From: stephen hemminger <shemminger@vyatta.com>
Date: Sun, 7 Feb 2010 06:24:50 +0000 (+0000)
Subject: sky2: disable ASF on Yukon Supreme
X-Git-Tag: v2.6.34-rc1~233^2~385
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=acd12dde26eef5186a9d2ead9399d136932d2398;p=~emulex%2Finfiniband.git

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>
---

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 1593ed49e8f..1aa1f331670 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -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);