ppc4xx: Add MII mode support to the EMAC RGMII Bridge
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@nuovations.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/cpu/ppc4xx/4xx_enet.c b/cpu/ppc4xx/4xx_enet.c
index 4e863dc..26d74d2 100644
--- a/cpu/ppc4xx/4xx_enet.c
+++ b/cpu/ppc4xx/4xx_enet.c
@@ -465,30 +465,88 @@
#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 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 2:
- /* 2 x SMII ports */
+ 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);
}