed.

The only functional change is that rsb_init() now checks the PMIC's chip
ID register against the expected value. This was already being done in
the H6 version of the code.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: Icdcf9edd6565f78cccc503922405129ac27e08a2

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drivers: allwinner: axp: Add AXP805 support

This adds the new regulator list, as well as changes to make the switch
(equivalent to DC1SW on the AXP803) work on both PMICs.

Signed-off-by: Samuel Hol

drivers: allwinner: axp: Add AXP805 support

This adds the new regulator list, as well as changes to make the switch
(equivalent to DC1SW on the AXP803) work on both PMICs.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I9a1eac8ddfc54b27096c10a8eebdd51aaf9b8311

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