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-rw-r--r--common/cmd_i2c.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
index c272b0dd4..d913e1366 100644
--- a/common/cmd_i2c.c
+++ b/common/cmd_i2c.c
@@ -132,6 +132,14 @@ DECLARE_GLOBAL_DATA_PTR;
#define DISP_LINE_LEN 16
+/* implement possible board specific board init */
+void __def_i2c_init_board(void)
+{
+ return;
+}
+void i2c_init_board(void)
+ __attribute__((weak, alias("__def_i2c_init_board")));
+
/* TODO: Implement architecture-specific get/set functions */
unsigned int __def_i2c_get_bus_speed(void)
{
@@ -1541,6 +1549,8 @@ int i2x_mux_select_mux(int bus)
mux = dev->mux;
while (mux != NULL) {
+ /* do deblocking on each level of mux, before mux config */
+ i2c_init_board();
if (i2c_write(mux->chip, 0, 0, &mux->channel, 1) != 0) {
printf ("Error setting Mux: chip:%x channel: \
%x\n", mux->chip, mux->channel);
@@ -1548,6 +1558,8 @@ int i2x_mux_select_mux(int bus)
}
mux = mux->next;
}
+ /* do deblocking on each level of mux and after mux config */
+ i2c_init_board();
return 0;
}
#endif /* CONFIG_I2C_MUX */