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| author | Adrian Hunter <adrian.hunter@intel.com> | 2024-04-10 22:16:35 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-16 14:51:00 +0300 |
| commit | dcf20c6f0700edb21696522b3b4b3aa2dcd73626 (patch) | |
| tree | 5567f916abaaabb2438ba379937da090bef5dc98 /mm/Makefile | |
| parent | 984969e0150c93bd2794e8b2d11410ea14da70e8 (diff) | |
| download | linux-dcf20c6f0700edb21696522b3b4b3aa2dcd73626.tar.xz | |
mmc: sdhci: Add support for "Tuning Error" interrupts
commit b3855668d98cf9c6aec2db999dd27d872f8ba878 upstream.
Most Bay Trail devices do not enable UHS modes for the external sdcard slot
the Lenovo Yoga Tablet 2 830 / 1050 and Lenovo Yoga Tablet 2 Pro 1380 (8",
10" and 13") models however do enable this.
Using a UHS cards in these tablets results in errors like this one:
[ 225.272001] mmc2: Unexpected interrupt 0x04000000.
[ 225.272024] mmc2: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 225.272034] mmc2: sdhci: Sys addr: 0x0712c400 | Version: 0x0000b502
[ 225.272044] mmc2: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000007
[ 225.272054] mmc2: sdhci: Argument: 0x00000000 | Trn mode: 0x00000023
[ 225.272064] mmc2: sdhci: Present: 0x01e20002 | Host ctl: 0x00000016
[ 225.272073] mmc2: sdhci: Power: 0x0000000f | Blk gap: 0x00000000
[ 225.272082] mmc2: sdhci: Wake-up: 0x00000000 | Clock: 0x00000107
[ 225.272092] mmc2: sdhci: Timeout: 0x0000000e | Int stat: 0x00000001
[ 225.272101] mmc2: sdhci: Int enab: 0x03ff000b | Sig enab: 0x03ff000b
[ 225.272110] mmc2: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000001
[ 225.272119] mmc2: sdhci: Caps: 0x076864b2 | Caps_1: 0x00000004
[ 225.272129] mmc2: sdhci: Cmd: 0x00000c1b | Max curr: 0x00000000
[ 225.272138] mmc2: sdhci: Resp[0]: 0x00000c00 | Resp[1]: 0x00000000
[ 225.272147] mmc2: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000900
[ 225.272155] mmc2: sdhci: Host ctl2: 0x0000000c
[ 225.272164] mmc2: sdhci: ADMA Err: 0x00000003 | ADMA Ptr: 0x0712c200
[ 225.272172] mmc2: sdhci: ============================================
which results in IO errors leading to issues accessing the sdcard.
0x04000000 is a so-called "Tuning Error" which sofar the SDHCI driver
does not support / enable. Modify the IRQ handler to process these.
This fixes UHS microsd cards not working with these tablets.
Link: https://lore.kernel.org/r/199bb4aa-c6b5-453e-be37-58bbf468800c@intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20240410191639.526324-3-hdegoede@redhat.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/Makefile')
0 files changed, 0 insertions, 0 deletions