diff options
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index a71de6e..ba8853e 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -413,6 +413,24 @@ static void imx_set_pcie_phy_power_down(void) int arch_cpu_init(void) { +#ifndef CONFIG_MX6SX + /* this bit is not used by imx6sx anymore */ + u32 val; + + /* + * There are about 0.02% percentage, random pcie link down + * when warm-reset is used. + * clear the ref_ssp_en bit16 of gpr1 to workaround it. + * then warm-reset imx6q/dl/solo again. + */ + val = readl(IOMUXC_BASE_ADDR + 0x4); + if (val & (0x1 << 16)) { + val &= ~(0x1 << 16); + writel(val, IOMUXC_BASE_ADDR + 0x4); + reset_cpu(0); + } +#endif + init_aips(); /* Need to clear MMDC_CHx_MASK to make warm reset work. */ |