--- /dev/null
+--- a/arch/mips/bcm47xx/sprom.c
++++ b/arch/mips/bcm47xx/sprom.c
+@@ -652,12 +652,10 @@ static void bcm47xx_fill_sprom_ethernet(
+ static void bcm47xx_fill_board_data(struct ssb_sprom *sprom, const char *prefix,
+ bool fallback)
+ {
+- nvram_read_u16(prefix, NULL, "boardrev", &sprom->board_rev, 0,
+- fallback);
++ nvram_read_u16(prefix, NULL, "boardrev", &sprom->board_rev, 0, true);
+ nvram_read_u16(prefix, NULL, "boardnum", &sprom->board_num, 0,
+ fallback);
+- nvram_read_u16(prefix, NULL, "boardtype", &sprom->board_type, 0,
+- fallback);
++ nvram_read_u16(prefix, NULL, "boardtype", &sprom->board_type, 0, true);
+ nvram_read_u32_2(prefix, "boardflags", &sprom->boardflags_lo,
+ &sprom->boardflags_hi, fallback);
+ nvram_read_u32_2(prefix, "boardflags2", &sprom->boardflags2_lo,