diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0209-net-genet-enable-link-energy-detect-powerdown-for-ex.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0209-net-genet-enable-link-energy-detect-powerdown-for-ex.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0209-net-genet-enable-link-energy-detect-powerdown-for-ex.patch b/target/linux/bcm27xx/patches-5.4/950-0209-net-genet-enable-link-energy-detect-powerdown-for-ex.patch new file mode 100644 index 0000000000..ab43dfdfe5 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0209-net-genet-enable-link-energy-detect-powerdown-for-ex.patch @@ -0,0 +1,31 @@ +From cbe8b55622fc2f0a959da599447c87cf1f967a91 Mon Sep 17 00:00:00 2001 +From: Jonathan Bell <jonathan@raspberrypi.org> +Date: Tue, 14 May 2019 17:17:59 +0100 +Subject: [PATCH] net: genet: enable link energy detect powerdown for + external PHYs + +There are several warts surrounding bcmgenet_mii_probe() as this +function is called from ndo_open, but it's calling registration-type +functions. The probe should be called at probe time and refactored +such that the PHY device data can be extracted to limit the scope +of this flag to Broadcom PHYs. + +For now, pass this flag in as it puts our attached PHY into a low-power +state when disconnected. + +Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org> +--- + drivers/net/ethernet/broadcom/genet/bcmmii.c | 2 ++ + 1 file changed, 2 insertions(+) + +--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c ++++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c +@@ -316,6 +316,8 @@ int bcmgenet_mii_probe(struct net_device + /* Communicate the integrated PHY revision */ + if (priv->internal_phy) + phy_flags = priv->gphy_rev; ++ else ++ phy_flags = PHY_BRCM_AUTO_PWRDWN_ENABLE; + + /* Initialize link state variables that bcmgenet_mii_setup() uses */ + priv->old_link = -1; |