diff options
| author |   Tommaso Merciai <tomm.merciai@gmail.com> | 2022-01-28 19:17:13 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-31 14:22:49 +0100 |
| commit | 5c2b9c61ae5d8ad0a196d33b66ce44543be22281 (patch) | |
| tree | 9feb21831b035387e0c07c4452a5f7f8c36a49fb /drivers/usb/misc | |
| parent | usb: ulpi: Call of_node_put correctly (diff) | |
| download | wireguard-linux-5c2b9c61ae5d8ad0a196d33b66ce44543be22281.tar.xz wireguard-linux-5c2b9c61ae5d8ad0a196d33b66ce44543be22281.zip | |
usb: usb251xb: add boost-up property support
Add support for boost-up register of usb251xb hub.
boost-up property control USB electrical drive strength
This register can be set:
- Normal mode -> 0x00
- Low -> 0x01
- Medium -> 0x10
- High -> 0x11
(Normal Default)
References:
- http://www.mouser.com/catalog/specsheets/2514.pdf p29
Reviewed-by: Richard Leitner <richard.leitner@linux.dev>
Signed-off-by: Tommaso Merciai <tomm.merciai@gmail.com>
Link: https://lore.kernel.org/r/20220128181713.96856-1-tomm.merciai@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/misc')
| -rw-r--r-- | drivers/usb/misc/usb251xb.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/misc/usb251xb.c b/drivers/usb/misc/usb251xb.c index 507deef1f709..04c4e3fed094 100644 --- a/drivers/usb/misc/usb251xb.c +++ b/drivers/usb/misc/usb251xb.c @@ -543,6 +543,9 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, if (of_property_read_u16_array(np, "language-id", &hub->lang_id, 1)) hub->lang_id = USB251XB_DEF_LANGUAGE_ID; + if (of_property_read_u8(np, "boost-up", &hub->boost_up)) + hub->boost_up = USB251XB_DEF_BOOST_UP; + cproperty_char = of_get_property(np, "manufacturer", NULL); strlcpy(str, cproperty_char ? : USB251XB_DEF_MANUFACTURER_STRING, sizeof(str)); @@ -584,7 +587,6 @@ static int usb251xb_get_ofdata(struct usb251xb *hub, * may be as soon as needed. */ hub->bat_charge_en = USB251XB_DEF_BATTERY_CHARGING_ENABLE; - hub->boost_up = USB251XB_DEF_BOOST_UP; hub->boost_57 = USB251XB_DEF_BOOST_57; hub->boost_14 = USB251XB_DEF_BOOST_14; hub->port_map12 = USB251XB_DEF_PORT_MAP_12; |