Commit graph

58393 commits

Author SHA1 Message Date
Andreas Dannenberg
5eb19e0516 configs: am65x_hs_evm: Add support for applying overlays
This will allow for downloading and applying overlays from an MMC/SD
boot media based on the overlay_files ENV variable containing a list
of overlay files.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
623df9cc03 configs: am65x_evm: Add support for applying overlays
This will allow for downloading and applying overlays from an MMC/SD
boot media based on the overlay_files ENV variable containing a list
of overlay files.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
03facc7271 board: ti: am654: Use EEPROM-based board detection
The TI AM654x EVM base board and the associated daughtercards have on-
board I2C-based EEPROMs containing board configuration data. Use the
board detection infrastructure introduced earlier to do the following:

1) Parse the AM654x EVM base board EEPROM and populate items like board
   name and MAC addresses into the TI common EEPROM data structure
   residing in SRAM scratch space
2) Check for presence of daughter card(s) by probing the associated
   presence signals via an I2C-based GPIO expander. Then, if such a
   card is found, parse the data such as additional Ethernet MAC
   addresses from its on-board EEPROM and populate into U-Boot
   accordingly
3) Dynamically create an U-Boot ENV variable called overlay_files
   containing a list of daugherboard-specific DTB overlays based on
   daughercards found.

This patch adds support for the AM654x base board ("AM6-COMPROCEVM")
as well as for the IDK ("AM6-IDKAPPEVM"), OLDI LCD ("OLDI-LCD1EVM")
PCIe/USB3.0 ("SER-PCIEUSBEVM"), 2 Lane PCIe/USB2.0 ("SER-PCIE2LEVM"),
and general purpuse ("AM6-GPAPPEVM") daughtercards.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
183fa08ae5 ti: common: am6: Add support for setting MAC addresses
The AM654x EVM based on the TI K3 family of SoCs has an updated board
detection EEPROM structure that contains a TLV record of dedicated MAC
addresses rather than a range of MAC addresses as it was used on earlier
platforms such as DRA7. Add a basic function that allows us setting up
Ethernet MAC addresses into the U-Boot environment based on the MAC
address record contained in the common TI EEPROM structure.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
361a53308d ti: common: am6: Add support for board description EEPROM
The AM654x EVM based on the TI K3 family of SoCs have an updated board
detection EEPROM structure, now comprising variable-sized TLV-type
records, containing a superset of what is already being provided on
earlier platforms such as DRA7. Add basic support for parsing the new
data structures contained on the base board into the common TI EEPROM
structure while also providing infrastructure that can be used later on
to parse data from additional EEPROMs such as the ones that are used on
daughtercards for this platform.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
96905a39d3 arm: K3: am654: Map common EEPROM data into SRAM scratch space
The board detection scheme employed on various TI EVMs makes use of
SRAM scratch space to share data read from an on-board EEPROM between
the different bootloading stages. Map the associated definition that's
used to locate this data into the SRAM scratch space we use on AM654x.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
13b569c4b9 configs: am65x_hs_evm_a53: Increase malloc pool before relocation
The malloc pool used before relocation is getting tight leading to
out of memory errors doing certain DM-related calls. Since we are
running the A53 SPL out of DDR let's just go ahead and bump its size
as used in U-Boot proper as well as SPL (via Kconfig default value)
from 8KB to 32KB.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Acked-by: Andrew F. Davis <afd@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
2fcaae62f0 configs: am65x_evm_a53: Increase malloc pool before relocation
The malloc pool used before relocation is getting tight leading to
out of memory errors doing certain DM-related calls. Since we are
running the A53 SPL out of DDR let's just go ahead and bump its size
as used in U-Boot proper as well as SPL (via Kconfig default value)
from 8KB to 32KB.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
8f26b041e0 configs: am65x_hs_evm_a53: Enable PCA953X-type GPIO driver
Enable GPIO driver for PCA953X-compatible I2C-based I/O expander
which includes support for the TCA9554/PCA9554-type expander found
on the AM654 EVM base board.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Acked-by: Andrew F. Davis <afd@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
e5e5c7608a configs: am65x_evm_a53: Enable PCA953X-type GPIO driver
Enable GPIO driver for PCA953X-compatible I2C-based I/O expander
which includes support for the TCA9554/PCA9554-type expander found
on the AM654 EVM base board.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
ba7907c79c arm64: dts: k3-am654-base-board: Add I2C GPIO expander @ 0x38
The AM654 base board has a TCA9554/PCA9554-type GPIO expander on the
wkup_i2c0 bus at address 0x38 that is used to detect the presence of
daughter cards.  Add a respective DTS description of this expander
to enable its use.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
7b6aed5136 configs: am65x_hs_evm_defconfig: Enable I2C support
Enable I2C via driver model as well as the associated set of U-Boot
commands to allow us interacting with various I2C slave devices.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Acked-by: Andrew F. Davis <afd@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
2160ba26f1 configs: am65x_evm_defconfig: Enable I2C support
Enable I2C via driver model as well as the associated set of U-Boot
commands to allow us interacting with various I2C slave devices.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
7e0363b285 arm: dts: k3-am654-base-board: Enable wkup_i2c0 across all boot stages
To enable the use of an EEPROM-based board detection scheme we need to
be able to access the I2C bus associated with the EEPROMs across all
3 stages of U-Boot: R5 SPL, A53 SPL, and A53 U-Boot (proper). So go
ahead and add/update the wkup_i2c0 peripheral module DTS definitions
and its associated pinmux node accordingly.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:13:18 -04:00
Andreas Dannenberg
bbe59169ee arm: dts: k3-am65: Add I2C nodes
Add I2C DT nodes

