Hi Masahiro,
On 3 February 2015 at 01:35, Masahiro Yamada yamada.m@jp.panasonic.com wrote:
Hi Simon,
On Tue, 3 Feb 2015 10:10:02 +0200 "Lubomir Popov" lpopov@mm-sol.com wrote:
Hi Simon,
Hi,
On 30 January 2015 at 10:56, Lubomir Popov lpopov@mm-sol.com wrote:
I2C chips do exist that require a write of some multi-byte data to occur in a single bus transaction (aka atomic transfer), otherwise either the write does not come into effect at all, or normal operation of internal circuitry cannot be guaranteed. The current implementation of the 'i2c write' command (transfer of multiple bytes from a memory buffer) in fact performs a separate transaction for each byte to be written and thus cannot support such types of I2C slave devices.
This patch provides an alternative by allowing 'i2c write' to execute the write transfer of the given number of bytes in a single bus transaction if the '-s' option is specified as a final command argument. Else the current re-addressing method is used.
Signed-off-by: Lubomir Popov l-popov@ti.com
Can we support "pagesize" property in Driver Model I2C?
The binding information is written in Documentation/devicetree/bindings/eeprom.txt of Linux Kernel.
If it is possible, it would help make the write access faster. (Sorry, I have not taken a close look.)
Perhaps, it may also satisfy Lubomir's demand ??
I think this is slightly different - some devices cannot support writes with more than one data value at a time - they require a separate address cycle before each data value.
Regards, Simon