diff options
| -rw-r--r-- | src/soc/nvidia/tegra210/ccplex.c | 17 | ||||
| -rw-r--r-- | src/soc/nvidia/tegra210/include/soc/clk_rst.h | 3 |
2 files changed, 20 insertions, 0 deletions
diff --git a/src/soc/nvidia/tegra210/ccplex.c b/src/soc/nvidia/tegra210/ccplex.c index f3c61cbbe68f..a3c67225c024 100644 --- a/src/soc/nvidia/tegra210/ccplex.c +++ b/src/soc/nvidia/tegra210/ccplex.c @@ -92,9 +92,26 @@ static void request_ram_repair(void) stopwatch_duration_usecs(&sw)); } +static void set_cpu_ack_width(uint32_t val) +{ + uint32_t reg; + + reg = read32(CLK_RST_REG(cpu_softrst_ctrl2)); + reg &= ~CAR2PMC_CPU_ACK_WIDTH_MASK; + reg |= val; + write32(CLK_RST_REG(cpu_softrst_ctrl2), reg); +} + void ccplex_cpu_prepare(void) { enable_cpu_clocks(); + + /* + * The POR value of CAR2PMC_CPU_ACK_WIDTH is 0x200. + * The recommended value is 0. + */ + set_cpu_ack_width(0); + enable_cpu_power_partitions(); mainboard_configure_pmc(); diff --git a/src/soc/nvidia/tegra210/include/soc/clk_rst.h b/src/soc/nvidia/tegra210/include/soc/clk_rst.h index 817a041422bc..87790d5fb15d 100644 --- a/src/soc/nvidia/tegra210/include/soc/clk_rst.h +++ b/src/soc/nvidia/tegra210/include/soc/clk_rst.h @@ -534,6 +534,9 @@ enum { #define PCLK_DIVISOR_SHIFT 0 #define PCLK_DIVISOR_MASK (3 << AHB_RATE_SHIFT) +/* CPU_SOFTRST_CTRL2_0 0x388 */ +#define CAR2PMC_CPU_ACK_WIDTH_MASK 0xfff + /* CRC_CLK_SOURCE_MSELECT_0 0x3b4 */ #define MSELECT_CLK_SRC_PLLP_OUT0 (0 << 29) |