From b51eb27f96c7b0d0d04d3b5025cee173ebd91198 Mon Sep 17 00:00:00 2001
From: Jonathan Bell <jonathan@raspberrypi.com>
Date: Mon, 22 May 2023 15:31:17 +0100
Subject: [PATCH 0564/1085] net: phy: broadcom: optionally enable link-down
 powersave based on DT

It's really a function of the board whether or not to use this feature
as it may require MAC compatibility as well as interop testing.

Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
---
 drivers/net/phy/broadcom.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -383,6 +383,9 @@ static int bcm54xx_config_init(struct ph
 	    (phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE))
 		bcm_phy_write_shadow(phydev, BCM54XX_SHD_RGMII_MODE, 0);
 
+	if (of_property_read_bool(np, "brcm,powerdown-enable"))
+		phydev->dev_flags |= PHY_BRCM_AUTO_PWRDWN_ENABLE;
+
 	bcm54xx_adjust_rxrefclk(phydev);
 
 	switch (BRCM_PHY_MODEL(phydev)) {
