Add pwm2 overlay for renegade

[Tom Sl]

The base device tree for the Renegade (roc-rk3328-cc) already includes a PWM2 device but armbian does not include the .dtbo to enable it. Thus, it is also unavailable through armbian-config. The Libre builds of Debian support it, but not armbian.

 

I have copied the overlay from the Libre build of Debian for Renegade and it applies correctly on after I manually add it to the overlay directory:

/boot/dtb-6.12.32-current-rockchip64/rockchip/overlay/rockchip-rk3328-pwm2.dtbo

 

Note that as of today armbian-config is having a general issue with loading overlays via armbianEnv.txt. This can be bypassed by avoiding using armbian-config for overlays and editing armbianEnv.txt directly and adding the overlay name to the overlays=  line minus the "rockchip-" prefix.

 

 

FWIW - here's the overlay source:

===========================

/dts-v1/;

/ {
        compatible = "libretech,roc-rk3328-cc\0rockchip,rk3328";

        fragment@0 {
                target = <0xffffffff>;

                __overlay__ {
                        status = "okay";
                };
        };

        __fixups__ {
                pwm2 = "/fragment@0:target:0";
        };
};