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authorMartin Blumenstingl <martin.blumenstingl@googlemail.com>2022-07-03 02:12:22 +0300
committerMiquel Raynal <miquel.raynal@bootlin.com>2022-09-20 11:06:49 +0300
commitbfc618fcc3f167ad082053e81e9d664e724c6288 (patch)
treef2e8f10ced438a7d5e249714c59bdde18f9552df /drivers/mtd
parent9fac2a193e4553d6ce093a626ef5920c362d0753 (diff)
downloadlinux-bfc618fcc3f167ad082053e81e9d664e724c6288.tar.xz
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.c11
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) {