Re: [U-Boot] support for spansion s29gl-p flash?
Hi Aditya. I found some problems with the Numonyx Flash and the U-Boot cfi driver in a PowerPC big endian architecture. See: http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/72598 Cheers, Txema ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] support for spansion s29gl-p flash?
Hi Aditya, I see that you had submitted a potential patch, did it make it into the code-base? I can't understand what exactly your question is. The patch was not formal and It was only tested in a MPC5200 based board. When I sent the patch I did not receive any feedback from the cfi driver custodians. So, I don't know if someone is working in a formal patch. Cheers, Txema. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] support for spansion s29gl-p flash?
Hi Txema, On Friday 23 April 2010 08:26:38 txema lopez wrote: I found some problems with the Numonyx Flash and the U-Boot cfi driver in a PowerPC big endian architecture. See: http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/72598 IIRC, then you problem was more related to using an 8bit wide chip (chip- width) on an 16bit port-width, than being a specific Numonyx issue. Correct? Cheers, Stefan -- DENX Software Engineering GmbH, MD: Wolfgang Denk Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: off...@denx.de ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] support for spansion s29gl-p flash?
On Friday 23 April 2010 09:00:58 Aditya Ojha (adojha) wrote: Thanks Txema. I might be hitting the same problem with the Numonyx flash. I will check enabling debugs. I see that you had submitted a potential patch, did it make it into the code-base? No. The patch was not in a state of being added to the mainline repository, I'm afraid. But back to your question: Do you use 16bit or 8bit chip-width in your design? I suspect that you will have no problems when using 16bit. Cheers, Stefan -- DENX Software Engineering GmbH, MD: Wolfgang Denk Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: off...@denx.de ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] support for spansion s29gl-p flash?
Hi Stefan, IIRC, then you problem was more related to using an 8bit wide chip (chip- width) on an 16bit port-width, Yes, it is our board flash layout. than being a specific Numonyx issue. Correct? But the same board with a Spansion S29GL flash is fully supported by U-Boot, so, I think It is a Numonyx issue. Txema. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] support for spansion s29gl-p flash?
Hi Txema, On Friday 23 April 2010 10:36:24 txema lopez wrote: IIRC, then you problem was more related to using an 8bit wide chip (chip- width) on an 16bit port-width, Yes, it is our board flash layout. OK. So you are using 2 chips interleaved on this 16bit bus (one on lower 8bits and one on higher 8bits), right? than being a specific Numonyx issue. Correct? But the same board with a Spansion S29GL flash is fully supported by U-Boot, so, I think It is a Numonyx issue. I see. Did you check the Linux MTD drivers, if there is a Numonyx special handling here? Thanks. Cheers, Stefan -- DENX Software Engineering GmbH, MD: Wolfgang Denk Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: off...@denx.de ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] support for spansion s29gl-p flash?
Hi Stefan, OK. So you are using 2 chips interleaved on this 16bit bus (one on lower 8bits and one on higher 8bits), right? No, I misunderstood yor last e-mail. Our layout is: The flash chip is 16x/8x capable but is configured in 8x mode ( _BYTE pin to GND). Only the low 8 data bits from the processor are connected to the flash data bits. So, I think our layout is chip_width = 8 and port_width = 8. Is it correct? This is the flinfo report from U-Boot. It's from a Spansion flash board but the Numonyx flash board has the same layout. Bank # 1: CFI conformant FLASH (8 x 8) Size: 16 MB in 128 Sectors AMD Standard command set, Manufacturer ID: 0x01, Device ID: 0x7E2101 Erase timeout: 4096 ms, write timeout: 1 ms Buffer write timeout: 3 ms, buffer size: 64 bytes NOTE: I think the layout you point out could be supported by U-Boot. I see. Did you check the Linux MTD drivers, if there is a Numonyx special handling here? We are working with a 2.4.25 kernel version and the Numonyx is not fully supported (our layout I'm quite sure not). We did some changes to fix it, if you are interested in it I could submit you a patch. Txema ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] support for spansion s29gl-p flash?
Hi Aditya, On Friday 23 April 2010 03:35:59 Aditya Ojha (adojha) wrote: Does the latest u-boot include support for these flash families: - Spansion S29GL-P MirrorBit flash family or - Numonyx Axcell M29EW The common CFI driver (drivers/mtd/cfi_flash.c) should be able to support all CFI compliant FLASH types. The Spansion ones are definitely supported. I suggest you take a look at the Numonyx datasheets to see if they are CFI compliant. If yes, this driver should support them as well. Cheers, Stefan -- DENX Software Engineering GmbH, MD: Wolfgang Denk Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: off...@denx.de ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
