zynq: sdhci: Enable MMC host High Capacity support

This patch enables MMC high capacity support to host, to inform
the card that the host is capable to handle the high capacity cards.

This is needs for the cards(mmc/emmc) which has > 2GB capacity.

Bug log(for > 2GB cards without enabling MMC_MODE_HC):
zynq-uboot> mmcinfo
[snip]
[snip]
CMD_SEND:1
                ARG                      0x00300000
                MMC_RSP_R3,4             0x00FF8080
CMD_SEND:1
                ARG                      0x00300000
                MMC_RSP_R3,4             0x00FF8080
CMD_SEND:1
                ARG                      0x00300000
                MMC_RSP_R3,4             0x00FF8080
CMD_SEND:1
                ARG                      0x00300000
                MMC_RSP_R3,4             0x00FF8080
Card did not respond to voltage select!
Device: zynq_sdhci
Manufacturer ID: 0
OEM: 0
Name: Tran Speed: 0
Rd Block Len: 0
MMC version 0.0
High Capacity: No
Capacity: 0 Bytes
Bus Width: 1-bit

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index 27e9d5ef7c1fed16dae6b9cc96896d90d815fc29..340c09865cdd7e6d0b959ac46697b5f01da916cc 100644 (file)
--- a/drivers/mmc/zynq_sdhci.c
+++ b/drivers/mmc/zynq_sdhci.c
@@ -33,6 +33,8 @@ int zynq_sdhci_init(u32 regbase, u32 max_clk, u32 min_clk)
        host->quirks = SDHCI_QUIRK_NO_CD | SDHCI_QUIRK_WAIT_SEND_CMD;
        host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 
+       host->host_caps = MMC_MODE_HC;
+
        add_sdhci(host, max_clk, min_clk);
        return 0;
 }