mmc: sdio: Fix SDIO 3.0 UHS-I initialization sequence
According to UHS-I initialization sequence for SDIO 3.0 cards,
the host must set bit[24] (S18R) of OCR register during OCR
handshake to know whether the SDIO card is capable of doing
1.8V I/O.
CRs-Fixed: 424685
Change-Id: I8d9171ec4d24046287c9bf4c268f688ae8797646
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index f435221..c798cf9 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -468,6 +468,14 @@
return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
}
+static inline int mmc_host_uhs(struct mmc_host *host)
+{
+ return host->caps &
+ (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
+ MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
+ MMC_CAP_UHS_DDR50);
+}
+
#ifdef CONFIG_MMC_CLKGATE
void mmc_host_clk_hold(struct mmc_host *host);
void mmc_host_clk_release(struct mmc_host *host);