On Wed, Nov 22, 2023 at 06:54:11PM +0000, Peter Robinson wrote: > > > These patches bring initial boot support for RPI5. Without it the > > > latest master fails with the message: > > > > DRAM: mbox: Timeout waiting for response > > > > bcm2835: Could not query ARM memory size > > > > > > With those patches and rpi_arm64_defconfig (with disabled > > > CONFIG_VIDEO_BCM2835) I'm able to get a working u-boot prompt (over > > > serial). FDT comes from firmware (EEPROM). > > > > > > > U-Boot 2024.01-rc3-00003 > > > > > > > > DRAM: 1016 MiB (effective 8 GiB) > > > > mbox: Header response code invalid > > > > bcm2835: Could not query board revision > > > > FDT model : Raspberry Pi 5 Model B Rev 1.0 > > > > Core: 14 devices, 7 uclasses, devicetree: board > > > > MMC: > > > > Loading Environment from FAT... ** Bad device specification mmc 0 ** > > > > In: serial,usbkbd > > > > Out: serial,vidconsole > > > > Err: serial,vidconsole > > > > Net: No ethernet found. > > > > starting USB... > > > > No working controllers found > > > > Hit any key to stop autoboot: 0 > > > > No working controllers found > > > > No ethernet found. > > > > No ethernet found. > > > > U-Boot> > > > > > > These patches are based on v2024.01-rc3 and tested with RPI5 8GB. > > > > > > Known issues: > > > * CONFIG_VIDEO_BCM2835 doesn't work. > > > * MBOX get board revision (0x10002) doesn't work (the response status > > > is 0x8000_0001). Looks like a number of tags doesn't work anymore > > > (board/serial/MAC) but could be fetched from FW FDT. > > > > Nice. I think it's the MMC controller that we should be able to support > > with just a little more work as it's shared with rockchip, and we just > > need to match the compatible, and mirror whatever tweak is also in the > > rpi kernel tree for it. > > Is it? According to the RPi DT the sdio1 interface is used to drive > the mSD card (it's SD Express capable which I think is essentially > PCIe/NVME) which has a "brcm,bcm2712-sdhci" compatible [2] which is > added to the sdhci-brcmstb.c driver[3]. We do have a driver for this > but it's not the rockchip driver, I think you may be confused with the > sdhci interface in the RP1 chip which is a designware sdhci IP called > dwcmshc [4].
Yes, you're right I confused it with the sdhci IP. -- Tom
signature.asc
Description: PGP signature
