net: keystone: cpts: add TS_COMP polarity configuration support

This patch adds support of TS_COMP pulse polarity configuration given in
device tree cpts_ts_comp_polarity: 1 - assert high; 0 - assert low.
TS_COMP is used in PPS generation.

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/ethernet/ti/keystone_ethss.c b/drivers/net/ethernet/ti/keystone_ethss.c
index b89bb523e98..016735a1ee3 100644
--- a/drivers/net/ethernet/ti/keystone_ethss.c
+++ b/drivers/net/ethernet/ti/keystone_ethss.c
@@ -3266,6 +3266,10 @@ static int cpsw_probe(struct netcp_device *netcp_device,
                 cpsw_dev->cpts.ts_comp_length = 1;
         }
 
+        if (of_property_read_u32(node, "cpts_ts_comp_polarity",
+                                &cpsw_dev->cpts.ts_comp_polarity))
+                cpsw_dev->cpts.ts_comp_polarity = 1;
+
         if (of_property_read_u32(node, "cpts_clock_mult",
                                 &cpsw_dev->cpts.cc.mult)) {
                 pr_err("Missing cpts_clock_mult property in the DT.\n");