diff --git a/board/m12.h b/board/m12.h
index b3b31a064..fdd6b2d99 100644
--- a/board/m12.h
+++ b/board/m12.h
@@ -49,6 +49,7 @@
 #define FTUNE 3
 
 #define vreg_init buck_init
+#define board_init m12_init
 #include <std_conf.h>
 
 #endif
diff --git a/src/default_lowlevel.c b/src/default_lowlevel.c
index 6150885a0..44496d279 100644
--- a/src/default_lowlevel.c
+++ b/src/default_lowlevel.c
@@ -58,3 +58,14 @@ void buck_init(void) {
 	while(CRM->STATUSbits.VREG_1P8V_RDY == 0) { continue; }
 }
 
+void m12_init(void) {
+	/* configure pullups for low power */
+	GPIO->FUNC_SEL.GPIO_63 = 3;
+	GPIO->PAD_PU_SEL.GPIO_63 = 0;
+	GPIO->FUNC_SEL.SS = 3;
+	GPIO->PAD_PU_SEL.SS = 1;
+	GPIO->FUNC_SEL.VREF2H = 3;
+	GPIO->PAD_PU_SEL.VREF2H = 1;
+	GPIO->FUNC_SEL.U1RTS = 3;
+	GPIO->PAD_PU_SEL.U1RTS = 1;
+}
diff --git a/src/default_lowlevel.h b/src/default_lowlevel.h
index 550fe8b59..fcdf12543 100644
--- a/src/default_lowlevel.h
+++ b/src/default_lowlevel.h
@@ -42,6 +42,7 @@
 
 void default_vreg_init(void);
 void buck_init(void);
+void m12_init(void);
 void uart1_init(uint16_t inc, uint16_t mod, uint8_t samp);
 void uart2_init(uint16_t inc, uint16_t mod, uint8_t samp);