mirror of
https://git.openwrt.org/openwrt/openwrt.git
synced 2024-06-18 13:13:55 +02:00
44 lines
1.1 KiB
Diff
44 lines
1.1 KiB
Diff
From 37254e3284f61ea495f73a78b7c8efae983781e2 Mon Sep 17 00:00:00 2001
|
|
From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
|
|
Date: Wed, 7 Nov 2012 14:10:07 +0100
|
|
Subject: sf: eon: add support for 4-byte address mode
|
|
|
|
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
|
|
|
|
--- a/drivers/mtd/spi/eon.c
|
|
+++ b/drivers/mtd/spi/eon.c
|
|
@@ -10,6 +10,8 @@
|
|
|
|
#include "spi_flash_internal.h"
|
|
|
|
+#define EN25XX_EN4B 0xb7 /* Enter 4-byte mode */
|
|
+
|
|
struct eon_spi_flash_params {
|
|
u16 idcode;
|
|
u16 nr_sectors;
|
|
@@ -29,6 +31,13 @@ static const struct eon_spi_flash_params
|
|
},
|
|
};
|
|
|
|
+static __maybe_unused int eon_set_4byte_mode(struct spi_flash *flash)
|
|
+{
|
|
+ struct spi_slave *spi = flash->spi;
|
|
+
|
|
+ return spi_flash_cmd(spi, EN25XX_EN4B, NULL, 0);
|
|
+}
|
|
+
|
|
int spi_flash_probe_eon(struct spi_flash *flash, u8 *idcode)
|
|
{
|
|
const struct eon_spi_flash_params *params;
|
|
@@ -57,5 +66,10 @@ int spi_flash_probe_eon(struct spi_flash
|
|
flash->size = 256 * 16
|
|
* params->nr_sectors;
|
|
|
|
+#ifdef CONFIG_SPI_FLASH_4BYTE_MODE
|
|
+ if (flash->size > (1 << 24))
|
|
+ flash->set_4byte_mode = eon_set_4byte_mode;
|
|
+#endif
|
|
+
|
|
return 1;
|
|
}
|