Commit graph

55006 commits

Author SHA1 Message Date
Simon Glass
bcea0e1e81 rockchip: Add a sound driver
Add a sound driver for rk3288 supporting chromebook_jerry. This uses the
I2S driver, and existing audio codec and the clock/pinmux support.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2019-02-01 16:59:10 +01:00
Simon Glass
2665f09115 rockchip: Add an I2S driver
Add a driver for I2S which allows audio data to be sent from the SoC to
the audio codec. The sample rate and other settings are hard-coded for now
as there is no suitable device-tree binding available.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2019-02-01 16:59:10 +01:00
Simon Glass
3dbfe5ae61 rockchip: rk3288: Add i2s pinctrl and clock support
Add support for setting pinctrl and clock for I2S on rk3288. This allows
the sound driver to operate. These settings were created by rkmux.py

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2019-02-01 16:59:10 +01:00
Jean-Jacques Hiblot
341e5a2752 ARM: DTS: am43xx: Enable the DTS entries for USB port #2 in SPL
This is required to enable the USB port #2 in SPL when DM_USB is used.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-02-01 09:14:21 -05:00
Jean-Jacques Hiblot
64c59926ad ARM: DTS: am43xx: Add aliases for the USB ports
Although not required, it doesn't hurt to explicitly map the USB ports to
a USB controller. Without this, the port number will be derived from the
binding order of the peripheral devices.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-02-01 09:14:21 -05:00
Adam Ford
dd5b0e229b ARM: DTS: Resync am3517-evm.dts with Linux 5.0-rc3
The chosen node was added in the kernel.  This may come in handy
in the future, so resync with 5.0-rc3

Signed-off-by: Adam Ford <aford173@gmail.com>
2019-02-01 09:14:21 -05:00
Adam Ford
13756ebb98 ARM: dts: da850-evm: Re-sync with Kernel 5.0
Resync with Kernel 5.0-rc3

Signed-off-by: Adam Ford <aford173@gmail.com>
2019-02-01 09:14:21 -05:00
Adam Ford
c97ae7be80 ARM: am3517_evm: Enable DM_SPI and DM_USB
To comply with pending requirements, this sets the flags to
enable DM_SPI and DM_USB.

Signed-off-by: Adam Ford <aford173@gmail.com>
2019-02-01 09:14:21 -05:00
Tien Fong Chee
cafc429fa8 spl: fat/fs: Add control to build FS EXT4 in SPL
CONFIG_SPL_FS_EXT4 can be used to include/exclude the FS EXT4 from
SPL build. Excluding the FS EXT4 from SPL build can help to save 20KiB
memory.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-01 09:14:21 -05:00
Tien Fong Chee
f4b4092474 spl: Kconfig: Replace CONFIG_SPL_EXT_SUPPORT to CONFIG_SPL_FS_EXT4
Replace CONFIG_SPL_EXT_SUPPORT to CONFIG_SPLY_FS_EXT4 so both
obj-$(CONFIG_$(SPL_)FS_EXT4) and CONFIG_IS_ENABLED(FS_EXT4) can be
used to control the build in both SPL and U-Boot.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-01 09:14:21 -05:00
Tien Fong Chee
d8c3ea9982 spl: fat/fs: Add option to include/exclude FAT write build in SPL
Most of the time SPL only needs very simple FAT reading, so having
CONFIG_IS_ENABLED(FAT_WRITE) to exclude it from SPL build would help
to save 64KiB default max clustersize from memory.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-01 09:12:48 -05:00
Tien Fong Chee
0c3a9ed409 spl: Kconfig: Replace CONFIG_SPL_FAT_SUPPORT with CONFIG_SPL_FS_FAT
Replace CONFIG_SPL_FAT_SUPPORT with CONFIG_SPL_FS_FAT so
obj-$(CONFIG_$(SPL_)FS_FAT) can be used to control the build in both
SPL and U-Boot.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-01 09:12:48 -05:00
Jean-Jacques Hiblot
0e036484db configs: removing am335x_evm_usbspl_defconfig
This feature is now supported by the main config for am335x_evm:
am335x_evm_defconfig

