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

Chen-Yu Tsai
2020-03-27T17:44:00Z

Hi,

On Fri, Mar 27, 2020 at 11:07 PM Kurt Miller <kurt@intricatesoftware.com> wrote:
>
> On Fri, 2020-03-27 at 12:41 +0800, Chen-Yu Tsai wrote:
> > From: Chen-Yu Tsai <wens@csie.org>
> >
> > Hi everyone,
> >
> > 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.
> >
> > Thus this series creates a special target for this board to handle
> > muxing this specific pin to GPIO state. The GPIO is left in input mode,
> > letting the external pull-down work its magic.
> >
> > 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.
> >
>
> Thank you for updating the dts for rk3328. I have Rock64 v2 and v3
> boards and have tested your patchset with OpenBSD-current. The v2 board
> is working and I have not noticed any regressions. The v3 board prior
> to your patchset was not booting and continues to not boot.
>
> U-Boot TPL 2020.04-rc3-00172-gaf827140e5-dirty (Mar 27 2020 - 09:44:24)
> LPDDR3, 800MHz
> BW=32 Col=11 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=4096MB
> Trying to boot from BOOTROM
> Returning to boot ROM...
>
> U-Boot SPL 2020.04-rc3-00172-gaf827140e5-dirty (Mar 27 2020 - 09:44:24 -0400)
> Trying to boot from MMC1
> Card did not respond to voltage select!
> spl: mmc init failed with error: -95
> Trying to boot from MMC2
> Card did not respond to voltage select!
> spl: mmc init failed with error: -95
> SPL: failed to boot from all boot devices
> ### ERROR ### Please RESET the board ###
>
> The Rock64 v3 board issues are unrelated to your patch set, but I
> believe it needs a similar approach as ROC-RK3328-CC. Here is some
> info previously posted regarding this:
>
> https://marc.info/?t=155751506500001&r=1&w=2

So based on the changes from Pine64, it looks like v3 follows a similar
design as the ROC-RK3328-CC, that is use the SDMMC0_PWREN pin to control
power to the SD card. On the Rock64 v3, there's no external pull-down,
but the internal pull-down might be enough...

You could try setting the target to ROC-RK3328-CC through menuconfig
after you use the defconfig for rock64 and see if that works for you.

ChenYu

> Regards,
> -Kurt
>
>
> > Regards
> > ChenYu
> >
> >
> > 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 | 17 +
> > .../{rk3328-rock64.dts => rk3328-roc-cc.dts} | 135 +-
> > arch/arm/dts/rk3328-rock64.dts | 132 +-
> > arch/arm/dts/rk3328.dtsi | 1420 +++++++++++------
> > arch/arm/mach-rockchip/rk3328/Kconfig | 8 +
> > board/firefly/roc-cc-rk3328/Kconfig | 24 +
> > board/firefly/roc-cc-rk3328/MAINTAINERS | 7 +
> > board/firefly/roc-cc-rk3328/Makefile | 1 +
> > board/firefly/roc-cc-rk3328/board.c | 38 +
> > configs/roc-cc-rk3328_defconfig | 97 ++
> > doc/README.rockchip | 4 +-
> > include/dt-bindings/clock/rk3328-cru.h | 212 +--
> > include/dt-bindings/power/rk3328-power.h | 19 +
> > 16 files changed, 1622 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 board/firefly/roc-cc-rk3328/Kconfig
> > create mode 100644 board/firefly/roc-cc-rk3328/MAINTAINERS
> > create mode 100644 board/firefly/roc-cc-rk3328/Makefile
> > create mode 100644 board/firefly/roc-cc-rk3328/board.c
> > create mode 100644 configs/roc-cc-rk3328_defconfig
> > create mode 100644 include/dt-bindings/power/rk3328-power.h
> >
>