linux-kernel - [PATCH v2 05/10] clk: en7523: permit to reference Chip SCU from phandle

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Message-ID: <20250617130455.32682-6-ansuelsmth@gmail.com>
Date: Tue, 17 Jun 2025 15:04:48 +0200
From: Christian Marangi <ansuelsmth@...il.com>
To: Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Felix Fietkau <nbd@....name>,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Christian Marangi <ansuelsmth@...il.com>
Subject: [PATCH v2 05/10] clk: en7523: permit to reference Chip SCU from phandle

In preparation for support of AN7583 and to make Chip SCU reference more
robust, permit to reference the Chip SCU syscon regmap also with the
"airoha,chip-scu" property in DT.

Legacy implementation is kept by fallbacking in the absence of
"airoha,chip-scu" property.

Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
 drivers/clk/clk-en7523.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk-en7523.c b/drivers/clk/clk-en7523.c
index 54c0462c0dee..a768ba71feec 100644
--- a/drivers/clk/clk-en7523.c
+++ b/drivers/clk/clk-en7523.c
@@ -846,11 +846,16 @@ static int en7581_clk_hw_init(struct platform_device *pdev,
 			      const struct en_clk_soc_data *soc_data,
 			      struct clk_hw_onecell_data *clk_data)
 {
+	struct device *dev = &pdev->dev;
 	struct regmap *map, *clk_map;
 	void __iomem *base;
 	int err;
 
-	map = syscon_regmap_lookup_by_compatible("airoha,en7581-chip-scu");
+	if (of_property_present(dev->of_node, "airoha,chip-scu"))
+		map = syscon_regmap_lookup_by_phandle(dev->of_node,
+						      "airoha,chip-scu");
+	else
+		map = syscon_regmap_lookup_by_compatible("airoha,en7581-chip-scu");
 	if (IS_ERR(map))
 		return PTR_ERR(map);
 
-- 
2.48.1