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-rw-r--r--include/linux/pse-pd/pse.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/pse-pd/pse.h b/include/linux/pse-pd/pse.h
index e5f305cef82e..4e5696cfade7 100644
--- a/include/linux/pse-pd/pse.h
+++ b/include/linux/pse-pd/pse.h
@@ -159,7 +159,13 @@ struct ethtool_pse_control_status {
/**
* struct pse_controller_ops - PSE controller driver callbacks
*
- * @setup_pi_matrix: setup PI matrix of the PSE controller
+ * @setup_pi_matrix: Setup PI matrix of the PSE controller.
+ * The PSE PIs devicetree nodes have already been parsed by
+ * of_load_pse_pis() and the pcdev->pi[x]->pairset[y].np
+ * populated. This callback should establish the
+ * relationship between the PSE controller hardware ports
+ * and the PSE Power Interfaces, either through software
+ * mapping or hardware configuration.
* @pi_get_admin_state: Get the operational state of the PSE PI. This ops
* is mandatory.
* @pi_get_pw_status: Get the power detection status of the PSE PI. This