u-boot.git/drivers/i2c, branch v2017.05-rc1

i2c: Set default I2C bus number

2017-03-28T04:27:54Z

This patch allows using i2c commands (e.g. "i2c probe", "i2c md", etc) without the need to first select the bus number with e.g. "i2c dev 0". This is the "i2c" command behavior similar to the one from pre DM, where by default bus 0 was immediately accessible. Signed-off-by: Lukasz Majewski

i2c: ti: Update method to calculate psc, sscl and ssch I2C parameters

2017-03-28T04:27:42Z

This patch updates the way in which psc, sscl and ssch I2C parameters are calculated to be in sync with v4.9 Linux kernel SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826 in the ./drivers/i2c/busses/i2c-omap.c The previous method was causing several issues: - The internal I2C frequency (after prescaler) was far above recommended one (7 - 12 MHz [*]) - the current approach brings better noise suppression (as stated in Linux commit: SHA1: 84bf2c868f3ca996e5bb) - The values calculated (psc, sscl and ssch) were far from optimal, which caused on the test platform (AM57xx) the I2C0 SCL signal low time (Fast Mode) of ~1.0us (the standard requires > 1.3 us). [*] for AM57xx TRM SPRUHZ6G, Table 24,7 "HS I2C Register Values for Maximum I2C Bit Rates in I2C F/S, I2C HS Modes" Signed-off-by: Lukasz Majewski

i2c: ti: Update SCLH and SCLL to be in sync with v4.9 Linux kernel

2017-03-28T04:27:33Z

v4.9 Linux release: SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826 in the ./drivers/i2c/busses/i2c-omap.c recommends to use SCLH=5 and SCLL=7 values. This patch sets them to default. Signed-off-by: Lukasz Majewski

i2c: lpc32xx: Force consistent bus numbering

2017-03-28T04:27:20Z

Normally, this would probably be done by adding devicetree aliases to the main dtsi file for the lpc32xx and using bus->req_seq instead. Since we want to have consistent i2c numbering, we cannot force the bus->req_seq because. If for instance we have 3 buses numbered from 0 to 2 with i2c0 enabled, i2c1 disabled and i2c2 enabled; i2c2 can be selected using 'i2c dev 1' and 'i2c dev 2' commands because a bus can be probed using req_seq or seq interchangeably. Signed-off-by: Liam Beguin Signed-off-by: Sylvain Lemieux

i2c: lpc32xx: Move definitions to header file

2017-03-28T04:27:14Z

Since the lpc32xx i2c driver does not yet support the devicetree bindings, this structure is also needed by the board file as the hardware description is done there. Signed-off-by: Liam Beguin Signed-off-by: Sylvain Lemieux

i2c: lpc32xx: Remove note for DM conversation

2017-03-28T04:27:08Z

Removed note in the LPC32xx I2C driver for DM conversation. Signed-off-by: Sylvain Lemieux

i2c: lpc32xx: Add DM for lpc32xx I2C

2017-03-28T04:26:39Z

Adding DM specific wrapper functions and definitions. Signed-off-by: Liam Beguin Signed-off-by: Sylvain Lemieux

i2c: lpc32xx: Factor out i2c_adapter parameter

2017-03-28T04:26:30Z

This is part of the prep work for the migration to the driver model. It will enable the driver to support DM and non-DM configurations using the same functions. Signed-off-by: Liam Beguin Signed-off-by: Sylvain Lemieux

i2c: lpc32xx: Prepare compatibility functions

2017-03-28T04:26:16Z

This is part of the prep work for the migration to the driver model. Signed-off-by: Liam Beguin Signed-off-by: Sylvain Lemieux

i2c: lpc32xx: Rename probe function

2017-03-28T04:26:06Z

This is part of the prep work for the migration to the driver model. What used to be the probe function is now called probe_chip. Signed-off-by: Liam Beguin Signed-off-by: Sylvain Lemieux