From: Ying Zhang <b40...@freescale.com>
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 <b40...@freescale.com>
---
board/freescale/t208xrdb/t208xrdb.c | 7 +++++++
include/configs/T208xRDB.h | 11 +++++++++++
2 files changed, 18 insertions(+)
diff --git a/board/freescale/t208xrdb/t208xrdb.c
b/board/freescale/t208xrdb/t208xrdb.c
index 341453b..ad393df 100644
--- a/board/freescale/t208xrdb/t208xrdb.c
+++ b/board/freescale/t208xrdb/t208xrdb.c
@@ -19,6 +19,7 @@
#include <fm_eth.h>
#include "t208xrdb.h"
#include "cpld.h"
+#include "../common/vid.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -85,6 +86,12 @@ int board_early_init_r(void)
setup_portals();
#endif
+ /*
+ * 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");
return 0;
}
diff --git a/include/configs/T208xRDB.h b/include/configs/T208xRDB.h
index db6b42e..2e48fc8 100644
--- a/include/configs/T208xRDB.h
+++ b/include/configs/T208xRDB.h
@@ -449,6 +449,17 @@ unsigned long get_board_ddr_clk(void);
#define I2C_MUX_PCA_ADDR_SEC2 0x76 /* I2C bus multiplexer,secondary 2 */
#define I2C_MUX_CH_DEFAULT 0x8
+#define I2C_MUX_CH_VOL_MONITOR 0xa
+
+#define CONFIG_VID_FLS_ENV "t208xrdb_vdd_mv"
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_VID
+#endif
+#define CONFIG_VOL_MONITOR_IR36021_SET
+#define CONFIG_VOL_MONITOR_IR36021_READ
+/* The lowest and highest voltage allowed for T208xRDB */
+#define VDD_MV_MIN 819
+#define VDD_MV_MAX 1212
/*
* RapidIO
--
1.8.4.1
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