]> git.baikalelectronics.ru Git - kernel.git/commit
mmc: sdhci-st: Update the quirks for this controller.
authorPeter Griffin <peter.griffin@linaro.org>
Fri, 10 Apr 2015 09:40:28 +0000 (10:40 +0100)
committerUlf Hansson <ulf.hansson@linaro.org>
Fri, 10 Apr 2015 10:55:40 +0000 (12:55 +0200)
commit2e814cf0438ffd024b65b71370620e431ee574f0
tree6e2431f4ee82c2dd6b35f4937a0acb6e63b9364c
parentcc0381d5d8f269d4b9cdb1bf822396c8c40ee86a
mmc: sdhci-st: Update the quirks for this controller.

Some additional quirks need to be enabled now we support UHS
modes. This avoids some spurious warnings like

"Got data interrupt 0x00000002 even though no data operation was in progress"

Testing on stih410-b2120 board achieves the following speeds
with HS200 eMMC card.

max-frequency = 200Mhz
/dev/mmcblk0p1:
 Timing buffered disk reads: 270 MB in  3.02 seconds =  89.54 MB/sec

max-frequency = 100Mhz
root@debian-armhf:~# hdparm -t /dev/mmcblk0p1
/dev/mmcblk0p1:
 Timing buffered disk reads: 210 MB in  3.00 seconds =  70.00 MB/sec

max-frequency = 50Mhz
root@debian-armhf:~# hdparm -t /dev/mmcblk0p1
/dev/mmcblk0p1:
 Timing buffered disk reads: 118 MB in  3.00 seconds =  39.28 MB/sec

This is better than the 3.10 kernel which achieves 77.59 MB/sec
at 200Mhz clock (same board/soc/eMMC).

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
drivers/mmc/host/sdhci-st.c