From c557e08d9c9729cdf6b98f7a9c1ebf72fa25e916 Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Tue, 16 Feb 2021 23:02:25 +0800 Subject: [PATCH] hw/sd: sd: Bypass the RCA check for CMD13 in SPI mode MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Unlike SD mode, when SD card is working in SPI mode, the argument of CMD13 is stuff bits. Hence we should bypass the RCA check. See "Physical Layer Specification Version 8.00", chapter 7.3.1.3 Detailed Command Description (SPI mode): "The card shall ignore stuff bits and reserved bits in an argument" and Table 7-3 Commands and Arguments (SPI mode): "CMD13 Argument [31:0] stuff bits" Signed-off-by: Bin Meng Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20210216150225.27996-9-bmeng.cn@gmail.com> Signed-off-by: Philippe Mathieu-Daudé --- hw/sd/sd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 3a515a5365..8b397effbc 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -1163,8 +1163,9 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req) case 13: /* CMD13: SEND_STATUS */ switch (sd->mode) { case sd_data_transfer_mode: - if (sd->rca != rca) + if (!sd->spi && sd->rca != rca) { return sd_r0; + } return sd_r1; -- 2.11.4.GIT