Messages in this thread |  | | | From | Wolfgang Mües <> | | Subject | Re: [PATCH] Fixes and enhancements for the MMC SPI driver | | Date | Thu, 8 Jan 2009 09:22:08 +0100 |
Matt,
Am Dienstag, 6. Januar 2009 schrieb Matt Fleming: > Which cards are you having issues with?
This was a noname 4 GByte SDHC card. If you write a continious stream of data at max. speed, the card generates a BUSY signal every 10 seconds for nearly a whole second.
> Modifying the code to no longer abide by the standard doesn't seem like a > win to me.
I strongly disagree with you.
While each and every SD card should conform to the standard, a driver for a host controller should be as forgiving as possible. If the driver cannot cope with cards sold today, the user has a bad experience.
I code drivers for people and not for standards.
Remember, this is only a timeout. Lengthen the timeout will have no consequences for cards which behave.
best regards i. A. Wolfgang Mües -- Auerswald GmbH & Co. KG Hardware Development Telefon: +49 (0)5306 9219 0 Telefax: +49 (0)5306 9219 94 E-Mail: Wolfgang.Mues@Auerswald.de Web: http://www.auerswald.de -------------------------------------------------------------- Auerswald GmbH & Co. KG, Vor den Grashöfen 1, 38162 Cremlingen Registriert beim AG Braunschweig HRA 13289 p.h.G Auerswald Geschäftsführungsges. mbH Registriert beim AG Braunschweig HRB 7463 Geschäftsführer: Dipl-Ing. Gerhard Auerswald -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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