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
9bbdfdf209 arm: dts: k3-am65: Move pinctrl nodes out of U-Boot specific dtsi
Only U-Boot specifc DT properties or overrides, must be in -u-boot.dtsi.
Pinctrl nodes does not belong here. Now that pinctrl nodes are in kernel
DT, there is no reason to be keep these in -u-boot.dtsi. Move them to
proper places so that it would ease copying DT entries from kernel DT.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:12:54 -04:00
Vignesh R
4fd4c898f0 arm: omap_i2c: Remove unwanted header file inclusion
There is no need for to include this header here, so drop it.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:12:54 -04:00
Vignesh R
14106bcadb i2c: omap24xx_i2c: Adapt driver to support K3 devices
K3 devices have I2C IP that is same as OMAP2+ family. Allow driver to be
compiled for ARCH_K3.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:12:54 -04:00
Faiz Abbas
b5d2e2980b am65x: README: Add eMMC layout and flash instructions
Add instructions for flashing boot images to the eMMC with a
layout of the address where each image needs to be flashed.

Also add instructions to flash filesystem partition in user
partition and boot kernel from the rootfs.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
1bc54fc0af configs: am65x_hs_evm: Add Support for eMMC boot
Add configs to support RAW boot mode in eMMC.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
2019-07-17 11:12:54 -04:00
Faiz Abbas
0e9135c8ce configs: am65x_evm: Add Support for eMMC boot
Add configs to support RAW boot mode in eMMC.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
64c1c3a485 configs: am65x_hs_evm_r5: All sysfw to be loaded via MMC
Enable all the relevant configs that enables support for loading
sysfw via MMC.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
208ec9fb8e configs: am65x_evm_r5: All sysfw to be loaded via MMC
Enable all the relevant configs that enables support for loading
sysfw via MMC.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
c222e3d927 armV7R: K3: am654: Load SYSFW binary and config from boot media
Use the System Firmware (SYSFW) loader framework to load and start
the SYSFW as part of the AM654 early initialization sequence. While
at it also initialize the WKUP_UART0 pinmux as it is used by SYSFW
to print diagnostic messages.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
b3b1ed4bca armv7R: K3: am654: Use full malloc implementation in SPL
Switch to using the full malloc scheme in post-relocation SPL to allow
better utilization of available memory for example by allowing memory
to get freed. Initially allocate a 16MB-sized region in DDR starting
at address 0x84000000 for this purpose.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
0c45dfadec armV7R: K3: am654: Allow using SPL BSS pre-relocation
In order to be able to use more advanced driver functionality which often
relies on having BSS initialized during early boot prior to relocation
several things need to be in place:

1) Memory needs to be available for BSS to use. For this, we locate BSS
   at the top of the MCU SRAM area, with the stack starting right below
   it,
2) We need to move the initialization of BSS prior to entering
   board_init_f(). We will do this with a separate commit by turning on
   the respective CONFIG option.

