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054c0d4e31
Backport the mdio-bus reset gpio support from 4.12 and use it instead of toggling the reset ourself. Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
44 lines
1.4 KiB
Diff
44 lines
1.4 KiB
Diff
From df0c8d911abf6ba97b2c2fc3c5a12769e0b081a3 Mon Sep 17 00:00:00 2001
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From: Florian Fainelli <f.fainelli@gmail.com>
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Date: Thu, 11 May 2017 11:24:16 -0700
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Subject: [PATCH] net: phy: Call bus->reset() after releasing PHYs from reset
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The API convention makes it that a given MDIO bus reset should be able
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to access PHY devices in its reset() callback and perform additional
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MDIO accesses in order to bring the bus and PHYs in a working state.
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Commit 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.") broke that
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contract by first calling bus->reset() and then release all PHYs from
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reset using their shared GPIO line, so restore the expected
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functionality here.
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Fixes: 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.")
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Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/phy/mdio_bus.c | 6 +++---
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1 file changed, 3 insertions(+), 3 deletions(-)
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--- a/drivers/net/phy/mdio_bus.c
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+++ b/drivers/net/phy/mdio_bus.c
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@@ -279,9 +279,6 @@ int __mdiobus_register(struct mii_bus *b
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mutex_init(&bus->mdio_lock);
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- if (bus->reset)
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- bus->reset(bus);
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-
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/* de-assert bus level PHY GPIO resets */
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if (bus->num_reset_gpios > 0) {
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bus->reset_gpiod = devm_kcalloc(&bus->dev,
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@@ -311,6 +308,9 @@ int __mdiobus_register(struct mii_bus *b
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}
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}
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+ if (bus->reset)
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+ bus->reset(bus);
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+
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for (i = 0; i < PHY_MAX_ADDR; i++) {
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if ((bus->phy_mask & (1 << i)) == 0) {
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struct phy_device *phydev;
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