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Diffstat (limited to 'drivers/soc/ti/pm33xx.c')
-rw-r--r--drivers/soc/ti/pm33xx.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/soc/ti/pm33xx.c b/drivers/soc/ti/pm33xx.c
index 652739c7f718..d0dab323651f 100644
--- a/drivers/soc/ti/pm33xx.c
+++ b/drivers/soc/ti/pm33xx.c
@@ -41,6 +41,8 @@ static struct am33xx_pm_sram_addr *pm_sram;
static struct device *pm33xx_dev;
static struct wkup_m3_ipc *m3_ipc;
+static unsigned long suspend_wfi_flags;
+
static u32 sram_suspend_address(unsigned long addr)
{
return ((unsigned long)am33xx_do_wfi_sram +
@@ -53,7 +55,7 @@ static int am33xx_pm_suspend(suspend_state_t suspend_state)
int i, ret = 0;
ret = pm_ops->soc_suspend((unsigned long)suspend_state,
- am33xx_do_wfi_sram);
+ am33xx_do_wfi_sram, suspend_wfi_flags);
if (ret) {
dev_err(pm33xx_dev, "PM: Kernel suspend failure\n");
@@ -227,6 +229,7 @@ static int am33xx_push_sram_idle(void)
ro_sram_data.amx3_pm_sram_data_virt = ocmcram_location_data;
ro_sram_data.amx3_pm_sram_data_phys =
gen_pool_virt_to_phys(sram_pool_data, ocmcram_location_data);
+ ro_sram_data.rtc_base_virt = pm_ops->get_rtc_base_addr();
/* Save physical address to calculate resume offset during pm init */
am33xx_do_wfi_sram_phys = gen_pool_virt_to_phys(sram_pool,
@@ -310,6 +313,17 @@ static int am33xx_pm_probe(struct platform_device *pdev)
suspend_set_ops(&am33xx_pm_ops);
#endif /* CONFIG_SUSPEND */
+ /*
+ * For a system suspend we must flush the caches, we want
+ * the DDR in self-refresh, we want to save the context
+ * of the EMIF, and we want the wkup_m3 to handle low-power
+ * transition.
+ */
+ suspend_wfi_flags |= WFI_FLAG_FLUSH_CACHE;
+ suspend_wfi_flags |= WFI_FLAG_SELF_REFRESH;
+ suspend_wfi_flags |= WFI_FLAG_SAVE_EMIF;
+ suspend_wfi_flags |= WFI_FLAG_WAKE_M3;
+
ret = pm_ops->init();
if (ret) {
dev_err(dev, "Unable to call core pm init!\n");