[U-Boot-Users] [PATCH] PPC4xx: Add MII mode support to the EMAC RGMII Bridge
Grant Erickson
gerickson at nuovations.com
Tue Jul 8 17:35:00 CEST 2008
This patch adds support for placing the RGMII bridge on the
PPC405EX(r) into MII/GMII mode and allows a board-specific
configuration to specify the bridge mode at compile-time.
Signed-off-by: Grant Erickson <gerickson at nuovations.com>
---
cpu/ppc4xx/4xx_enet.c | 80 ++++++++++++++++++++++++++++++++++++++------
include/configs/kilauea.h | 1 +
include/configs/makalu.h | 1 +
include/ppc4xx_enet.h | 16 ++++++++-
4 files changed, 86 insertions(+), 12 deletions(-)
diff --git a/cpu/ppc4xx/4xx_enet.c b/cpu/ppc4xx/4xx_enet.c
index c40e0ca..638e155 100644
--- a/cpu/ppc4xx/4xx_enet.c
+++ b/cpu/ppc4xx/4xx_enet.c
@@ -465,30 +465,88 @@ int ppc_4xx_eth_setup_bridge(int devnum, bd_t * bis)
#if defined(CONFIG_405EX)
int ppc_4xx_eth_setup_bridge(int devnum, bd_t * bis)
{
- u32 gmiifer = 0;
+ u32 rgmiifer = 0;
/*
- * Right now only 2*RGMII is supported. Please extend when needed.
- * sr - 2007-09-19
+ * The 405EX(r)'s RGMII bridge can operate in one of several
+ * modes, only one of which (2 x RGMII) allows the
+ * simultaneous use of both EMACs on the 405EX.
*/
- switch (1) {
- case 1:
+
+ switch (CONFIG_EMAC_PHY_MODE) {
+
+ case EMAC_PHY_MODE_NONE:
+ /* No ports */
+ rgmiifer |= RGMII_FER_DIS << 0;
+ rgmiifer |= RGMII_FER_DIS << 4;
+ out_be32((void *)RGMII_FER, rgmiifer);
+ bis->bi_phymode[0] = BI_PHYMODE_NONE;
+ bis->bi_phymode[1] = BI_PHYMODE_NONE;
+ break;
+ case EMAC_PHY_MODE_NONE_RGMII:
+ /* 1 x RGMII port on channel 0 */
+ rgmiifer |= RGMII_FER_RGMII << 0;
+ rgmiifer |= RGMII_FER_DIS << 4;
+ out_be32((void *)RGMII_FER, rgmiifer);
+ bis->bi_phymode[0] = BI_PHYMODE_RGMII;
+ bis->bi_phymode[1] = BI_PHYMODE_NONE;
+ break;
+ case EMAC_PHY_MODE_RGMII_NONE:
+ /* 1 x RGMII port on channel 1 */
+ rgmiifer |= RGMII_FER_DIS << 0;
+ rgmiifer |= RGMII_FER_RGMII << 4;
+ out_be32((void *)RGMII_FER, rgmiifer);
+ bis->bi_phymode[0] = BI_PHYMODE_NONE;
+ bis->bi_phymode[1] = BI_PHYMODE_RGMII;
+ break;
+ case EMAC_PHY_MODE_RGMII_RGMII:
/* 2 x RGMII ports */
- out_be32((void *)RGMII_FER, 0x00000055);
+ rgmiifer |= RGMII_FER_RGMII << 0;
+ rgmiifer |= RGMII_FER_RGMII << 4;
+ out_be32((void *)RGMII_FER, rgmiifer);
bis->bi_phymode[0] = BI_PHYMODE_RGMII;
bis->bi_phymode[1] = BI_PHYMODE_RGMII;
break;
- case 2:
- /* 2 x SMII ports */
+ case EMAC_PHY_MODE_NONE_GMII:
+ /* 1 x GMII port on channel 0 */
+ rgmiifer |= RGMII_FER_GMII << 0;
+ rgmiifer |= RGMII_FER_DIS << 4;
+ out_be32((void *)RGMII_FER, rgmiifer);
+ bis->bi_phymode[0] = BI_PHYMODE_GMII;
+ bis->bi_phymode[1] = BI_PHYMODE_NONE;
+ break;
+ case EMAC_PHY_MODE_NONE_MII:
+ /* 1 x MII port on channel 0 */
+ rgmiifer |= RGMII_FER_MII << 0;
+ rgmiifer |= RGMII_FER_DIS << 4;
+ out_be32((void *)RGMII_FER, rgmiifer);
+ bis->bi_phymode[0] = BI_PHYMODE_MII;
+ bis->bi_phymode[1] = BI_PHYMODE_NONE;
+ break;
+ case EMAC_PHY_MODE_GMII_NONE:
+ /* 1 x GMII port on channel 1 */
+ rgmiifer |= RGMII_FER_DIS << 0;
