[U-Boot] [PATCH] axs103: add support of generic OHCI USB 1.1 controller

[Marek Vasut <marex@denx.de>]

On Wednesday, December 16, 2015 at 05:05:15 PM, Alexey Brodkin wrote:
> This commit adds support of USB 1.1 storage media on AXS103 board.
> For some yet unknown reason USB 2.0 doesn't work on AXS103 board issuing
> messages like this:
> ------------------------>8-------------------
> AXS# usb start
> starting USB...
> USB0:   USB EHCI 1.00
> scanning bus 0 for devices... EHCI timed out on TD - token=0x80008c80
> unable to get device descriptor (error=-1)
> 1 USB Device(s) found
> ------------------------>8-------------------

Try defining CONFIG_EHCI_IS_TDI , that _might_ help.

> As a work-around we're falling back to USB 1.1.
> Indeed it is much slower but at least USB storage devices are usable on
> AXS103.
> 
> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
> Cc: Marek Vasut <marex@denx.de>
> Cc: Simon Glass <sjg@chromium.org>
> ---
>  arch/arc/dts/axs10x.dts  | 6 ++++++
>  configs/axs103_defconfig | 3 +--
>  include/configs/axs101.h | 6 ++++++
>  3 files changed, 13 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arc/dts/axs10x.dts b/arch/arc/dts/axs10x.dts
> index 80e6d6b..391d067 100644
> --- a/arch/arc/dts/axs10x.dts
> +++ b/arch/arc/dts/axs10x.dts
> @@ -48,4 +48,10 @@
>  		reg = < 0xe0040000 0x100 >;
>  		interrupts = < 8 >;
>  	};
> +
> +	ohci at 0xe0060000 {
> +		compatible = "generic-ohci";
> +		reg = < 0xe0060000 0x100 >;
> +		interrupts = < 8 >;
> +	};
>  };
> diff --git a/configs/axs103_defconfig b/configs/axs103_defconfig
> index 3c65c83..a208a27 100644
> --- a/configs/axs103_defconfig
> +++ b/configs/axs103_defconfig
> @@ -21,7 +21,6 @@ CONFIG_ETH_DESIGNWARE=y
>  CONFIG_SYS_NS16550=y
>  CONFIG_USB=y
>  CONFIG_DM_USB=y
> -CONFIG_USB_EHCI_HCD=y
> -CONFIG_USB_EHCI_GENERIC=y
> +CONFIG_USB_OHCI_GENERIC=y
>  CONFIG_USB_STORAGE=y
>  CONFIG_USE_PRIVATE_LIBGCC=y
> diff --git a/include/configs/axs101.h b/include/configs/axs101.h
> index 650d97d..c92cca2 100644
> --- a/include/configs/axs101.h
> +++ b/include/configs/axs101.h
> @@ -105,6 +105,12 @@
>  #define CONFIG_DW_AUTONEG
> 
>  /*
> + * USB 1.1 configuration
> + */
> +#define CONFIG_USB_OHCI_NEW
> +#define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS 1
> +
> +/*
>   * Commands still not supported in Kconfig
>   */
>  #define CONFIG_CMD_FAT