mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
ad736c1a4d
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Link: https://lore.kernel.org/r/20200719175512.60745-1-grandmaster@al2klimov.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
68 lines
1.6 KiB
ReStructuredText
68 lines
1.6 KiB
ReStructuredText
Kernel driver sht21
|
|
===================
|
|
|
|
Supported chips:
|
|
|
|
* Sensirion SHT21
|
|
|
|
Prefix: 'sht21'
|
|
|
|
Addresses scanned: none
|
|
|
|
Datasheet: Publicly available at the Sensirion website
|
|
|
|
https://www.sensirion.com/file/datasheet_sht21
|
|
|
|
|
|
|
|
* Sensirion SHT25
|
|
|
|
Prefix: 'sht25'
|
|
|
|
Addresses scanned: none
|
|
|
|
Datasheet: Publicly available at the Sensirion website
|
|
|
|
https://www.sensirion.com/file/datasheet_sht25
|
|
|
|
|
|
|
|
Author:
|
|
|
|
Urs Fleisch <urs.fleisch@sensirion.com>
|
|
|
|
Description
|
|
-----------
|
|
|
|
The SHT21 and SHT25 are humidity and temperature sensors in a DFN package of
|
|
only 3 x 3 mm footprint and 1.1 mm height. The difference between the two
|
|
devices is the higher level of precision of the SHT25 (1.8% relative humidity,
|
|
0.2 degree Celsius) compared with the SHT21 (2.0% relative humidity,
|
|
0.3 degree Celsius).
|
|
|
|
The devices communicate with the I2C protocol. All sensors are set to the same
|
|
I2C address 0x40, so an entry with I2C_BOARD_INFO("sht21", 0x40) can be used
|
|
in the board setup code.
|
|
|
|
sysfs-Interface
|
|
---------------
|
|
|
|
temp1_input
|
|
- temperature input
|
|
|
|
humidity1_input
|
|
- humidity input
|
|
eic
|
|
- Electronic Identification Code
|
|
|
|
Notes
|
|
-----
|
|
|
|
The driver uses the default resolution settings of 12 bit for humidity and 14
|
|
bit for temperature, which results in typical measurement times of 22 ms for
|
|
humidity and 66 ms for temperature. To keep self heating below 0.1 degree
|
|
Celsius, the device should not be active for more than 10% of the time,
|
|
e.g. maximum two measurements per second at the given resolution.
|
|
|
|
Different resolutions, the on-chip heater, and using the CRC checksum
|
|
are not supported yet.
|