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ppc4xx: Add MII mode support to the EMAC RGMII Bridge

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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>
This commit is contained in:
Grant Erickson
2008-07-08 08:35:00 -07:00
committed by Stefan Roese
parent 2e2050842e
commit 1740c1bf40
4 changed files with 86 additions and 12 deletions
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80
cpu/ppc4xx/4xx_enet.c
View File

@@ -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);
}