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bsps/arm: Reset MII management in LPC Ethernet

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Reduce MII clock to support LPC17XX.
This commit is contained in:
Pavel Pisa
2014-02-21 14:08:03 +01:00
committed by Sebastian Huber
parent 810815c4b7
commit 369bb13bce
1 changed files with 7 additions and 1 deletions
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8
c/src/lib/libbsp/arm/shared/lpc/network/lpc-ethernet.c
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@@ -232,6 +232,8 @@ static volatile lpc_eth_controller *const lpc_eth =
#define ETH_MCFG_CLOCK_SELECT(val) BSP_FLD32(val, 2, 4)
#define ETH_MCFG_RESETMIIMGMT BSP_BIT32(15)
/* ETH_MCMD */
#define ETH_MCMD_READ BSP_BIT32(0)
@@ -1327,7 +1329,11 @@ static int lpc_eth_up_or_down(lpc_eth_driver_entry *e, bool up)
lpc_eth->mac1 = 0xf00;
/* Initialize PHY */
lpc_eth->mcfg = ETH_MCFG_CLOCK_SELECT(0x7);
/* Clock value 10 (divide by 44 ) is safe on LPC178x up to 100 MHz AHB clock */
lpc_eth->mcfg = ETH_MCFG_CLOCK_SELECT(10) | ETH_MCFG_RESETMIIMGMT;
rtems_task_wake_after(1);
lpc_eth->mcfg = ETH_MCFG_CLOCK_SELECT(10);
rtems_task_wake_after(1);
eno = lpc_eth_phy_up(e);
if (eno == 0) {