From fd88bd1d2c69ceded89da48f98f0ae117a56f195 Mon Sep 17 00:00:00 2001
From: hexkyz <mike.hexkyz@gmail.com>
Date: Tue, 24 Jul 2018 19:06:41 +0100
Subject: [PATCH] fusee: Disable the SDCLK when switching to low voltage.

---
 fusee/fusee-secondary/src/sdmmc/sdmmc_core.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fusee/fusee-secondary/src/sdmmc/sdmmc_core.c b/fusee/fusee-secondary/src/sdmmc/sdmmc_core.c
index b99db835d..85cab87ba 100644
--- a/fusee/fusee-secondary/src/sdmmc/sdmmc_core.c
+++ b/fusee/fusee-secondary/src/sdmmc/sdmmc_core.c
@@ -1712,6 +1712,9 @@ int sdmmc_switch_voltage(sdmmc_t *sdmmc)
 {
     volatile tegra_pmc_t *pmc = pmc_get_regs();
     
+    /* Disable the SD clock. */
+    sdmmc_disable_sd_clock(sdmmc);
+    
     /* Reconfigure the internal clock. */
     if (!sdmmc_select_speed(sdmmc, SDMMC_SPEED_SDR12))
     {
@@ -1978,4 +1981,4 @@ int sdmmc_abort(sdmmc_t *sdmmc, uint32_t opcode)
         sdmmc_disable_sd_clock(sdmmc);
 
     return result;
-}
\ No newline at end of file
+}