| Message ID | 20200123184826.116850-1-sjg@chromium.org |
|---|---|
| Headers | show |
| Series | i2c: designware_ic2: Improvements to timing and general cleanup | expand |
Hello Simon, Am 23.01.2020 um 19:48 schrieb Simon Glass: > This series updates the Designware I2C driver to support reading its > timing from the device tree and handling it in units of nanoseconds > instead of clock cycles. > > A new function converts from nanoseconds to the units used by the I2C > controller and makes sure that the requested bus speed is not exceeded. > This is more accurate than the existing method. > > The series includes a few smaller clean-ups in the same driver. > > In addition the v2 series adds enums for i2c speed and updates drivers to > use them. > > There is currently an existing configuration method used just for a few > x86 boards (Baytrail). This method is retained but it should be removed in > favour of using the device tree. I have not done this in this series since > I am not sure of the timings to use. > > Changes in v3: > - Fix the address of comp_param1 by adding a gap > - Drop note about moving to driver model > - Use ARRAY_SIZE() for i2c_specs bounds check > - Add new patch with support for fast-plus speed > - Add new patch to move dw_i2c_speed_config to header > - Add new patch to separate out the speed calculation > - Add new patch to do more in the probe() method > > Changes in v2: > - Fix 'previde' typo > - Add a few more clean-up patches for i2c > > Simon Glass (23): > i2c: designware_i2c: Add more registers > i2c: designware_i2c: Don't allow changing IC_CLK > i2c: designware_i2c: Include clk.h in the header file > i2c: designware_i2c: Rename 'max' speed to 'high' speed > i2c: designware_i2c: Use an enum for selected speed mode > i2c: designware_i2c: Use an accurate bus clock instead of MHz > i2c: designware_i2c: Bring in the binding file > i2c: designware_i2c: Read device-tree properties > i2c: designware_i2c: Drop scl_sda_cfg parameter > i2c: designware_i2c: Put hold config in a struct > i2c: designware_i2c: Rewrite timing calculation > i2c: designware_i2c: Add spike supression > i2c: Add enums for i2c speed and address size > i2c: ast_i2c: Update to use standard enums for speed > i2c: designware_i2c: Update to use standard enums for speed > i2c: kona_i2c: Update to use standard enums for speed > i2c: omap: Update to use standard enums for speed > i2c: stm32: Update to use standard enums for speed > i2c: Update drivers to use enum for speed > i2c: designware_i2c: Add support for fast-plus speed > i2c: designware_i2c: Move dw_i2c_speed_config to header > i2c: designware_i2c: Separate out the speed calculation > i2c: designware_i2c: Do more in the probe() method > > .../i2c/i2c-designware.txt | 73 +++++ > drivers/i2c/ast_i2c.c | 2 +- > drivers/i2c/ast_i2c.h | 2 - > drivers/i2c/designware_i2c.c | 300 ++++++++++++++---- > drivers/i2c/designware_i2c.h | 73 ++++- > drivers/i2c/designware_i2c_pci.c | 4 +- > drivers/i2c/exynos_hs_i2c.c | 5 +- > drivers/i2c/fsl_i2c.c | 3 +- > drivers/i2c/i2c-cdns.c | 2 +- > drivers/i2c/i2c-uclass.c | 12 +- > drivers/i2c/i2c-uniphier-f.c | 2 +- > drivers/i2c/i2c-uniphier.c | 2 +- > drivers/i2c/imx_lpi2c.c | 8 +- > drivers/i2c/kona_i2c.c | 28 +- > drivers/i2c/mv_i2c.c | 4 +- > drivers/i2c/mvtwsi.c | 5 +- > drivers/i2c/omap24xx_i2c.c | 5 +- > drivers/i2c/omap24xx_i2c.h | 4 - > drivers/i2c/rcar_i2c.c | 2 +- > drivers/i2c/rcar_iic.c | 2 +- > drivers/i2c/s3c24x0_i2c.c | 5 +- > drivers/i2c/sandbox_i2c.c | 3 +- > drivers/i2c/stm32f7_i2c.c | 43 +-- > include/i2c.h | 26 ++ > 24 files changed, 454 insertions(+), 161 deletions(-) > create mode 100644 doc/device-tree-bindings/i2c/i2c-designware.txt Applied the hole series to u-boot-i2c master. Thanks! bye, Heiko