X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=common%2Fcmd_i2c.c;h=d913e13665b41728fbbd953c17db5c7ae0ac1026;hb=7fb3e7a2d64b902e423c9e5a3aedc1f4179ac27d;hp=c272b0dd4f7dda1782c2abe8b24cff299e0f99ee;hpb=d75c2a3d7f34ff1eb9920ad72483cff7cb6d358f;p=u-boot

diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
index c272b0dd4f..d913e13665 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 */