RMP-RPI-CM4-dat

I believe the COMPUTE MODULE has enough pins to drive 6 chains.

See also: https://github.com/hzeller/rpi-rgb-led-matrix/blob/a3eea997a9254b83ab2de97ae80d83588f696387/wiring.md?plain=1#L144

Table: GPIO-pins for each hardware mapping

| | regular | adafruit-hat | adafruit-hat-pwm | regular-pi1 | classic | classic-pi1 | compute-module | | --------------- | ------- | ------------ | ---------------- | ----------- | ------- | ----------- | -------------- | | Parallel chains | 3 | 1 | 1 | 1 | 3 | 1 | 6 | | ~OE | GPIO 18 | GPIO 4 | GPIO 18 | GPIO 18 | GPIO 27 | GPIO 0 | GPIO 18 | | Clock | GPIO 17 | GPIO 17 | GPIO 17 | GPIO 17 | GPIO 11 | GPIO 1 | GPIO 16 | | Strobe | GPIO 4 | GPIO 21 | GPIO 21 | GPIO 4 | GPIO 4 | GPIO 4 | GPIO 17 | | A | GPIO 22 | GPIO 22 | GPIO 22 | GPIO 22 | GPIO 7 | GPIO 7 | GPIO 2 | | B | GPIO 23 | GPIO 26 | GPIO 26 | GPIO 23 | GPIO 8 | GPIO 8 | GPIO 3 | | C | GPIO 24 | GPIO 27 | GPIO 27 | GPIO 24 | GPIO 9 | GPIO 9 | GPIO 4 | | D | GPIO 25 | GPIO 20 | GPIO 20 | GPIO 25 | GPIO 10 | GPIO 10 | GPIO 5 | | E | GPIO 15 | GPIO 24 | GPIO 24 | GPIO 15 | - | - | GPIO 6 | | Chain 1/R1 | GPIO 11 | GPIO 5 | GPIO 5 | GPIO 11 | GPIO 17 | GPIO 17 | GPIO 7 | | Chain 1/G1 | GPIO 27 | GPIO 13 | GPIO 13 | GPIO 21 | GPIO 18 | GPIO 18 | GPIO 8 | | Chain 1/B1 | GPIO 7 | GPIO 6 | GPIO 6 | GPIO 7 | GPIO 22 | GPIO 22 | GPIO 9 | | Chain 1/R2 | GPIO 8 | GPIO 12 | GPIO 12 | GPIO 8 | GPIO 23 | GPIO 23 | GPIO 10 | | Chain 1/G2 | GPIO 9 | GPIO 16 | GPIO 16 | GPIO 9 | GPIO 24 | GPIO 24 | GPIO 11 | | Chain 1/B2 | GPIO 10 | GPIO 23 | GPIO 23 | GPIO 10 | GPIO 25 | GPIO 25 | GPIO 12 | | Chain 2/R1 | GPIO 12 | - | - | - | GPIO 12 | - | GPIO 13 | | Chain 2/G1 | GPIO 5 | - | - | - | GPIO 5 | - | GPIO 14 | | Chain 2/B1 | GPIO 6 | - | - | - | GPIO 6 | - | GPIO 15 | | Chain 2/R2 | GPIO 19 | - | - | - | GPIO 19 | - | GPIO 19 | | Chain 2/G2 | GPIO 13 | - | - | - | GPIO 13 | - | GPIO 20 | | Chain 2/B2 | GPIO 20 | - | - | - | GPIO 20 | - | GPIO 21 | | Chain 3/R1 | GPIO 14 | - | - | - | GPIO 14 | - | GPIO 22 | | Chain 3/G1 | GPIO 2 | - | - | - | GPIO 2 | - | GPIO 23 | | Chain 3/B1 | GPIO 3 | - | - | - | GPIO 3 | - | GPIO 24 | | Chain 3/R2 | GPIO 26 | - | - | - | GPIO 15 | - | GPIO 25 | | Chain 3/G2 | GPIO 16 | - | - | - | GPIO 26 | - | GPIO 26 | | Chain 3/B2 | GPIO 21 | - | - | - | GPIO 21 | - | GPIO 27 | | Chain 4/R1 | - | - | - | - | - | - | GPIO 28 | | Chain 4/G1 | - | - | - | - | - | - | GPIO 29 | | Chain 4/B1 | - | - | - | - | - | - | GPIO 30 | | Chain 4/R2 | - | - | - | - | - | - | GPIO 31 | | Chain 4/G2 | - | - | - | - | - | - | GPIO 32 | | Chain 4/B2 | - | - | - | - | - | - | GPIO 33 | | Chain 5/R1 | - | - | - | - | - | - | GPIO 34 | | Chain 5/G1 | - | - | - | - | - | - | GPIO 35 | | Chain 5/B1 | - | - | - | - | - | - | GPIO 36 | | Chain 5/R2 | - | - | - | - | - | - | GPIO 37 | | Chain 5/G2 | - | - | - | - | - | - | GPIO 38 | | Chain 5/B2 | - | - | - | - | - | - | GPIO 39 | | Chain 6/R1 | - | - | - | - | - | - | GPIO 40 | | Chain 6/G1 | - | - | - | - | - | - | GPIO 41 | | Chain 6/B1 | - | - | - | - | - | - | GPIO 42 | | Chain 6/R2 | - | - | - | - | - | - | GPIO 43 | | Chain 6/G2 | - | - | - | - | - | - | GPIO 44 | | Chain 6/B2 | - | - | - | - | - | - | GPIO 45 |