diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/arch-tegra124/flow.h | 10 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/cpu.c | 42 |
2 files changed, 50 insertions, 2 deletions
diff --git a/arch/arm/include/asm/arch-tegra124/flow.h b/arch/arm/include/asm/arch-tegra124/flow.h index 2b330dc9e1..62947bf99c 100644 --- a/arch/arm/include/asm/arch-tegra124/flow.h +++ b/arch/arm/include/asm/arch-tegra124/flow.h @@ -25,6 +25,12 @@ struct flow_ctlr { u32 cpu_pwr_csr; /* offset 0x38 */ u32 mpid; /* offset 0x3c */ u32 ram_repair; /* offset 0x40 */ + u32 flow_dbg_sel; /* offset 0x44 */ + u32 flow_dbg_cnt0; /* offset 0x48 */ + u32 flow_dbg_cnt1; /* offset 0x4c */ + u32 flow_dbg_qual; /* offset 0x50 */ + u32 flow_ctrl_spare; /* offset 0x54 */ + u32 ram_repair_cluster1;/* offset 0x58 */ }; /* HALT_COP_EVENTS_0, 0x04 */ @@ -42,4 +48,8 @@ struct flow_ctlr { #define CSR_WAIT_WFI_SHIFT 8 #define CSR_PWR_OFF_STS (1 << 16) +#define RAM_REPAIR_REQ BIT(0) +#define RAM_REPAIR_STS BIT(1) +#define RAM_REPAIR_BYPASS_EN BIT(2) + #endif /* _TEGRA124_FLOW_H_ */ diff --git a/arch/arm/mach-tegra/tegra124/cpu.c b/arch/arm/mach-tegra/tegra124/cpu.c index 204d6e9539..992c0beb04 100644 --- a/arch/arm/mach-tegra/tegra124/cpu.c +++ b/arch/arm/mach-tegra/tegra124/cpu.c @@ -104,6 +104,43 @@ static void remove_cpu_resets(void) writel(reg, &clkrst->crc_rst_cpug_cmplx_clr); } +static void tegra124_ram_repair(void) +{ + struct flow_ctlr *flow = (struct flow_ctlr *)NV_PA_FLOW_BASE; + u32 ram_repair_timeout; /*usec*/ + u32 val; + + /* + * Request the Flow Controller perform RAM repair whenever it turns on + * a power rail that requires RAM repair. + */ + clrbits_le32(&flow->ram_repair, RAM_REPAIR_BYPASS_EN); + + /* Request SW trigerred RAM repair by setting req bit */ + /* cluster 0 */ + setbits_le32(&flow->ram_repair, RAM_REPAIR_REQ); + /* Wait for completion (status == 0) */ + ram_repair_timeout = 500; + do { + udelay(1); + val = readl(&flow->ram_repair); + } while (!(val & RAM_REPAIR_STS) && ram_repair_timeout--); + if (!ram_repair_timeout) + debug("Ram Repair cluster0 failed\n"); + + /* cluster 1 */ + setbits_le32(&flow->ram_repair_cluster1, RAM_REPAIR_REQ); + /* Wait for completion (status == 0) */ + ram_repair_timeout = 500; + do { + udelay(1); + val = readl(&flow->ram_repair_cluster1); + } while (!(val & RAM_REPAIR_STS) && ram_repair_timeout--); + + if (!ram_repair_timeout) + debug("Ram Repair cluster1 failed\n"); +} + /** * Tegra124 requires some special clock initialization, including setting up * the DVC I2C, turning on MSELECT and selecting the G CPU cluster @@ -254,10 +291,11 @@ void start_cpu(u32 reset_vector) &pmc->pmc_pwrgate_timer_mult); enable_cpu_power_rail(); + powerup_cpus(); + tegra124_ram_repair(); enable_cpu_clocks(); clock_enable_coresight(1); - remove_cpu_resets(); writel(reset_vector, EXCEP_VECTOR_CPU_RESET_VECTOR); - powerup_cpus(); + remove_cpu_resets(); debug("%s exit, should continue @ reset_vector\n", __func__); } |