realtek: mdio: add 10G polling comment

Make clear that the hardware design always uses the same type
of 10G phys. So it is uncritical that the polling values are
overwritten multiple times.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/23204
Signed-off-by: Robert Marko <robimarko@gmail.com>

diff --git a/target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c b/target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c
index 6be60c9b42b84e12b6c3d9992ace74f4f7b91a51..9889b62e3ebd0979ffc963fd596a2774db8cd263 100644 (file)
--- a/target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c
+++ b/target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c
@@ -792,7 +792,7 @@ static void rtmdio_930x_setup_polling(struct rtmdio_ctrl *ctrl)
                regmap_assign_bits(ctrl->map, RTMDIO_930X_SMI_PRVTE_POLLING_CTRL,
                                   BIT(pn), phyinfo.has_giga_lite);
 
-               /* special duplex/advertisement polling registers */
+               /* Unique 10G polling setup enforced by hardware design. Always same 10G PHYs. */
                if (phyinfo.poll_duplex || phyinfo.poll_adv_1000 || phyinfo.poll_lpa_1000) {
                        regmap_write(ctrl->map, RTMDIO_930X_SMI_10G_POLLING_REG0_CFG, phyinfo.poll_duplex);
                        regmap_write(ctrl->map, RTMDIO_930X_SMI_10G_POLLING_REG9_CFG, phyinfo.poll_adv_1000);
@@ -865,7 +865,7 @@ static void rtmdio_931x_setup_polling(struct rtmdio_ctrl *ctrl)
                regmap_assign_bits(ctrl->map, RTMDIO_931X_SMI_GLB_CTRL1,
                                   BIT(smi_bus * 2), phyinfo.force_res);
 
-               /* special polling registers */
+               /* Unique 10G polling setup enforced by hardware design. Always same 10G PHYs. */
                if (phyinfo.poll_duplex || phyinfo.poll_adv_1000 || phyinfo.poll_lpa_1000) {
                        regmap_write(ctrl->map, RTMDIO_931X_SMI_10GPHY_POLLING_SEL2, phyinfo.poll_duplex);
                        regmap_write(ctrl->map, RTMDIO_931X_SMI_10GPHY_POLLING_SEL3, phyinfo.poll_adv_1000);