[PATCH net-next v3 1/2] lan78xx: Enable 125 MHz CLK configuration for LAN7801 if NO EEPROM is detected

From: Rengarajan S
Date: Wed May 29 2024 - 10:05:00 EST


The 125MHz and 25MHz clock configurations are enabled in the initialization
regardless of EEPROM (125MHz is needed for RGMII 1000Mbps operation). After
a lite reset (lan78xx_reset), these contents go back to defaults(all 0, so
no 125MHz or 25MHz clock).

Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Signed-off-by: Rengarajan S <rengarajan.s@xxxxxxxxxxxxx>
---
drivers/net/usb/lan78xx.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index ba6c8ac2a736..7ac540cc3686 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2944,6 +2944,8 @@ static int lan78xx_reset(struct lan78xx_net *dev)
return ret;

buf |= HW_CFG_MEF_;
+ buf |= HW_CFG_CLK125_EN_;
+ buf |= HW_CFG_REFCLK25_EN_;

ret = lan78xx_write_reg(dev, HW_CFG, buf);
if (ret < 0)
--
2.25.1