openwrt/target/linux/bcm27xx/patches-5.10/950-0076-lan78xx-Read-initial-EEE-status-from-DT.patch
Álvaro Fernández Rojas 8299d1f057 bcm27xx: add kernel 5.10 support
Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted
patches, wireless patches and defconfig patches.

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 4B v1.1 4G
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2021-08-21 19:07:07 +02:00

41 lines
1.3 KiB
Diff

From 1fbf5f72be35918230b0bbdff3bcf44318f1374a Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 9 Mar 2018 12:01:00 +0000
Subject: [PATCH] lan78xx: Read initial EEE status from DT
Add two new DT properties:
* microchip,eee-enabled - a boolean to enable EEE
* microchip,tx-lpi-timer - time in microseconds to wait before entering
low power state
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/net/usb/lan78xx.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2635,6 +2635,22 @@ static int lan78xx_open(struct net_devic
netif_dbg(dev, ifup, dev->net, "phy initialised successfully");
+ if (of_property_read_bool(dev->udev->dev.of_node,
+ "microchip,eee-enabled")) {
+ struct ethtool_eee edata;
+ memset(&edata, 0, sizeof(edata));
+ edata.cmd = ETHTOOL_SEEE;
+ edata.advertised = ADVERTISED_1000baseT_Full |
+ ADVERTISED_100baseT_Full;
+ edata.eee_enabled = true;
+ edata.tx_lpi_enabled = true;
+ if (of_property_read_u32(dev->udev->dev.of_node,
+ "microchip,tx-lpi-timer",
+ &edata.tx_lpi_timer))
+ edata.tx_lpi_timer = 600; /* non-aggressive */
+ (void)lan78xx_set_eee(net, &edata);
+ }
+
/* for Link Check */
if (dev->urb_intr) {
ret = usb_submit_urb(dev->urb_intr, GFP_KERNEL);