Lpc55 port1 hs

[hathach]

Describe the PR
This PR implement Port1 Highspeed for lpc55 and lpc546xx/lpc540xx (not tested on actual hardware). There is a few gotcha

• LPC55 highspeed usb can only write/access to USB RAM (0x40100000), attribute((section("m_usb_global")))
• USB RAM does not support unaligned access despite it is cortex M4. Extra macro TUP_MCU_STRICT_ALIGN is used to overwrite ARCH one, extra effort is also needed to prevent compiler to generate optimized code that result in unaligned access.
• Full and Highspeed command/status words for buffer offset & nbytes are different
• Lots of other works for multiple ports and mixed full/high speed support.
• Tested worked with cdc_msc, hid_composite etc .. advanced class such as net and audio is not tested. ISO transfer is not yet supported.

@nxf58843 @gsteiert @UweBonnes may be interested.

[UweBonnes]

" make BOARD=mcu_link flash" enumerates successfull. Thanks!
"make BOARD=mcu_link SPEED=full" gets overwritten by hw/bsp/lpc55/family.mk.

[hathach]

" make BOARD=mcu_link flash" enumerates successfull. Thanks!
"make BOARD=mcu_link SPEED=full" gets overwritten by hw/bsp/lpc55/family.mk.

make BOARD=mcu_link PORT=0 to select fullspeed port0, unlike stm32, the lpc55 port1 always has HS PHY so it is always operated at highspeed.

[UweBonnes]

The mcu_link has only port 1 connected.

[hathach]

then just use it with highspeed, why would you want to force it to operate at fullspeed.

[UweBonnes]

So the line "SPEED ?= high" in board.mk is superfluous. Should I do another PR, will you correct or does it not matter?

[hathach]

yeah, it is not needed, no worry, I will may a push for to clean it up. Just done b5339ca