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6a217d6d72
It's meant to provide upstream support for mtd & NVMEM. It's required
e.g. for reading MAC address from mtd partition content. It seems to be
in a final shape so it's worth testing.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit e90e75b12c)
55 lines
1.7 KiB
Diff
55 lines
1.7 KiB
Diff
From f32bc2aa01edcba2f2ed5db151cf183eac9ef919 Mon Sep 17 00:00:00 2001
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From: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
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Date: Sat, 25 Feb 2017 16:42:50 +0000
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Subject: mtd: nor: support mtd name from device tree
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Signed-off-by: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
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---
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drivers/mtd/spi-nor/spi-nor.c | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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--- a/drivers/mtd/spi-nor/spi-nor.c
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+++ b/drivers/mtd/spi-nor/spi-nor.c
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@@ -4938,6 +4938,7 @@ int spi_nor_scan(struct spi_nor *nor, co
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struct mtd_info *mtd = &nor->mtd;
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struct device_node *np = spi_nor_get_flash_node(nor);
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struct spi_nor_flash_parameter *params = &nor->params;
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+ const char __maybe_unused *of_mtd_name = NULL;
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int ret;
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int i;
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@@ -5000,7 +5001,12 @@ int spi_nor_scan(struct spi_nor *nor, co
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/* Init flash parameters based on flash_info struct and SFDP */
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spi_nor_init_params(nor);
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- if (!mtd->name)
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+#ifdef CONFIG_MTD_OF_PARTS
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+ of_property_read_string(np, "linux,mtd-name", &of_mtd_name);
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+#endif
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+ if (of_mtd_name)
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+ mtd->name = of_mtd_name;
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+ else if (!mtd->name)
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mtd->name = dev_name(dev);
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mtd->priv = nor;
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mtd->type = MTD_NORFLASH;
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--- a/drivers/mtd/mtdcore.c
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+++ b/drivers/mtd/mtdcore.c
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@@ -779,6 +779,17 @@ out_error:
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*/
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static void mtd_set_dev_defaults(struct mtd_info *mtd)
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{
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+#ifdef CONFIG_MTD_OF_PARTS
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+ const char __maybe_unused *of_mtd_name = NULL;
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+ struct device_node *np;
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+
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+ np = mtd_get_of_node(mtd);
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+ if (np && !mtd->name) {
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+ of_property_read_string(np, "linux,mtd-name", &of_mtd_name);
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+ if (of_mtd_name)
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+ mtd->name = of_mtd_name;
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+ } else
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+#endif
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if (mtd->dev.parent) {
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if (!mtd->owner && mtd->dev.parent->driver)
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mtd->owner = mtd->dev.parent->driver->owner;
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