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| author | Stefan Roese <sr@denx.de> | 2007-11-13 08:18:20 +0100 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2007-11-13 08:18:20 +0100 |
| commit | 54fd6c93c28a0a45352fff5dd92673401ff563f2 (patch) | |
| tree | 337a4d3eace97b3d56b7f955c3ddb9fb3711ef17 /board/lwmon5/lwmon5.c | |
| parent | 5c568d6a7f950b9e7e32a63a5893f979b8789b4d (diff) | |
| download | blackbird-obmc-uboot-54fd6c93c28a0a45352fff5dd92673401ff563f2.tar.gz blackbird-obmc-uboot-54fd6c93c28a0a45352fff5dd92673401ff563f2.zip | |
ppc4xx: lwmon5: Change PHY reset sequence for PHY MDIO address latching
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'board/lwmon5/lwmon5.c')
| -rw-r--r-- | board/lwmon5/lwmon5.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/board/lwmon5/lwmon5.c b/board/lwmon5/lwmon5.c index 77f998971a..9b24a7e55e 100644 --- a/board/lwmon5/lwmon5.c +++ b/board/lwmon5/lwmon5.c @@ -96,6 +96,23 @@ int board_early_init_f(void) gpio_write_bit(CFG_GPIO_FLASH_WP, 1); + /* + * Reset PHY's: + * The PHY's need a 2nd reset pulse, since the MDIO address is latched + * upon reset, and with the first reset upon powerup, the addresses are + * not latched reliable, since the IRQ line is multiplexed with an + * MDIO address. A 2nd reset at this time will make sure, that the + * correct address is latched. + */ + gpio_write_bit(CFG_GPIO_PHY0_RST, 1); + gpio_write_bit(CFG_GPIO_PHY1_RST, 1); + udelay(1000); + gpio_write_bit(CFG_GPIO_PHY0_RST, 0); + gpio_write_bit(CFG_GPIO_PHY1_RST, 0); + udelay(1000); + gpio_write_bit(CFG_GPIO_PHY0_RST, 1); + gpio_write_bit(CFG_GPIO_PHY1_RST, 1); + return 0; } @@ -231,15 +248,6 @@ int misc_init_r(void) out_be32((void *)CFG_LIME_MMR, CFG_LIME_MMR_VALUE); /* - * Reset PHY's - */ - gpio_write_bit(CFG_GPIO_PHY0_RST, 0); - gpio_write_bit(CFG_GPIO_PHY1_RST, 0); - udelay(100); - gpio_write_bit(CFG_GPIO_PHY0_RST, 1); - gpio_write_bit(CFG_GPIO_PHY1_RST, 1); - - /* * Init display controller */ /* Setup dot clock (internal PLL, division rate 1/16) */ |
