diff --git a/plat/nvidia/tegra/common/drivers/pmc/pmc.c b/plat/nvidia/tegra/common/drivers/pmc/pmc.c index 30ebdc59df15c34ba6ef2c7ec3d00d0b6bc87a4c..6c5a73bafd86a35df1b8cd31e4ae6b3fbb8a07bf 100644 --- a/plat/nvidia/tegra/common/drivers/pmc/pmc.c +++ b/plat/nvidia/tegra/common/drivers/pmc/pmc.c @@ -122,6 +122,20 @@ bool tegra_pmc_is_last_on_cpu(void) return status; } +/******************************************************************************* + * Handler to be called on exiting System suspend. Right now only DPD registers + * are cleared. + ******************************************************************************/ +void tegra_pmc_resume(void) +{ + + /* Clear DPD sample */ + mmio_write_32((TEGRA_PMC_BASE + PMC_IO_DPD_SAMPLE), 0x0); + + /* Clear DPD Enable */ + mmio_write_32((TEGRA_PMC_BASE + PMC_DPD_ENABLE_0), 0x0); +} + /******************************************************************************* * Restart the system ******************************************************************************/ diff --git a/plat/nvidia/tegra/include/drivers/pmc.h b/plat/nvidia/tegra/include/drivers/pmc.h index c376440f38784a3f5612a54d8e389be0f3459154..32252a28b40ae174c197c584129e71b66c8e0686 100644 --- a/plat/nvidia/tegra/include/drivers/pmc.h +++ b/plat/nvidia/tegra/include/drivers/pmc.h @@ -14,6 +14,7 @@ #include #define PMC_CONFIG U(0x0) +#define PMC_IO_DPD_SAMPLE U(0x20) #define PMC_DPD_ENABLE_0 U(0x24) #define PMC_PWRGATE_STATUS U(0x38) #define PMC_PWRGATE_TOGGLE U(0x30) @@ -22,6 +23,7 @@ #define PMC_CRYPTO_OP_0 U(0xf4) #define PMC_TOGGLE_START U(0x100) #define PMC_SCRATCH39 U(0x138) +#define PMC_SCRATCH41 U(0x140) #define PMC_SECURE_SCRATCH6 U(0x224) #define PMC_SECURE_SCRATCH7 U(0x228) #define PMC_SECURE_DISABLE2 U(0x2c4) @@ -53,6 +55,7 @@ void tegra_pmc_cpu_on(int32_t cpu); void tegra_pmc_cpu_setup(uint64_t reset_addr); bool tegra_pmc_is_last_on_cpu(void); void tegra_pmc_lock_cpu_vectors(void); +void tegra_pmc_resume(void); __dead2 void tegra_pmc_system_reset(void); #endif /* PMC_H */ diff --git a/plat/nvidia/tegra/soc/t210/plat_psci_handlers.c b/plat/nvidia/tegra/soc/t210/plat_psci_handlers.c index fde804d040ecce84a4c9f2cd5859c5fb6ce3ae6c..7907e4606269b9daa90c0784869d5f7c24bd3b11 100644 --- a/plat/nvidia/tegra/soc/t210/plat_psci_handlers.c +++ b/plat/nvidia/tegra/soc/t210/plat_psci_handlers.c @@ -495,6 +495,12 @@ int tegra_soc_pwr_domain_on_finish(const psci_power_state_t *target_state) */ tegra_fc_lock_active_cluster(); + /* + * Resume PMC hardware block for Tegra210 platforms supporting sc7entry-fw + */ + if (!tegra_chipid_is_t210_b01() && (plat_params->sc7entry_fw_base != 0U)) + tegra_pmc_resume(); + return PSCI_E_SUCCESS; }