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-01 09:09:40 -05:00
Jean-Jacques Hiblot
94f0d13c9b configs: am335x_evm: enable DM_USB_GADGET and USB_ETHER in u-boot and SPL
The AM335x ROM boot is able to download the SPL from a RNDIS connection
on USB0. To enable a full RNDIS boot flow (romboot -> SPL -> u-boot -> ..),
we can use USB_ETHER in SPL and u-boot.
However this increase the size of the SPL past its limit. So removing the
unused SPL_EXT_SUPPORT.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-01 09:09:40 -05:00
Jean-Jacques Hiblot
db34e0ede0 ARM: DTS: am335x-evm: Use USB0 in peripheral mode
This USB port is mainly used for RNDIS and DFU. To be able to use it with
DM_USB and DM_USB_GADGET, we need to provide a dr_mode value in the DTS.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-01 09:09:40 -05:00
Jean-Jacques Hiblot
1c1464c2b1 usb: ether: call _usb_eth_halt() if initialization fails
If the host does not respond in time, the initialization fails. However
the usb ether driver will still be registered. This will make
usb_gadget_probe_driver() fail the next time the initialization is
attempted because it cannot find an available UDC.

Fixing this by calling _usb_eth_halt() when the init fails.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Acked-by: Lukasz Majewski <lukma@denx.de>
2019-02-01 09:09:40 -05:00
Heiko Schocher
a36c70a36d am335x, shc: adapt shc board to DM
port the am335x based shc board to DM, to get rid
of DW warnings when compiling U-Boot.

- remove uneccessary board code
- adapt defconfigs
- remove unneeded defconfigs
  configs/am335x_shc_prompt_defconfig
  configs/am335x_shc_sdboot_prompt_defconfig

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-01 09:09:40 -05:00
Heiko Schocher
46c43714a9 ARM: dts: am335x-shc: add u-boot specific dtsi
add u-boot specific am335x-shc-u-boot.dtsi file,
in which we add u-boot specific adaptions.

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-02-01 09:09:40 -05:00
Heiko Schocher
e535014580 arm: dts: add am335x-shc.dts for shc board
add DTS from linux tree commit
"47bfa6d9dc8c060bf56554a465c9031e286d2f80"

change for U-Boot:
switch to SPDX-license identifier.

Signed-off-by: Heiko Schocher <hs@denx.de>
2019-02-01 09:09:40 -05:00
Horatiu Vultur
364e407f3c configs: mscc_luton: Add network support.
Update default config to use network driver for Luton SoCs.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:13:36 +01:00
Horatiu Vultur
c5620aeea4 net: Add MSCC Luton networkd driver.
Add network driver for Microsemi Ethernet switch, it is
present on Luton SoCs.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:13:36 +01:00
Horatiu Vultur
ee7b65f2cc mips: mscc: luton: Add ethernet nodes for Luton.
Add nodes for pcb090 and pcb091. There is currently no support
in Linux for this SoC.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:13:36 +01:00
Horatiu Vultur
0b8f34dc8c net: mscc: Remove unused variables
Remove unused variables in the struct ocelot_private and make
miim variable static.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:13:36 +01:00
Horatiu Vultur
45f2748c50 net: mscc: Move mac_table_add function into different file.
Move the function mac_table_add into a different file,
so it can be reused.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:13:36 +01:00
Horatiu Vultur
36d04f52ff net: mscc: Move ocelot_send and ocelot_recv in a different file.
This functions can be reused by other MSCC SoCs therefore,
make them more generic and move them in separate files.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:13:36 +01:00
Horatiu Vultur
2fff4a9b59 net: mscc: Move miim commands into separate file.
Move miim functions that can be shared in a different file inside
mscc_eswitch.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:13:36 +01:00
Horatiu Vultur
4c66157f42 net: mscc: Move ocelot_switch to mscc_eswitch folder
Move file ocelot_switch to mscc_eswitch to prepare to add
new net drivers for other MSCC SoCs.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:13:36 +01:00
Stefan Roese
fdceb0d735 mips: mt76xx: Use correct timer frequency
Testing has shown that the timer on the MT7688 platforms does not run
correctly (too fast timeout). This patch changes
CONFIG_SYS_MIPS_TIMER_FREQ from 200MHz to 290MHz which is the correct
value, as its also used in Linux.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2019-02-01 14:12:36 +01:00
Horatiu Vultur
78b5431410 MSCC: Fix Jaguar2 board detection.
When power cycle the Jaguar2 boards, it couldn't read the
phys, therefore it always deduce that the board type is
pcb111.

