はじめに

Raspberry Pi 5のSoCはBCM2712です。Raspberry Pi 4のSoCであるBCM2711とどこが違うのかを調べてみました。

BCM2712

arch/arm/boot/dts/bcm2712.dtsi を下記のように整理してみました。

bcm2712-hvs (vc4) : 割り込み 2835-hvs, 2711-hvs, 2712-hvs
bcm2712-mop (vc4) : 2835-txp, 2712-mop, 2712-moplet
bcm2712-moplet (vc4) : 2835-txp, 2712-mop, 2712-moplet
bcm2712-aon-pinctrl
bcm2712-pinctrl
bcm2712-pm : 2835-pm-wdt, 2835-pm, 2711-pm, 2712-pm ("v3d", "peri_image", "h264", "isp")
bcm2712-hdmi0 : 2835-hdmi, 2711-hdmi0, 2711-hdmi1, 2712-hdmi0, 2712-hdmi1
bcm2712-hdmi1
bcm2711-l2-intc : 7271-l2-intc, 2711-l2-intc
bcm2712-vc6 : cygnus-vc4, 2835, 2711-vc5, 2712-vc6 (VC4 GenX)
brcm,2712-v3d : 7278, 7268, 2711, 2712
bcm2712-iommu
bcm2712-iommuc
bcm2712-dma : 2835, 2711, 2712
bcm2712-pcie : pcie0 (x1), pcie1 (x1), pcie2 (x4) : 2711, 2712, 7211, 7278
bcm7216-pcie-sata-rescal
bcm2712-mip-intc : mip0, mip1
bcm2711-genet-v5 : GbE(rgmii) gnet-v1, v2, v3, v4, v5, 7712, 2711, 2712
brcm,syscon-piarbctl
raspberrypi,rpivid-vid-decoder
bcm2712-sdhci : sdio1, sdio2 7425, 7445, 7216, 2712
bcm2711-emmc2 : sdio0 2835-sdhci, 2711-emmc2, 7211a0-sdhci, sdhci-iproc
brcmstb-reset
raspberrypi,pispbe
brcm2711-dvp : DVP clock制御
bcm2711-i2c : i2c0, 3, 4, 5, 6, 8
bcm2711-cprman
bcm2711-rng200
bcm2711-avs-monitor
arm,pl011 : uart0, 2, 3, 4, 5
bcm2835-system-timer
bcm2835-mbox
bcm2835-usb
bcm2835-sdhost
bcm2835-pwm : pwm0, 1
bcm2835-i2s
bcm2835-spi : spi0, 3, 4, 5, 6
bcm7038-pwm
bcm7271-uart : uarta, uartb, uartc
brcmstb-i2c : ddc0, 1bscd
brcmstb-gpio