i2c: nomadik: auto-calculate slave setup time

The Nomadik I2C controller needs to have the slave set-up time
configured based off the clock used to drive the I2C bus block.
Currently this is done with static assignments assuming that the
block is clocked 48MHz which is pretty likely to be bug-prone.
Calculate the SLSU from the equation given in the datasheet
instead.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

1 files changed, 0 insertions, 5 deletions

diff --git a/include/linux/platform_data/i2c-nomadik.h b/include/linux/platform_data/i2c-nomadik.h
index 3a8be9cdc95c..8681893f7b66 100644
--- a/include/linux/platform_data/i2c-nomadik.h
+++ b/include/linux/platform_data/i2c-nomadik.h
@@ -18,10 +18,6 @@ enum i2c_freq_mode {
 /**
  * struct nmk_i2c_controller - client specific controller configuration
  * @clk_freq:   clock frequency for the operation mode
- * @slsu:       Slave data setup time in ns.
- *              The needed setup time for three modes of operation
- *              are 250ns, 100ns and 10ns respectively thus leading
- *              to the values of 14, 6, 2 for a 48 MHz i2c clk
  * @tft:        Tx FIFO Threshold in bytes
  * @rft:        Rx FIFO Threshold in bytes
  * @timeout     Slave response timeout(ms)
@@ -29,7 +25,6 @@ enum i2c_freq_mode {
  */
 struct nmk_i2c_controller {
         u32             clk_freq;
-        unsigned short  slsu;
         unsigned char   tft;
         unsigned char   rft;
         int timeout;