Add a small delay after setting the gpio pins, fix the
issue.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:09:31 +01:00
Horatiu Vultur
45988b123c MSCC: Jaguar2 enable debug uart
Enable debug uart for Jaguar2 SoC family.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
2019-02-01 14:08:54 +01:00
Tom Rini
db4a29993d - ihs and imx driver fixes
- relax EDID validation checks for 0 hsync/vsync
   pulse width (support some quirky displays)
 -----BEGIN PGP SIGNATURE-----
 
 iGwEABECACwWIQSC4hxrSoIUVfFO0kRM6ATMmsalXAUCXFLpkQ4cYWd1c3RAZGVu
 eC5kZQAKCRBM6ATMmsalXLiRAJ9F4WRPFtzn/S77OinRZl2e5isCJACaA/t8hmx2
 M81piE8xdryxVKIHFJc=
 =ocAC
 -----END PGP SIGNATURE-----

Merge tag 'video-updates-for-2019.04-rc1' of git://git.denx.de/u-boot-video

- ihs and imx driver fixes
- relax EDID validation checks for 0 hsync/vsync
  pulse width (support some quirky displays)
2019-01-31 16:07:37 -05:00
Tom Rini
ab0ec15f77 - Add features and fixups to support video on Amlogic GX SoCs
- Add video support for Amlogic GX SoC
 - Add DT fixups
 - Enable Video and USB Console for libretech-cc board
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJcUrPBAAoJEHfc29rIyEnRtJ8QAI2YFvozhCwdNhZg1Z1jRS2j
 5gkEW4HjwD7p4BXWYNmymDybWUtax21vXy/Q7zJHnOYuYeVwH7Tw2H0kAwVnMjja
 RXewtvaeb4sd2OWm7v9PoiUrg2+xwC9YqNCPMkEAE7EMo95Lpx11NwuvHVJqbsTG
 Qo46P5KBwOsnzg3/WAGth8/IBrFvsdJAoa7WtRRgF/THYhu1PtkzX8Cu1DHgQQMt
 UiDaoTaarCMiVP0g6dVnPJB/IrW9D9lEU9sx2C0J/yU2ikLdbX5TPPjMlqVznn8D
 hO+kqfkiGAlXiPwDEc4UskqRHTvivaL8wLGdtYyXkp0eRgxipAyDdO9oGUjkN8+e
 f1B/hQMipMnSpehYqB13XJYtjGqR8JdKNaN/BptH26YYS44iuHiTJs9XsXqyKTRU
 X9rnDSrWiaREL6ChrP0KMXzbP47KUBHA5OPsTv0YHLkcuoRMovqu2OgiK13GNQqf
 Q2RaQqBiz+sfNIsx7OKaFIr2TMpSUbe+WxEne0s+C1XrD0/V86iN32jnmioxLdEo
 qFMkKZWXHv7pfwVaMK91wAZFasnWjg5VqkEXFS4ti+SIxfkpgsg+nLHMQpw48M4e
 KfmBW5tsIiN3gfXI+ZfCEWdU2dkd9u5B+QKzLC8dimxEziZYkGk0CXN0N4lBp4on
 AItt+R8BbrBsvcp3r1WY
 =MWXC
 -----END PGP SIGNATURE-----

Merge tag 'u-boot-amlogic-20190131' of git://git.denx.de/u-boot-amlogic

- Add features and fixups to support video on Amlogic GX SoCs
- Add video support for Amlogic GX SoC
- Add DT fixups
- Enable Video and USB Console for libretech-cc board
2019-01-31 07:19:52 -05:00
Maxime Jourdan
fce1069bfb arm: libretech-cc: enable video by default
libretech-cc being the main device tested with CONFIG_VIDEO_MESON, let's
enable it by default.

