Commit 5c2b9c61 authored by Tommaso Merciai's avatar Tommaso Merciai Committed by Greg Kroah-Hartman
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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: default avatarRichard Leitner <richard.leitner@linux.dev>
Signed-off-by: default avatarTommaso Merciai <tomm.merciai@gmail.com>
Link: https://lore.kernel.org/r/20220128181713.96856-1-tomm.merciai@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0a907ee9

drivers/usb/misc/usb251xb.c

+3 −1
Original line number Diff line number Diff line
@@ -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;