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Blackfin: bf518f-ezbrd: handle different PHYs dynamically 

The original BF518F-EZBRD's have a Micrel KSZ8893 DSA on them, but newer
ones only have a National PHY (which lack a RX Error interrupt line).  So
in the board eth init code, dynamically detect what is hooked up to the MAC
and handle each accordingly.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2009-05-29 18:00:16 -04:00
parent 9280c3f106
commit 0c929426f8
2 changed files with 34 additions and 11 deletions
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25
board/bf518f-ezbrd/bf518f-ezbrd.c
View File

@ -61,6 +61,7 @@ static void board_init_enetaddr(uchar *mac_addr)
#define KSZ_WRITE 0x02
#define KSZ_READ 0x03
#define KSZ_REG_CHID 0x00 /* Register 0: Chip ID0 */
#define KSZ_REG_STPID 0x01 /* Register 1: Chip ID1 / Start Switch */
#define KSZ_REG_GC9 0x0b /* Register 11: Global Control 9 */
#define KSZ_REG_P3C0 0x30 /* Register 48: Port 3 Control 0 */
@ -78,15 +79,17 @@ static int ksz8893m_reg_set(struct spi_slave *slave, uchar reg, uchar data)
return ksz8893m_transfer(slave, KSZ_WRITE, reg, data, din);
}
static int ksz8893m_reg_read(struct spi_slave *slave, uchar reg)
{
int ret;
unsigned char din[3];
ret = ksz8893m_transfer(slave, KSZ_READ, reg, 0, din);
return ret ? ret : din[2];
}
static int ksz8893m_reg_clear(struct spi_slave *slave, uchar reg, uchar mask)
{
int ret = 0;
unsigned char din[3];
ret |= ksz8893m_transfer(slave, KSZ_READ, reg, 0, din);
ret |= ksz8893m_reg_set(slave, reg, din[2] & mask);
return ret;
return ksz8893m_reg_set(slave, reg, ksz8893m_reg_read(slave, reg) & mask);
}
static int ksz8893m_reset(struct spi_slave *slave)
@ -107,16 +110,16 @@ static int ksz8893m_reset(struct spi_slave *slave)
int board_eth_init(bd_t *bis)
{
static bool switch_is_alive = false;
static bool switch_is_alive = false, phy_is_ksz = true;
int ret;
if (!switch_is_alive) {
struct spi_slave *slave = spi_setup_slave(0, 1, KSZ_MAX_HZ, SPI_MODE_3);
if (slave) {
if (!spi_claim_bus(slave)) {
ret = ksz8893m_reset(slave);
if (!ret)
switch_is_alive = true;
phy_is_ksz = (ksz8893m_reg_read(slave, KSZ_REG_CHID) == 0x88);
ret = phy_is_ksz ? ksz8893m_reset(slave) : 0;
switch_is_alive = (ret == 0);
spi_release_bus(slave);
}
spi_free_slave(slave);

20
include/configs/bf518f-ezbrd.h
View File

@ -63,6 +63,26 @@
#if !defined(__ADSPBF512__) && !defined(__ADSPBF514__)
#define ADI_CMDS_NETWORK 1
#define CONFIG_BFIN_MAC
#define CONFIG_BFIN_MAC_PINS \
{ \
P_MII0_ETxD0, \
P_MII0_ETxD1, \
P_MII0_ETxD2, \
P_MII0_ETxD3, \
P_MII0_ETxEN, \
P_MII0_TxCLK, \
P_MII0_PHYINT, \
P_MII0_COL, \
P_MII0_ERxD0, \
P_MII0_ERxD1, \
P_MII0_ERxD2, \
P_MII0_ERxD3, \
P_MII0_ERxDV, \
P_MII0_ERxCLK, \
P_MII0_CRS, \
P_MII0_MDC, \
P_MII0_MDIO, \
0 }
#define CONFIG_NETCONSOLE 1
#define CONFIG_NET_MULTI 1
#endif