Raspberry Pi 4: Difference between revisions
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== Raspberry Pi 4 ==
This board is one of the [[Raspberry Pi]] models, released in 2019. It has 1G - 8G RAM, ARMv8 (AArch32 and AArch64) CPU, and VideoCore VI GPU.
== Hardware ==
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- WLAN controller is connected to mmc0 using SDIO.
- SD controller is now a SDHCI thing. Should work according to spec (except for [https://github.com/torvalds/linux/blob/master/drivers/mmc/host/sdhci-iproc.c#L188 this], min clock frequency to 200kHz instead of 100kHz).
CPU is similar to the one in the Rpi3, except with the A53 cores replaced in-situ with A72. Same startup logic, same usage. Also limited to max 4 cores per chip by design.
GPIOs are similar, but have more options: https://elinux.org/RPi_BCM2711_GPIOs
== See Also ==
* [[Raspberry Pi Bare Bones]]
[[Category:ARM]]
[[Category:Raspberry Pi]]
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