--- /dev/null
+/*
+ * Copyright (c) 2021, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <drivers/delay_timer.h>
+#include <rtc.h>
+
+static void RTC_Config_Interface(uint32_t addr, uint16_t data,
+ uint16_t MASK, uint16_t SHIFT)
+{
+ uint16_t pmic_reg = 0;
+
+ pmic_reg = RTC_Read(addr);
+
+ pmic_reg &= ~(MASK << SHIFT);
+ pmic_reg |= (data << SHIFT);
+
+ RTC_Write(addr, pmic_reg);
+}
+
+static void rtc_disable_2sec_reboot(void)
+{
+ uint16_t reboot;
+
+ reboot = (RTC_Read(RTC_AL_SEC) & ~RTC_BBPU_2SEC_EN) &
+ ~RTC_BBPU_AUTO_PDN_SEL;
+ RTC_Write(RTC_AL_SEC, reboot);
+ RTC_Write_Trigger();
+}
+
+static void rtc_xosc_write(uint16_t val, bool reload)
+{
+ uint16_t bbpu;
+
+ RTC_Write(RTC_OSC32CON, RTC_OSC32CON_UNLOCK1);
+ rtc_busy_wait();
+ RTC_Write(RTC_OSC32CON, RTC_OSC32CON_UNLOCK2);
+ rtc_busy_wait();
+
+ RTC_Write(RTC_OSC32CON, val);
+ rtc_busy_wait();
+
+ if (reload) {
+ bbpu = RTC_Read(RTC_BBPU) | RTC_BBPU_KEY | RTC_BBPU_RELOAD;
+ RTC_Write(RTC_BBPU, bbpu);
+ RTC_Write_Trigger();
+ }
+}
+
+static void rtc_enable_k_eosc(void)
+{
+ uint16_t osc32;
+ uint16_t rtc_eosc_cali_td = 8; /* eosc cali period time */
+
+ /* Truning on eosc cali mode clock */
+ RTC_Config_Interface(PMIC_RG_TOP_CON, 1,
+ PMIC_RG_SRCLKEN_IN0_HW_MODE_MASK,
+ PMIC_RG_SRCLKEN_IN0_HW_MODE_SHIFT);
+ RTC_Config_Interface(PMIC_RG_TOP_CON, 1,
+ PMIC_RG_SRCLKEN_IN1_HW_MODE_MASK,
+ PMIC_RG_SRCLKEN_IN1_HW_MODE_SHIFT);
+ RTC_Config_Interface(PMIC_RG_SCK_TOP_CKPDN_CON0, 0,
+ PMIC_RG_RTC_EOSC32_CK_PDN_MASK,
+ PMIC_RG_RTC_EOSC32_CK_PDN_SHIFT);
+
+ switch (rtc_eosc_cali_td) {
+ case 1:
+ RTC_Config_Interface(PMIC_RG_EOSC_CALI_CON0, 0x3,
+ PMIC_RG_EOSC_CALI_TD_MASK, PMIC_RG_EOSC_CALI_TD_SHIFT);
+ break;
+ case 2:
+ RTC_Config_Interface(PMIC_RG_EOSC_CALI_CON0, 0x4,
+ PMIC_RG_EOSC_CALI_TD_MASK, PMIC_RG_EOSC_CALI_TD_SHIFT);
+ break;
+ case 4:
+ RTC_Config_Interface(PMIC_RG_EOSC_CALI_CON0, 0x5,
+ PMIC_RG_EOSC_CALI_TD_MASK, PMIC_RG_EOSC_CALI_TD_SHIFT);
+ break;
+ case 16:
+ RTC_Config_Interface(PMIC_RG_EOSC_CALI_CON0, 0x7,
+ PMIC_RG_EOSC_CALI_TD_MASK, PMIC_RG_EOSC_CALI_TD_SHIFT);
+ break;
+ default:
+ RTC_Config_Interface(PMIC_RG_EOSC_CALI_CON0, 0x6,
+ PMIC_RG_EOSC_CALI_TD_MASK, PMIC_RG_EOSC_CALI_TD_SHIFT);
+ break;
+ }
+ /* Switch the DCXO from 32k-less mode to RTC mode,
+ * otherwise, EOSC cali will fail
+ */
+ /* RTC mode will have only OFF mode and FPM */
+ RTC_Config_Interface(PMIC_RG_DCXO_CW02, 0, PMIC_RG_XO_EN32K_MAN_MASK,
+ PMIC_RG_XO_EN32K_MAN_SHIFT);
