cpts: specify the input clock frequency via DT
This patch adds a way to configure the CPTS input clock scaling factors
via the device tree.
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 f165791..c04627c 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -854,6 +854,20 @@
}
data->cpts_active_slave = prop;
+ if (of_property_read_u32(node, "cpts_clock_mult", &prop)) {
+ pr_err("Missing cpts_clock_mult property in the DT.\n");
+ ret = -EINVAL;
+ goto error_ret;
+ }
+ data->cpts_clock_mult = prop;
+
+ if (of_property_read_u32(node, "cpts_clock_shift", &prop)) {
+ pr_err("Missing cpts_clock_shift property in the DT.\n");
+ ret = -EINVAL;
+ goto error_ret;
+ }
+ data->cpts_clock_shift = prop;
+
data->slave_data = kzalloc(sizeof(struct cpsw_slave_data) *
data->slaves, GFP_KERNEL);
if (!data->slave_data) {