From: Tommaso Merciai <tomm.merciai@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: tomm.merciai@gmail.com, linuxfancy@googlegroups.com,
Richard Leitner <richard.leitner@skidata.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3] usb: usb251xb: add boost-up property support
Date: Fri, 28 Jan 2022 19:17:13 +0100 [thread overview]
Message-ID: <20220128181713.96856-1-tomm.merciai@gmail.com> (raw)
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
Signed-off-by: Tommaso Merciai <tomm.merciai@gmail.com>
---
Changes since v1:
- Fix patch as suggested by RLeitner
Changes since v2:
- Fix commit body as suggested by Shtylyov
- Fix commit msg
- Fix patch as suggested by RLeitner and Shtylyov
drivers/usb/misc/usb251xb.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
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;
--
2.25.1
next reply other threads:[~2022-01-28 18:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-28 18:17 Tommaso Merciai [this message]
2022-01-29 22:04 ` [PATCH v3] usb: usb251xb: add boost-up property support Richard Leitner
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