Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e491d230 authored by Manuel Lauss's avatar Manuel Lauss Committed by Pierre Ossman
Browse files

au1xmmc: raise segment size limit. 



Raise the DMA block size limit from 2048 bytes to the maximum supported
by the DMA controllers on the chip (64KB on Au1100, 4MB on Au1200).

This gives a very small performance boost and apparently fixes an oops
when MMC-DMA and network traffic are active at the same time.

Signed-off-by: default avatarManuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent b41e9c7b

drivers/mmc/host/au1xmmc.c

+7 −1
Original line number Diff line number Diff line
@@ -61,7 +61,13 @@ 


/* Hardware definitions */

#define AU1XMMC_DESCRIPTOR_COUNT 1

#define AU1XMMC_DESCRIPTOR_SIZE  2048



/* max DMA seg size: 64KB on Au1100, 4MB on Au1200 */

#ifdef CONFIG_SOC_AU1100

#define AU1XMMC_DESCRIPTOR_SIZE 0x0000ffff

#else	/* Au1200 */

#define AU1XMMC_DESCRIPTOR_SIZE 0x003fffff

#endif



#define AU1XMMC_OCR (MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30 | \

		     MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33 | \