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Diffstat (limited to 'user/bsps/arm/imx.rst')
| -rw-r--r-- | user/bsps/arm/imx.rst | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/user/bsps/arm/imx.rst b/user/bsps/arm/imx.rst index ee98f0b..47ad503 100644 --- a/user/bsps/arm/imx.rst +++ b/user/bsps/arm/imx.rst @@ -1,6 +1,6 @@ .. SPDX-License-Identifier: CC-BY-SA-4.0 -.. Copyright (C) 2017, 2019 embedded brains GmbH +.. Copyright (C) 2017, 2019 embedded brains GmbH & Co. KG .. Copyright (C) 2017, 2019 Sebastian Huber imx (NXP i.MX) @@ -15,7 +15,9 @@ U-Boot or barebox. Build Configuration Options --------------------------- -The following options are available at the configure command line. +The following options can be used in the BSP section of the waf +configuration INI file. The waf defaults can be used to inspect the +values. ``BSP_PRESS_KEY_FOR_RESET`` If defined to a non-zero value, then print a message and wait until pressed @@ -73,7 +75,7 @@ image. Use the following commands: .. code-block:: none - arm-rtems5-objcopy -O binary app.exe app.bin + arm-rtems@rtems-ver-major@-objcopy -O binary app.exe app.bin gzip -9 -f -c app.bin > app.bin.gz mkimage -A arm -O linux -T kernel -a 0x80200000 -e 0x80200000 -n RTEMS -d app.bin.gz app.img @@ -174,6 +176,23 @@ config like that: SYSINIT_DRIVER_REFERENCE(ksz8091rnb, miibus); #include <machine/rtems-bsd-config.h> +On chips with two Ethernet controllers, the MDIO lines are shared between the +two controllers for a number of chips variants. This is currently supported with +some restrictions on the initialization order. For this configuration to work, +you have to make sure that the pins are assigned to the Ethernet controller that +is initialized first. The initialization order in `libbsd` depends on the order +of the Ethernet controllers in the device tree. So if (for example) `fec2` is +defined in the device tree sources before `fec1`, make sure that the MDIO lines +are routed to `fec2` and that the Ethernet PHYs are a sub-node of `fec2` in the +device tree. + +Note that the clock for the second Ethernet controller is not necessarily +enabled in the `CCM`. On the i.MX6UL/ULL, the clock will be enabled by the +startup code if the node that is compatible with `fsl,imx6ul-anatop` can be +found in the device tree. If you have trouble with the second Ethernet +controller make sure that the `ENET2_125M_EN` bit in the `CCM_ANALOG_PLL_ENET` +register is set as expected. + MMC/SDCard Driver ----------------- |