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--- a/drivers/net/ethernet/mediatek/esw_rt3050.c
+++ b/drivers/net/ethernet/mediatek/esw_rt3050.c
@@ -221,6 +221,8 @@ struct rt305x_esw {
unsigned char port_map;
unsigned char port_disable;
+ unsigned int reg_initval_fct2;
+ unsigned int reg_initval_fpa2;
unsigned int reg_led_polarity;
struct switch_dev swdev;
@@ -452,7 +454,10 @@ static void esw_hw_init(struct rt305x_es
(RT305X_ESW_PORTS_NOCPU << RT305X_ESW_POC2_UNTAG_EN_S)),
RT305X_ESW_REG_POC2);
- esw_w32(esw, 0x0002500c, RT305X_ESW_REG_FCT2);
+ if (esw->reg_initval_fct2)
+ esw_w32(esw, esw->reg_initval_fct2, RT305X_ESW_REG_FCT2);
+ else
+ esw_w32(esw, 0x0002500c, RT305X_ESW_REG_FCT2);
/* 300s aging timer, max packet len 1536, broadcast storm prevention
* disabled, disable collision abort, mac xor48 hash, 10 packet back
@@ -475,7 +480,10 @@ static void esw_hw_init(struct rt305x_es
* port5: disabled
* port6: enabled, gige, full-duplex, rx/tx-flow-control
*/
- esw_w32(esw, 0x3f502b28, RT305X_ESW_REG_FPA2);
+ if (esw->reg_initval_fpa2)
+ esw_w32(esw, esw->reg_initval_fpa2, RT305X_ESW_REG_FPA2);
+ else
+ esw_w32(esw, 0x3f502b28, RT305X_ESW_REG_FPA2);
esw_w32(esw, 0x00000000, RT305X_ESW_REG_FPA);
/* Force Link/Activity on ports */
@@ -1361,6 +1369,14 @@ static int esw_probe(struct platform_dev
if (port_disable)
esw->port_disable = be32_to_cpu(*port_disable);
+ reg_init = of_get_property(np, "ralink,fct2", NULL);
+ if (reg_init)
+ esw->reg_initval_fct2 = be32_to_cpu(*reg_init);
+
+ reg_init = of_get_property(np, "ralink,fpa2", NULL);
+ if (reg_init)
+ esw->reg_initval_fpa2 = be32_to_cpu(*reg_init);
+
reg_init = of_get_property(np, "mediatek,led_polarity", NULL);
if (reg_init)
esw->reg_led_polarity = be32_to_cpu(*reg_init);
@@ -1386,6 +1402,18 @@ static int esw_probe(struct platform_dev
esw_hw_init(esw);
+ reg_init = of_get_property(np, "ralink,rgmii", NULL);
+ if (reg_init && be32_to_cpu(*reg_init) == 1) {
+ /*
+ * External switch connected to RGMII interface.
+ * Unregister the switch device after initialization.
+ */
+ dev_err(&pdev->dev, "RGMII mode, not exporting switch device.\n");
+ unregister_switch(&esw->swdev);
+ platform_set_drvdata(pdev, NULL);
+ return -ENODEV;
+ }
+
ret = devm_request_irq(&pdev->dev, esw->irq, esw_interrupt, 0, "esw",
esw);
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