Also enable:
 - CONFIG_SYS_WHITE_ON_BLACK for prettiness
 - CONFIG_VIDEO_DT_SIMPLEFB for framebuffer sharing with kernel

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2019-01-31 09:35:01 +01:00
Maxime Jourdan
01790b016e arm: meson64: enable console mux and console env by default
With the recent addition of the meson VPU driver, enable the following
config entries by default for meson-64 targets: CONFIG_CONSOLE_MUX,
CONFIG_SYS_CONSOLE_IS_IN_ENV.

This allows outputting the console via video if CONFIG_VIDEO_MESON is
selected.

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2019-01-31 09:35:01 +01:00
Neil Armstrong
f0d090442b configs: meson64: use vidconsole and usbkbd if enabled
Allows displaying the console via video and using a USB keyboard.

Also enables CONFIG_SPLASH_SCREEN if using video.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2019-01-31 09:35:01 +01:00
Maxime Jourdan
0cc53faf59 arm: meson: board-gx: Setup VPU in fdt
If VIDEO_MESON is enabled, we need to setup the fdt for the framebuffer.

Call meson_vpu_rsv_fb() which reserves the framebuffer memory region for
EFI, and sets up simple-framebuffer nodes if simplefb support is
enabled.

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2019-01-31 09:35:01 +01:00
Maxime Jourdan
2ebade0d57 arm64: dts: meson-gx: add hhi reg entry to hdmi_tx
There's no reliable way to reuse the hhi entry from the vpu as is done
in the linux kernel, so we duplicate it here.

We will be able to sync against kernel DTS in the future when the VPU
gets based on the clock framework rather than the HHI reg.

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-01-31 09:35:01 +01:00
Neil Armstrong
bce59f918e arm64: dts: meson-gx: Add hdmi_5v regulator as hdmi tx supply
The hdmi_5v regulator must be enabled to provide power to the physical HDMI
PHY and enables the HDMI 5V presence loopback for the monitor.

Fixes: b409f625a6d5 ("ARM64: dts: meson-gx: Add HDMI_5V regulator on selected boards")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
[backport of linux commit e1f2163deac059ad39f07aba9e314ebe605d5a7a]
2019-01-31 09:35:01 +01:00
Maxime Jourdan
671b1db8f8 arm64: dts: meson-gx: vpu should be probed before relocation
Flag the appropriate nodes with u-boot,dm-pre-reloc

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-01-31 09:35:01 +01:00
Neil Armstrong
3bed422094 video: Add Meson Video Processing Unit Driver
This adds video output support for Amlogic GXBB/GXL/GXM chips.
The supported ports are CVBS and HDMI (based on DW_HDMI).

When using HDMI, only DMT modes are supported.

There is support for simple-framebuffer (CONFIG_VIDEO_DT_SIMPLEFB)

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jorge Ramire-Ortiz <jramirez@baylibre.com>
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
[narmstrong: fixed defines alignment in meson_canvas.c]
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2019-01-31 09:35:01 +01:00
Jorge Ramirez-Ortiz
56dd8d87e5 video: dw_hdmi: add support for color conversion
Some IPs like the meson VPU can only feed a particular pixel format to
dw_hdmi. As of now, the driver is hardcoded to use RGB888 as input.

This commit enables different pixel format inputs, with the appropriate
CSC configuration.

Signed-off-by: Jorge Ramire-Ortiz <jramirez@baylibre.com>
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2019-01-31 09:35:01 +01:00
Jorge Ramirez-Ortiz
fd99841808 video: dw_hdmi: support SoC specific read/write ops
Some IPs like the meson VPU have a specific way to write to dw_hdmi
registers. Make it configurable.

