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MTD: Add support for the CPCI405 board

PATCH In review Matthias Fuchs 2 participants 3 messages Jun 14, 2006 – Jun 15, 2006 Memory technology devices (MTD)

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Matthias Fuchs

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#0 lore raw

PATCH 1/1 MTD: Add support for the CPCI405 board

This patch adds MTD support for the NOR flash on CPCI405 boards.

These boards may have different flash chips installed. Some of them are detected by the cfi probing. Others need the jedec_probe support. The patch also adds support for SST39VF3201 chips in jedec_probe.c

The patch is tested with all available flash combinations against the recent mtd-2.6.git repository.

Regards
Matthias

Signed-off-by Matthias Fuchs <[email protected]>
drivers/mtd/chips/jedec_probe.c +17 -0
index 517ea33..f99f73e 100644
@@ -147,6 +147,7 @@ #define SST29LE512	0x003d
 #define SST39LF800	0x2781
 #define SST39LF160	0x2782
 #define SST39VF1601	0x234b
+#define SST39VF3201	0x235b
 #define SST39LF512	0x00D4
 #define SST39LF010	0x00D5
 #define SST39LF020	0x00D6

@@ -1483,6 +1484,22 @@ static const struct amd_flash_info jedec
                }
 
        }, {
+               .mfr_id         = MANUFACTURER_SST,     /* should be CFI */
+               .dev_id         = SST39VF3201,
+               .name           = "SST 39VF3201",
+               .uaddr          = {
+                       [0] = MTD_UADDR_0x5555_0x2AAA,  /* x8 */
+                       [1] = MTD_UADDR_0x5555_0x2AAA   /* x16 */
+               },
+               .DevSize        = SIZE_4MiB,
+               .CmdSet         = P_ID_AMD_STD,
+               .NumEraseRegions= 2,
+               .regions        = {
+                       ERASEINFO(0x1000,512),
+                       ERASEINFO(0x1000,512)
+               }
+
+       }, {
 		.mfr_id		= MANUFACTURER_ST,	/* FIXME - CFI device? */
 		.dev_id		= M29W800DT,
 		.name		= "ST M29W800DT",
drivers/mtd/maps/Kconfig +8 -0
index 6bdaacc..9fd9c25 100644
@@ -323,6 +323,14 @@ config MTD_WALNUT
 	  Walnut board. If you have one of these boards and would like to
 	  use the flash chips on it, say 'Y'.
 
+config MTD_CPCI405
+	tristate "Flash devices mapped on esd CPCI405"
+	depends on MTD_JEDECPROBE && CPCI405
+	help
+	  This enables access routines for the flash chips on the esd
+	  CPCI405 board.  If you have this board and would like to use the
+	  flash chips on it, say 'Y'.
+
 config MTD_EBONY
 	tristate "Flash devices mapped on IBM 440GP Ebony"
 	depends on MTD_JEDECPROBE && EBONY
drivers/mtd/maps/Makefile +1 -0
index ab71f17..c298dc3 100644
@@ -58,6 +58,7 @@ obj-$(CONFIG_MTD_OCOTEA)	+= ocotea.o
 obj-$(CONFIG_MTD_BEECH)		+= beech-mtd.o
 obj-$(CONFIG_MTD_ARCTIC)	+= arctic-mtd.o
 obj-$(CONFIG_MTD_WALNUT)        += walnut.o
+obj-$(CONFIG_MTD_CPCI405)	+= cpci405-mtd.o
 obj-$(CONFIG_MTD_H720X)		+= h720x-flash.o
 obj-$(CONFIG_MTD_SBC8240)	+= sbc8240.o
 obj-$(CONFIG_MTD_NOR_TOTO)	+= omap-toto-flash.o
drivers/mtd/maps/cpci405-mtd.c new file +142 -0

142 lines not on this page · raw message

#1 lore raw
Quoted 5 lines · Matthias Fuchs

This patch adds MTD support for the NOR flash on CPCI405 boards.

These boards may have different flash chips installed. Some of them are detected by the cfi probing. Others need the jedec_probe support. The patch also adds support for SST39VF3201 chips in jedec_probe.c

Please could you send the SST39VF3201 support separately?

I want to stop adding map drivers -- any reason you can't use physmap? Either with a platform_device, or preferably by extending it to use an of_device too, since this is a PPC platform.

Signature · 1 line
dwmw2
author
#2 lore raw

Hi,

Quoted 1 line · David Woodhouse

Please could you send the SST39VF3201 support separately?

See below.

Quoted 2 lines

I want to stop adding map drivers -- any reason you can't use physmap?

No special reason. Just by habit.

Quoted 2 lines

Either with a platform_device, or preferably by extending it to use an of_device too, since this is a PPC platform.

Ok, I will take a look at that. Probably cloning katana_setup_mtd() from the katana board will be just fine.

Regards
Matthias

Signed-off-by Matthias Fuchs <[email protected]>

---

(quoted diff) +0 -0

b/drivers/mtd/chips/jedec_probe.c
index 517ea33..f99f73e 100644

drivers/mtd/chips/jedec_probe.c +17 -0
@@ -147,6 +147,7 @@ #define SST29LE512  0x003d
 #define SST39LF800     0x2781
 #define SST39LF160     0x2782
 #define SST39VF1601    0x234b
+#define SST39VF3201    0x235b
 #define SST39LF512     0x00D4
 #define SST39LF010     0x00D5
 #define SST39LF020     0x00D6

@@ -1483,6 +1484,22 @@ static const struct amd_flash_info jedec
                }
 
        }, {
+               .mfr_id         = MANUFACTURER_SST,     /* should be CFI */
+               .dev_id         = SST39VF3201,
+               .name           = "SST 39VF3201",
+               .uaddr          = {
+                       [0] = MTD_UADDR_0x5555_0x2AAA,  /* x8 */
+                       [1] = MTD_UADDR_0x5555_0x2AAA   /* x16 */
+               },
+               .DevSize        = SIZE_4MiB,
+               .CmdSet         = P_ID_AMD_STD,
+               .NumEraseRegions= 2,
+               .regions        = {
+                       ERASEINFO(0x1000,512),
+                       ERASEINFO(0x1000,512)
+               }
+
+       }, {
                .mfr_id         = MANUFACTURER_ST,      /* FIXME - CFI

device? */

                .dev_id         = M29W800DT,
                .name           = "ST M29W800DT",