u-boot.git/drivers/i2c, branch v2018.09

Convert CONFIG_SYS_I2C_DAVINCI to Kconfig

2018-08-17T19:43:38+00:00

This converts the following to Kconfig:
   CONFIG_SYS_I2C_DAVINCI

Signed-off-by: Adam Ford

kconfig: fix typo 'parition'

2018-08-17T13:22:35+00:00

Replaced misspelled words "parition"/"paritioning" (missing 't') in two
Kconfig files by correct words "partition"/"partitioning"

Signed-off-by: Simon Goldschmidt 
Reviewed-by: Philipp Tomsich

i2c: imx_lpi2c: add uclass api support

2018-08-06T12:28:23+00:00

Use uclass clk api to get per clk when CONFIG_CLK enabled.

Signed-off-by: Peng Fan 
Reviewed-by: Anatolij Gustschin

i2c-mux: pca954x: support pca9646 i2c switch

2018-08-06T12:28:20+00:00

Add the PCA9646 support, which is 2-wire bus switch and buffered 4-channel.

Signed-off-by: Peng Fan 
Reviewed-by: Anatolij Gustschin

rockchip: i2c: enable i2c controller for rk3066 and rk3188

2018-07-20T23:55:25+00:00

rk3066 and rk3188 has two I2C controller implementations.
Current I2C driver wan't work with legacy implementation.
Switching between controllers is performed using a bit inside
GFR_SOC_CON1 register. The bit setting is performed by pinctrl
driver. The patch ask pinctrl to do settings.

Signed-off-by: Alexander Kochetkov 
Acked-by: Philipp Tomsich 
Reviewed-by: Philipp Tomsich 
[fix warnings by including the rk3228 variant in the compatible-list]:
Signed-off-by: Philipp Tomsich

lpi2c: Add bus busy error handling

2018-07-12T09:09:42+00:00

When doing "i2c dev 4; i2c probe" with ENET daughter card connected
on iMX8QXP MEK board, we met a i2c bus busy issue, that the BBF of
lpi2c always show busy, but the master is idle, and stop is detected
(SDF set).

This patch addes a handling to re-init the lpi2c master for this
case. Then the issue can be worked around.

Signed-off-by: Ye Li 
Acked-by: Peng Fan 
Reviewed-by: Heiko Schocher

lpi2c: Fix bus stop problem in xfer

2018-07-12T09:09:23+00:00

In xfer function, both bus_i2c_read and bus_i2c_write will
send a STOP command.  This causes a problem when reading register
data from i2c device.

Generally two operations comprise the register data reading:
   1. Write the register address to i2c device.
      START | chip_addr | W | ACK | register_addr | ACK |

   2. Read the Data from i2c device.
      START | chip_addr | R | ACK | DATA          | NACK | STOP

The STOP command should happen at the end of the transfer, otherwise
we will always get data from register address 0

Signed-off-by: Ye Li 
Acked-by: Peng Fan 
Reviewed-by: Heiko Schocher

imx: lpi2c: fix clock issue when NACK detected

2018-07-12T09:09:07+00:00

For LPI2C IP, NACK is detected by the rising edge of the ninth clock.
In current uboot driver, once NACK is detected, it will reset and then
disable LPI2C master. As a result, we can never see the falling edge
of the ninth clock.

Signed-off-by: Gao Pan 
Signed-off-by: Peng Fan 
Reviewed-by: Heiko Schocher

imx_lpi2c: Update lpi2c driver to support imx8

2018-07-12T09:08:41+00:00

Add compatible string for i.MX8 and move imx_lpi2c.h from mx7ulp directory
to u-boot include directory as a common header file.

Signed-off-by: Ye Li 
Signed-off-by: Peng Fan 
Reviewed-by: Heiko Schocher

meson: use the clock driver

2018-06-19T11:31:47+00:00

Use the clk framework to initialize clocks from drivers that need them
instead of having hardcoded frequencies and initializations from board
code.

Signed-off-by: Beniamino Galvani 
Signed-off-by: Neil Armstrong