i2c: axxia: Add I2C driver for AXM55xx

Add I2C bus driver for the controller found in the LSI Axxia family SoCs. The
driver implements 10-bit addressing and SMBus transfer modes via emulation
(including SMBus block data read).

Signed-off-by: Anders Berg <anders.berg@avagotech.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 1f3b9cb1faa7..e1d491b0b9c9 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -337,6 +337,17 @@ config I2C_AU1550
           This driver can also be built as a module.  If so, the module
           will be called i2c-au1550.
 
+config I2C_AXXIA
+        tristate "Axxia I2C controller"
+        depends on ARCH_AXXIA || COMPILE_TEST
+        default ARCH_AXXIA
+        help
+          Say yes if you want to support the I2C bus on Axxia platforms.
+
+          Please note that this controller is limited to transfers of maximum
+          255 bytes in length. Any attempt to to a larger transfer will return
+          an error.
+
 config I2C_BCM2835
         tristate "Broadcom BCM2835 I2C controller"
         depends on ARCH_BCM2835