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| author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2022-07-03 01:12:22 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-09-20 10:06:49 +0200 |
| commit | bfc618fcc3f167ad082053e81e9d664e724c6288 (patch) | |
| tree | f2e8f10ced438a7d5e249714c59bdde18f9552df /drivers/mtd | |
| parent | 9fac2a193e4553d6ce093a626ef5920c362d0753 (diff) | |
| download | linux-stable-bfc618fcc3f167ad082053e81e9d664e724c6288.tar.gz linux-stable-bfc618fcc3f167ad082053e81e9d664e724c6288.tar.bz2 linux-stable-bfc618fcc3f167ad082053e81e9d664e724c6288.zip | |
mtd: rawnand: intel: Read the chip-select line from the correct OF node
The chip select has to be read from the flash node which is a child node
of the NAND controller.
Fixes: 0b1039f016e8a3 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220702231227.1579176-4-martin.blumenstingl@googlemail.com
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/raw/intel-nand-controller.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/mtd/nand/raw/intel-nand-controller.c b/drivers/mtd/nand/raw/intel-nand-controller.c index e91b879b32bd..3df3f32423f9 100644 --- a/drivers/mtd/nand/raw/intel-nand-controller.c +++ b/drivers/mtd/nand/raw/intel-nand-controller.c @@ -16,6 +16,7 @@ #include <linux/mtd/rawnand.h> #include <linux/mtd/nand.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/sched.h> #include <linux/slab.h> @@ -580,6 +581,7 @@ static int ebu_nand_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct ebu_nand_controller *ebu_host; + struct device_node *chip_np; struct nand_chip *nand; struct mtd_info *mtd; struct resource *res; @@ -604,7 +606,12 @@ static int ebu_nand_probe(struct platform_device *pdev) if (IS_ERR(ebu_host->hsnand)) return PTR_ERR(ebu_host->hsnand); - ret = device_property_read_u32(dev, "reg", &cs); + chip_np = of_get_next_child(dev->of_node, NULL); + if (!chip_np) + return dev_err_probe(dev, -EINVAL, + "Could not find child node for the NAND chip\n"); + + ret = of_property_read_u32(chip_np, "reg", &cs); if (ret) { dev_err(dev, "failed to get chip select: %d\n", ret); return ret; @@ -660,7 +667,7 @@ static int ebu_nand_probe(struct platform_device *pdev) writel(ebu_host->cs[cs].addr_sel | EBU_ADDR_MASK(5) | EBU_ADDR_SEL_REGEN, ebu_host->ebu + EBU_ADDR_SEL(cs)); - nand_set_flash_node(&ebu_host->chip, dev->of_node); + nand_set_flash_node(&ebu_host->chip, chip_np); mtd = nand_to_mtd(&ebu_host->chip); if (!mtd->name) { |