On 05/08/2013 11:55 PM, Christian Daudt wrote: > Add SDHCI driver for the Broadcom 281xx SoCs. Also > add bindings for it into bcm281xx dts files. > Still missing: > - power managemement > diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm-kona.c > + /* > + * Back-to-Back register write needs a delay of 1ms at bootup (min 10uS) > + * Back-to-Back writes to same register needs delay when SD bus clock > + * is very low w.r.t AHB clock, mainly during boot-time and during card > + * insert-removal. > + */ > + udelay(1000); > + sdhci_writel(host, val, KONA_SDHOST_CORECTRL); This sounds very similar to the workaround in drivers/mmc/host/sdhci-bcm2835.c. Is this the same IP block supported by that driver? Perhaps not, since bcm2835 apparently needs other WARs such as always using 32-bit IO and hence needing custom read/write w/b functions to do read-modify-write which isn't here? -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
