1 files changed, 49 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0055-lan78xx-Enable-LEDs-and-auto-negotiation.patch b/target/linux/bcm27xx/patches-5.15/950-0055-lan78xx-Enable-LEDs-and-auto-negotiation.patch
new file mode 100644
index 0000000000..47fbf510fa
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0055-lan78xx-Enable-LEDs-and-auto-negotiation.patch
@@ -0,0 +1,49 @@
+From ec6fe1f3510a68ea742758b1cd806a5a08fed7ae Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 17 Oct 2017 15:04:29 +0100
+Subject: [PATCH] lan78xx: Enable LEDs and auto-negotiation
+
+For applications of the LAN78xx that don't have valid programmed
+EEPROMs or OTPs, enabling both LEDs and auto-negotiation by default
+seems reasonable.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/usb/lan78xx.c | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+--- a/drivers/net/usb/lan78xx.c
++++ b/drivers/net/usb/lan78xx.c
+@@ -2716,6 +2716,11 @@ static int lan78xx_reset(struct lan78xx_
+ 	int ret;
+ 	u32 buf;
+ 	u8 sig;
++	bool has_eeprom;
++	bool has_otp;
++
++	has_eeprom = !lan78xx_read_eeprom(dev, 0, 0, NULL);
++	has_otp = !lan78xx_read_otp(dev, 0, 0, NULL);
+ 
+ 	ret = lan78xx_read_reg(dev, HW_CFG, &buf);
+ 	if (ret < 0)
+@@ -2797,6 +2802,10 @@ static int lan78xx_reset(struct lan78xx_
+ 
+ 	buf |= HW_CFG_MEF_;
+ 
++	/* If no valid EEPROM and no valid OTP, enable the LEDs by default */
++	if (!has_eeprom && !has_otp)
++	    buf |= HW_CFG_LED0_EN_ | HW_CFG_LED1_EN_;
++
+ 	ret = lan78xx_write_reg(dev, HW_CFG, buf);
+ 	if (ret < 0)
+ 		return ret;
+@@ -2895,6 +2904,9 @@ static int lan78xx_reset(struct lan78xx_
+ 			buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_;
+ 		}
+ 	}
++	/* If no valid EEPROM and no valid OTP, enable AUTO negotiation */
++	if (!has_eeprom && !has_otp)
++	    buf |= MAC_CR_AUTO_DUPLEX_ | MAC_CR_AUTO_SPEED_;
+ 	ret = lan78xx_write_reg(dev, MAC_CR, buf);
+ 	if (ret < 0)
+ 		return ret;