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sky2: disable ASF on Yukon Supreme 

Clone of vendor code to disable ASF on Extreme and Supreme chips.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2010-02-07 06:24:50 +00:00 committed by David S. Miller
parent a0db28b898
commit acd12dde26
1 changed files with 10 additions and 1 deletions
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11
drivers/net/sky2.c
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@ -3035,11 +3035,20 @@ static void sky2_reset(struct sky2_hw *hw)
u32 hwe_mask = Y2_HWE_ALL_MASK;
/* disable ASF */
if (hw->chip_id == CHIP_ID_YUKON_EX) {
if (hw->chip_id == CHIP_ID_YUKON_EX
|| hw->chip_id == CHIP_ID_YUKON_SUPR) {
sky2_write32(hw, CPU_WDOG, 0);
status = sky2_read16(hw, HCU_CCSR);
status &= ~(HCU_CCSR_AHB_RST | HCU_CCSR_CPU_RST_MODE |
HCU_CCSR_UC_STATE_MSK);
/*
* CPU clock divider shouldn't be used because
* - ASF firmware may malfunction
* - Yukon-Supreme: Parallel FLASH doesn't support divided clocks
*/
status &= ~HCU_CCSR_CPU_CLK_DIVIDE_MSK;
sky2_write16(hw, HCU_CCSR, status);
sky2_write32(hw, CPU_WDOG, 0);
} else
sky2_write8(hw, B28_Y2_ASF_STAT_CMD, Y2_ASF_RESET);
sky2_write16(hw, B0_CTST, Y2_ASF_DISABLE);