From c86a4de8df611b58ec41ae6c42c6fec58e5ab54f Mon Sep 17 00:00:00 2001 From: Patrice Chotard Date: Mon, 21 Mar 2022 09:13:36 +0100 Subject: [PATCH] mtd: Add flash_node in struct mtd_info Currently, add_mtd_partitions_of() can be used only if dev field of mtd_info struct is populated. It's the case, for example, for a spi nor flash, which has a DT compatible "jedec,spi-nor" and an associated device. mtd->dev is populated in spi_nor_scan(). But in case of a raw nand node, mtd_info's dev field can't be populated as flash node has no compatible, so no associated device. add_mtd_partitions_of() can't be used to parse "partitions" subnode. To remove this constraint, add an ofnode field in mtd_info struct which reference the DT flash node. This new field is populated by nand_scan_tail(). This new field will be used by add_mtd_partitions_of() to parse the flash node for "partitions" defined in DT. Signed-off-by: Patrice Chotard Cc: Farhan Ali Cc: Heinrich Schuchardt Cc: Jagan Teki Cc: Marek Behun Cc: Miquel Raynal Cc: Simon Glass Cc: Wolfgang Denk --- drivers/mtd/nand/raw/nand_base.c | 1 + include/linux/mtd/mtd.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index f761698..a007603 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5257,6 +5257,7 @@ int nand_scan_tail(struct mtd_info *mtd) break; } + mtd->flash_node = chip->flash_node; /* Fill in remaining MTD driver data */ mtd->type = nand_is_slc(chip) ? MTD_NANDFLASH : MTD_MLCNANDFLASH; mtd->flags = (chip->options & NAND_ROM) ? MTD_CAP_ROM : diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 7455400..af45e63 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -305,6 +305,7 @@ struct mtd_info { struct device dev; #else struct udevice *dev; + ofnode flash_node; #endif int usecount; -- 2.7.4