linux-kernel - [PATCH RESEND V6 3/3] firmware: imx: imx-scu: register build-in child devices

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Message-ID: <1551756791-31401-3-git-send-email-Anson.Huang@nxp.com>
Date:   Tue, 5 Mar 2019 03:38:08 +0000
From:   Anson Huang <anson.huang@....com>
To:     "catalin.marinas@....com" <catalin.marinas@....com>,
        "will.deacon@....com" <will.deacon@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "wim@...ux-watchdog.org" <wim@...ux-watchdog.org>,
        "linux@...ck-us.net" <linux@...ck-us.net>,
        Andy Gross <andy.gross@...aro.org>,
        "heiko@...ech.de" <heiko@...ech.de>,
        "arnd@...db.de" <arnd@...db.de>,
        "horms+renesas@...ge.net.au" <horms+renesas@...ge.net.au>,
        "bjorn.andersson@...aro.org" <bjorn.andersson@...aro.org>,
        "jagan@...rulasolutions.com" <jagan@...rulasolutions.com>,
        "enric.balletbo@...labora.com" <enric.balletbo@...labora.com>,
        "marc.w.gonzalez@...e.fr" <marc.w.gonzalez@...e.fr>,
        "olof@...om.net" <olof@...om.net>,
        Aisheng Dong <aisheng.dong@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-watchdog@...r.kernel.org" <linux-watchdog@...r.kernel.org>
CC:     dl-linux-imx <linux-imx@....com>
Subject: [PATCH RESEND V6 3/3] firmware: imx: imx-scu: register build-in child
 devices

For some devices which are controlled by system controller,
they are NOT present in device tree since no hardware info
needed, just register these devices as children of SCU device.
This patch registers i.MX system controller watchdog platform
device as child device of SCU.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
New added patch, it is to register SCU build-in child devices what are NOT in device tree.
---
 drivers/firmware/imx/imx-scu.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/firmware/imx/imx-scu.c b/drivers/firmware/imx/imx-scu.c
index 2bb1a19..df75ead 100644
--- a/drivers/firmware/imx/imx-scu.c
+++ b/drivers/firmware/imx/imx-scu.c
@@ -196,6 +196,7 @@ EXPORT_SYMBOL(imx_scu_call_rpc);
 
 static int imx_scu_probe(struct platform_device *pdev)
 {
+	struct platform_device *child_pdev;
 	struct device *dev = &pdev->dev;
 	struct imx_sc_ipc *sc_ipc;
 	struct imx_sc_chan *sc_chan;
@@ -248,6 +249,13 @@ static int imx_scu_probe(struct platform_device *pdev)
 
 	dev_info(dev, "NXP i.MX SCU Initialized\n");
 
+	/* register SCU child devices which are NOT in device tree */
+	child_pdev = platform_device_register_data(dev, "imx-sc-wdt",
+				PLATFORM_DEVID_NONE, NULL, 0);
+	if (IS_ERR(child_pdev))
+		dev_warn(dev, "failed to register scu watchdog device %ld!\n",
+			 PTR_ERR(child_pdev));
+
 	return devm_of_platform_populate(dev);
 }
 
-- 
2.7.4