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 changes I0c5f32e8,Id49c124c,Idcfe933d into integration

* changes:
allwinner: Use RSB for the PMIC connection on H6
allwinner: Return the PMIC to I2C mode after use
allwinner: Always use

Merge changes I0c5f32e8,Id49c124c,Idcfe933d into integration

* changes:
allwinner: Use RSB for the PMIC connection on H6
allwinner: Return the PMIC to I2C mode after use
allwinner: Always use a 3MHz RSB bus clock

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allwinner: Return the PMIC to I2C mode after use

This gives the rich OS the flexibility to choose between I2C and RSB
communication. Since a runtime address can only be assigned once after
entering

allwinner: Return the PMIC to I2C mode after use

This gives the rich OS the flexibility to choose between I2C and RSB
communication. Since a runtime address can only be assigned once after
entering RSB mode, it also lets the rich OS choose any runtime address.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: Id49c124c5e925985fc31c0ba38c7fb6c941aafa8

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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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