linux-kernel - [PATCH 2/5] memory: fsl_ifc: populate child devices without relying on simple-bus

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Message-Id: <20211001000924.15421-3-leoyang.li@nxp.com>
Date:   Thu, 30 Sep 2021 19:09:21 -0500
From:   Li Yang <leoyang.li@....com>
To:     Shawn Guo <shawnguo@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        devicetree@...r.kernel.org, Krzysztof Kozlowski <krzk@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Michael Ellerman <mpe@...erman.id.au>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     Li Yang <leoyang.li@....com>
Subject: [PATCH 2/5] memory: fsl_ifc: populate child devices without relying on simple-bus

After we update the binding to not use simple-bus compatible for the
controller, we need the driver to populate the child devices explicitly.

Signed-off-by: Li Yang <leoyang.li@....com>
---
 drivers/memory/fsl_ifc.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/memory/fsl_ifc.c b/drivers/memory/fsl_ifc.c
index d062c2f8250f..251d713cd50b 100644
--- a/drivers/memory/fsl_ifc.c
+++ b/drivers/memory/fsl_ifc.c
@@ -88,6 +88,7 @@ static int fsl_ifc_ctrl_remove(struct platform_device *dev)
 {
 	struct fsl_ifc_ctrl *ctrl = dev_get_drvdata(&dev->dev);
 
+	of_platform_depopulate(&dev->dev);
 	free_irq(ctrl->nand_irq, ctrl);
 	free_irq(ctrl->irq, ctrl);
 
@@ -285,6 +286,14 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev)
 		}
 	}
 
+	/* legacy dts may still use "simple-bus" compatible */
+	if (!of_device_is_compatible(dev->dev.of_node, "simple-bus")) {
+	        ret = of_platform_populate(dev->dev.of_node, NULL, NULL,
+						&dev->dev);
+		if (ret)
+			goto err_nandirq;
+	}
+
 	return 0;
 
 err_nandirq:
-- 
2.25.1