[PATCH v2 0/6] rockchip: rk3328: sync dts and add ROC-RK3328-CC board

Chen-Yu Tsai wens at kernel.org
Sun Apr 5 04:25:38 CEST 2020

From: Chen-Yu Tsai <wens at csie.org>

Hi everyone,

This is v2 of my ROC-RK3328-CC series. Changes from v1 are mainly
dropping the custom board target, and dealing with the pinmuxing
through proper use of DM regulators / GPIO / pinctrl in SPL.

This series adds proper support for Firefly / Libre Computer ROC-RK3328-CC
single board computer.

The ROC-RK3328-CC from Firefly and Libre Computer Project is a credit
card size development board based on the Rockchip RK3328 SoC, with:

  - 1/2/4 GB DDR4 DRAM
  - eMMC connector for optional module
  - micro SD card slot
  - 1 x USB 3.0 host port
  - 2 x USB 2.0 host port
  - 1 x USB 2.0 OTG port
  - HDMI video output
  - TRRS connector with audio and composite video output
  - gigabit Ethernet
  - consumer IR receiver
  - debug UART pins

Originally I started with Loic's patches, and syncing the device tree
files from Linux. That didn't get very far, with SPL failing to detect
the SD card. Examining the schematics and internal state of GRF and
GPIOs, I realized that the logic for the SD card power enable switch
is opposite that of what the SD card controller's SDMMC0_PWREN pin
would use. Instead, directly using the GPIO is required.

To deal with this, DM regulator and GPIO are enabled in SPL, and
various device nodes are marked with u-boot,dm-spl to have them work.
pinctrl properties are not stripped, so as to have the SDMMC0_PWREN
pin muxed over to GPIO.

Along the way, there are some clean-ups of existing dts files, moving
U-boot only features to -u-boot.dtsi files, and then a wholesale sync
from Linux. Only boards already existing in U-boot are synced. DT
binding header files are synced separately as there is already one
patch floating around. The DT sync also includes clean-up changes only
recently posted, and likely won't make it in for at least a few weeks.

Please have a look, and test if possible. I cc-ed a couple people that
showed interest in this board on mailing lists recently.


Chen-Yu Tsai (6):
  rockchip: dts: rk3328-evb: Move vcc5v0-host-xhci-drv to -u-boot.dtsi
  rockchip: dts: rk3328-evb: Move gmac2io related nodes to -u-boot.dtsi
  dt-bindings: clock: rk3328: sync from upstream Linux kernel
  dt-bindings: power: rk3328-power: sync from upstream Linux kernel
  rockchip: dts: rk3328: Sync device tree files from Linux
  rockchip: rk3328: Add support for ROC-RK3328-CC board

 arch/arm/dts/Makefile                         |    1 +
 arch/arm/dts/rk3328-evb-u-boot.dtsi           |   39 +
 arch/arm/dts/rk3328-evb.dts                   |  220 +--
 arch/arm/dts/rk3328-roc-cc-u-boot.dtsi        |   38 +
 .../{rk3328-rock64.dts => rk3328-roc-cc.dts}  |  135 +-
 arch/arm/dts/rk3328-rock64.dts                |  132 +-
 arch/arm/dts/rk3328.dtsi                      | 1420 +++++++++++------
 board/rockchip/evb_rk3328/MAINTAINERS         |    7 +
 configs/roc-cc-rk3328_defconfig               |  103 ++
 doc/README.rockchip                           |    4 +-
 include/dt-bindings/clock/rk3328-cru.h        |  212 +--
 include/dt-bindings/power/rk3328-power.h      |   19 +
 12 files changed, 1578 insertions(+), 752 deletions(-)
 create mode 100644 arch/arm/dts/rk3328-roc-cc-u-boot.dtsi
 copy arch/arm/dts/{rk3328-rock64.dts => rk3328-roc-cc.dts} (68%)
 create mode 100644 configs/roc-cc-rk3328_defconfig
 create mode 100644 include/dt-bindings/power/rk3328-power.h


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