cpsw: add a DT field for the active time stamping port
Because time stamping on both external ports of the switch simultaneously
is positively useless from the application's point of view, this patch
provides a DT configuration method to choose the active port.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index f1af5e0..f165791 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -847,6 +847,13 @@
}
data->slaves = prop;
+ if (of_property_read_u32(node, "cpts_active_slave", &prop)) {
+ pr_err("Missing cpts_active_slave property in the DT.\n");
+ ret = -EINVAL;
+ goto error_ret;
+ }
+ data->cpts_active_slave = prop;
+
data->slave_data = kzalloc(sizeof(struct cpsw_slave_data) *
data->slaves, GFP_KERNEL);
if (!data->slave_data) {