Lup Yuen Lee 李立源 @lupyuen@qoto.org

#PinePhone USB EHCI Registers are (thankfully) documented in the Allwinner A64 manual

Article: https://lupyuen.github.io/articles/usb3?2#usb-enhanced-host-controller-interface

#PinePhone USB Programming is so much easier with USB EHCI ... Here's why

Article: https://lupyuen.github.io/articles/usb3?2#usb-enhanced-host-controller-interface

Building the #PinePhone USB Driver for Apache #NuttX Real-Time Operating System ... All shall be explained in this article

Article: https://lupyuen.github.io/articles/usb3?1

#PinePhone (Allwinner A64) has 2 USB Ports ... One goes to External USB, the other goes to LTE Modem

Source: https://github.com/lupyuen/pinephone-nuttx-usb#usb-enhanced-host-controller-interface-vs-on-the-go

How we fixed the #PinePhone USB Driver for Apache #NuttX RTOS ... Just start the USB Clocks and deassert the USB Resets

Source: https://github.com/lupyuen/pinephone-nuttx-usb#nuttx-ehci-driver-starts-ok-on-pinephone

Apache #NuttX USB Driver starts OK on #PinePhone yay! 🎉 Thanks to the super-inspiring coffee with @tllim 😀

Source: https://github.com/lupyuen/pinephone-nuttx-usb#nuttx-ehci-driver-starts-ok-on-pinephone

Resetting the #PinePhone USB Controller ... Our USB Driver for Apache #NuttX RTOS will set these Allwinner A64 Registers

Source: https://github.com/lupyuen/pinephone-nuttx-usb#usb-controller-reset

Clocks for #PinePhone USB Controller ... We'll enable them in our USB Driver for Apache #NuttX RTOS

Source: https://github.com/lupyuen/pinephone-nuttx-usb#usb-controller-clocks

#PinePhone USB Driver gets messy ... Because the USB Physical Layer is shared by EHCI USB Host Controller and Mentor Graphics USB OTG Controller

Source: https://github.com/lupyuen/pinephone-nuttx-usb#power-on-the-usb-controller

Here's how U-Boot Bootloader powers on #PinePhone's USB Controller ... We'll do the same for Apache #NuttX RTOS

Source: https://github.com/lupyuen/pinephone-nuttx-usb#power-on-the-usb-controller

HDCP Fail ugh #meWatch

#PinePhone Allwinner A64 has 2 USB Ports ... Both support EHCI, but only one supports OTG

Source: https://github.com/lupyuen/pinephone-nuttx-usb#usb-enhanced-host-controller-interface-vs-on-the-go

Automated Daily Build and Test of #PinePhone on Apache #NuttX RTOS ... How we'll do it with Unicorn Emulator

Article: https://lupyuen.github.io/articles/unicorn2?10#automated-daily-build-and-test

Troubleshooting an Arm64 Memory Mgmt Fault in Apache #NuttX RTOS ... Here's what the Call Graph tells us

Article: https://lupyuen.github.io/articles/unicorn2?9#arm64-memory-management-fault

Here's how we find the #PinePhone USB Driver in U-Boot Bootloader

Source: https://github.com/lupyuen/pinephone-nuttx-usb#pinephone-usb-drivers-in-u-boot-bootloader

Here are the System Drivers started by Apache #NuttX RTOS when it boots

Article: https://lupyuen.github.io/articles/unicorn2?8#pinephone-continues-booting-nuttx

Here's how Apache #NuttX RTOS boots on #PinePhone ... Thanks to our Call Graph

Article: https://lupyuen.github.io/articles/unicorn2?7#pinephone-boots-nuttx

#NuttX USB Driver fails to start on #PinePhone ... Let's check the power

Source: https://github.com/lupyuen/pinephone-nuttx-usb#halt-timeout-for-usb-controller

Apache #NuttX RTOS Mainline is built and tested on #RISCV PineCone #BL602 every day ... 588 Daily Builds so far 👍

Source: https://github.com/lupyuen/nuttx/tags

Updating the #NuttX USB Driver to support 64-bit #PinePhone

Source: https://github.com/lupyuen/pinephone-nuttx-usb#64-bit-update-for-ehci-driver