diff options
| author | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2018-06-08 13:15:34 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-06-08 13:15:34 +0100 |
| commit | d1b322182bfebd8fe9442c52f50e7ac3acf07edd (patch) | |
| tree | cde04ab4eb9b84a191938a45e1e0358762d6bc85 /hw | |
| parent | 2f0939c2342f0dbe5d3abb264cf5e6cd6636375a (diff) | |
sdcard: Disable SEND_IF_COND (CMD8) for Spec v1
CMD8 is "Reserved" in Spec v1.10.
Spec v2.00 introduces the SEND_IF_COND command:
6.4.1 Power Up
CMD8 is newly added in the Physical Layer Specification Version
2.00 to support multiple voltage ranges and used to check whether
the card supports supplied voltage. The version 2.00 or later host
shall issue CMD8 and verify voltage before card initialization.
The host that does not support CMD8 shall supply high voltage range.
Message-Id: 201204252110.20873.paul@codesourcery.com
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180607180641.874-5-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/sd/sd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 1ae085de69..3ec0f71f24 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -1018,7 +1018,9 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req) break; case 8: /* CMD8: SEND_IF_COND */ - /* Physical Layer Specification Version 2.00 command */ + if (sd->spec_version < SD_PHY_SPECv2_00_VERS) { + break; + } if (sd->state != sd_idle_state) { break; } |