MPC8568E-MDS: reset UCCs to use them reliably
In order to use GETH1 and GETH2 on the MPC8568E-MDS, we should reset
UCCs.
p.s Similar code exists in the Linux kernel board file (for capability
reasons with older U-Boots), but should be removed some day.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
diff --git a/board/freescale/mpc8568mds/bcsr.c b/board/freescale/mpc8568mds/bcsr.c
index aae0f98..791a50f 100644
--- a/board/freescale/mpc8568mds/bcsr.c
+++ b/board/freescale/mpc8568mds/bcsr.c
@@ -21,6 +21,8 @@
*/
#include <common.h>
+#include <asm/io.h>
+
#include "bcsr.h"
void enable_8568mds_duart()
@@ -54,3 +56,22 @@
bcsr[7] |= 0x01;
}
+
+#if defined(CONFIG_UEC_ETH1) || defined(CONFIG_UEC_ETH2)
+void reset_8568mds_uccs(void)
+{
+ volatile u8 *bcsr = (u8 *)(CFG_BCSR);
+
+ /* Turn off UCC1 & UCC2 */
+ out_8(&bcsr[8], in_8(&bcsr[8]) & ~BCSR_UCC1_GETH_EN);
+ out_8(&bcsr[9], in_8(&bcsr[9]) & ~BCSR_UCC2_GETH_EN);
+
+ /* Mode is RGMII, all bits clear */
+ out_8(&bcsr[11], in_8(&bcsr[11]) & ~(BCSR_UCC1_MODE_MSK |
+ BCSR_UCC2_MODE_MSK));
+
+ /* Turn UCC1 & UCC2 on */
+ out_8(&bcsr[8], in_8(&bcsr[8]) | BCSR_UCC1_GETH_EN);
+ out_8(&bcsr[9], in_8(&bcsr[9]) | BCSR_UCC2_GETH_EN);
+}
+#endif
diff --git a/board/freescale/mpc8568mds/bcsr.h b/board/freescale/mpc8568mds/bcsr.h
index aefd9bf..f7f70bc 100644
--- a/board/freescale/mpc8568mds/bcsr.h
+++ b/board/freescale/mpc8568mds/bcsr.h
@@ -90,6 +90,11 @@
7 Flash write protect
*/
+#define BCSR_UCC1_GETH_EN (0x1 << 7)
+#define BCSR_UCC2_GETH_EN (0x1 << 7)
+#define BCSR_UCC1_MODE_MSK (0x3 << 4)
+#define BCSR_UCC2_MODE_MSK (0x3 << 0)
+
/*BCSR Utils functions*/
void enable_8568mds_duart(void);
@@ -97,4 +102,8 @@
void disable_8568mds_flash_write(void);
void enable_8568mds_qe_mdio(void);
+#if defined(CONFIG_UEC_ETH1) || defined(CONFIG_UEC_ETH2)
+void reset_8568mds_uccs(void);
+#endif
+
#endif /* __BCSR_H_ */
diff --git a/board/freescale/mpc8568mds/mpc8568mds.c b/board/freescale/mpc8568mds/mpc8568mds.c
index 460cb1b..1aaecf3 100644
--- a/board/freescale/mpc8568mds/mpc8568mds.c
+++ b/board/freescale/mpc8568mds/mpc8568mds.c
@@ -109,6 +109,9 @@
enable_8568mds_duart();
enable_8568mds_flash_write();
+#if defined(CONFIG_UEC_ETH1) || defined(CONFIG_UEC_ETH2)
+ reset_8568mds_uccs();
+#endif
#if defined(CONFIG_QE) && !defined(CONFIG_eTSEC_MDIO_BUS)
enable_8568mds_qe_mdio();
#endif