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authorCooper Jr., Franklin <fcooper@ti.com>2016-05-04 13:34:43 -0500
committerBoris Brezillon <boris.brezillon@free-electrons.com>2016-05-30 10:03:16 +0200
commitaa7abd312c11744f9718338a40ebaaf0685a768a (patch)
tree91adbfe350b8184ba79cc4fb09cddb1e01f920dc /drivers/crypto
parent1a695a905c18548062509178b98bc91e67510864 (diff)
mtd: nand: omap2: Support parsing dma channel information from DT
Switch from dma_request_channel to allow passing dma channel information from DT rather than hardcoding a value. Also provide a handle to the GPMC's dev so it can be used to parse the DMA channel information within the GPMC's DT node. Performance Numbers via mtd_speedtest now that EDMA based prefetch works: AM335x Performance numbers: DMA CPULOAD Write: 54% Read: 35% page write speed -23% (vs non dma) page read speed -35% (vs non dma) NO DMA (prefetch-polled) CPULOAD Write: 98% Read: 98% AM437x Performance numbers: DMA CPU LOAD Write: 56% Read: 36% page write speed -16% (vs non dma) page read speed -22% (vs non dma) NO DMA (prefetch-polled) CPULOAD Write: 93% Read: 93% Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
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