Improve rockusb support in U-Boot

Dear Kever,

Quoted 9 lines · Kever Yang

Hi Alberto,

Thanks for your patches, and I'm so glad for people using
rockusb and try to improve it.

You can reference to rockchip source code here:
https://github.com/rockchip-linux/u-boot/blob/release/drivers/usb/gadget/f_rockusb.c

Quoted 3 lines

We use msc as base framework instead of dfu because of the big
performance improvement, and the cmd handling part will be the same.

Don't know if injecting rockusb protocol in f_mass_storage.c will be acceptable in terms of coexistence and maintainability of resulting f_mass_storage.c

Do you plan to upstream your tree?

I saw patches in your tree and resulting f_rockusb.c is more clear yes. But we pay the price in f_mass_storage.c.

Best Regards,
Alberto Panizzo

--
Amarula Solutions SRL Via le Canevare 30 31100
Treviso Italy Amarula Solutions BV Cruquiuskade 47
Amsterdam 1018 AM The Netherlands Phone. +31(0)851119171 Fax.
+31(0)204106211 www.amarulasolutions.com

Quoted 40 lines

PS: Yes, rockusb is available for all Rockchip's SoCs.

Thanks,
- Kever

Quoted 31 lines · Alberto Panizzo

rockusb protocol has been introduced by Eddie Cai in U-Boot mainline allowing to write internal eMMC of RK3288 based boards (and potentially all other Rockchip's CPUs).

On workstation side the open source project rkdeveloptool do implement the rockusb protocol. You can find it on GitHub here:
https://github.com/rockchip-linux/rkdeveloptool

This patchset increase the supported functionalities on target side allowing developers to:
- Read flash: rl command of rkdeveloptool
- Read chip version: rci command of rkdeveloptool
- Complete the write cycle implementing block erase
- Improve read/write speed

Alberto Panizzo (7):
usb: rockchip: fix command failed on host side due to missing
data usb: rockchip: implement skeleton for K_FW_GET_CHIP_VER command rockchip: rk3288: implement reading chip version from bootrom code usb: rockchip: implement K_FW_LBA_READ_10 command
usb: rockchip: implement K_FW_LBA_ERASE_10 command
usb: rockchip: be quiet on serial port while transferring data
usb: rockchip: boost up write speed from 4MB/s to 15MB/s

 arch/arm/include/asm/arch-rockchip/f_rockusb.h |   6 +-
 arch/arm/mach-rockchip/rk3288/Makefile         |   1 +
 arch/arm/mach-rockchip/rk3288/rockusb_rk3288.c |  30 ++++
 drivers/usb/gadget/f_rockusb.c                 | 225

++++++++++++++++++++++++- 4 files changed, 253 insertions(+), 9 deletions(-) create mode 100644 arch/arm/mach-rockchip/rk3288/rockusb_rk3288.c