Re: [PATCH v3 0/6] arm64: dts: rockchip: Add ROCK 2A/2F, Sige1 and NanoPi Zero2

Hi list, Hi Jonas,

This series adds dt-bindings and initial device tree for the following
Rockchip RK3528A boards:
- Radxa ROCK 2A/2F
- ArmSoM Sige1
- FriendlyElec NanoPi Zero2

this only sub-related to this series: Is there any particular reason, why
we call the compatible "rockchip,rk3528" and not "rockchip,rk3528a"? From
what I can see all boards currently supported (and those in this series)
are having the RK3528A version of the SoC. I didn't follow the development
here, but there are differences - I did a quick compare of the datasheets
of those two SoC versions - it looks like RK3528 version has USB3-DRD
controller, while RK3528A has USB3 host-only controller. Also it seems to
have different video codec IPs and the DRAM controller additionally
supports LPDDR4X.
I guess it would be good to discuss this before this series is merged,
because re-naming *.dts files after they have been in a release is somewhat
impossible.

Regards,
Alex

The bt/wifi_reg_on pins are described in the device tree using
rfkill-gpio nodes.

Changes in v3:
- Rename led nodes to led-0/led-1
- Remove pinctrl* props from sdio0
- Collect a-b tags

Changes in v2:
- Limit sdmmc max-frequency to 100 MHz on ROCK 2A/2F
- Drop clock-output-names prop from rtc node on Sige1 and NanoPi Zero2
- Drop regulator-boot-on from usb 2.0 host regulators on Sige1
- Add bluetooth and wifi nodes on Sige1
- Collect t-b tag for NanoPi Zero2

These boards can be booted from emmc or sd-card using the U-Boot 2025.07
generic-rk3528 target or work-in-progress patches for these boards [1].

For working bluetooth on ArmSoM Sige1 the patch "arm64: dts: rockchip:
Fix UART DMA support for RK3528" [2] is required.

[1] https://source.denx.de/u-boot/contributors/kwiboo/u-boot/-/commits/rk3528
[2] https://lore.kernel.org/r/20250709210831.3170458-1-jonas@kwiboo.se (local)

Jonas Karlman (6):
   dt-bindings: arm: rockchip: Add Radxa ROCK 2A/2F
   arm64: dts: rockchip: Add Radxa ROCK 2A/2F
   dt-bindings: arm: rockchip: Add ArmSoM Sige1
   arm64: dts: rockchip: Add ArmSoM Sige1
   dt-bindings: arm: rockchip: Add FriendlyElec NanoPi Zero2
   arm64: dts: rockchip: Add FriendlyElec NanoPi Zero2

  .../devicetree/bindings/arm/rockchip.yaml     |  17 +
  arch/arm64/boot/dts/rockchip/Makefile         |   4 +
  .../boot/dts/rockchip/rk3528-armsom-sige1.dts | 465 ++++++++++++++++++
  .../boot/dts/rockchip/rk3528-nanopi-zero2.dts | 340 +++++++++++++
  .../boot/dts/rockchip/rk3528-rock-2.dtsi      | 293 +++++++++++
  .../boot/dts/rockchip/rk3528-rock-2a.dts      |  82 +++
  .../boot/dts/rockchip/rk3528-rock-2f.dts      |  10 +
  7 files changed, 1211 insertions(+)
  create mode 100644 arch/arm64/boot/dts/rockchip/rk3528-armsom-sige1.dts
  create mode 100644 arch/arm64/boot/dts/rockchip/rk3528-nanopi-zero2.dts
  create mode 100644 arch/arm64/boot/dts/rockchip/rk3528-rock-2.dtsi
  create mode 100644 arch/arm64/boot/dts/rockchip/rk3528-rock-2a.dts
  create mode 100644 arch/arm64/boot/dts/rockchip/rk3528-rock-2f.dts