+ rgmiifer |= RGMII_FER_GMII << 4;
+ out_be32((void *)RGMII_FER, rgmiifer);
+ bis->bi_phymode[0] = BI_PHYMODE_NONE;
+ bis->bi_phymode[1] = BI_PHYMODE_GMII;
+ break;
+ case EMAC_PHY_MODE_MII_NONE:
+ /* 1 x MII port on channel 1 */
+ rgmiifer |= RGMII_FER_DIS << 0;
+ rgmiifer |= RGMII_FER_MII << 4;
+ out_be32((void *)RGMII_FER, rgmiifer);
+ bis->bi_phymode[0] = BI_PHYMODE_NONE;
+ bis->bi_phymode[1] = BI_PHYMODE_MII;
break;
default:
break;
}
/* Ensure we setup mdio for this devnum and ONLY this devnum */
- gmiifer = in_be32((void *)RGMII_FER);
- gmiifer |= (1 << (19-devnum));
- out_be32((void *)RGMII_FER, gmiifer);
+ rgmiifer = in_be32((void *)RGMII_FER);
+ rgmiifer |= (1 << (19-devnum));
+ out_be32((void *)RGMII_FER, rgmiifer);
return ((int)0x0);
}
diff --git a/include/configs/kilauea.h b/include/configs/kilauea.h
index f3d048c..dc246fd 100644
--- a/include/configs/kilauea.h
+++ b/include/configs/kilauea.h
@@ -375,6 +375,7 @@
*----------------------------------------------------------------------*/
#define CONFIG_M88E1111_PHY 1
#define CONFIG_IBM_EMAC4_V4 1
+#define CONFIG_EMAC_PHY_MODE EMAC_PHY_MODE_RGMII_RGMII
#define CONFIG_PHY_ADDR 1 /* PHY address, See schematics */
#define CONFIG_PHY_RESET 1 /* reset phy upon startup */
diff --git a/include/configs/makalu.h b/include/configs/makalu.h
index 65b240e..ab92ae4 100644
--- a/include/configs/makalu.h
+++ b/include/configs/makalu.h
@@ -223,6 +223,7 @@
*----------------------------------------------------------------------*/
#define CONFIG_M88E1111_PHY 1
#define CONFIG_IBM_EMAC4_V4 1
+#define CONFIG_EMAC_PHY_MODE EMAC_PHY_MODE_RGMII_RGMII
#define CONFIG_PHY_ADDR 6 /* PHY address, See schematics */
#define CONFIG_PHY_RESET 1 /* reset phy upon startup */
diff --git a/include/ppc4xx_enet.h b/include/ppc4xx_enet.h
index 4c97b36..b74c6fc 100644
--- a/include/ppc4xx_enet.h
+++ b/include/ppc4xx_enet.h
@@ -153,6 +153,20 @@ typedef struct emac_4xx_hw_st {
#define SDR0_PFC1_EM_1000 (0x00200000)
#endif
+/*
+ * XMII bridge configurations for those systems (e.g. 405EX(r)) that do
+ * not have a pin function control (PFC) register to otherwise determine
+ * the bridge configuration.
+ */
+#define EMAC_PHY_MODE_NONE 0
+#define EMAC_PHY_MODE_NONE_RGMII 1
+#define EMAC_PHY_MODE_RGMII_NONE 2
+#define EMAC_PHY_MODE_RGMII_RGMII 3
+#define EMAC_PHY_MODE_NONE_GMII 4
+#define EMAC_PHY_MODE_GMII_NONE 5
+#define EMAC_PHY_MODE_NONE_MII 6
+#define EMAC_PHY_MODE_MII_NONE 7
+
/* ZMII Bridge Register addresses */
#if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
@@ -218,12 +232,12 @@ typedef struct emac_4xx_hw_st {
#endif
/* RGMII Function Enable (FER) Register Bit Definitions */
-/* Note: for EMAC 2 and 3 only, 440GX only */
#define RGMII_FER_DIS (0x00)
#define RGMII_FER_RTBI (0x04)
#define RGMII_FER_RGMII (0x05)
#define RGMII_FER_TBI (0x06)
#define RGMII_FER_GMII (0x07)
+#define RGMII_FER_MII (RGMII_FER_GMII)
#define RGMII_FER_V(__x) ((__x - 2) * 4)
--
1.5.4.3
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