mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-25 02:09:42 +00:00
![Alexander A. Klimov](/assets/img/avatar_default.png)
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/20200708194400.22213-1-grandmaster@al2klimov.de Signed-off-by: Mark Brown <broonie@kernel.org>
39 lines
1.3 KiB
ReStructuredText
39 lines
1.3 KiB
ReStructuredText
===========================
|
|
Kernel driver spi-sc18is602
|
|
===========================
|
|
|
|
Supported chips:
|
|
|
|
* NXP SI18IS602/602B/603
|
|
|
|
Datasheet: https://www.nxp.com/documents/data_sheet/SC18IS602_602B_603.pdf
|
|
|
|
Author:
|
|
Guenter Roeck <linux@roeck-us.net>
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
This driver provides connects a NXP SC18IS602/603 I2C-bus to SPI bridge to the
|
|
kernel's SPI core subsystem.
|
|
|
|
The driver does not probe for supported chips, since the SI18IS602/603 does not
|
|
support Chip ID registers. You will have to instantiate the devices explicitly.
|
|
Please see Documentation/i2c/instantiating-devices.rst for details.
|
|
|
|
|
|
Usage Notes
|
|
-----------
|
|
|
|
This driver requires the I2C adapter driver to support raw I2C messages. I2C
|
|
adapter drivers which can only handle the SMBus protocol are not supported.
|
|
|
|
The maximum SPI message size supported by SC18IS602/603 is 200 bytes. Attempts
|
|
to initiate longer transfers will fail with -EINVAL. EEPROM read operations and
|
|
similar large accesses have to be split into multiple chunks of no more than
|
|
200 bytes per SPI message (128 bytes of data per message is recommended). This
|
|
means that programs such as "cp" or "od", which automatically use large block
|
|
sizes to access a device, can not be used directly to read data from EEPROM.
|
|
Programs such as dd, where the block size can be specified, should be used
|
|
instead.
|