Hi,

i'd like to get U-Boot working on rockchip/rk3188(rock_defconfig). current as-is:

U-Boot SPL 2017.09-rc4-00009-ga0e80c9 (Sep 05 2017 - 23:47:57) Returning to boot ROM...

U-Boot 2017.09-rc4-00009-ga0e80c9 (Sep 05 2017 - 23:47:57 +0300)

Model: Radxa Rock DRAM: 2 GiB MMC: MMC Device 0 not found *** Warning - No MMC card found, using default environment

In: serial@20064000 Out: serial@20064000 Err: serial@20064000 Model: Radxa Rock Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 0 No MMC device available No MMC device available No ethernet found. missing environment variable: pxeuuid missing environment variable: bootfile Retrieving file: pxelinux.cfg/00000000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/0000000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/000000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/00000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/0000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/00 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/0 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/default-arm-rockchip No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/default-arm No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/default No ethernet found. Config file not found No ethernet found. No ethernet found. => mmc rescan No MMC device available => usb Unknown command 'usb' - try 'help' =>

So, being optimistic, i added compatible found from arch/arm/dts/rk3xxx.dtsi, included by rk3188:

diff --git a/drivers/mmc/rockchip_dw_mmc.c b/drivers/mmc/rockchip_dw_mmc.c index e7fcf89..a879fcd 100644 --- a/drivers/mmc/rockchip_dw_mmc.c +++ b/drivers/mmc/rockchip_dw_mmc.c @@ -160,6 +160,7 @@ static int rockchip_dwmmc_bind(struct udevice *dev)

static const struct udevice_id rockchip_dwmmc_ids[] = { { .compatible = "rockchip,rk3288-dw-mshc" }, + { .compatible = "rockchip,rk2928-dw-mshc" }, { } };

And it built w/no errors, but apparently dwmmc probe does fail w/-22:

U-Boot SPL 2017.09-rc4-00010-g1d12cc7 (Sep 06 2017 - 00:47:27) Returning to boot ROM...

U-Boot 2017.09-rc4-00010-g1d12cc7 (Sep 06 2017 - 00:47:27 +0300)

Model: Radxa Rock DRAM: 2 GiB MMC: dwmmc@10214000 - probe failed: -22

*** Warning - No MMC card found, using default environment

In: serial@20064000 Out: serial@20064000 Err: serial@20064000 Model: Radxa Rock Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 0 no mmc device at slot 0 MMC Device 1 not found no mmc device at slot 1 No ethernet found. missing environment variable: pxeuuid missing environment variable: bootfile Retrieving file: pxelinux.cfg/00000000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/0000000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/000000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/00000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/0000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/000 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/00 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/0 No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/default-arm-rockchip No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/default-arm No ethernet found. missing environment variable: bootfile Retrieving file: pxelinux.cfg/default No ethernet found. Config file not found No ethernet found. No ethernet found. => mmc rescan no mmc device at slot 0 => mmc list

=>

now i've "successfully" enabled usb, but it took like +30tries w/"usb reset" until the host ports succesfully found my usb mass storage, and sometimes it leaves the dwc2 otg controller in a state where "usb tree" will fault while printing out, and reset the board, so i'd rather have sdmmc working for now instead, as it is enabled already in the default config for the board.

Anyone w/clues about what's broken/missing? or patches for me to try?

-Artturi