On 15/04/17 20:05, Tony Lindgren wrote:
> The idle mode needs to be only disabled for UTMIAUTOIDLE while
> ULPIAUTOIDLE can be enabled.
>
> This matches the TLL_CHANNEL_CONF_i register configuration for ehci-tll
> in the Motorola Linux kernel tree for Wrigley 3G LTE modem on droid 4
> and the modem still stays responsive.
>
> 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 | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> 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
> @@ -373,12 +373,13 @@ int omap_tll_init(struct usbhs_omap_platform_data *pdata)
> } else if (pdata->port_mode[i] ==
> OMAP_EHCI_PORT_MODE_TLL) {
> /*
> - * Disable AutoIdle, BitStuffing
> - * and use SDR Mode
> + * Disable UTMI AutoIdle, BitStuffing
> + * and use SDR Mode. Enable ULPI AutoIdle.
> */
> reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
> | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
> reg |= OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF;
> + reg |= OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE;
> } else if (pdata->port_mode[i] ==
> OMAP_EHCI_PORT_MODE_HSIC) {
> /*
>
cheers,
-roger
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