mmc: sdhci-s3c: Fix base clock source management
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Cover letter [PATCH 0/6] mmc: sdhci-s3c: Fix base clock source management
Hi Jaehoon, Heiko,
Quoted 41 lines · Jaehoon Chung
Hi, All.
Quoted 9 lines · Heiko St?bner
Am Samstag, 11. Januar 2014, 22:39:00 schrieb Tomasz Figa:
Quoted 8 lines
Tested on S3C6410-based Mini6410 board, with following performance figures:
* Before this series (133 MHz HCLK always selected, leading to at most 33 MHz card clock):
root at tiny6410:~# hdparm -t
/dev/mmcblk0Quoted 7 lines
Quoted 2 lines
/dev/mmcblk0:
Timing buffered disk reads: 42 MB in 3.10 seconds = 13.54 MB/sec# hdparm -t /dev/mmcblk0
/dev/mmcblk0:
Timing buffered disk reads: 44 MB in 3.12 seconds = 14.11 MB/sec
/dev/mmcblk0:
Timing buffered disk reads: 38 MB in 3.14 seconds = 12.12 MB/secQuoted 7 lines
Quoted 7 lines
* After this series (48 MHz EPLL clock selected, leading to 48 MHz card clock):
root at tiny6410:~# hdparm -t
/dev/mmcblk0Quoted 7 lines
Quoted 2 lines
/dev/mmcblk0:
Timing buffered disk reads: 56 MB in 3.04 seconds = 18.41 MB/sec# hdparm -t /dev/mmcblk0
/dev/mmcblk0:
Timing buffered disk reads: 48 MB in 3.01 seconds = 15.94 MB/sec
/dev/mmcblk0:
Timing buffered disk reads: 56 MB in 3.05 seconds = 18.35 MB/secQuoted 2 lines
Quoted 8 lines
Quoted 3 lines
So on a s3c2416:
Tested-by Heiko Stuebner <[email protected]>Acked-by Heiko Stuebner <[email protected]>Tested with exynos4 board.
Tested-by Jaehoon Chung <[email protected]>Acked-by; Jaehoon Chung <[email protected]>
Thank you both for testing and acking.
Best regards,
Tomasz