Quartz64 Development

This page documents the current status of software support for the Quartz64 single-board computer, and provides links to resources to help prospective contributors get started. Information is kept current on a best-effort basis as various patches get accepted into the kernel.

Overview

Upstreaming Status

Function	Status		Component	Notes	Applies To
Video Output	In review[1]		rockchipdrm/VOP2
	Needs porting		rockchip-edpphy-naneng	Downstream: [2] and [3] Coordinate any porting with Rockchip first
	Needs porting		dw-mipi-dsi-rockchip	Downstream: [4]
3D Acceleration	Linux Mainline	Upstream Mesa	panfrost	As of 5.18[5]
Video Decode	Linux Staging	GStreamer only, no ffmpeg[6]	hantro-vpu and rkvdec, using v4l2-requests	Necessary device tree changes for the Hantro VPU in review. rkvdec hardware has been updated compared to rk3399 and may require driver changes.
Video Encode	Needs writing	GStreamer only	JPEG on VEPU121	Driver likely exists in rockchip_vpu2_hw_jpeg_enc.c, but non-trivial additions are needed to support this chip's separate JPEG encoder block
	Needs writing	?	H.264 on VEPU540
	Needs writing	?	H.265 on VEPU540
Audio	Linux Mainline		rockchip-i2s-tdm	As of 5.16[7]
	Linux Mainline		rockchip-spdif	As of 5.15[8]
	Linux Mainline		rk817-codec	As of 5.14[9].	Quartz64 Model A/B
u-boot	Waiting on ATF sources
Device Tree	Linux Mainline		Quartz64 Model A	As of 5.16[10]	Quartz64 Model A
	In review[11]		Quartz64 Model B		Quartz64 Model B
	In review[12]		SOQuartz		SOQuartz
	Linux Mainline		PineNote	As of 5.18[13]	PineNote
Gigabit Ethernet	Linux Mainline		rk3566-gmac	As of 5.14[14]
	Linux Mainline		yt8511-phy	As of 5.14[15]
IOMMU	Linux Mainline		rockchip-iommu	As of 5.14[16]
GPIO	Linux Mainline		gpio-rockchip	As of 5.15[17]
pinctrl	Linux Mainline
Thermal Regulation	Linux Mainline		rockchip-thermal	As of 5.14[18]
PCIe	Linux Mainline		pcie-dw-rockchip	As of 5.15[19]
Power Management	Linux Mainline		rockchip-pm-domains	As of 5.14[20]
Voltage Control	Linux Mainline		rk3568-pmu-io-voltage-domain	As of 5.15[21]
SPI	Linux Mainline		spi-rockchip	As of 5.14[22]. Necessary device tree changes in review.
Battery	In review[23]		rk817-charger	In the BSP tree this is handled by rk817_battery.c and rk817_charger.c.	Quartz64 Model A, Pinenote
Microphone	Linux Mainline		rockchip-saradc	As of 5.15[24]. Headphone jack mic seems to connect to SARADC_VIN2_HP_HOOK, so I'm pretty sure that the dtsi and driver changes are needed for that mic to work
USB 2.0	Linux Mainline		rockchip-usb2phy	As of 5.17[25]
e-Ink	In review (RFC)[26]		rockchip-ebc	A DRM driver is available here; also see RK3566 EBC Reverse-Engineering
Combo PHY	Linux Mainline		naneng-combphy	As of 5.18[27]. Still requires DTS changes
RGA	Needs fixing		rockchip-rga	User:CounterPillow experimentally enabled it[28] in the device tree and ran gstreamer's v4l2convert through it to test, resulting in a completely garbled output.
Fan Controller	Needs porting		emc2301	Previous attempts at mainlining: [29] and [30]. Latest iteration: [31]	SOQuartz Blade
CIF (CSI Camera)	Needs porting		video_rkcif	Downstream: [32]
NPU	Needs writing			Downstream version is a closed source SDK. Major undertaking to reimplement this as Linux does not (yet) appear to have a generic architecture for neural accelerators.

Current Status

The following sections give an overview over the current status of different parts of the board. Some parts are waiting on a driver to be written or ported, others only need various adjustments.

According to pgwipeout, I/O device performance is within expected ranges now.

