clk: tegra: Add fixed factor peripheral clock type

Some of the peripheral clocks on Tegra are derived from one of the top-
level PLLs with a fixed factor. Support these clocks by implementing the
->enable() and ->disable() callbacks using the peripheral clock register
banks and the ->recalc_rate() by dividing the parent rate by the fixed
factor.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h
index 3ef530a8989d..7264f17e269e 100644
--- a/drivers/clk/tegra/clk.h
+++ b/drivers/clk/tegra/clk.h
@@ -516,6 +516,23 @@ struct clk *tegra_clk_register_periph_gate(const char *name,
 		const char *parent_name, u8 gate_flags, void __iomem *clk_base,
 		unsigned long flags, int clk_num, int *enable_refcnt);
 
+struct tegra_clk_periph_fixed {
+	struct clk_hw hw;
+	void __iomem *base;
+	const struct tegra_clk_periph_regs *regs;
+	unsigned int mul;
+	unsigned int div;
+	unsigned int num;
+};
+
+struct clk *tegra_clk_register_periph_fixed(const char *name,
+					    const char *parent,
+					    unsigned long flags,
+					    void __iomem *base,
+					    unsigned int mul,
+					    unsigned int div,
+					    unsigned int num);
+
 /**
  * struct clk-periph - peripheral clock
  *