diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c
index 09fc227..24740b8 100644
--- a/arch/arm/imx-common/cpu.c
+++ b/arch/arm/imx-common/cpu.c
@@ -187,3 +187,34 @@
 	ipuv3_fb_shutdown();
 }
 #endif
+
+void set_chipselect_size(int const cs_size)
+{
+	unsigned int reg;
+	struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
+	reg = readl(&iomuxc_regs->gpr[1]);
+
+	switch (cs_size) {
+	case CS0_128:
+		reg &= ~0x7;	/* CS0=128MB, CS1=0, CS2=0, CS3=0 */
+		reg |= 0x5;
+		break;
+	case CS0_64M_CS1_64M:
+		reg &= ~0x3F;	/* CS0=64MB, CS1=64MB, CS2=0, CS3=0 */
+		reg |= 0x1B;
+		break;
+	case CS0_64M_CS1_32M_CS2_32M:
+		reg &= ~0x1FF;	/* CS0=64MB, CS1=32MB, CS2=32MB, CS3=0 */
+		reg |= 0x4B;
+		break;
+	case CS0_32M_CS1_32M_CS2_32M_CS3_32M:
+		reg &= ~0xFFF;  /* CS0=32MB, CS1=32MB, CS2=32MB, CS3=32MB */
+		reg |= 0x249;
+		break;
+	default:
+		printf("Unknown chip select size: %d\n", cs_size);
+		break;
+	}
+
+	writel(reg, &iomuxc_regs->gpr[1]);
+}