pps: do not blink PPS when a slave has no link

dev/pps_gen.c

@@ -43,7 +43,7 @@ void shw_pps_gen_init()
 
 	ppsg_write(CR, cr | PPSG_CR_CNT_SET);
 	ppsg_write(CR, cr);
-	ppsg_write(ESCR, 0x6);	/* enable PPS output */
+	ppsg_write(ESCR, 0);	/* disable PPS output */
 }
 
 /* Adjusts the nanosecond (refclk cycle) counter by atomically adding (how_much) cycles. */

wrc_main.c

@@ -258,8 +258,10 @@ int main(void)
 			break;
 
 		case LINK_WENT_DOWN:
-			if (wrc_ptp_get_mode() == WRC_MODE_SLAVE)
+			if (wrc_ptp_get_mode() == WRC_MODE_SLAVE) {
 				spll_init(SPLL_MODE_FREE_RUNNING_MASTER, 0, 1);
+				shw_pps_gen_enable_output(0);
+			}
 			break;
 		}