In this commit we also clean up the assignment of the initial SP address
as part of the refactoring, taking into account the pre-decrement post-
increment nature in which the SP is used on ARM.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
6df8706dc2 arm: K3: Introduce System Firmware loader framework
Introduce a framework that allows loading the System Firmware (SYSFW)
binary as well as the associated configuration data from an image tree
blob named "sysfw.itb" from an FS-based MMC boot media or from an MMC
RAW mode partition or sector.

To simplify the handling of and loading from the different boot media
we tap into the existing U-Boot SPL framework usually used for loading
U-Boot by building on an earlier commit that exposes some of that
functionality.

Note that this initial implementation only supports FS and RAW-based
eMMC/SD card boot.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
e1eb6ada4e spl: Make image loader infrastructure more universal
The current U-Boot SPL image loader infrastructure is very powerful,
able to initialize and load from a variety of boot media however it
is strongly geared towards loading specific types of images in a very
specific way. To address the need being able to use this infrastructure
to load arbitrary image files go ahead and refactor it as follows:

- Refactor existing spl_mmc_load_image function into superset function,
  accepting additional arguments such as filenames and media load offset
  (same concept can also be applied toother spl_XXX_load_image functions)
- Extend the loader function to "remember" their peripheral initialization
  status so that the init is only done once during the boot process,
- Extend the FIT image loading function to allow skipping the parsing/
  processing of the FIT contents (so that this can be done separately
  in a more customized fashion)
- Populate the SPL_LOAD_IMAGE_METHOD() list with a trampoline function,
  invoking the newly refactored superset functions in a way to maintain
  compatibility with the existing behavior

This refactoring initially covers MMC/SD card loading (RAW and FS-based).

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
a5a5d997b4 spl: Allow performing BSS init early before board_init_f()
On some platform we have sufficient memory available early on to allow
setting up and using a basic BSS prior to entering board_init_f(). Doing
so can for example be used to carry state over to board_init_r() without
having to resort to extending U-Boot's global data structure.

To support such scenarios add a Kconfig option called CONFIG_SPL_EARLY_BSS
to allow moving the initialization of BSS prior to entering board_init_f(),
if enabled. Note that using this option usually should go along with using
CONFIG_SPL_SEPARATE_BSS and configuring BSS to be located in memory
actually available prior to board_init_f().

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
2019-07-17 11:12:54 -04:00
Andreas Dannenberg
70942db4dd mmc: am654_sdhci: Allow driver to probe without PDs specified
We would like to use the driver even without power domains being
specified for cases such as during early boot when the required power
domains have already gotten enabled by the SoC's boot ROM and such
explicit initialization is not needed and possible.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:54 -04:00
Faiz Abbas
c7d7e556f2 configs: am65x_evm_a53: Add Support for creating GPT partitions
Add Support for creating GPT partitions in U-boot.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-07-17 11:12:54 -04:00
Faiz Abbas
6c42a756a3 am65x_evm: Add Support for creating a filesystem GPT partition in eMMC
Add Support for creating a GPT partition for the filesystem in eMMC.
The filesystem is created in the user partition (partition 0).

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-07-17 11:12:54 -04:00
Faiz Abbas
c36331ad2d configs: am65x: Add configs to support environment in eMMC
Add configs such that U-boot environment is in eMMC by default.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-07-17 11:12:54 -04:00
Faiz Abbas
f605807f3d mmc: am654_sdhci: Add a platform specific set_control_reg() callback
Add a platform specific set_control_reg() callback to help switch to
UHS speed modes.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
d1c0a2200a mmc: sdhci: Add support for HOST_CONTROL2 and setting UHS timings
The HOST_CONTROL2 register is a part of SDHC v3.00 and not just specific
to arasan/zynq controllers. Add the same to sdhci.h.