Working

• eMMC
• SDMMC0 (SD cards)
• GMAC (Gigabit Ethernet)
• USB 2.0
• SATA 2
• SATA 3
• UART
  • UART 0 (Pi-bus)
  • UART 1 (Bluetooth)
  • UART 2 (Pi-bus, debug)
• Video Decode
  • VP8
• Battery
• GPU
• Audio
  • Analog audio works
  • SPDIF works
  • HDMI works
• SPI — works, user needs to modify device tree to add devices
• I²C — works, user needs to modify device tree to add devices

Partially Working

• PCI-Express Controller — everything but devices that need cache coherency (e.g. dGPUs) should work
  • User:CounterPillow noticed some weirdness with NVMe devices disconnecting during heavy write operations, likely down due to power draw on one of the rails as the same sustained bandwidth could be achieved with a different PCIe device with no issue.
• SDMMC1 (Wi-Fi) — AP6256 working, BL602 needs some work to make it flash firmware
• GIC — needs errata published by Rockchip to get upstream to add device-specific workarounds^[33]
• Video Output — only at 1920x1080p60 and nothing else, very buggy and rough around more than just the edges

Confirmed Broken

• USB 3.0 — only works with very short cables and depends on the device. This is due to a hardware design issue relating to the coupling capacitors needed for SATA, which shares the same lines as USB 3.0.
  • Hardware design changes have been suggested to engineers, it's in their hands now.
• Module autoloading for the Ethernet PHY. The Motorcomm PHY does not have a vendor ID written into the appropriate hardware block, so there is no canonical way to identify the device.

Needs Testing

• E-Paper — needs EBC driver
• Microphone Input
• CSI — needs CIF driver
• eDP — needs PHY driver and controller driver
• DSI — needs driver

TODO

ebc-dev Reverse Engineering and Development

The driver for the eInk panel needs to both be reverse engineered and then rewritten as C. In its current form, it is mostly an assembly dump produced by gcc with debug symbols. See RK3566 EBC Reverse-Engineering for details.

Investigate MCU

The RK3566 comes with an integrated RISC-V microcontroller (MCU). It communicates with the A55 host through the Mailbox system driven by the rockchip-mailbox driver. Since this MCU would be quite useful for things such as low power standby mode, investigating how it can be turned on and have firmware flashed to it should greatly enhance the power saving features of the PineNote.

Mainline U-Boot Work

Currently, mainline U-Boot does not have support for the RK3566 SoC used on the Quartz64. That's why we currently use the "downstream" Rockchip U-Boot, which is based on an old version of U-Boot and contains vendor specific patches that have not undergone the same level of code review as they'd have done had they been submitted upstream.

While the lack of ATF sources means that using mainline U-Boot would still require the use of Rockchip provided binaries for the firmware, the mainline U-Boot works needs to be done eventually anyway, and even with Rockchip blobs, a more modern version of U-Boot will be much nicer to use.

Someone needs to get on the task of investigating what minimally needs to be ported to get the board booting with mainline U-Boot, port those changes, and submit them for review.

Things that need to be done

This list is non-exhaustive as we don't exactly know how much is missing

• Do the rk3568.dtsi refactoring into rk356x.dtsi/rk3568.dtsi/rk3566.dtsi that the kernel did, probably just port the kernel dtsi files for this
• Bring the kernel's Quartz64 DTS into the tree
• Write a quartz64-rk3566_defconfig based on evb-rk3568_defconfig

Stretch Goals:

• Port the Naneng Combo PHY driver to u-boot so we can SATA, USB 3 and PCIe boot
• Look into SPI
• Port the Motorcomm PHY driver to u-boot for networking?
• Port a basic VOP2 driver to get a framebuffer from u-boot

List of Useful Resources for this Task

• Downstream Rockchip U-Boot repository with Quartz64 specific patches: https://gitlab.com/pgwipeout/u-boot-rockchip/-/tree/quartz64
• Mainline Rockchip custodian U-Boot repository: https://source.denx.de/u-boot/custodians/u-boot-rockchip
• U-Boot Mailing List: https://lists.denx.de/listinfo/u-boot

eDP Driver Porting

The eDP PHY driver and controller driver needs to be ported, brought into shape and submitted with proper commit attribution to the Rockchip authors.

User:CounterPillow has experimentally ported stuff, but it's currently not working.

