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mtd: rawnand: ifc: set chip->of_node to nand@0 child node if present

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The nand-controller.yaml binding requires a child node (e.g. nand@0) under
the NAND controller. However, the driver currently assigns the controller's
of_node directly to the NAND chip.

Search for the first child node with the "nand" prefix and assign it to
chip->of_node. This filters out properties such as "partition" that may be
placed under the controller node in some older DTS files.

Fall back to using the controller's of_node if no suitable child node is
found to maintain backward compatibility.

This issue went unnoticed because the default behavior works for most NAND
chips.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Frank Li 2026-03-10 15:07:39 -04:00 committed by Miquel Raynal
parent f7bd1948a5
commit ee78d466db
1 changed files with 9 additions and 1 deletions
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10
drivers/mtd/nand/raw/fsl_ifc_nand.c
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@ -7,6 +7,7 @@
* Author: Dipen Dudhat <Dipen.Dudhat@freescale.com>
*/
#include <linux/cleanup.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/types.h>
@ -863,7 +864,14 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
/* Fill in fsl_ifc_mtd structure */
mtd->dev.parent = priv->dev;
nand_set_flash_node(chip, priv->dev->of_node);
struct device_node *np __free(device_node) =
of_get_next_child_with_prefix(priv->dev->of_node, NULL, "nand");
if (np)
nand_set_flash_node(chip, np);
else
nand_set_flash_node(chip, priv->dev->of_node);
/* fill in nand_chip structure */
/* set up function call table */