diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 1ba21204ebe0..8755d618e116 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -216,9 +216,9 @@ void __init plat_mem_setup(void)
 					   AR71XX_RESET_SIZE);
 	ath79_pll_base = ioremap_nocache(AR71XX_PLL_BASE,
 					 AR71XX_PLL_SIZE);
+	ath79_detect_sys_type();
 	ath79_ddr_ctrl_init();
 
-	ath79_detect_sys_type();
 	if (mips_machtype != ATH79_MACH_GENERIC_OF)
 		detect_memory_region(0, ATH79_MEM_SIZE_MIN, ATH79_MEM_SIZE_MAX);
 
@@ -281,3 +281,8 @@ MIPS_MACHINE(ATH79_MACH_GENERIC,
 	     "Generic",
 	     "Generic AR71XX/AR724X/AR913X based board",
 	     ath79_generic_init);
+
+MIPS_MACHINE(ATH79_MACH_GENERIC_OF,
+	     "DTB",
+	     "Generic AR71XX/AR724X/AR913X based board (DT)",
+	     NULL);
diff --git a/arch/mips/boot/dts/qca/ar9132.dtsi b/arch/mips/boot/dts/qca/ar9132.dtsi
index fb7734eadbf0..13d0439496a9 100644
--- a/arch/mips/boot/dts/qca/ar9132.dtsi
+++ b/arch/mips/boot/dts/qca/ar9132.dtsi
@@ -107,7 +107,7 @@
 			miscintc: interrupt-controller@18060010 {
 				compatible = "qca,ar9132-misc-intc",
 					   "qca,ar7100-misc-intc";
-				reg = <0x18060010 0x4>;
+				reg = <0x18060010 0x8>;
 
 				interrupt-parent = <&cpuintc>;
 				interrupts = <6>;
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index ad1fccdb8d13..2046c0230224 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -200,8 +200,9 @@ static inline int pfn_valid(unsigned long pfn)
 {
 	/* avoid <linux/mm.h> include hell */
 	extern unsigned long max_mapnr;
+	unsigned long pfn_offset = ARCH_PFN_OFFSET;
 
-	return pfn >= ARCH_PFN_OFFSET && pfn < max_mapnr;
+	return pfn >= pfn_offset && pfn < max_mapnr;
 }
 
 #elif defined(CONFIG_SPARSEMEM)