On Mon, Jan 21, 2019 at 08:51:10AM +0000, Andre Przywara wrote:
> Hi,
>
> ....
>
> >>> Testing with A10 Gemei G9 Tablet, FEL mode is broken:
> >>>
> >>> a) With usb-boot via fel:
> >>>
> >>> I get following error/warning:
> >>> Loading Environment from FAT... Card did not respond to voltage select!
> >>>
> >>> => mmc list
> >>> mmc@1c0f000: 0
> >>> ### All commands below stalls for a bit (~2 seconds), but return nothing
> >>> => mmc info
> >>> => mmc dev 0
> >>> => mmc part
> >>>
> > Similar issue with A20 Olinuxino Lime2 revk with SPI.
> >
> > a) Fel mode usb-boot failure (cannot properly initialize sd / emmc)
> > b) SPI boot failure (cannot properly initialize sd / emmc)
> >
> > c) Regular SD-card boot works ok!
> > d) eMMC boot works ok!
>
> Can you please try whether the patch below fixes this? At least it worked
> for me with FEL booting my Pine64-LTS.
>
> Not totally happy with it, but it seems like we do a similar trick for
> I2C anyway, so ...
Yes, it fixes it.
Tested on A20-Olinuxino-Lime2-emmc.
PS. Comment regarding i2c looks a bit odd..
>
> Cheers,
> Andre
>
> ---
> board/sunxi/board.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/board/sunxi/board.c b/board/sunxi/board.c
> index ad14837291..e330367d1d 100644
> --- a/board/sunxi/board.c
> +++ b/board/sunxi/board.c
> @@ -208,6 +208,10 @@ enum env_location env_get_location(enum env_operation
> op, int prio)
> }
> #endif
>
> +#ifdef CONFIG_DM_MMC
> +static void mmc_pinmux_setup(int sdc);
> +#endif
> +
> /* add board specific code here */
> int board_init(void)
> {
> @@ -269,6 +273,17 @@ int board_init(void)
> i2c_init_board();
> #endif
>
> +#ifdef CONFIG_DM_MMC
> + /*
> + * Temporary workaround for enabling I2C clocks until proper sunxi DM
> + * clk, reset and pinctrl drivers land.
> + */
> + mmc_pinmux_setup(CONFIG_MMC_SUNXI_SLOT);
> +#if CONFIG_MMC_SUNXI_SLOT_EXTRA != -1
> + mmc_pinmux_setup(CONFIG_MMC_SUNXI_SLOT_EXTRA);
> +#endif
> +#endif /* CONFIG_DM_MMC */
> +
> /* Uses dm gpio code so do this here and not in i2c_init_board() */
> return soft_i2c_board_init();
> }
> --
> 2.14.5
>
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