linux-kernel - [PATCH RFC 02/16] pinctrl: aspeed: g5: Constrain LPC binding revision workaround to AST2500

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Message-Id: <20251211-dev-dt-warnings-all-v1-2-21b18b9ada77@codeconstruct.com.au>
Date: Thu, 11 Dec 2025 17:45:44 +0900
From: Andrew Jeffery <andrew@...econstruct.com.au>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Linus Walleij <linusw@...nel.org>
Cc: Joel Stanley <joel@....id.au>, linux-hwmon@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org, 
 openbmc@...ts.ozlabs.org, linux-gpio@...r.kernel.org, 
 linux-mmc@...r.kernel.org, linux-crypto@...r.kernel.org, 
 linux-iio@...r.kernel.org, Andrew Jeffery <andrew@...econstruct.com.au>
Subject: [PATCH RFC 02/16] pinctrl: aspeed: g5: Constrain LPC binding
 revision workaround to AST2500

Discovering a phandle to an AST2400 or AST2600 LPC node indicates an
error for the purpose of the AST2500 pinctrl driver.

Signed-off-by: Andrew Jeffery <andrew@...econstruct.com.au>
---
 drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c b/drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c
index 792089628362..d4c364d19d64 100644
--- a/drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c
+++ b/drivers/pinctrl/aspeed/pinctrl-aspeed-g5.c
@@ -2654,9 +2654,7 @@ static struct regmap *aspeed_g5_acquire_regmap(struct aspeed_pinmux_data *ctx,
 		np = of_parse_phandle(ctx->dev->of_node,
 					"aspeed,external-nodes", 1);
 		if (np) {
-			if (!of_device_is_compatible(np->parent, "aspeed,ast2400-lpc-v2") &&
-			    !of_device_is_compatible(np->parent, "aspeed,ast2500-lpc-v2") &&
-			    !of_device_is_compatible(np->parent, "aspeed,ast2600-lpc-v2"))
+			if (!of_device_is_compatible(np->parent, "aspeed,ast2500-lpc-v2"))
 				return ERR_PTR(-ENODEV);
 
 			map = syscon_node_to_regmap(np->parent);

-- 
2.47.3