You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.6 KiB
Diff
49 lines
1.6 KiB
Diff
From 645eb2cf211c04496c9f5daca23ab16ce796b0df 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 | 11 +++++++++++
|
|
1 file changed, 11 insertions(+)
|
|
|
|
--- a/drivers/net/usb/lan78xx.c
|
|
+++ b/drivers/net/usb/lan78xx.c
|
|
@@ -2477,6 +2477,11 @@ static int lan78xx_reset(struct lan78xx_
|
|
int ret = 0;
|
|
unsigned long timeout;
|
|
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);
|
|
buf |= HW_CFG_LRST_;
|
|
@@ -2530,6 +2535,9 @@ static int lan78xx_reset(struct lan78xx_
|
|
|
|
ret = lan78xx_read_reg(dev, HW_CFG, &buf);
|
|
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);
|
|
|
|
ret = lan78xx_read_reg(dev, USB_CFG0, &buf);
|
|
@@ -2585,6 +2593,9 @@ 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);
|
|
|
|
ret = lan78xx_read_reg(dev, MAC_TX, &buf);
|