diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index e90e13c5d7f2..dbbbfdc73848 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -4437,6 +4437,16 @@ static struct rockchip_pin_ctrl *rockchip_pinctrl_get_soc_data(
 	pmu_offs = ctrl->pmu_mux_offset;
 	drv_pmu_offs = ctrl->pmu_drv_offset;
 	drv_grf_offs = ctrl->grf_drv_offset;
+
+	/*
+	 * This function mutates the static per-SoC data. Most of it is
+	 * idempotent: recalculated iomux and drv offsets anchor at the
+	 * values calculated by a previous run. The pin count is not, so
+	 * reset it here; otherwise it accumulates when the probe runs
+	 * again after a probe deferral, shifting every bank's pin_base.
+	 */
+	ctrl->nr_pins = 0;
+
 	bank = ctrl->pin_banks;
 	for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
 		int bank_pins = 0;