v4.19.13 snapshot.
diff --git a/drivers/clk/sunxi-ng/ccu_gate.c b/drivers/clk/sunxi-ng/ccu_gate.c
new file mode 100644
index 0000000..cd069d5
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu_gate.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2016 Maxime Ripard
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/clk-provider.h>
+
+#include "ccu_gate.h"
+
+void ccu_gate_helper_disable(struct ccu_common *common, u32 gate)
+{
+ unsigned long flags;
+ u32 reg;
+
+ if (!gate)
+ return;
+
+ spin_lock_irqsave(common->lock, flags);
+
+ reg = readl(common->base + common->reg);
+ writel(reg & ~gate, common->base + common->reg);
+
+ spin_unlock_irqrestore(common->lock, flags);
+}
+
+static void ccu_gate_disable(struct clk_hw *hw)
+{
+ struct ccu_gate *cg = hw_to_ccu_gate(hw);
+
+ return ccu_gate_helper_disable(&cg->common, cg->enable);
+}
+
+int ccu_gate_helper_enable(struct ccu_common *common, u32 gate)
+{
+ unsigned long flags;
+ u32 reg;
+
+ if (!gate)
+ return 0;
+
+ spin_lock_irqsave(common->lock, flags);
+
+ reg = readl(common->base + common->reg);
+ writel(reg | gate, common->base + common->reg);
+
+ spin_unlock_irqrestore(common->lock, flags);
+
+ return 0;
+}
+
+static int ccu_gate_enable(struct clk_hw *hw)
+{
+ struct ccu_gate *cg = hw_to_ccu_gate(hw);
+
+ return ccu_gate_helper_enable(&cg->common, cg->enable);
+}
+
+int ccu_gate_helper_is_enabled(struct ccu_common *common, u32 gate)
+{
+ if (!gate)
+ return 1;
+
+ return readl(common->base + common->reg) & gate;
+}
+
+static int ccu_gate_is_enabled(struct clk_hw *hw)
+{
+ struct ccu_gate *cg = hw_to_ccu_gate(hw);
+
+ return ccu_gate_helper_is_enabled(&cg->common, cg->enable);
+}
+
+static unsigned long ccu_gate_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct ccu_gate *cg = hw_to_ccu_gate(hw);
+ unsigned long rate = parent_rate;
+
+ if (cg->common.features & CCU_FEATURE_ALL_PREDIV)
+ rate /= cg->common.prediv;
+
+ return rate;
+}
+
+static long ccu_gate_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ struct ccu_gate *cg = hw_to_ccu_gate(hw);
+ int div = 1;
+
+ if (cg->common.features & CCU_FEATURE_ALL_PREDIV)
+ div = cg->common.prediv;
+
+ if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) {
+ unsigned long best_parent = rate;
+
+ if (cg->common.features & CCU_FEATURE_ALL_PREDIV)
+ best_parent *= div;
+ *prate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent);
+ }
+
+ return *prate / div;
+}
+
+static int ccu_gate_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ /*
+ * We must report success but we can do so unconditionally because
+ * clk_factor_round_rate returns values that ensure this call is a
+ * nop.
+ */
+
+ return 0;
+}
+
+const struct clk_ops ccu_gate_ops = {
+ .disable = ccu_gate_disable,
+ .enable = ccu_gate_enable,
+ .is_enabled = ccu_gate_is_enabled,
+ .round_rate = ccu_gate_round_rate,
+ .set_rate = ccu_gate_set_rate,
+ .recalc_rate = ccu_gate_recalc_rate,
+};