From: Ivan Grokhotkov <ivan@espressif.com>
Date: Tue, 16 May 2017 06:19:00 +0000 (+0800)
Subject: sdmmc: send init sequence before CMD0
X-Git-Tag: v3.1-beta1~274^2~9
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=42de5fb76d4519c7e6ccf2ea506d4fcaef9d4d5f;p=esp-idf

sdmmc: send init sequence before CMD0
---

diff --git a/components/driver/sdmmc_transaction.c b/components/driver/sdmmc_transaction.c
index 16a27d5a1f..31e76ac6d9 100644
--- a/components/driver/sdmmc_transaction.c
+++ b/components/driver/sdmmc_transaction.c
@@ -250,6 +250,9 @@ static sdmmc_hw_cmd_t make_hw_cmd(sdmmc_command_t* cmd)
         res.send_auto_stop = 1;
         res.data_expected = 1;
     }
+    if (cmd->opcode == MMC_GO_IDLE_STATE) {
+        res.send_init = 1;
+    }
     if (cmd->flags & SCF_RSP_PRESENT) {
         res.response_expect = 1;
         if (cmd->flags & SCF_RSP_136) {