hic_docs: add installation instructions for lpc4322 HIC
@@ -34,3 +34,53 @@ Bootloader size is 64 KB
| NF-RST But. | I | P2_11 | A9 |
| LEDs |
| LED | O | P1_1 | K2 |
+
+## Installation using ROM USB DFU support
+
+The LPC4322 has USB DFU support in ROM which can be leveraged with
+[LPCScrypt](https://www.nxp.com/design/microcontrollers-developer-resources/lpcscrypt-v2-1-2:LPCSCRYPT)
+to load DAPLink bootloader.
+
+| Board | Label | Jumper |
+|------------------|----------|:------:|
+| LPCXpresso55S69 | DFU | J4 |
+| LPCXpresso55S28 | DFU | J4 |
+| LPCXpresso55S16 | Link2 | JP6 |
+| LPCXpresso55S06 | DFU | JP6 |
+| LPCXpresso54628 | DFU Link | JP5 |
+| LPCXpresso54618 | DFU Link | JP5 |
+| LPCXpresso54608 | DFU Link | JP5 |
+| LPCXpresso54114 | DFU Link | JP5 |
+| LPCXpresso54102 | DFU Link | JP5 |
+| LPCXpresso54S018 | DFU Link | JP5 |
+| LPCXpresso54018 | DFU Link | JP5 |
+| LPCXpresso43S67 | DFU Link | JP6 |
+| LPCXpresso43S37 | DFU Link | JP6 |
+| LPCXpresso18S37 | DFU Link | JP6 |
+| LPCXpresso4367 | DFU Link | JP6 |
+| LPCXpresso4337 | DFU Link | JP6 |
+| LPCXpresso1125 | DFU Link | JP5 |
+
+Install jumper according to table above and power cycle to force into
+DFU boot mode. Adapt the following command to program
+`lpc4322_bl_crc.bin`.
+
+```
+$ ./scripts/boot_lpcscrypt
+Looking for DFU devices with VID 1fc9 PID 000c ...
+dfu-util -d 1fc9:000c -c 1 -i 0 -t 2048 -R -D ./scripts/../bin/LPCScrypt_240.bin.hdr
+Booted LPCScrypt target (1fc9:000c) with ./scripts/../bin/LPCScrypt_240.bin.hdr
+$ ./bin/lpcscrypt querypart
+partID = 0xa00bcb3c 80
+decode = LPC4322: BankA 512KB
+Core Clock = 180000000
+$ ./bin/lpcscrypt program ${PATH_TO_BINARY}/lpc4322_bl_crc.bin BANKA
+..
+Programmed 57344 bytes to 0x1a000000 in 0.532s (105.297KB/sec)
+```
+
+Remove the jumper and power cycle. The `MAINTENANCE` drive should
+appear and you can copy the interface firmware into it. If there is no
+specific interface firmware support for the board you can use the
+generic `lpc4322_if_crc.bin` interface firmware which does not offer
+drag and drop flash functionality.
