linux-kernel - [PATCH 07/19] clk: fixed-factor: add clk_hw_register_fixed_factor_with

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Message-Id: <20250903-clk-eyeq7-v1-7-3f5024b5d6e2@bootlin.com>
Date: Wed, 03 Sep 2025 14:47:14 +0200
From: Benoît Monin <benoit.monin@...tlin.com>
To: Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>, 
 Gregory CLEMENT <gregory.clement@...tlin.com>, 
 Théo Lebrun <theo.lebrun@...tlin.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 linux-mips@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 Tawfik Bayouk <tawfik.bayouk@...ileye.com>, 
 Sari Khoury <sari.khoury@...ileye.com>, 
 Benoît Monin <benoit.monin@...tlin.com>
Subject: [PATCH 07/19] clk: fixed-factor: add
 clk_hw_register_fixed_factor_with_accuracy

Add a variant of clk_hw_register_fixed_factor allowing to set the
accuracy of the fixed factor clock.

This function allows declaring a fixed factor with a known accuracy
and a parent clock by name.

Signed-off-by: Benoît Monin <benoit.monin@...tlin.com>
---
 drivers/clk/clk-fixed-factor.c | 12 ++++++++++++
 include/linux/clk-provider.h   |  3 +++
 2 files changed, 15 insertions(+)

diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index e62ae8794d445f685156276d5135448f340fca3f..7c76658a725f9b268da2485769979e5ba213d25b 100644
--- a/drivers/clk/clk-fixed-factor.c
+++ b/drivers/clk/clk-fixed-factor.c
@@ -217,6 +217,18 @@ struct clk_hw *clk_hw_register_fixed_factor(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(clk_hw_register_fixed_factor);
 
+struct clk_hw *clk_hw_register_fixed_factor_with_accuracy(struct device *dev,
+		const char *name, const char *parent_name, unsigned long flags,
+		unsigned int mult, unsigned int div, unsigned long acc)
+{
+	const struct clk_parent_data pdata = { .index = -1 };
+
+	return __clk_hw_register_fixed_factor(dev, NULL, name, parent_name, NULL,
+					      &pdata, flags, mult, div, acc,
+					      CLK_FIXED_FACTOR_FIXED_ACCURACY, false);
+}
+EXPORT_SYMBOL_GPL(clk_hw_register_fixed_factor_with_accuracy);
+
 struct clk_hw *clk_hw_register_fixed_factor_fwname(struct device *dev,
 		struct device_node *np, const char *name, const char *fw_name,
 		unsigned long flags, unsigned int mult, unsigned int div)
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 630705a47129453c241f1b1755f2c2f2a7ed8f77..6b3e426f5754bfae4af89765bf5abd2954ca49dc 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -1153,6 +1153,9 @@ void clk_unregister_fixed_factor(struct clk *clk);
 struct clk_hw *clk_hw_register_fixed_factor(struct device *dev,
 		const char *name, const char *parent_name, unsigned long flags,
 		unsigned int mult, unsigned int div);
+struct clk_hw *clk_hw_register_fixed_factor_with_accuracy(struct device *dev,
+		const char *name, const char *parent_name, unsigned long flags,
+		unsigned int mult, unsigned int div, unsigned long acc);
 struct clk_hw *clk_hw_register_fixed_factor_fwname(struct device *dev,
 		struct device_node *np, const char *name, const char *fw_name,
 		unsigned long flags, unsigned int mult, unsigned int div);

-- 
2.51.0