e613cc477c
host->card_busy() was introduced for SD voltage switching which checks all 4 data lines. Increasingly, host->card_busy is being used to poll the the busy signal which is only data line 0 (DAT[0]). The current logic in sdhci_card_busy() does not work in that case because it returns false if any of the data lines is high. It also ignores possibilities: - data lines 1-3 are not connected and could show at any level - data lines 1-2 can be used by SDIO for other purposes According to the SD specification, it is OK to check any of the data lines for voltage switching, so change to use DAT[0] only. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
||
|---|---|---|
| .. | ||
| card | ||
| core | ||
| host | ||
| Kconfig | ||
| Makefile | ||