Linux Kernel Config Options

• CONFIG_SND_SOC_ROCKCHIP_I2S_TDM
  • for Analog and (in the future) HDMI audio
• CONFIG_SND_SOC_RK817
  • for Analog audio on the Model A
• CONFIG_STMMAC_ETH
  • Ethernet
• CONFIG_DWMAC_ROCKCHIP
  • Ethernet
• CONFIG_MOTORCOMM_PHY
  • Ethernet, set this one to Y, m won't work out of the box as module autoloading does not work for this specific PHY (the vendor ID is zeroed out), alternatively tell users in board-specific setup instructions to force loading the motorcomm module if you set it to m.
• CONFIG_MMC_DW
  • MMC/SD
• CONFIG_MMC_DW_ROCKCHIP
  • MMC/SD
• CONFIG_MMC_SDHCI_OF_DWCMSHC
  • MMC/SD
• CONFIG_PCIE_ROCKCHIP_DW_HOST
  • PCIe
• CONFIG_PHY_ROCKCHIP_NANENG_COMBO_PHY
  • PHY for PCIe/SATA/USB3, not yet upstream
• CONFIG_DRM_PANFROST
  • GPU
• CONFIG_SND_SOC_ROCKCHIP_SPDIF
  • SPDIF audio
• CONFIG_ROCKCHIP_DW_HDMI
  • HDMI PHY
• CONFIG_ROCKCHIP_VOP2
  • Video output, not yet upstream
• CONFIG_ARCH_ROCKCHIP
  • General SoC support
• CONFIG_ROCKCHIP_PHY
  • General SoC support
• CONFIG_PHY_ROCKCHIP_INNO_USB2
  • USB 2
• CONFIG_RTC_DRV_RK808
  • Real-time Clock
• CONFIG_COMMON_CLK_RK808
  • Real-time Clock
• CONFIG_MFD_RK808
  • Various things relating to the RK817 chip
• CONFIG_REGULATOR_RK808
  • Voltage regulators
• CONFIG_ROCKCHIP_PM_DOMAINS
  • Power management domains
• CONFIG_GPIO_ROCKCHIP
  • GPIO support
• CONFIG_PINCTRL_ROCKCHIP
  • GPIO and general SoC support
• CONFIG_PWM_ROCKCHIP
  • PWM support
• CONFIG_ROCKCHIP_IOMMU
  • IOMMU support
• CONFIG_ROCKCHIP_MBOX
  • Mailbox support (for communication with MCU)
• CONFIG_ROCKCHIP_SARADC
  • Analog-to-digital conversion support, for e.g. microphones
• CONFIG_ROCKCHIP_THERMAL
  • Temperature sensor and thermal throttling support
• CONFIG_SPI_ROCKCHIP
  • SPI support
• CONFIG_VIDEO_HANTRO_ROCKCHIP
  • Hardware video decoder support
• CONFIG_ROCKCHIP_IODOMAIN
  • General SoC support so your I/O pins have the right voltage
• CONFIG_COMMON_CLK_ROCKCHIP
  • Common clock support

Resources

Repositories

• pgwipeout's kernel tree
  • https://gitlab.com/pgwipeout/linux-next/-/tree/quartz64-v5.15-rc1
• BSP based development effort for SPL/U-Boot and Linux
  • https://gitlab.com/pine64-org/quartz-bsp
• Image CI pipeline aimed at developers
  • https://gitlab.com/pgwipeout/quartz64_ci/
• Rockchip U-Boot
  • https://github.com/rockchip-linux/u-boot
• Downstream rockchip-linux kernel tree
  • https://gitlab.com/pine64-org/quartz-bsp/rockchip-linux
• Tianocore EDK II port for UEFI on Quartz64
  • https://github.com/jaredmcneill/quartz64_uefi
• Mainline U-Boot Port by pgwipeout
  • https://gitlab.com/pgwipeout/u-boot-quartz64

Other

• Rockchip-SoC Patchwork Page
  • https://patchwork.kernel.org/project/linux-rockchip/list/
• Rockchip Kernel Mailing List Archive
  • https://lore.kernel.org/linux-rockchip/

Board/SoC Documentation

Booting

Boot Order

The RK3566 boot ROM will search for a valid ID BLOCK in the following order on the support boot media:

• SPI NOR flash
• SPI NAND flash
• SD-Card
• eMMC

... if this fails, the boot ROM will initialize the USB0 port and wait for a connection from the Rockchip flash/boot tools.

Bootloader Flashing

As per pgwipeout's commit message:

• Make a partition named uboot as partition number 1 at 8 MiB to 16 MiB
• dd if=idblock.bin of=/dev/<mmc/sd> seek=64
• dd if=uboot.img of=/dev/<mmc/sd>1