netdev - [PATCH] net: dsa: bcm_sf2: Clear IDDQ_GLOBAL

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Message-Id: <20171122013714.5568-1-f.fainelli@gmail.com>
Date:   Tue, 21 Nov 2017 17:37:14 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, andrew@...n.ch,
        vivien.didelot@...oirfairelinux.com,
        Florian Fainelli <florian.fainelli@...adcom.com>
Subject: [PATCH] net: dsa: bcm_sf2: Clear IDDQ_GLOBAL_PWR bit for PHY

From: Florian Fainelli <florian.fainelli@...adcom.com>

The PHY on BCM7278 has an additional bit that needs to be cleared:
IDDQ_GLOBAL_PWR, without doing this, the PHY remains stuck in reset out
of suspend/resume cycles.

refs #SWLINUX-4599

Fixes: 1ad948be42b4 ("net: dsa: bcm_sf2: Add support for BCM7278 integrated switch")
Signed-off-by: Florian Fainelli <florian.fainelli@...adcom.com>
---
 drivers/net/dsa/bcm_sf2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 09b48f9b4091..12b921d1c54b 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -214,7 +214,7 @@ static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
 	reg = reg_readl(priv, REG_SPHY_CNTRL);
 	if (enable) {
 		reg |= PHY_RESET;
-		reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | CK25_DIS);
+		reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | IDDQ_GLOBAL_PWR | CK25_DIS);
 		reg_writel(priv, reg, REG_SPHY_CNTRL);
 		udelay(21);
 		reg = reg_readl(priv, REG_SPHY_CNTRL);
-- 
2.14.3