Is it possible to use the GPIO pins for a DPI display and HDMI at the same time? I have a Raspberry Pi, but I don't have a DPI display to test this with.

I would like to create a battery powered device that has wifi and expandable storage. USB should be avoided because it is very power inefficient, especially when compared to SDIO wifi and SD cards. UART, SPI, and other interfaces are too slow for the desired transfer speeds. The main problem I face ...

For those curious about pin muxing on the Raspberry Pi compute module, they have traditionally had to use the BCM2835 Arm Peripherals document provided by the RPi Foundation. This document is no longer current as recently more functionality has been revealed. I have created a Google doc with this ne...

Secondly how do I know which pins are which? I know those pins are for SD1, but I don't know which is CLK, CMD, and Data0-3.

It would appear that I was looking at the wrong device tree entries. I was looking at linux/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts which is not the correct one. The correct one is linux/arch/arm/boot/dts/bcm2710-rpi-3-b.dts for the raspberry pi 3. How should I have known which one the rasp...

I am working with the compute module and I want to add a Parallel RGB screen using DPI (GPIO's 0-27) and a wifi module using SDIO. The problem is that as far as I know there are only two SD ports specifically SD0 (GPIO's 46-53) which is already used by the NAND flash and SD1 (GPIO's 22-27) which is ...