lan78xx: Enable 125 MHz CLK configuration for LAN7801 if NO EEPROM is detected

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@kernel.org>
Signed-off-by: Rengarajan S <rengarajan.s@microchip.com>
Link: https://lore.kernel.org/r/20240529140256.1849764-2-rengarajan.s@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index 7a5cc49ebec662fb9ebc8c48dd22af48c5f9a832..2472216564e71b1a9ddceb9f0c5405819bf86f38 100644 (file)
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2941,6 +2941,8 @@ 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)