lupyuen/pinephone-nuttx
1
0
Fork 0
mirror of https://github.com/lupyuen/pinephone-nuttx.git synced 2025-01-12 20:58:34 +08:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Update doc

Browse source
This commit is contained in:
Lee Lup Yuen 2023-02-09 18:18:57 +08:00
parent 2c5b5b214e
commit 9120a1bd49
1 changed files with 24 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

30
README.md
View file

@ -6478,23 +6478,41 @@ Or the LoRa Driver that we have ported to NuttX...
# USB Driver and LTE Modem Driver for PinePhone
TODO: Usb, imx8, bsd
_What NuttX Drivers would we need to turn PinePhone into a Feature Phone? (Phone Calls and SMS only)_
"7.5. USB", Page 583, A64 User Manual
We need a NuttX Driver for the PinePhone's __Quectel LTE Modem__.
Which talks over USB Serial. Thus we also need a NuttX Driver for PinePhone's __Allwinner A64 USB Controller__.
(See the USB Docs in Allwinner A64 User Manual, Section 7.5 "USB", Page 583)
_Any sample code?_
TODO: Refer to the Allwinner A64 USB Drivers in FreeBSD and NetBSD
https://github.com/freebsd/freebsd-src/blob/main/sys/dev/usb/controller/musb_otg_allwinner.c#L95
https://github.com/NetBSD/src/blob/trunk/sys/arch/arm/sunxi/sunxi_usbphy.c#L95
_But Allwinner A64's Official Docs are horrigibly lacking..._
Maybe we refer to the NXP i.MX 8 docs, compare with the FreeBSD and NetBSD USB Drivers for i.MX 8?
(Since NXP i.MX 8 is so much better documented than Allwinner A64)
_How do USB Drivers work in NuttX?_
TODO: USB Drivers in NuttX
https://nuttx.apache.org/docs/latest/components/drivers/special/usbhost.html
https://github.com/lupyuen2/wip-pinephone-nuttx/blob/master/arch/arm/src/stm32/stm32_otgfshost.c
https://github.com/lupyuen2/wip-pinephone-nuttx/blob/master/arch/arm/src/stm32/stm32_usbhost.c
https://github.com/freebsd/freebsd-src/blob/main/sys/dev/usb/controller/musb_otg_allwinner.c#L95
_How did we get the FreeBSD and NetBSD Drivers?_
https://github.com/NetBSD/src/blob/trunk/sys/arch/arm/sunxi/sunxi_usbphy.c#L95
https://github.com/lupyuen/pinephone-nuttx/blob/main/sun50i-a64-pinephone-1.2.dts#L647-L721
TODO: From the PinePhone Device Tree: [sun50i-a64-pinephone-1.2.dts](https://github.com/lupyuen/pinephone-nuttx/blob/main/sun50i-a64-pinephone-1.2.dts#L647-L721)
```text
usb@1c19000 {