diff options
| author | Tom Rini <[email protected]> | 2020-09-30 09:21:43 -0400 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2020-09-30 09:21:43 -0400 |
| commit | 01114adfc1e0bf3cf5e2f3da858bb2c8e9810c1c (patch) | |
| tree | 64ab9c9d1c2a5f3cc96b4c0fef1990cb73c1b356 /doc | |
| parent | 527fad0b2484bf1dd4c443c4c8f4384aa256938f (diff) | |
| parent | 924de3216e9efdf1cdc71b8632099213aac03f2c (diff) | |
Merge branch 'next' of https://gitlab.denx.de/u-boot/custodians/u-boot-riscv into next
- Disable CMD_IRQ for RISC-V.
- Update sipeed/maix doc
- Obtain reg of SiFive RAM via dev_read_addr_index() instead of regmap API.
- Cleans up RISC-V timer drivers and converts them to DM.
- Correctly handle IPIs already pending upon prior stage bootloader (on the K210)
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/board/sipeed/maix.rst | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/doc/board/sipeed/maix.rst b/doc/board/sipeed/maix.rst index efcde9aebf7..3f791b42fac 100644 --- a/doc/board/sipeed/maix.rst +++ b/doc/board/sipeed/maix.rst @@ -59,7 +59,7 @@ Sipeed MAIX BiT sipeed_maix_bitm_defconfig bit first Sipeed MAIX BiT with Mic sipeed_maix_bitm_defconfig bit_mic first Sipeed MAIXDUINO sipeed_maix_bitm_defconfig maixduino first Sipeed MAIX GO goE second -Sipeed MAIX ONE DOCK goD first +Sipeed MAIX ONE DOCK dan first ======================== ========================== ========== ========== Flashing causes a reboot of the device. Parameter -t specifies that the serial @@ -285,11 +285,15 @@ Technical Details Boot Sequence ^^^^^^^^^^^^^ -1. ``RESET`` pin is deasserted. +1. ``RESET`` pin is deasserted. The pin is connected to the ``RESET`` button. It + can also be set to low via either the ``DTR`` or the ``RTS`` line of the + serial interface (depending on the board). 2. Both harts begin executing at ``0x00001000``. 3. Both harts jump to firmware at ``0x88000000``. 4. One hart is chosen as a boot hart. -5. Firmware reads value of pin ``IO_16`` (ISP). +5. Firmware reads the value of pin ``IO_16`` (ISP). This pin is connected to the + ``BOOT`` button. The pin can equally be set to low via either the ``DTR`` or + ``RTS`` line of the serial interface (depending on the board). * If the pin is low, enter ISP mode. This mode allows loading data to ram, writing it to flash, and booting from specific addresses. |