From 42de5fb76d4519c7e6ccf2ea506d4fcaef9d4d5f Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <ivan@espressif.com>
Date: Tue, 16 May 2017 14:19:00 +0800
Subject: [PATCH] sdmmc: send init sequence before CMD0

---
 components/driver/sdmmc_transaction.c | 3 +++
 1 file changed, 3 insertions(+)

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) {