From: Roger Quadros <rogerq@ti.com>
Date: Mon, 6 Jan 2020 13:06:20 +0000 (+0200)
Subject: phy: cadence: Sierra: add phy_reset hook
X-Git-Tag: kvm-5.6-2~70^2~16^2~6
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=7904e15b4d31a5515a882c3a87dfc898c4749fed;p=users%2Fdwmw2%2Flinux.git

phy: cadence: Sierra: add phy_reset hook

Some platforms e.g. J721e need lane swap register
to be programmed before reset is deasserted.
This patch ensures that we propagate the phy_reset
back to the reset controller driver.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Reviewed-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---

diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c
index ecfb1f9de2e35..a5c08e5bd2bf7 100644
--- a/drivers/phy/cadence/phy-cadence-sierra.c
+++ b/drivers/phy/cadence/phy-cadence-sierra.c
@@ -341,10 +341,20 @@ static int cdns_sierra_phy_off(struct phy *gphy)
 	return reset_control_assert(ins->lnk_rst);
 }
 
+static int cdns_sierra_phy_reset(struct phy *gphy)
+{
+	struct cdns_sierra_phy *sp = dev_get_drvdata(gphy->dev.parent);
+
+	reset_control_assert(sp->phy_rst);
+	reset_control_deassert(sp->phy_rst);
+	return 0;
+};
+
 static const struct phy_ops ops = {
 	.init		= cdns_sierra_phy_init,
 	.power_on	= cdns_sierra_phy_on,
 	.power_off	= cdns_sierra_phy_off,
+	.reset		= cdns_sierra_phy_reset,
 	.owner		= THIS_MODULE,
 };