diff options
| -rw-r--r-- | cpu/arm_cortexa8/mx6/generic.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/cpu/arm_cortexa8/mx6/generic.c b/cpu/arm_cortexa8/mx6/generic.c index 6a98d044ea..a3d965ccb1 100644 --- a/cpu/arm_cortexa8/mx6/generic.c +++ b/cpu/arm_cortexa8/mx6/generic.c @@ -100,6 +100,9 @@ enum pll_clocks { #define NFC_CLK_MAX PLL2_FREQ_MAX #endif +#define GPC_PGC_GPU_PGCR_OFFSET 0x260 +#define GPC_CNTR_OFFSET 0x0 + #define OCOTP_THERMAL_OFFSET 0x4E0 #define TEMPERATURE_MIN -40 #define TEMPERATURE_HOT 80 @@ -1013,10 +1016,19 @@ int arch_cpu_init(void) #ifndef CONFIG_L2_OFF l2_cache_enable(); #endif + /* Need to power down xPU in GPC before turn off PU LDO */ + val = readl(GPC_BASE_ADDR + GPC_PGC_GPU_PGCR_OFFSET); + writel(val | 0x1, GPC_BASE_ADDR + GPC_PGC_GPU_PGCR_OFFSET); + + val = readl(GPC_BASE_ADDR + GPC_CNTR_OFFSET); + writel(val | 0x1, GPC_BASE_ADDR + GPC_CNTR_OFFSET); + while (readl(GPC_BASE_ADDR + GPC_CNTR_OFFSET) & 0x1) + ; - /* Increase the VDDSOC to 1.2V */ + /* Increase the VDDSOC to 1.2V and disable VDDPU */ val = REG_RD(ANATOP_BASE_ADDR, HW_ANADIG_REG_CORE); val &= ~BM_ANADIG_REG_CORE_REG2_TRG; + val &= ~BM_ANADIG_REG_CORE_REG1_TRG; val |= BF_ANADIG_REG_CORE_REG2_TRG(0x14); REG_WR(ANATOP_BASE_ADDR, HW_ANADIG_REG_CORE, val); |