1 files changed, 3 insertions, 1 deletions

diff --git a/firmware/target/mips/ingenic_jz47xx/ata-sd-jz4740.c b/firmware/target/mips/ingenic_jz47xx/ata-sd-jz4740.c
index 4de35367ba..f7754426b4 100644
--- a/firmware/target/mips/ingenic_jz47xx/ata-sd-jz4740.c
+++ b/firmware/target/mips/ingenic_jz47xx/ata-sd-jz4740.c
@@ -612,8 +612,10 @@ static inline unsigned int jz_sd_calc_clkrt(unsigned int rate)
 static inline void cpm_select_msc_clk(unsigned int rate)
 {
     unsigned int div = __cpm_get_pllout2() / rate;
+    if (div == 0)
+            div = 1;
 
-    REG_CPM_MSCCDR = div - 1;
+    REG_CPM_MSCCDR = MSCCDR_MCS | (div - 1);
 }
 
 /* Set the MMC clock frequency */