Thread (23 messages) 23 messages, 7 authors, 2019-08-02

Re: [PATCH RFC 18/18] ARM: dts: Add minimal Raspberry Pi 4 support

From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2019-07-17 21:22:40


On 7/17/2019 2:16 PM, Stefan Wahren wrote:
This adds minimal support for the new Raspberry Pi 4 without the
fancy stuff like GENET, PCIe, XHCI, 40 bit DMA and V3D. The RPi 4 is avail=
able
in 3 different variants (1, 2 and 4 GB RAM), so leave the memory size to z=
ero
and let the bootloader take care of it.

Other differences to the Raspberry Pi 3:
- additional GIC 400 Interrupt controller
- new thermal IP and HWRNG
- additional MMC interface (emmc2)
- additional UART, I2C, SPI and PWM interfaces

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
=2D--
[snip]
+		rng@7e104000 {
+			interrupts =3D <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+
+			/* RNG is incompatible to brcm,bcm2835-rng */
+			status =3D "disabled";
It's an iproc-rng200, so you can either re-use the bcm7211-rng
compatible string that was just recently added or you can define a
bcm2838-rng if you prefer.
-- 
Florian

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