diff options
| author | Erick Shepherd <erick.shepherd@ni.com> | 2025-02-11 15:46:45 -0600 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2025-03-11 18:15:23 +0100 |
| commit | fb3bbc46c94f261b6156ee863c1b06c84cf157dc (patch) | |
| tree | c9931c6c36a7ceb659801d476505983759e239b1 /tools/perf/scripts/python | |
| parent | 4e35c611eed74ad6a127853f7c2f7dec08458bbb (diff) | |
mmc: sdhci: Disable SD card clock before changing parameters
Per the SD Host Controller Simplified Specification v4.20 ยง3.2.3, change
the SD card clock parameters only after first disabling the external card
clock. Doing this fixes a spurious clock pulse on Baytrail and Apollo Lake
SD controllers which otherwise breaks voltage switching with a specific
Swissbit SD card.
Signed-off-by: Kyle Roeschley <kyle.roeschley@ni.com>
Signed-off-by: Brad Mouring <brad.mouring@ni.com>
Signed-off-by: Erick Shepherd <erick.shepherd@ni.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20250211214645.469279-1-erick.shepherd@ni.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions