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-rw-r--r--README10
1 files changed, 10 insertions, 0 deletions
diff --git a/README b/README
index a9c98f2..c9fb284 100644
--- a/README
+++ b/README
@@ -1495,6 +1495,16 @@ The following options need to be configured:
#define I2C_DELAY udelay(2)
+ CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA
+
+ If your arch supports the generic GPIO framework (asm/gpio.h),
+ then you may alternatively define the two GPIOs that are to be
+ used as SCL / SDA. Any of the previous I2C_xxx macros will
+ have GPIO-based defaults assigned to them as appropriate.
+
+ You should define these to the GPIO value as given directly to
+ the generic GPIO functions.
+
CONFIG_SYS_I2C_INIT_BOARD
When a board is reset during an i2c bus transfer