diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2010-12-03 00:31:48 -0500 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-04-08 00:44:25 -0400 |
| commit | f57689e795c6b28db15e307536ec821426bba145 (patch) | |
| tree | 4464927581b524059dac8de8d87c2841c023b1d5 /board/bf518f-ezbrd | |
| parent | 4db2fa7f9446d0f2fe8db3d62184b1212fe22707 (diff) | |
Blackfin: bf518f-ezbrd: don't require SPI logic all the time
Only the first run of boards had a ksz switch on it, so if building for a
newer silicon rev or SPI is disabled, don't bother checking for the ksz.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'board/bf518f-ezbrd')
| -rw-r--r-- | board/bf518f-ezbrd/bf518f-ezbrd.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/board/bf518f-ezbrd/bf518f-ezbrd.c b/board/bf518f-ezbrd/bf518f-ezbrd.c index ff1ac4cda..6b455de38 100644 --- a/board/bf518f-ezbrd/bf518f-ezbrd.c +++ b/board/bf518f-ezbrd/bf518f-ezbrd.c @@ -57,6 +57,13 @@ static void board_init_enetaddr(uchar *mac_addr) eth_setenv_enetaddr("ethaddr", mac_addr); } +/* Only the first run of boards had a KSZ switch */ +#if defined(CONFIG_BFIN_SPI) && __SILICON_REVISION__ == 0 +# define KSZ_POSSIBLE 1 +#else +# define KSZ_POSSIBLE 0 +#endif + #define KSZ_MAX_HZ 5000000 #define KSZ_WRITE 0x02 @@ -109,17 +116,16 @@ static int ksz8893m_reset(struct spi_slave *slave) return ret; } -int board_eth_init(bd_t *bis) +static bool board_ksz_init(void) { - static bool switch_is_alive = false, phy_is_ksz = true; - int ret; + static bool switch_is_alive = false; 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)) { - phy_is_ksz = (ksz8893m_reg_read(slave, KSZ_REG_CHID) == 0x88); - ret = phy_is_ksz ? ksz8893m_reset(slave) : 0; + bool phy_is_ksz = (ksz8893m_reg_read(slave, KSZ_REG_CHID) == 0x88); + int ret = phy_is_ksz ? ksz8893m_reset(slave) : 0; switch_is_alive = (ret == 0); spi_release_bus(slave); } @@ -127,10 +133,16 @@ int board_eth_init(bd_t *bis) } } - if (switch_is_alive) - return bfin_EMAC_initialize(bis); - else - return -1; + return switch_is_alive; +} + +int board_eth_init(bd_t *bis) +{ + if (KSZ_POSSIBLE) { + if (!board_ksz_init()) + return 0; + } + return bfin_EMAC_initialize(bis); } #endif |