lupyuen opened a new pull request, #7919: URL: https://github.com/apache/nuttx/pull/7919
## Summary This PR adds the driver for TCON0 (Timing Controller) on Allwinner A64 SoC. The TCON0 Driver will be used by the upcoming Display Driver for PINE64 PinePhone. ### Modified Files `arch/arm64/src/a64/Kconfig`: Added the Kconfig option for "A64 Peripheral Selection > TCON0" (`CONFIG_A64_TCON0`), which enables the TCON0 Driver `arch/arm64/src/a64/hardware/a64_memorymap.h`: Added the Base Address for TCON0 `arch/arm64/src/a64/Make.defs`: Added the TCON0 Driver to the Makefile ### New Files `arch/arm64/src/a64/a64_tcon0.c`, `a64_tcon0.h`: TCON0 Driver for Allwinner A64 ### Updated Documentation `platforms/arm/a64/boards/pinephone/index.rst`: Added TCON0 as supported peripheral for PinePhone ## Impact Our TCON0 Driver will be built only when we select the Kconfig option for "A64 Peripheral Selection > TCON0" (`CONFIG_A64_TCON0`). The TCON0 Driver will be called by the upcoming driver for A64 Display Engine. Our TCON0 Driver has no impact on existing code because it's not called yet by the existing code. The Driver Code is derived from my Reverse-Engineering of the PinePhone Display Driver, based on the logs captured from the PinePhone p-boot Bootloader: - ["Rendering PinePhone's Display (DE and TCON0)"](https://lupyuen.github.io/articles/de) - ["NuttX RTOS for PinePhone: Render Graphics in Zig"](https://lupyuen.github.io/articles/de2) ## Testing We tested the TCON0 Driver with a Zig Test Program [as explained here](https://github.com/lupyuen/pinephone-nuttx#test-timing-controller-tcon0-driver-for-nuttx-kernel). Our Zig Test Program renders the [Test Pattern](https://lupyuen.github.io/images/dsi3-title.jpg) successfully on PinePhone. Here's the Test Log, with Graphics Logging Enabled... - [NuttX Kernel TCON0 Test Log](https://gist.github.com/lupyuen/33d7cc006e841a9e5fdff264b4c759c4) We also tested with Graphics Logging Disabled, to preempt any timing issues... - [NuttX Kernel TCON0 Test Log (Graphics Logging Disabled)](https://gist.github.com/lupyuen/61a1374c9ea6a1b7826488da688e8c6c) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
