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-rw-r--r--include/uapi/linux/dpll.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/dpll.h b/include/uapi/linux/dpll.h
index 5d7ca6a413cd..85b898b1db5e 100644
--- a/include/uapi/linux/dpll.h
+++ b/include/uapi/linux/dpll.h
@@ -129,6 +129,9 @@ enum dpll_type {
* @DPLL_PIN_TYPE_SYNCE_ETH_PORT: ethernet port PHY's recovered clock
* @DPLL_PIN_TYPE_INT_OSCILLATOR: device internal oscillator
* @DPLL_PIN_TYPE_GNSS: GNSS recovered clock
+ * @DPLL_PIN_TYPE_INT_NCO: Device internal numerically controlled oscillator.
+ * When connected as a DPLL input, the DPLL enters NCO mode where the output
+ * frequency is adjusted by the host via the PTP clock interface.
*/
enum dpll_pin_type {
DPLL_PIN_TYPE_MUX = 1,
@@ -136,6 +139,7 @@ enum dpll_pin_type {
DPLL_PIN_TYPE_SYNCE_ETH_PORT,
DPLL_PIN_TYPE_INT_OSCILLATOR,
DPLL_PIN_TYPE_GNSS,
+ DPLL_PIN_TYPE_INT_NCO,
/* private: */
__DPLL_PIN_TYPE_MAX,