u-boot.git/drivers/i2c, branch v2018.09-rc1

rockchip: i2c: enable i2c controller for rk3066 and rk3188

2018-07-20T23:55:25Z

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

2018-07-12T09:09:42Z

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

2018-07-12T09:09:23Z

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

2018-07-12T09:09:07Z

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

2018-07-12T09:08:41Z

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

2018-06-19T11:31:47Z

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

i2c: mvtwsi: disable i2c slave on Armada 38x

2018-06-07T12:19:55Z

Equivalent code that disables the hidden i2c0 slave already exists in the Turris Omnia platform specific code. But this hidden i2c0 slave that interferes the i2c bus is not board specific. Armada 38x SoCs and at least some Kirkwood variants are affected as well. Add code to disable this slave to the i2c bus driver to make it work on all affected hardware. Use the bind callback because we want this to always run at boot, regardless of whether U-Boot uses the i2c bus. Cc: Rabeeh Khoury Cc: Chris Packham Reviewed-by: Stefan Roese Reviewed-by: Heiko Schocher Signed-off-by: Baruch Siach

i2c: Drop CONFIG_SH_SH7734_I2C

2018-05-23T21:30:04Z

Last user of this driver went away in May 2017 in commit eb5ba3aefdf0f6c ("i2c: Drop use of CONFIG_I2C_HARD"). Signed-off-by: Tuomas Tynkkynen Acked-by: Heiko Schocher

i2c: Drop CONFIG_TSI108_I2C

2018-05-23T21:30:04Z

Last user of this driver went away in June 2015 in commit d928664f4101e24 ("powerpc: 74xx_7xx: remove 74xx_7xx cpu support") Signed-off-by: Tuomas Tynkkynen Acked-by: Heiko Schocher

i2c: rcar_i2c: Add DM and DT capable I2C driver

2018-05-20T10:06:54Z

Add derivative of the rcar_i2c driver which is capable of probing itself from DM and uses DT. Signed-off-by: Marek Vasut Cc: Heiko Schocher Cc: Nobuhiro Iwamatsu