diff options
Diffstat (limited to 'plat/mediatek/mt8173/drivers/spm/spm_suspend.c')
| -rw-r--r-- | plat/mediatek/mt8173/drivers/spm/spm_suspend.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/plat/mediatek/mt8173/drivers/spm/spm_suspend.c b/plat/mediatek/mt8173/drivers/spm/spm_suspend.c index 6bf37f3a..843b5f9e 100644 --- a/plat/mediatek/mt8173/drivers/spm/spm_suspend.c +++ b/plat/mediatek/mt8173/drivers/spm/spm_suspend.c @@ -29,6 +29,9 @@ */ #include <bakery_lock.h> #include <debug.h> +#include <delay_timer.h> +#include <mmio.h> +#include <mt8173_def.h> #include <spm.h> #include <spm_suspend.h> @@ -38,8 +41,6 @@ * This driver controls the system power in system suspend flow. */ -#define WAIT_UART_ACK_TIMES 80 /* 80 * 10us */ - #define WAKE_SRC_FOR_SUSPEND \ (WAKE_SRC_KP | WAKE_SRC_EINT | WAKE_SRC_MD32 | \ WAKE_SRC_USB_CD | WAKE_SRC_USB_PDN | WAKE_SRC_THERM | \ @@ -50,6 +51,13 @@ #define spm_is_wakesrc_invalid(wakesrc) \ (!!((unsigned int)(wakesrc) & 0xc0003803)) +#define ARMCA15PLL_CON0 (APMIXED_BASE + 0x200) +#define ARMCA15PLL_CON1 (APMIXED_BASE + 0x204) +#define ARMCA15PLL_PWR_CON0 (APMIXED_BASE + 0x20c) +#define ARMCA15PLL_PWR_ON (1U << 0) +#define ARMCA15PLL_ISO_EN (1U << 1) +#define ARMCA15PLL_EN (1U << 0) + const unsigned int spm_flags = SPM_DUALVCORE_PDN_DIS | SPM_PASR_DIS | SPM_DPD_DIS | SPM_CPU_DVS_DIS | SPM_OPT | SPM_INFRA_PDN_DIS; @@ -293,8 +301,23 @@ static enum wake_reason_t go_to_sleep_after_wfi(void) return last_wr; } +static void bigcore_pll_on(void) +{ + mmio_setbits_32(ARMCA15PLL_PWR_CON0, ARMCA15PLL_PWR_ON); + mmio_clrbits_32(ARMCA15PLL_PWR_CON0, ARMCA15PLL_ISO_EN); + mmio_setbits_32(ARMCA15PLL_CON0, ARMCA15PLL_EN); +} + +static void bigcore_pll_off(void) +{ + mmio_clrbits_32(ARMCA15PLL_CON0, ARMCA15PLL_EN); + mmio_setbits_32(ARMCA15PLL_PWR_CON0, ARMCA15PLL_ISO_EN); + mmio_clrbits_32(ARMCA15PLL_PWR_CON0, ARMCA15PLL_PWR_ON); +} + void spm_system_suspend(void) { + bigcore_pll_off(); spm_lock_get(); go_to_sleep_before_wfi(spm_flags); set_suspend_ready(); @@ -308,4 +331,7 @@ void spm_system_suspend_finish(void) INFO("spm_wake_reason=%d\n", spm_wake_reason); clear_all_ready(); spm_lock_release(); + bigcore_pll_on(); + /* Add 20us delay for turning on PLL*/ + udelay(20); } |