+ RTC_Write(RTC_BBPU,
+ RTC_Read(RTC_BBPU) | RTC_BBPU_KEY | RTC_BBPU_RELOAD);
+ RTC_Write_Trigger();
+ /* Enable K EOSC mode for normal power off and then plug out battery */
+ RTC_Write(RTC_AL_YEA, ((RTC_Read(RTC_AL_YEA) | RTC_K_EOSC_RSV_0)
+ & (~RTC_K_EOSC_RSV_1)) | RTC_K_EOSC_RSV_2);
+ RTC_Write_Trigger();
+
+ osc32 = RTC_Read(RTC_OSC32CON);
+ rtc_xosc_write(osc32 | RTC_EMBCK_SRC_SEL, true);
+ INFO("[RTC] RTC_enable_k_eosc\n");
+}
+
+void rtc_power_off_sequence(void)
+{
+ uint16_t bbpu;
+
+ rtc_disable_2sec_reboot();
+ rtc_enable_k_eosc();
+
+ /* clear alarm */
+ bbpu = RTC_BBPU_KEY | RTC_BBPU_CLR | RTC_BBPU_PWREN;
+ if (Writeif_unlock()) {
+ RTC_Write(RTC_BBPU, bbpu);
+
+ RTC_Write(RTC_AL_MASK, RTC_AL_MASK_DOW);
+ RTC_Write_Trigger();
+ mdelay(1);
+
+ bbpu = RTC_Read(RTC_BBPU) | RTC_BBPU_KEY | RTC_BBPU_RELOAD;
+ RTC_Write(RTC_BBPU, bbpu);
+ RTC_Write_Trigger();
+ INFO("[RTC] BBPU=0x%x, IRQ_EN=0x%x, AL_MSK=0x%x, AL_SEC=0x%x\n",
+ RTC_Read(RTC_BBPU), RTC_Read(RTC_IRQ_EN),
+ RTC_Read(RTC_AL_MASK), RTC_Read(RTC_AL_SEC));
+ }
+}
--- /dev/null
+/*
+ * Copyright (c) 2021, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef RTC_H
+#define RTC_H
+
+#define PMIC_RG_SRCLKEN_IN0_HW_MODE_MASK (1U)
+#define PMIC_RG_SRCLKEN_IN0_HW_MODE_SHIFT (1U)
+#define PMIC_RG_SRCLKEN_IN1_HW_MODE_MASK (1U)
+#define PMIC_RG_SRCLKEN_IN1_HW_MODE_SHIFT (3U)
+#define PMIC_RG_RTC_EOSC32_CK_PDN_MASK (1U)
+#define PMIC_RG_RTC_EOSC32_CK_PDN_SHIFT (2U)
+#define PMIC_RG_EOSC_CALI_TD_MASK (7U)
+#define PMIC_RG_EOSC_CALI_TD_SHIFT (5U)
+#define PMIC_RG_XO_EN32K_MAN_MASK (1U)
+#define PMIC_RG_XO_EN32K_MAN_SHIFT (0U)
+
+/* RTC registers */
+enum {
+ RTC_BBPU = 0x0588,
+ RTC_IRQ_STA = 0x058A,
+ RTC_IRQ_EN = 0x058C,
+ RTC_CII_EN = 0x058E
+};
+
+enum {
+ RTC_AL_SEC = 0x05A0,
+ RTC_AL_MIN = 0x05A2,
+ RTC_AL_HOU = 0x05A4,
+ RTC_AL_DOM = 0x05A6,
+ RTC_AL_DOW = 0x05A8,
+ RTC_AL_MTH = 0x05AA,
+ RTC_AL_YEA = 0x05AC,
+ RTC_AL_MASK = 0x0590
+};
+
+enum {
+ RTC_OSC32CON = 0x05AE,
+ RTC_CON = 0x05C4,
+ RTC_WRTGR = 0x05C2
+};
+
+enum {
+ RTC_PDN1 = 0x05B4,
+ RTC_PDN2 = 0x05B6,
+ RTC_SPAR0 = 0x05B8,
+ RTC_SPAR1 = 0x05BA,
+ RTC_PROT = 0x05BC,
+ RTC_DIFF = 0x05BE,
+ RTC_CALI = 0x05C0
+};
+
+enum {
+ RTC_OSC32CON_UNLOCK1 = 0x1A57,
+ RTC_OSC32CON_UNLOCK2 = 0x2B68
+};
+
+enum {
+ RTC_PROT_UNLOCK1 = 0x586A,
+ RTC_PROT_UNLOCK2 = 0x9136
+};
+
+enum {
+ RTC_BBPU_PWREN = 1U << 0,
+ RTC_BBPU_CLR = 1U << 1,
+ RTC_BBPU_INIT = 1U << 2,
+ RTC_BBPU_AUTO = 1U << 3,
+ RTC_BBPU_CLRPKY = 1U << 4,
+ RTC_BBPU_RELOAD = 1U << 5,
+ RTC_BBPU_CBUSY = 1U << 6
+};
+
+enum {
+ RTC_AL_MASK_SEC = 1U << 0,
+ RTC_AL_MASK_MIN = 1U << 1,
+ RTC_AL_MASK_HOU = 1U << 2,
+ RTC_AL_MASK_DOM = 1U << 3,
+ RTC_AL_MASK_DOW = 1U << 4,
+ RTC_AL_MASK_MTH = 1U << 5,
+ RTC_AL_MASK_YEA = 1U << 6
+};
+
+enum {
+ RTC_BBPU_AUTO_PDN_SEL = 1U << 6,
+ RTC_BBPU_2SEC_CK_SEL = 1U << 7,
+ RTC_BBPU_2SEC_EN = 1U << 8,
+ RTC_BBPU_2SEC_MODE = 0x3 << 9,
+ RTC_BBPU_2SEC_STAT_CLEAR = 1U << 11,
+ RTC_BBPU_2SEC_STAT_STA = 1U << 12
+};
+
+enum {
+ RTC_BBPU_KEY = 0x43 << 8
+};
+
+enum {
+ RTC_EMBCK_SRC_SEL = 1 << 8,
+ RTC_EMBCK_SEL_MODE = 3 << 6,
+ RTC_XOSC32_ENB = 1 << 5,
+ RTC_REG_XOSC32_ENB = 1 << 15
+};
+
+enum {
+ RTC_K_EOSC_RSV_0 = 1 << 8,
+ RTC_K_EOSC_RSV_1 = 1 << 9,
+ RTC_K_EOSC_RSV_2 = 1 << 10
+};
+
+/* PMIC TOP Register Definition */
+enum {
+ PMIC_RG_TOP_CON = 0x001E,
+ PMIC_RG_TOP_CKPDN_CON1 = 0x0112,
+ PMIC_RG_TOP_CKPDN_CON1_SET = 0x0114,
+ PMIC_RG_TOP_CKPDN_CON1_CLR = 0x0116,
+ PMIC_RG_TOP_CKSEL_CON0 = 0x0118,
+ PMIC_RG_TOP_CKSEL_CON0_SET = 0x011A,
+ PMIC_RG_TOP_CKSEL_CON0_CLR = 0x011C
+};
+
+/* PMIC SCK Register Definition */
+enum {
+ PMIC_RG_SCK_TOP_CKPDN_CON0 = 0x051A,
+ PMIC_RG_SCK_TOP_CKPDN_CON0_SET = 0x051C,
+ PMIC_RG_SCK_TOP_CKPDN_CON0_CLR = 0x051E,
+ PMIC_RG_EOSC_CALI_CON0 = 0x540
+};
+
+/* PMIC DCXO Register Definition */
+enum {
+ PMIC_RG_DCXO_CW00 = 0x0788,
+ PMIC_RG_DCXO_CW02 = 0x0790
+};
+
+/* external API */
+uint16_t RTC_Read(uint32_t addr);
+void RTC_Write(uint32_t addr, uint16_t data);
+int32_t rtc_busy_wait(void);
+int32_t RTC_Write_Trigger(void);
+int32_t Writeif_unlock(void);
+void rtc_power_off_sequence(void);
+
+#endif /* RTC_H */
-I${MTK_PLAT_SOC}/drivers/emi_mpu/ \
-I${MTK_PLAT_SOC}/drivers/gpio/ \
-I${MTK_PLAT_SOC}/drivers/pmic/ \
+ -I${MTK_PLAT_SOC}/drivers/rtc/ \
-I${MTK_PLAT_SOC}/include/
GICV3_SUPPORT_GIC600 := 1
${MTK_PLAT}/common/drivers/gic600/mt_gic_v3.c \
${MTK_PLAT}/common/drivers/gpio/mtgpio_common.c \
${MTK_PLAT}/common/drivers/pmic_wrap/pmic_wrap_init.c \
+ ${MTK_PLAT}/common/drivers/rtc/rtc_common.c \
${MTK_PLAT}/common/mtk_plat_common.c \
${MTK_PLAT}/common/mtk_sip_svc.c \
${MTK_PLAT}/common/params_setup.c \
${MTK_PLAT_SOC}/drivers/emi_mpu/emi_mpu.c \
${MTK_PLAT_SOC}/drivers/gpio/mtgpio.c \
${MTK_PLAT_SOC}/drivers/pmic/pmic.c \
+ ${MTK_PLAT_SOC}/drivers/rtc/rtc.c \
${MTK_PLAT_SOC}/plat_pm.c \
${MTK_PLAT_SOC}/plat_sip_calls.c \
${MTK_PLAT_SOC}/plat_topology.c
projects / arm-tf.git / commitdiff