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-rw-r--r--sys/dev/mmc/mmc.c4
-rw-r--r--sys/dev/mmc/mmcreg.h1
2 files changed, 3 insertions, 2 deletions
diff --git a/sys/dev/mmc/mmc.c b/sys/dev/mmc/mmc.c
index d89af3b..c3f96c9 100644
--- a/sys/dev/mmc/mmc.c
+++ b/sys/dev/mmc/mmc.c
@@ -239,8 +239,8 @@ mmc_rescan_cards(struct mmc_softc *sc)
static uint32_t
mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr)
{
- // XXX
- return ocr;
+
+ return ocr & MMC_OCR_VOLTAGE;
}
static int
diff --git a/sys/dev/mmc/mmcreg.h b/sys/dev/mmc/mmcreg.h
index 1b868cb..fddaf97 100644
--- a/sys/dev/mmc/mmcreg.h
+++ b/sys/dev/mmc/mmcreg.h
@@ -292,6 +292,7 @@ struct mmc_request {
*
* The MMC_OCR_CCS appears to be valid for only SD cards.
*/
+#define MMC_OCR_VOLTAGE 0x3fffffffU /* Vdd Voltage mask */
#define MMC_OCR_LOW_VOLTAGE (1u << 7) /* Low Voltage Range -- tbd */
#define MMC_OCR_200_210 (1U << 8) /* Vdd voltage 2.00 ~ 2.10 */
#define MMC_OCR_210_220 (1U << 9) /* Vdd voltage 2.10 ~ 2.20 */
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