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| author | Sergei Antonov <saproj@gmail.com> | 2022-09-07 23:57:53 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2022-09-14 13:11:08 +0300 |
| commit | 35ca91d1338ae158f6dcc0de5d1e86197924ffda (patch) | |
| tree | e88adf949081b4458fdd5dc83bf549d5478e939e /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | faded9b5572a27c1eaec19f3a2759b4547507731 (diff) | |
| download | linux-35ca91d1338ae158f6dcc0de5d1e86197924ffda.tar.xz | |
mmc: moxart: fix 4-bit bus width and remove 8-bit bus width
According to the datasheet [1] at page 377, 4-bit bus width is turned on by
bit 2 of the Bus Width Register. Thus the current bitmask is wrong: define
BUS_WIDTH_4 BIT(1)
BIT(1) does not work but BIT(2) works. This has been verified on real MOXA
hardware with FTSDC010 controller revision 1_6_0.
The corrected value of BUS_WIDTH_4 mask collides with: define BUS_WIDTH_8
BIT(2). Additionally, 8-bit bus width mode isn't supported according to the
datasheet, so let's remove the corresponding code.
[1]
https://bitbucket.org/Kasreyn/mkrom-uc7112lx/src/master/documents/FIC8120_DS_v1.2.pdf
Fixes: 1b66e94e6b99 ("mmc: moxart: Add MOXA ART SD/MMC driver")
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Cc: Jonas Jensen <jonas.jensen@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220907205753.1577434-1-saproj@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions