linux-kernel - [PATCH v8 07/10] pinctrl: s32cc: skip syscon child nodes when parsing funcs and groups

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Message-ID: <20260120115923.3463866-8-khristineandreea.barbulescu@oss.nxp.com>
Date: Tue, 20 Jan 2026 13:59:19 +0200
From: Khristine Andreea Barbulescu <khristineandreea.barbulescu@....nxp.com>
To: Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chester Lin <chester62515@...il.com>,
	Matthias Brugger <mbrugger@...e.com>,
	Ghennadi Procopciuc <ghennadi.procopciuc@....com>,
	Larisa Grigore <larisa.grigore@....com>,
	Lee Jones <lee@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Dong Aisheng <aisheng.dong@....com>,
	Jacky Bai <ping.bai@....com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>
Cc: Alberto Ruiz <aruizrui@...hat.com>,
	Christophe Lizzi <clizzi@...hat.com>,
	devicetree@...r.kernel.org,
	Enric Balletbo <eballetb@...hat.com>,
	Eric Chanudet <echanude@...hat.com>,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	NXP S32 Linux Team <s32@....com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	"Vincent Guittot devicetree @ vger . kernel . org" <vincent.guittot@...aro.org>
Subject: [PATCH v8 07/10] pinctrl: s32cc: skip syscon child nodes when parsing funcs and groups

The SIUL2 node contains child nodes for syscon
instances (SIUL2_0 and SIUL2_1) to expose register
ranges for SoC information. These nodes are not
part of the pinctrl configuration and should not
be treated as pinctrl functions or groups.

Signed-off-by: Khristine Andreea Barbulescu <khristineandreea.barbulescu@....nxp.com>
---
 drivers/pinctrl/nxp/pinctrl-s32cc.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/nxp/pinctrl-s32cc.c b/drivers/pinctrl/nxp/pinctrl-s32cc.c
index cdd3a1cd4fe5..50d5a01107eb 100644
--- a/drivers/pinctrl/nxp/pinctrl-s32cc.c
+++ b/drivers/pinctrl/nxp/pinctrl-s32cc.c
@@ -2,7 +2,7 @@
 /*
  * Core driver for the S32 CC (Common Chassis) pin controller
  *
- * Copyright 2017-2022,2024-2025 NXP
+ * Copyright 2017-2022,2024-2025-2026 NXP
  * Copyright (C) 2022 SUSE LLC
  * Copyright 2015-2016 Freescale Semiconductor, Inc.
  */
@@ -832,6 +832,9 @@ static int s32_pinctrl_parse_functions(struct device_node *np,
 
 	dev_dbg(info->dev, "parse function(%u): %pOFn\n", index, np);
 
+	if (of_device_is_compatible(np, "syscon"))
+		return 0;
+
 	func = &info->functions[index];
 
 	/* Initialise function */
@@ -941,7 +944,8 @@ static int s32_pinctrl_probe_dt(struct platform_device *pdev,
 		return -ENODEV;
 
 	for_each_child_of_node_scoped(np, child)
-		++nfuncs;
+		if (!of_device_is_compatible(child, "syscon"))
+			++nfuncs;
 	if (nfuncs <= 0)
 		return dev_err_probe(&pdev->dev, -EINVAL,
 				     "No functions defined\n");
@@ -962,6 +966,9 @@ static int s32_pinctrl_probe_dt(struct platform_device *pdev,
 		return -ENOMEM;
 
 	for_each_child_of_node_scoped(np, child) {
+		if (of_device_is_compatible(child, "syscon"))
+			continue;
+
 		ret = s32_pinctrl_parse_functions(child, info, i++);
 		if (ret)
 			return ret;
-- 
2.50.1