diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2009-05-29 18:00:16 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2010-07-13 17:50:50 -0400 |
| commit | 0c929426f8239f4cdf8a4f418596261353bfb455 (patch) | |
| tree | 4442d351d2c6d353ca7e86860756387df7e7ebee /board | |
| parent | 9280c3f106968a44ba5721c72eba54db63704b2f (diff) | |
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>
Diffstat (limited to 'board')
| -rw-r--r-- | board/bf518f-ezbrd/bf518f-ezbrd.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/board/bf518f-ezbrd/bf518f-ezbrd.c b/board/bf518f-ezbrd/bf518f-ezbrd.c index 85b350f3ec7..c2ab598d70d 100644 --- a/board/bf518f-ezbrd/bf518f-ezbrd.c +++ b/board/bf518f-ezbrd/bf518f-ezbrd.c @@ -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_clear(struct spi_slave *slave, uchar reg, uchar mask) +static int ksz8893m_reg_read(struct spi_slave *slave, uchar reg) { - int ret = 0; + int ret; unsigned char din[3]; + ret = ksz8893m_transfer(slave, KSZ_READ, reg, 0, din); + return ret ? ret : din[2]; +} - ret |= ksz8893m_transfer(slave, KSZ_READ, reg, 0, din); - ret |= ksz8893m_reg_set(slave, reg, din[2] & mask); - - return ret; +static int ksz8893m_reg_clear(struct spi_slave *slave, uchar reg, uchar mask) +{ + 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); |