2 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index dd94797..8f7d1c0 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -356,6 +356,52 @@ static void set_preclk_from_osc(void)
 }
 #endif
 
+#ifdef CONFIG_MX6SX
+void vadc_power_up(void)
+{
+	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+	u32 val;
+
+	/* csi0 */
+	val = readl(&iomux->gpr[5]);
+	val &= ~IMX6SX_GPR5_CSI1_MUX_CTRL_MASK,
+	val |= IMX6SX_GPR5_CSI1_MUX_CTRL_CVD;
+	writel(val, &iomux->gpr[5]);
+
+	/* Power on vadc analog
+	 * Power down vadc ext power */
+	val = readl(GPC_BASE_ADDR + 0);
+	val &= ~0x60000;
+	writel(val, GPC_BASE_ADDR + 0);
+
+	/* software reset afe  */
+	val = readl(&iomux->gpr[1]);
+	writel(val | 0x80000, &iomux->gpr[1]);
+
+	udelay(10*1000);
+
+	/* Release reset bit  */
+	writel(val & ~0x80000, &iomux->gpr[1]);
+
+	/* Power on vadc ext power */
+	val = readl(GPC_BASE_ADDR + 0);
+	val |= 0x40000;
+	writel(val, GPC_BASE_ADDR + 0);
+}
+
+void vadc_power_down(void)
+{
+	u32 val;
+
+	/* Power down vadc ext power
+	 * Power off vadc analog */
+	val = readl(GPC_BASE_ADDR + 0);
+	val &= ~0x40000;
+	val |= 0x20000;
+	writel(val, GPC_BASE_ADDR + 0);
+}
+#endif
+
 int arch_cpu_init(void)
 {
 	init_aips();
diff --git a/arch/arm/include/asm/imx-common/sys_proto.h b/arch/arm/include/asm/imx-common/sys_proto.h
index c58e3b1..3a58a25 100644
--- a/arch/arm/include/asm/imx-common/sys_proto.h
+++ b/arch/arm/include/asm/imx-common/sys_proto.h
@@ -69,4 +69,7 @@ int mxs_wait_mask_clr(struct mxs_register_32 *reg, u32 mask, u32 timeout);
 
 int mmc_get_env_dev(void);
 void board_late_mmc_env_init(void);
+
+void vadc_power_up(void);
+void vadc_power_down(void);
 #endif