Re: [PATCH] mmc: Added quirks for Ricoh 1180:e823 lower base clock frequency

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



+
+		dev_notice(&dev->dev, "Controller base frequency changed to 50Mhz)\n");

There's an erroneous ")" in this string; I'll replace it with a "." if
this patch goes in via my tree.  Also, let's make it "MMC controller"
instead of just "Controller".

Oops, I can fix that and resend, or would you rather make the change while (if) applying to your tree?


+	}
+
 }
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);
 DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832);

Have you checked to see how SD I/O performance differs after this change?

(If this is significant, perhaps we want to try lowering the frequency
only after a card starts returning errors, since some cards work fine
at the higher frequency.)


This is something I thought about too, I can try and get some data on the cards (that already works) with the patch applied. Do you have any specific benchmarks in mind that you would like me to run? Or will timing read and write will work?

Thanks a ton!
--
====================
Manoj Iyer
Ubuntu/Canonical
Hardware Enablement
====================
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux