[For Preview] Add Ariaboard Photonicat 2 support #5
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Pull request overview
This PR adds comprehensive support for the Ariaboard Photonicat 2 board based on the Rockchip RK3576 SoC, including U-Boot configuration, device tree definitions, kernel patches for PWM/MFPWM drivers, and board-specific customizations.
Key changes:
- U-Boot and kernel device tree support for RK3576-based Photonicat 2
- New PWM v4 and MFPWM drivers for advanced PWM functionality
- Custom USB watchdog driver for USB hub monitoring
- Kernel configuration updates for networking and USB functionality
Reviewed changes
Copilot reviewed 24 out of 25 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| patch/u-boot/v2026.01/add-photonicat2-support.patch | Adds U-Boot v2026.01 device tree and defconfig for Photonicat 2 |
| patch/u-boot/legacy/u-boot-radxa-rk35xx/dt/rk3576-photonicat2.dts | Device tree source for legacy U-Boot support |
| patch/u-boot/legacy/u-boot-radxa-rk35xx/dt/rk3576-photonicat2-u-boot.dtsi | U-Boot-specific device tree includes for pre-relocation setup |
| patch/u-boot/legacy/u-boot-radxa-rk35xx/defconfig/photonicat2-rk3576_defconfig | Legacy U-Boot configuration for Photonicat 2 |
| patch/u-boot/legacy/u-boot-radxa-rk35xx/board_photonicat2/*.patch | Board-specific patches for eMMC frequency and variable initialization |
| patch/kernel/archive/rockchip64-6.18/rk3576-00*.patch | Kernel patches for GPIO, MMC tuning, power domain, USB, PWM/MFPWM drivers |
| patch/kernel/archive/rockchip64-6.18/dt/rk3576-photonicat2.dts | Main kernel device tree for Photonicat 2 board |
| patch/kernel/archive/rockchip64-6.18/board-photonicat2*.patch | Board integration and USB watchdog driver |
| config/kernel/linux-rockchip64-edge.config | Kernel configuration updates for networking, USB, and board-specific drivers |
| config/boards/photonicat2.csc | Board configuration file defining boot parameters and packages |
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HackingGate
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HackingGate
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Dec 13, 2025
| + case PCAT_PM_COMMAND_PMU_REQUEST_SHUTDOWN: | ||
| + dev_info(&pm_data->serdev->dev, | ||
| + "Power button pressed, initiating shutdown\n"); | ||
| + /* Trigger graceful system shutdown */ |
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Why don’t you just use the dts modded by immortalwrt instead? It’s more upstream friendly and then can drop the usb watchdog driver.
Currently the “photonicat-pm” node lack a fan node, please add it if you want to use more “official” device tree.
…shutdown handling - Move PCIe WiFi regulator control from device tree to photonicat-pm driver for better power cycling - Add pcie-wifi-regulator-gpio support to control both WLAN_EN and regulator independently - Implement proper WiFi power cycling with 10s delay to ensure full discharge when on charger - Add pcie_wifi_reset sysfs attribute for manual WiFi power cycling - Power off WiFi GPIOs immediately on power button press before
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Description
This is a preview only PR for updated content of Photonicat 2 support before making a pull request to Armbian.
How Has This Been Tested?
photonicat-pmpower manager driver worked (can check battery status, control fan, do graceful shutdown)aic8800driver worked for onboard Wi-FiScenarios to test NIC interfaces stability after reboot: