Hi, Sir
I am debugging the driver for 88EA6321.
The function ‘of_find_net_device_by_node(ethernet)’ in dsa2.c line 460 returned an error.
Only one related error prompt is seen in the log: eqos_mdio_read:No clks available, skipping PHY read
Used the following device-tree configuration:
fec1:ether_qos@2490000 {
/* PTP_ref clock speed in MHz */
nvidia,ptp_ref_clock_speed = <312500000>;
/* rxq_enable_ctrl = <rx0 rx1 rx2 rx3>
* 0x0 = Not enabled, 0x1 = Enabled for AV
* 0x2 = Enabled for Legacy, 0x3 = Reserved
*/
nvidia,rxq_enable_ctrl = <2 2 2 2>;
nvidia,queue_prio = <0 1 2 3>;
nvidia,use_tagged_ptp;
nvidia,ptp_dma_ch = <3>;
nvidia,chan_napi_quota = <64 64 64 64>;
nvidia,pause_frames = <0>; /*0=enable, 1=disable */
nvidia,phy-reset-gpio = <&tegra_main_gpio TEGRA194_MAIN_GPIO(G, 5) 0>;
nvidia,phy-max-frame-size = <16>; /* size in kbytes */
nvidia,eth_iso_enable = <1>; /*0=enable, 1=disable */
phy-mode = "rgmii";
fixed-link {
speed = <1000>;
full-duplex;
pause;
};
mdio {
compatible = "nvidia,eqos-mdio";
#address-cells = <1>;
#size-cells = <0>;
switch0@0 {
compatible = "marvell,mv88e6085";
dsa,member = <0 0>;
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
switch,phy-reset-gpios = <&tegra_main_gpio TEGRA194_MAIN_GPIO(G, 5) 0>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0{
reg = <0>;
label = "lan0";
};
port@1{
reg = <1>;
label = "lan1";
};
port@2{
reg = <2>;
label = "lan2";
};
port@3{
reg = <3>;
label = "lan3";
};
port@4{
reg = <4>;
label = "lan4";
};
port@5{
reg = <5>;
label = "cpu";
ethernet = <&fec1>;
phy-mode = "rgmii";
fixed-link {
speed = <1000>;
full-duplex;
};
};
port@6{
reg = <6>;
label = "lan6";
};
};
};
};
};
static int dsa_cpu_parse(struct device_node *port, u32 index,
struct dsa_switch_tree *dst,
struct dsa_switch *ds)
{
enum dsa_tag_protocol tag_protocol;
struct net_device *ethernet_dev;
struct device_node *ethernet;
printk(“geng-dsa2.c-41\n”);
ethernet = of_parse_phandle(port, “ethernet”, 0);
if (!ethernet)
return -EINVAL;
printk(“geng-dsa2.c-42\n”);
ethernet_dev = of_find_net_device_by_node(ethernet);
if (!ethernet_dev)
return -EPROBE_DEFER; /the function return here/
printk(“geng-dsa2.c-43\n”);
if (!ds->master_netdev)
ds->master_netdev = ethernet_dev;
printk(“geng-dsa2.c-44\n”);
if (!dst->master_netdev)
dst->master_netdev = ethernet_dev;
printk(“geng-dsa2.c-45\n”);
if (dst->cpu_switch == -1) {
dst->cpu_switch = ds->index;
dst->cpu_port = index;
}
printk(“geng-dsa2.c-46\n”);
tag_protocol = ds->ops->get_tag_protocol(ds);
dst->tag_ops = dsa_resolve_tag_protocol(tag_protocol);
if (IS_ERR(dst->tag_ops)) {
dev_warn(ds->dev, “No tagger for this switch\n”);
return PTR_ERR(dst->tag_ops);
}
dst->rcv = dst->tag_ops->rcv;
return 0;
}
dmesg.log (67.9 KB)