Signed-off-by: Jorge Ramirez-Ortiz <jramirez@baylibre.com>
[added commit description]
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2019-01-31 09:35:01 +01:00
Maxime Jourdan
335d287327 power: domain: meson-gx-pwrc-vpu: add missing depends
MESON_GX_VPU_POWER_DOMAIN should depend on POWER_DOMAIN.

Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2019-01-31 09:35:01 +01:00
Neil Armstrong
535d74a8ae MAINTAINERS: Add Amlogic entry
Add entry for Amlogic SoC maintained files and the freshly
created mailing-list.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-01-30 21:22:53 -05:00
Heinrich Schuchardt
1249fa8fc2 Makefile: remove generated font files
If `make mrproper` does not delete the generated drivers/video/fonts/*.S
files a following `make tests` fails.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-01-30 21:22:53 -05:00
Simon Goldschmidt
1f92c074cb dfu: mmc: call fs functions instead of run_command
This unbreaks dfu mmc_file_op which is currently broken since using the
load cmd on a buffer from heap is not allowed - added with
commit aa3c609e2b ("fs: prevent overwriting reserved memory")

Fixes: commit aa3c609e2b ("fs: prevent overwriting reserved memory")
Reported-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Lukasz Majewski <lukma@denx.de>
2019-01-30 21:22:53 -05:00
Tom Rini
552452f80c Merge branch 'master' of git://git.denx.de/u-boot-sunxi
- Enable DM_MMC support
2019-01-30 12:24:32 -05:00
Jagan Teki
a7cca57937 arm: sunxi: Enable DM_MMC
Enable DM_MMC for all Allwinner SoCs, this will eventually
enable BLK.

Also removed DM_MMC enablement in few parts of sunxi
configurations.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2019-01-30 18:22:18 +05:30
Jagan Teki
cebeba9fdf sunxi: A64: pinebook-u-boot: Include sunxi-u-boot.dtsi
Like other Allwinner A64 boards, pinebook also need altering
auto-numbering of mmc2 to mmc1 which is available in common
sunxi dsti file, sunxi-u-boot.dtsi

Pinebook has a separate sun50i-a64-pinebook-u-boot.dtsi which
takes more precedence for u-boot.dtsi inclusion and it eventually
failed to include the sunxi-u-boot.dtsi.

So, this patch add support to include the sunxi-u-boot.dtsi in the
sun50i-a64-pinebook-u-boot.dtsi

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com> # Pinebook
2019-01-30 18:22:18 +05:30
Jagan Teki
708b5da38a arm: dts: sunxi: Alter mmc2 auto-numbering to mmc1
Environment and fastboot mmc devices are configured based on the number
of mmc slots defined on particular board configs, MMC_SUNXI_SLOT_EXTRA.

If MMC_SUNXI_SLOT_EXTRA is more than 1, the default env and fastboot
mmc devices is mmc1 by assuming mmc0 is SD and mmc1 is emmc device.

But with DM_MMC the mmc devices are numbered as per the dts node
enablement. If there is a chance of having enabling all mmc nodes
in dts say mmc0, mmc1, mmc2 then the default env and fastboot devices
will failed to assign proper emmc device since mmc2 is emmc in most
of the Allwinner platforms.

So, we need to alter the auto-numbering by aliasing mmc2 to mmc1 since
aliases take precedence over auto-numbering.

If the dts enables mmc0, mmc1, mmc2, then all the nodes will probe
sequentially and auto-numbered as it is. but when aliases mmc1 with mmc2
the resulting number should be that mmc0 is till mmc0, mmc2 become mmc1
and mmc2 become mmc1

Without aliases of mmc1 = &mmc2;
-------------------------------
MMC:   mmc@1c0f000: 0, mmc@1c10000: 1, mmc@1c11000: 2

With aliases of mmc1 = &mmc2;
----------------------------
MMC:   Device 'mmc@1c11000': seq 1 is in use by 'mmc@1c10000'
mmc@1c0f000: 0, mmc@1c10000: 2, mmc@1c11000: 1
Loading Environment from FAT... OK

Some platforms like A20 has mmc0...mmc3, but there is no usecases now
for enabling all mmc controllers in any of A20 board dts files.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2019-01-30 18:22:18 +05:30