Re: [PATCH 0/3] mtd: Make sure UBIFS does not do multi-pass page programming on flashes that don't support it

2020-11-05 Thread Pratyush Yadav
On 05/11/20 05:51PM, Vignesh Raghavendra wrote: > > > On 11/3/20 6:15 PM, Pratyush Yadav wrote: > > On 03/11/20 05:05PM, Vignesh Raghavendra wrote: > >> > >> > >> On 11/1/20 3:14 AM, Richard Weinberger wrote: > >>> On Tue, Oct 27, 2020 at 12:24 PM Pratyush Yadav wrote: > > [0] > > https

Re: [PATCH 0/3] mtd: Make sure UBIFS does not do multi-pass page programming on flashes that don't support it

2020-11-05 Thread Vignesh Raghavendra
On 11/3/20 6:15 PM, Pratyush Yadav wrote: > On 03/11/20 05:05PM, Vignesh Raghavendra wrote: >> >> >> On 11/1/20 3:14 AM, Richard Weinberger wrote: >>> On Tue, Oct 27, 2020 at 12:24 PM Pratyush Yadav wrote: > [0] > https://lore.kernel.org/linux-mtd/20201005153138.6437-1-p.ya...@ti.com/

Re: [PATCH 0/3] mtd: Make sure UBIFS does not do multi-pass page programming on flashes that don't support it

2020-11-03 Thread Pratyush Yadav
On 03/11/20 05:05PM, Vignesh Raghavendra wrote: > > > On 11/1/20 3:14 AM, Richard Weinberger wrote: > > On Tue, Oct 27, 2020 at 12:24 PM Pratyush Yadav wrote: > >>> [0] > >>> https://lore.kernel.org/linux-mtd/20201005153138.6437-1-p.ya...@ti.com/ > >> > >> Ping. Any comments on the series? > >

Re: [PATCH 0/3] mtd: Make sure UBIFS does not do multi-pass page programming on flashes that don't support it

2020-11-03 Thread Vignesh Raghavendra
On 11/1/20 3:14 AM, Richard Weinberger wrote: > On Tue, Oct 27, 2020 at 12:24 PM Pratyush Yadav wrote: >>> [0] https://lore.kernel.org/linux-mtd/20201005153138.6437-1-p.ya...@ti.com/ >> >> Ping. Any comments on the series? > > From the UBIFS point of view I'd like to avoid as many device speci

Re: [PATCH 0/3] mtd: Make sure UBIFS does not do multi-pass page programming on flashes that don't support it

2020-10-31 Thread Richard Weinberger
On Tue, Oct 27, 2020 at 12:24 PM Pratyush Yadav wrote: > > [0] https://lore.kernel.org/linux-mtd/20201005153138.6437-1-p.ya...@ti.com/ > > Ping. Any comments on the series? >From the UBIFS point of view I'd like to avoid as many device specific settings as possible. We check already for NOR flash

Re: [PATCH 0/3] mtd: Make sure UBIFS does not do multi-pass page programming on flashes that don't support it

2020-10-27 Thread Pratyush Yadav
On 12/10/20 11:34PM, Pratyush Yadav wrote: > Hi, > > The Cypress Semper S28 flash family uses 2-bit ECC by default. Under > this ECC scheme, multi-pass page programs result in a program error. > This means that unlike many other SPI NOR flashes, bit-walking cannot be > done. In other words, once a

[PATCH 0/3] mtd: Make sure UBIFS does not do multi-pass page programming on flashes that don't support it

2020-10-12 Thread Pratyush Yadav
Hi, The Cypress Semper S28 flash family uses 2-bit ECC by default. Under this ECC scheme, multi-pass page programs result in a program error. This means that unlike many other SPI NOR flashes, bit-walking cannot be done. In other words, once a page is programmed, its bits cannot then be flipped to