powerpc/t208xqds: VID support
The fuse status register provides the values from on-chip
voltage ID efuses programmed at the factory.
These values define the voltage requirements for
the chip. u-boot reads FUSESR and translates the values
into the appropriate commands to set the voltage output
value of an external voltage regulator.
Signed-off-by: Ying Zhang <b40530@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/t208xqds/t208xqds.c b/board/freescale/t208xqds/t208xqds.c
index 5c470c3..7c89cd5 100644
--- a/board/freescale/t208xqds/t208xqds.c
+++ b/board/freescale/t208xqds/t208xqds.c
@@ -20,6 +20,7 @@
#include "../common/qixis.h"
#include "../common/vsc3316_3308.h"
+#include "../common/vid.h"
#include "t208xqds.h"
#include "t208xqds_qixis.h"
@@ -86,6 +87,11 @@
return 0;
}
+int i2c_multiplexer_select_vid_channel(u8 channel)
+{
+ return select_i2c_ch_pca9547(channel);
+}
+
int brd_mux_lane_to_slot(void)
{
ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
@@ -358,6 +364,13 @@
/* Disable remote I2C connection to qixis fpga */
QIXIS_WRITE(brdcfg[5], QIXIS_READ(brdcfg[5]) & ~BRDCFG5_IRE);
+ /*
+ * Adjust core voltage according to voltage ID
+ * This function changes I2C mux to channel 2.
+ */
+ if (adjust_vdd(0))
+ printf("Warning: Adjusting core voltage failed.\n");
+
brd_mux_lane_to_slot();
select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);