ShuriZma
/
xemu
mirror of https://github.com/xemu-project/xemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
This commit is contained in:
Philippe Mathieu-Daudé 2018-06-08 13:15:34 +01:00 committed by Peter Maydell
parent 2f0939c234
commit d1b322182b
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
hw/sd/sd.c
View File

@ -1018,7 +1018,9 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
break; break;
case 8: /* CMD8: SEND_IF_COND */ 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) { if (sd->state != sd_idle_state) {
break; break;
} }