From d1b322182bfebd8fe9442c52f50e7ac3acf07edd Mon Sep 17 00:00:00 2001 From: =?utf8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Fri, 8 Jun 2018 13:15:34 +0100 Subject: [PATCH] sdcard: Disable SEND_IF_COND (CMD8) for Spec v1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Message-id: 20180607180641.874-5-f4bug@amsat.org Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- hw/sd/sd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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; } -- 2.30.2