When booting U-boot/Linux on Aspeed boards via eMMC,
some commands don't behave as expected from the spec.

Add the 'x-aspeed-emmc-kludge' property to allow non
standard uses until we figure out the reasons.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/sd/sd.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index bd77853419..dc692fe1fa 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -127,6 +127,7 @@ struct SDState {
 
     uint8_t spec_version;
     BlockBackend *blk;
+    bool aspeed_emmc_kludge;
 
     const SDProto *proto;
 
@@ -2567,6 +2568,8 @@ static Property sd_properties[] = {
     DEFINE_PROP_UINT8("spec_version", SDState,
                       spec_version, SD_PHY_SPECv3_01_VERS),
     DEFINE_PROP_DRIVE("drive", SDState, blk),
+    DEFINE_PROP_BOOL("x-aspeed-emmc-kludge", SDState,
+                     aspeed_emmc_kludge, false),
     /* We do not model the chip select pin, so allow the board to select
      * whether card should be in SSI or MMC/SD mode.  It is also up to the
      * board to ensure that ssi transfers only occur when the chip select
-- 
2.41.0