review.openocd Code Review - openocd.git/commit

author	Bohdan Tymkiv <bhdt@cypress.com>
	Wed, 21 Mar 2018 14:13:28 +0000 (16:13 +0200)
committer	Tomas Vanek <vanekt@fbl.cz>
	Mon, 23 Apr 2018 19:42:06 +0000 (20:42 +0100)
commit	4440bf1fcddce3501781496e2d6a9d0f12cba08d
tree	039a7761db71f826875953dc7ce5e09d5ddb1385	tree \| snapshot
parent	b941e2e727387c6c8880990b829a48b289dfc90b	commit \| diff

psoc6: Run flash algorithm asynchronously to improve performance

Existing psoc6 driver starts flash algorithm for each Flash row. This is
suboptimal from performance point of view, starting/stopping flash
algorithm for each row adds significant overhead. This change starts
flash algorithm and leaves it running asynchronously while driver
performs flash operations.

Performance gain is 170...250% depending on probe:

flash write_image img_256k.bin    | w/o this change | with this change |
----------------------------------|-----------------|------------------|
KitProg2/CMSIS-DAP, SWD @ 1 MHz   |     4 KiB/s     |     10 KiB/s     |
J-Link Ultra, SWD @ 1 MHz         |    17 KiB/s     |     31 KiB/s     |
J-Link Ultra, SWD @ 4 MHz         |    33 KiB/s     |     57 KiB/s     |

Change-Id: I5bd582584b35af67600c4d197829eb7aeeec7e3f
Signed-off-by: Bohdan Tymkiv <bhdt@cypress.com>
Reviewed-on: http://openocd.zylin.com/4472
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

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src/flash/nor/psoc6.c		diff \| blob \| history
tcl/target/psoc6.cfg		diff \| blob \| history