drivers: rknand: optimize reading speed

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There is a big delay between DMA transmission completed and waiting for
interruption, which results in the degradation of read performance.

It is modified to use usleep_range delay without interruption, and
the read performance is improved by 40%.

Change-Id: Ia9b92382d7a1a4fbd157dace2067c7dd15cb69ca
Signed-off-by: Yifeng Zhao <zyf@rock-chips.com>

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This commit is contained in:

Yifeng Zhao 2020-02-19 17:03:56 +08:00 committed by Tao Huang

parent 1c9abe11af

commit 027b359f38

7 changed files with 61688 additions and 62385 deletions

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19618

drivers/rk_nand/rk_ftl_arm_v7.S

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drivers/rk_nand/rk_ftl_arm_v7_thumb.S

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drivers/rk_nand/rk_ftl_arm_v8.S

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drivers/rk_nand/rk_ftlv5_arm32.S

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drivers/rk_nand/rk_ftlv5_arm64.S

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drivers/rk_nand/rk_zftl_arm32.S

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drivers/rk_nand/rk_zftl_arm64.S

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