diff options
author | Mateusz Kulikowski <mateusz.kulikowski@gmail.com> | 2016-03-31 23:12:33 +0200 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2016-04-01 17:18:27 -0400 |
commit | 626f048bbc1463bc96973822f45d12e4368be951 (patch) | |
tree | 5134b46370410601878b24e1527135562e4bc70a /board/qualcomm/dragonboard410c/readme.txt | |
parent | 085921368b7d1aa30e031cb7b54e5ea707a2155f (diff) |
board: Add Qualcomm Dragonboard 410C support
This commit add support for 96Boards Dragonboard410C.
It is board based on APQ8016 Qualcomm SoC, complying with
96boards specification.
Features (present out of the box):
- 4x Cortex A53 (ARMv8)
- 2x USB Host port
- 1x USB Device port
- 4x LEDs
- 1x HDMI connector
- 1x uSD connector
- 3x buttons (Power, Vol+, Vol-/Reset)
- WIFI, Bluetooth with integrated antenna
- 8GiB eMMC
U-Boot boots chained with fastboot in 64-bit mode.
For detailed build instructions see readme.txt in board directory.
Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'board/qualcomm/dragonboard410c/readme.txt')
-rw-r--r-- | board/qualcomm/dragonboard410c/readme.txt | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/board/qualcomm/dragonboard410c/readme.txt b/board/qualcomm/dragonboard410c/readme.txt new file mode 100644 index 0000000000..7fc7c7a79f --- /dev/null +++ b/board/qualcomm/dragonboard410c/readme.txt @@ -0,0 +1,71 @@ +# +# (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com> +# +# SPDX-License-Identifier: GPL-2.0+ +# + +Build & Run instructions: + +1) Install mkbootimg and dtbTool from + git://codeaurora.org/quic/kernel/skales (15ece94f09 worked for me) +2) Setup CROSS_COMPILE to aarch64 compiler +3) make dragonboard410c_config +4) make +5) generate fake, empty ramdisk (can have 0 bytes) +$ touch rd + +6) Generate qualcomm device tree table with dtbTool [1] +$ dtbTool -o dt.img arch/arm/dts + +7) Generate Android boot image with mkbootimg [2]: +$ mkbootimg --kernel=u-boot-dtb.bin --output=u-boot.img --dt=dt.img \ + --pagesize 2048 --base 0x80000000 --ramdisk=rd --cmdline="" + +8) Enter fastboot (reboot board with vol- button pressed) + +9) Boot it: +$ fastboot boot u-boot.img +or flash as kernel: +$ fastboot flash boot u-boot.img +$ fastboot reboot + + +What is working: +- UART +- GPIO (SoC) +- SD +- eMMC +- Reset +- USB in EHCI mode (usb starts does switch device->host, usb stop does the opposite) +- PMIC GPIOS (but not in generic subsystem) +- PMIC "special" buttons (power, vol-) + +What is not working / known bugs: +- SDHCI is slow (~2.5MiB/s for SD and eMMC) + +[1] To boot any kernel image, Little Kernel requires valid device tree for the +platform it runs on. dtbTool creates device tree table that Little Kernel scans. +Later on proper device tree is passed to next boot stage. +Full device tree is not required to boot u-boot. Enough would be: +/dts-v1/; + +/ { + model = "Qualcomm Technologies, Inc. Dragonboard 410c"; + compatible = "qcom,dragonboard", "qcom,apq8016-sbc"; + qcom,msm-id = <0xce 0x0 0xf8 0x0 0xf9 0x0 0xfa 0x0 0xf7 0x0>; + qcom,board-id = <0x10018 0x0>; + #address-cells = <0x2>; + #size-cells = <0x2>; + chosen { }; + aliases { }; + + memory { + device_type = "memory"; + reg = <0 0x80000000 0 0x3da00000>; + }; +}; + +but for simplicity (and because size of image is not that critical) we use +existing Qualcomm device trees. + +[2] Note that ramdisk is required, even if it is unused. |