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| author | Shawn Lin <shawn.lin@rock-chips.com> | 2016-09-22 12:02:19 +0800 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2016-10-16 02:40:20 +0200 |
| commit | 0362fcc9d6834034bc0cdb1d9b02a1b9baf96a2a (patch) | |
| tree | f3e8f0737e3898dd9bdc02a9c2a94d910be422b8 /arch/ia64 | |
| parent | 1001354ca34179f3db924eb66672442a173147dc (diff) | |
| download | op-kernel-dev-0362fcc9d6834034bc0cdb1d9b02a1b9baf96a2a.zip op-kernel-dev-0362fcc9d6834034bc0cdb1d9b02a1b9baf96a2a.tar.gz | |
arm64: dts: rockchip: remove always-on and boot-on from vcc_sd
Please don't add these for vcc_sd, and mmc-core/driver will control
it. Otherwise, it will waste energy even without sdmmc in slot.
Moreover, it will causes a bug:
If we insert/remove sd card, we could see
[9.337271] mmc0: new ultra high speed SDR25 SDHC card at address 0007
[9.345144] mmcblk0: mmc0:0007 SD32G 29.3 GiB
This is okay for normal sd insert/remove test, but when I debug some
issues for sdmmc, I did unbind/bind test. And there is a interesting
phenomenon when we bind the driver again:
[58.314069] mmc0: new high speed SDHC card at address 0007
[58.320282] mmcblk0: mmc0:0007 SD32G 29.3 GiB
So the sd card could just support high speed without power cycle
since the vcc_sd is always on, which makes the sd card fail to
reinit its internal ocr mask.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'arch/ia64')
0 files changed, 0 insertions, 0 deletions
