Commit d8140830 authored by Alexey Korolev's avatar Alexey Korolev Committed by David Woodhouse
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[MTD] LPDDR extended physmap driver to support LPDDR flash 



Physmap is a generic map driver for different platforms and flash types.
We added support of LPDDR to physmap.
All changes here are related to introduction of new pfow_base parameter.
This parameter is valid in case of LPDDR chips only.

Signed-off-by: default avatarAlexey Korolev <akorolev@infradead.org>
Acked-by: default avatarJared Hulbert <jaredeh@gmail.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent d13e51e7

drivers/mtd/maps/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -10,8 +10,8 @@ config MTD_COMPLEX_MAPPINGS 
	  paged mappings of flash chips.



config MTD_PHYSMAP

	tristate "CFI Flash device in physical memory map"

	depends on MTD_CFI || MTD_JEDECPROBE || MTD_ROM

	tristate "Flash device in physical memory map"

	depends on MTD_CFI || MTD_JEDECPROBE || MTD_ROM || MTD_LPDDR

	help

	  This provides a 'mapping' driver which allows the NOR Flash and

	  ROM driver code to communicate with chips which are mapped

drivers/mtd/maps/physmap.c

+7 −1
Original line number Diff line number Diff line
@@ -68,7 +68,12 @@ static int physmap_flash_remove(struct platform_device *dev) 
	return 0;

}



static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL };

static const char *rom_probe_types[] = {

					"cfi_probe",

					"jedec_probe",

					"qinfo_probe",

					"map_rom",

					NULL };

#ifdef CONFIG_MTD_PARTITIONS

static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL };

#endif
@@ -117,6 +122,7 @@ static int physmap_flash_probe(struct platform_device *dev) 
		info->map[i].size = dev->resource[i].end - dev->resource[i].start + 1;

		info->map[i].bankwidth = physmap_data->width;

		info->map[i].set_vpp = physmap_data->set_vpp;

		info->map[i].pfow_base = physmap_data->pfow_base;



		info->map[i].virt = devm_ioremap(&dev->dev, info->map[i].phys,

						 info->map[i].size);

include/linux/mtd/physmap.h

+1 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ struct physmap_flash_data { 
	unsigned int		width;

	void			(*set_vpp)(struct map_info *, int);

	unsigned int		nr_parts;

	unsigned int		pfow_base;

	struct mtd_partition	*parts;

};