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| author | Lubomir Popov <lpopov@mm-sol.com> | 2013-06-01 06:44:38 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-06-10 08:43:26 -0400 |
| commit | 960187ffa125b3938fec4b827bd9e8c04a204af8 (patch) | |
| tree | 88aa9ebc4eb88bcb3beaa28cfd33a36a997c2caa /doc/README.omap3 | |
| parent | 7f5eef93af92ed9efed7867d24b03fd6056a7404 (diff) | |
| download | u-boot-imx-960187ffa125b3938fec4b827bd9e8c04a204af8.zip u-boot-imx-960187ffa125b3938fec4b827bd9e8c04a204af8.tar.gz u-boot-imx-960187ffa125b3938fec4b827bd9e8c04a204af8.tar.bz2 | |
ARM: OMAP: I2C: New read, write and probe functions
New i2c_read, i2c_write and i2c_probe functions, tested on OMAP4
(4430/60/70), OMAP5 (5430) and AM335X (3359); should work on older
OMAPs and derivatives as well. The only anticipated exception would
be the OMAP2420, which shall require driver modification.
- Rewritten i2c_read to operate correctly with all types of chips
(old function could not read consistent data from some I2C slaves).
- Optimised i2c_write.
- New i2c_probe, performs write access vs read. The old probe could
hang the system under certain conditions (e.g. unconfigured pads).
- The read/write/probe functions try to identify unconfigured bus.
- Status functions now read irqstatus_raw as per TRM guidelines
(except for OMAP243X and OMAP34XX).
- Driver now supports up to I2C5 (OMAP5).
Signed-off-by: Lubomir Popov <lpopov@mm-sol.com>
Tested-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'doc/README.omap3')
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