[PATCH] net: phy: dp83822: Add optional external PHY clock
From: Stefan Wahren <wahrenst@gmx.net>
Date: 2026-05-27 15:39:20
Also in:
lkml
Subsystem:
ethernet phy library, networking drivers, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
In some cases, the PHY can use an external ref clock source instead of a crystal. Add an optional clock in the PHY node to make sure that the clock source is enabled, if specified, before probing. Signed-off-by: Stefan Wahren <wahrenst@gmx.net> --- drivers/net/phy/dp83822.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c
index c012dfab3171..faa8b02d32be 100644
--- a/drivers/net/phy/dp83822.c
+++ b/drivers/net/phy/dp83822.c@@ -4,6 +4,7 @@ * Copyright (C) 2017 Texas Instruments Inc. */ +#include <linux/clk.h> #include <linux/ethtool.h> #include <linux/etherdevice.h> #include <linux/kernel.h>
@@ -203,6 +204,7 @@ struct dp83822_private { u8 cfg_dac_minus; u8 cfg_dac_plus; struct ethtool_wolinfo wol; + struct clk *clk; bool set_gpio2_clk_out; u32 gpio2_clk_out; bool led_pin_enable[DP83822_MAX_LED_PINS];
@@ -984,13 +986,19 @@ static int dp83822_attach_mdi_port(struct phy_device *phydev, static int dp8382x_probe(struct phy_device *phydev) { + struct device *dev = &phydev->mdio.dev; struct dp83822_private *dp83822; - dp83822 = devm_kzalloc(&phydev->mdio.dev, sizeof(*dp83822), + dp83822 = devm_kzalloc(dev, sizeof(*dp83822), GFP_KERNEL); if (!dp83822) return -ENOMEM; + dp83822->clk = devm_clk_get_optional_enabled(dev, NULL); + if (IS_ERR(dp83822->clk)) + return dev_err_probe(dev, PTR_ERR(dp83822->clk), + "Failed to request ref clock\n"); + dp83822->tx_amplitude_100base_tx_index = -1; dp83822->mac_termination_index = -1; phydev->priv = dp83822;
--
2.43.0