Also create a common API to set UHS timings in HOST_CONTROL2.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
5a6098fff0 configs: am65x_evm: Enable CONFIG_REGMAP
Add Support for CONFIG_REGMAP.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
ce142ff0c5 mmc: am654_sdhci: Add Support for PHY
Add support in the driver for handling phy specific registers.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
a8185c50d3 mmc: sdhci: Make set_ios_post() return int
Make set_ios_post() return int to faciliate error handling in
platform drivers.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
bbcfaad59f arm: dts: k3: Add phy specific properties to SD card node
With changes in the driver requiring phy related properties,
add the same for the SD card node to prevent breaking boot with
the driver update.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
3966c7d006 mmc: sdhci: Make sdhci_set_clock() non static
The am654_sdhci driver needs to switch the clock off
before disabling its phy dll and needs to re-enable
the clock before enabling the phy again.

Therefore, make the sdhci_set_clock() function accessible
in the am654_sdhci driver.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
3d296365e4 mmc: sdhci: Add support for sdhci-caps-mask
Add Support for masking some bits in the capabilities
register of a host controller.

Also remove the redundant readl() into caps1.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
55a1a09b2a regmap: Add API regmap_init_mem_index()
In device nodes with more than one entry in the reg property,
it is sometimes useful to regmap only of the entries. Add an
API regmap_init_mem_index() to facilitate this.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
6fca7fb3a0 mmc: am654_sdhci: Remove quirks
The host controller works perfectly well without having to add any
quirks. Remove them.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Faiz Abbas
3a1a0dfc39 arm64: dts: k3: Sync sdhci0 node from kernel and change driver name
Sync the sdhci0 node from kernel. This changes the compatible that is
required to be there in the driver. Change the same for the SD card node
which is not yet supported in kernel. This also syncs the main_pmx0 node
as a side effect.

Also change the name of the driver to match the compatible in kernel.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-07-17 11:12:08 -04:00
Tom Rini
0e80dda32c Merge branch 'master' of https://gitlab.denx.de/u-boot/custodians/u-boot-sunxi
- Beelink-x2 STB support (Marcus)
- H6 DDR3, LPDDR3 changes (Andre, Jernej)
- H6 pin controller, USB PHY (Andre)
2019-07-16 11:19:31 -04:00
Andre Przywara
f96238e253 sunxi: H6: Enable USB for existing boards
So far USB was not enabled for the Allwinner H6 boards, as the PHY
driver was not ready and the clock gates were missing. Since this is now
fixed, let's add the PHY and the OHCI/EHCI drivers to the build, for
all existing H6 boards.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30
Andre Przywara
35fa673e0e sunxi: phy: Add USB PHY support for Allwinner H6
The USB PHY used in the Allwinner H6 SoC has some pecularities (as usual),
which require a small addition to the USB PHY driver:
In this case the second PHY is PHY3, not PHY1, so we need to skip number
1 and 2 in the code. Just use the respective code from Linux for that.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30
Andre Przywara
106c1300a5 sunxi: clocks: Add H6 USB clock gates and resets
To enable USB support in U-Boot, add the required clock and reset gates
to the H6 clock driver. Once enabled, the generic EHCI/OCHI drivers will
pick them up from there automatically.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30
Andre Przywara
0d3c77f5c3 sunxi: gpio: Enable support for H6 pin controller
The Allwinner H6 pin controller is not really special, at least not when
it comes to normal GPIO operation.

Add the H6 compatible strings to the list of recognised strings, to make
GPIOs work for H6 boards.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30
Andre Przywara
10cfbaabc1 sunxi: move SUNXI_GPIO to Kconfig
Probably for no particular reason SUNXI_GPIO was still defined the "old
way", in header files only.

Introduce SUNXI_GPIO to the Kconfig file in drivers/gpio to remove
another line from our dreadful config_whitelist.txt.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2019-07-16 17:13:15 +05:30