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From: "Peng Fan (OSS)" <peng.fan@oss.nxp.com>
Date: Sun, 05 May 2024 11:47:18 +0800
Subject: [PATCH v4 2/3] pinctrl: scmi: add blocklist
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Message-Id: <20240505-pinctrl-scmi-oem-v3-v4-2-7c99f989e9ba@nxp.com>
References: <20240505-pinctrl-scmi-oem-v3-v4-0-7c99f989e9ba@nxp.com>
In-Reply-To: <20240505-pinctrl-scmi-oem-v3-v4-0-7c99f989e9ba@nxp.com>
To: Sudeep Holla <sudeep.holla@arm.com>, 
 Cristian Marussi <cristian.marussi@arm.com>, Rob Herring <robh@kernel.org>, 
 Krzysztof Kozlowski <krzk+dt@kernel.org>, 
 Conor Dooley <conor+dt@kernel.org>, Shawn Guo <shawnguo@kernel.org>, 
 Sascha Hauer <s.hauer@pengutronix.de>, 
 Pengutronix Kernel Team <kernel@pengutronix.de>, 
 Fabio Estevam <festevam@gmail.com>, 
 Linus Walleij <linus.walleij@linaro.org>, 
 Dong Aisheng <aisheng.dong@nxp.com>, Jacky Bai <ping.bai@nxp.com>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, 
 linux-kernel@vger.kernel.org, imx@lists.linux.dev, 
 linux-gpio@vger.kernel.org, Peng Fan <peng.fan@nxp.com>
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From: Peng Fan <peng.fan@nxp.com>

i.MX95 will have its own pinctrl scmi driver, so need block
pinctrl-scmi driver for i.MX95, otherwise there will be two pinctrl
devices for a single scmi protocol@19.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/pinctrl/pinctrl-scmi.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-scmi.c b/drivers/pinctrl/pinctrl-scmi.c
index 036bc1e3fc6c..331ca20ac68b 100644
--- a/drivers/pinctrl/pinctrl-scmi.c
+++ b/drivers/pinctrl/pinctrl-scmi.c
@@ -11,6 +11,7 @@
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
+#include <linux/of.h>
 #include <linux/scmi_protocol.h>
 #include <linux/slab.h>
 #include <linux/types.h>
@@ -504,6 +505,11 @@ static int pinctrl_scmi_get_pins(struct scmi_pinctrl *pmx,
 	return 0;
 }
 
+static const struct of_device_id scmi_pinctrl_blocklist[] = {
+	{ .compatible = "fsl,imx95", },
+	{ }
+};
+
 static int scmi_pinctrl_probe(struct scmi_device *sdev)
 {
 	int ret;
@@ -511,10 +517,14 @@ static int scmi_pinctrl_probe(struct scmi_device *sdev)
 	struct scmi_pinctrl *pmx;
 	const struct scmi_handle *handle;
 	struct scmi_protocol_handle *ph;
+	struct device_node *np __free(device_node) = of_find_node_by_path("/");
 
 	if (!sdev->handle)
 		return -EINVAL;
 
+	if (of_match_node(scmi_pinctrl_blocklist, np))
+		return -ENODEV;
+
 	handle = sdev->handle;
 
 	pinctrl_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_PINCTRL, &ph);

-- 
2.37.1