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mtd: spi: spi-nor-core: Add SST vendor specific SFDP parser

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JESD216 allow vendors to define their own SFDP tables.

Add SST SFDP parser. The vendor table is allocated using resource-managed
kmalloc - the table will be freed on driver detach. It will be accessible
by getting the UCLASS_SPI_FLASH's private data.

The SST's SFDP table is particularly of interest because contains
pre-programmed globally unique EUI-48 and EUI-64 identifiers.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Tudor Ambarus 2019-11-13 15:42:52 +00:00 • committed by Eugen Hristev
parent ef7c2af659
commit a11c081da3
2 changed files with 46 additions and 2 deletions
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2
include/linux/mtd/spi-nor.h
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@ -261,6 +261,7 @@ struct flash_info;
* @lock: the lock for the read/write/erase/lock/unlock operations
* @dev: point to a spi device, or a spi nor controller device.
* @info: spi-nor part JDEC MFR id and other info
* @manufacturer_sfdp: manufacturer specific SFDP table
* @page_size: the page size of the SPI NOR
* @addr_width: number of address bytes
* @erase_opcode: the opcode for erasing a sector
@ -299,6 +300,7 @@ struct spi_nor {
struct udevice *dev;
struct spi_slave *spi;
const struct flash_info *info;
u8 *manufacturer_sfdp;
u32 page_size;
u8 addr_width;
u8 erase_opcode;