diff options
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index 99988e1..c2edd5d 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -352,6 +352,34 @@ static void clear_mmdc_ch_mask(void) writel(0, &mxc_ccm->ccdr); } +static void imx_set_vddpu_power_down(void) +{ + struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR; + u32 val; + + /* need to power down xPU in GPC before turn off PU LDO */ + val = readl(GPC_BASE_ADDR + 0x260); + writel(val | 0x1, GPC_BASE_ADDR + 0x260); + + val = readl(GPC_BASE_ADDR + 0x0); + writel(val | 0x1, GPC_BASE_ADDR + 0x0); + while (readl(GPC_BASE_ADDR + 0x0) & 0x1) + ; + + /* disable VDDPU */ + val = 0x3e00; + writel(val, &anatop->reg_core_clr); +} + +static void imx_set_pcie_phy_power_down(void) +{ + u32 val; + + val = readl(IOMUXC_BASE_ADDR + 0x4); + val |= 0x1 << 18; + writel(val, IOMUXC_BASE_ADDR + 0x4); +} + int arch_cpu_init(void) { init_aips(); @@ -369,6 +397,9 @@ int arch_cpu_init(void) imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */ + imx_set_pcie_phy_power_down(); + imx_set_vddpu_power_down(); + #ifdef CONFIG_APBH_DMA /* Start APBH DMA */ mxs_dma_init(); |