On 15/04/17 20:05, Tony Lindgren wrote:
> Commit 16fa3dc75c22 ("mfd: omap-usb-tll: HOST TLL platform driver")
> added support for USB TLL, but uses OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF
> bit the wrong way. The comments in the code are correct, but the inverted
> use of OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF causes the register to be
> enabled instead of disabled unlike what the comments say.
>
> Without this change the Wrigley 3G LTE modem on droid 4 EHCI bus can
> be only pinged few times before it stops responding.
>
> Fixes: 16fa3dc75c22 ("mfd: omap-usb-tll: HOST TLL platform driver")
> Cc: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
> Cc: Keshava Munegowda <keshava_mgowda@xxxxxx>
> Cc: Marcel Partap <mpartap@xxxxxxx>
> Cc: Michael Scott <michael.scott@xxxxxxxxxx>
> Cc: Roger Quadros <rogerq@xxxxxx>
> Cc: Sebastian Reichel <sre@xxxxxxxxxx>
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Acked-by: Roger Quadros <rogerq@xxxxxx>
> ---
> drivers/mfd/omap-usb-tll.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mfd/omap-usb-tll.c b/drivers/mfd/omap-usb-tll.c
> --- a/drivers/mfd/omap-usb-tll.c
> +++ b/drivers/mfd/omap-usb-tll.c
> @@ -377,8 +377,8 @@ int omap_tll_init(struct usbhs_omap_platform_data *pdata)
> * and use SDR Mode
> */
> reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
> - | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF
> | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
> + reg |= OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF;
> } else if (pdata->port_mode[i] ==
> OMAP_EHCI_PORT_MODE_HSIC) {
> /*
>
cheers,
-roger
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