Messages in this thread | | | Date | Sat, 16 May 2015 18:23:23 -0300 | From | Ezequiel Garcia <> | Subject | Re: [PATCH v5 05/12] mtd: pxa3xx_nand: rework flash detection and timing setup |
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On 05/12/2015 11:39 AM, Antoine Tenart wrote: > Ezequiel, > > On Mon, May 11, 2015 at 07:10:56PM -0300, Ezequiel Garcia wrote: >> >> On 05/11/2015 11:58 AM, Antoine Tenart wrote: >> [..] >>> - >>> - /* calculate flash information */ >>> - host->read_id_bytes = (f->page_size == 2048) ? 4 : 2; >>> - >> >> [..] >>> @@ -1732,6 +1669,7 @@ static int alloc_nand_resource(struct platform_device *pdev) >>> host->mtd = mtd; >>> host->cs = cs; >>> host->info_data = info; >>> + host->read_id_bytes = 4; >> >> Are you sure this is correct? The value is set according to the page >> size before this patch. > > Before reading the ID, the pxa3xx driver uses a default configuration, > builtin_flash_types[0], which defines a page size of 2048 leading to set > host->read_id_bytes to 4. > > I'm using this default value here. > > There might be an issue, as host->read_id_bytes isn't updated after > reading the ID (and getting the actual page size). I don't know if this > can be a problem. I can modify pxa3xx_nand_config_flash() to update > host->read_id_bytes if needed. What do you think? >
Well, once the device is detected, READ_ID shouldn't be used, so I'm not sure what's the point of that.
-- Ezequiel Garcia, VanguardiaSur www.vanguardiasur.com.ar
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