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drivers/mtd/m25px.c: add support for MT25Q256 SPI NOR

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Jani Paalijarvi 2021-10-01 09:06:20 +03:00 committed by Xiang Xiao
parent df40531a07
commit 2e94631da4
1 changed files with 32 additions and 1 deletions
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33
drivers/mtd/m25px.c
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@ -83,6 +83,10 @@
# define CONFIG_MT25Q_MEMORY_TYPE 0xBA
#endif
#ifndef CONFIG_MT25QU_MEMORY_TYPE
# define CONFIG_MT25QU_MEMORY_TYPE 0xBB
#endif
/* M25P Registers ***********************************************************/
/* Identification register values */
@ -90,6 +94,7 @@
#define M25P_MANUFACTURER CONFIG_M25P_MANUFACTURER
#define M25P_MEMORY_TYPE CONFIG_M25P_MEMORY_TYPE
#define MT25Q_MEMORY_TYPE CONFIG_MT25Q_MEMORY_TYPE
#define MT25QU_MEMORY_TYPE CONFIG_MT25QU_MEMORY_TYPE
#define M25P_RES_ID 0x13
#define M25P_M25P1_CAPACITY 0x11 /* 1 M-bit */
#define M25P_EN25F80_CAPACITY 0x14 /* 8 M-bit */
@ -98,6 +103,7 @@
#define M25P_M25P64_CAPACITY 0x17 /* 64 M-bit */
#define M25P_M25P128_CAPACITY 0x18 /* 128 M-bit */
#define M25P_MT25Q128_CAPACITY 0x18 /* 128 M-bit */
#define M25P_MT25Q256_CAPACITY 0x19 /* 256 M-bit */
#define M25P_MT25Q1G_CAPACITY 0x21 /* 1 G-bit */
/* M25P1 capacity is 131,072 bytes:
@ -175,6 +181,17 @@
#define M25P_MT25Q128_NPAGES 65536
#define M25P_MT25Q128_SUBSECT_SHIFT 12 /* Sub-Sector size 1 << 12 = 4,096 */
/* MT25Q256 capacity is 33,554,432 bytes:
* (512 sectors) * (65,536 bytes per sector)
* (131072 pages) * (256 bytes per page)
*/
#define M25P_MT25Q256_SECTOR_SHIFT 16 /* Sector size 1 << 16 = 65,536 */
#define M25P_MT25Q256_NSECTORS 512
#define M25P_MT25Q256_PAGE_SHIFT 8 /* Page size 1 << 8 = 256 */
#define M25P_MT25Q256_NPAGES 131072
#define M25P_MT25Q256_SUBSECT_SHIFT 12 /* Sub-Sector size 1 << 12 = 4,096 */
/* MT25Q1G capacity is 134,217,728 bytes:
* (2048 sectors) * (65,536 bytes per sector)
* (524288 pages) * (256 bytes per page)
@ -454,7 +471,8 @@ static inline int m25p_readid(struct m25p_dev_s *priv)
return OK;
}
}
else if (manufacturer == M25P_MANUFACTURER && memory == MT25Q_MEMORY_TYPE)
else if (manufacturer == M25P_MANUFACTURER &&
(memory == MT25Q_MEMORY_TYPE || memory == MT25QU_MEMORY_TYPE))
{
/* Also okay.. is it a FLASH capacity that we understand? */
@ -471,6 +489,19 @@ static inline int m25p_readid(struct m25p_dev_s *priv)
priv->npages = M25P_MT25Q128_NPAGES;
#ifdef CONFIG_M25P_SUBSECTOR_ERASE
priv->subsectorshift = M25P_MT25Q128_SUBSECT_SHIFT;
#endif
return OK;
}
else if (capacity == M25P_MT25Q256_CAPACITY)
{
/* Save the FLASH geometry */
priv->sectorshift = M25P_MT25Q256_SECTOR_SHIFT;
priv->nsectors = M25P_MT25Q256_NSECTORS;
priv->pageshift = M25P_MT25Q256_PAGE_SHIFT;
priv->npages = M25P_MT25Q256_NPAGES;
#ifdef CONFIG_M25P_SUBSECTOR_ERASE
priv->subsectorshift = M25P_MT25Q256_SUBSECT_SHIFT;
#endif
return OK;
}