diff options
| author | Przemyslaw Marczak <p.marczak@samsung.com> | 2015-03-31 16:57:18 (GMT) |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-04-18 17:11:17 (GMT) |
| commit | c54473cb25968be53e6b47527d5970b03a3cf41d (patch) | |
| tree | 3bd25bfae1d777030122a441f585b20ba42a427f /arch | |
| parent | 705fcf4de40383a47dc92c4c9d7dbeb37a9d1104 (diff) | |
| download | u-boot-fsl-qoriq-c54473cb25968be53e6b47527d5970b03a3cf41d.tar.xz | |
dm: i2c: add i2c-gpio driver
This commit adds driver model support to software emulated i2c bus driver.
This driver supports kernel-style device tree bindings. Fdt properties in use:
- compatible - "i2c-gpio"
- gpios - data and clock GPIO pin phandles
- delay-us - micro seconds delay between GPIOs toggle operations,
which is 1/4 of I2C speed clock period.
Added:
- Config: CONFIG_DM_I2C_GPIO
- File: drivers/i2c/i2c-gpio.c
- File: doc/device-tree-bindings/i2c/i2c-gpio.txt
Driver base code is taken from: drivers/i2c/soft-i2c.c, changes:
- use "i2c-gpio" naming
- update comments style
- move preprocesor macros into functions
- add device tree support
- add driver model i2c support
- code cleanup,
- add Kconfig entry
Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Added braces in i2c_gpio_xfer() to fix style nit:
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions