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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2019-08-09 14:29:43 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-08-12 09:07:52 +0200 |
| commit | 909934e3a76d665b55565e4f87b1a10c8a3e4b0e (patch) | |
| tree | 4b6b99da1a2b3db7640e437379da874c24ca6c67 /Documentation | |
| parent | 0b56bacfed66a074b17f9c402cc769590d033d9b (diff) | |
| download | barebox-909934e3a76d665b55565e4f87b1a10c8a3e4b0e.tar.gz barebox-909934e3a76d665b55565e4f87b1a10c8a3e4b0e.tar.xz | |
Documentation: add imx6ull-evk boot mode documentation
The compute module on the 6ULL-EVK has two DIP switches for choosing the
boot mode. Instead of looking them up in the vendor documentation[1] each
time, document them here.
[1]: https://media.digikey.com/pdf/Data%20Sheets/Freescale%20Semi/i.MX_6UL_EVK_QSG.pdf
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/boards/imx/nxp-imx6ull-evk.rst | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/boards/imx/nxp-imx6ull-evk.rst b/Documentation/boards/imx/nxp-imx6ull-evk.rst new file mode 100644 index 0000000000..702f55dff8 --- /dev/null +++ b/Documentation/boards/imx/nxp-imx6ull-evk.rst @@ -0,0 +1,62 @@ +NXP i.MX6ULL EVK Evaluation Board +================================= + +Compute module comes with: + +* 512MiB of DDR3L SDRAM +* 256 MB Quad SPI Flash + + +Boot Configuration +================== + +The NXP i.MX6ULL EVK Evaluation Board has two switches responsible for +configuring bootsource/boot mode: + + * SW602 for selecting appropriate BOOT_MODE + * SW601 for selecting appropriate boot medium + +In order to select internal boot set SW602 as follows:: + + +-----+ + | | + | O | | <--- on = high level + | | | | + | | O | <--- off = low level + | | + | 1 2 | + +-----+ + +Bootsource is the QSPI:: + + +---------+ + | | + | | | | | | + | | | | | | <---- QSPI + | O O O O | + | | + | 1 2 3 4 | + +---------+ + +Bootsource is the MicroSD:: + + +---------+ + | | + | | | O | | + | | | | | | <---- MicroSD + | O O | O | + | | + | 1 2 3 4 | + +---------+ + + +Serial boot SW602 setting needed for ``imx-usb-loader`` is as follows:: + + +-----+ + | | + | | O | <--- on = high level + | | | | + | O | | <--- off = low level + | | + | 1 2 | + +-----+ |