nxp: driver pmu for nxp soc

Driver for NXP IP for Power Management Unit.

Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: I855657eddab357cb182419b188ed8861c46a1b19

drivers/nxp/pmu/pmu.c

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#include <arch.h>
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <dcfg.h>
+#include <lib/mmio.h>
+#include <pmu.h>
+
+void enable_timer_base_to_cluster(uintptr_t nxp_pmu_addr)
+{
+	uint32_t *cltbenr = NULL;
+	uint32_t cltbenr_val = 0U;
+
+	cltbenr = (uint32_t *)(nxp_pmu_addr
+				+ CLUST_TIMER_BASE_ENBL_OFFSET);
+
+	cltbenr_val = mmio_read_32((uintptr_t)cltbenr);
+
+	cltbenr_val = cltbenr_val
+			| (1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+
+	mmio_write_32((uintptr_t)cltbenr, cltbenr_val);
+
+	VERBOSE("Enable cluster time base\n");
+}
+
+/*
+ * Enable core timebase.  In certain Layerscape SoCs, the clock for each core's
+ * has an enable bit in the PMU Physical Core Time Base Enable
+ * Register (PCTBENR), which allows the watchdog to operate.
+ */
+
+void enable_core_tb(uintptr_t nxp_pmu_addr)
+{
+	uint32_t *pctbenr = (uint32_t *) (nxp_pmu_addr +
+					  CORE_TIMEBASE_ENBL_OFFSET);
+
+	mmio_write_32((uintptr_t)pctbenr, 0xff);
+}

drivers/nxp/pmu/pmu.h

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#ifndef PMU_H
+#define PMU_H
+
+/* PMU Registers' OFFSET */
+#define PMU_PCPW20SR_OFFSET		0x830
+#define PMU_CLL2FLUSHSETR_OFFSET	0x1110
+#define PMU_CLSL2FLUSHCLRR_OFFSET	0x1114
+#define PMU_CLL2FLUSHSR_OFFSET		0x1118
+#define PMU_POWMGTCSR_VAL		(1 << 20)
+
+/* PMU Registers */
+#define CORE_TIMEBASE_ENBL_OFFSET	0x8A0
+#define CLUST_TIMER_BASE_ENBL_OFFSET	0x18A0
+
+#define PMU_IDLE_CLUSTER_MASK		0x2
+#define PMU_FLUSH_CLUSTER_MASK		0x2
+#define PMU_IDLE_CORE_MASK		0xfe
+
+/* pmu register offsets and bitmaps */
+#define PMU_POWMGTDCR0_OFFSET		0xC20
+#define PMU_POWMGTCSR_OFFSET		0x4000
+#define PMU_CLAINACTSETR_OFFSET		0x1100
+#define PMU_CLAINACTCLRR_OFFSET		0x1104
+#define PMU_CLSINACTSETR_OFFSET		0x1108
+#define PMU_CLSINACTCLRR_OFFSET		0x110C
+#define PMU_CLL2FLUSHSETR_OFFSET	0x1110
+#define PMU_CLL2FLUSHCLRR_OFFSET	0x1114
+#define PMU_IPPDEXPCR0_OFFSET		0x4040
+#define PMU_IPPDEXPCR1_OFFSET		0x4044
+#define PMU_IPPDEXPCR2_OFFSET		0x4048
+#define PMU_IPPDEXPCR3_OFFSET		0x404C
+#define PMU_IPPDEXPCR4_OFFSET		0x4050
+#define PMU_IPPDEXPCR5_OFFSET		0x4054
+#define PMU_IPPDEXPCR6_OFFSET		0x4058
+#define PMU_IPSTPCR0_OFFSET		0x4120
+#define PMU_IPSTPCR1_OFFSET		0x4124
+#define PMU_IPSTPCR2_OFFSET		0x4128
+#define PMU_IPSTPCR3_OFFSET		0x412C
+#define PMU_IPSTPCR4_OFFSET		0x4130
+#define PMU_IPSTPCR5_OFFSET		0x4134
+#define PMU_IPSTPCR6_OFFSET		0x4138
+#define PMU_IPSTPACKSR0_OFFSET		0x4140
+#define PMU_IPSTPACKSR1_OFFSET		0x4144
+#define PMU_IPSTPACKSR2_OFFSET		0x4148
+#define PMU_IPSTPACKSR3_OFFSET		0x414C
+#define PMU_IPSTPACKSR4_OFFSET		0x4150
+#define PMU_IPSTPACKSR5_OFFSET		0x4154
+#define PMU_IPSTPACKSR6_OFFSET		0x4158
+
+#define CLAINACT_DISABLE_ACP		0xFF
+#define CLSINACT_DISABLE_SKY		0xFF
+#define POWMGTDCR_STP_OV_EN		0x1
+#define POWMGTCSR_LPM20_REQ		0x00100000
+
+/* Used by PMU */
+#define DEVDISR1_MASK			0x024F3504
+#define DEVDISR2_MASK			0x0003FFFF
+#define DEVDISR3_MASK			0x0000303F
+#define DEVDISR4_MASK			0x0000FFFF
+#define DEVDISR5_MASK			0x00F07603
+#define DEVDISR6_MASK			0x00000001
+
+#ifndef __ASSEMBLER__
+void enable_timer_base_to_cluster(uintptr_t nxp_pmu_addr);
+void enable_core_tb(uintptr_t nxp_pmu_addr);
+#endif /* __ASSEMBLER__ */
+
+#endif

drivers/nxp/pmu/pmu.mk

@@ -0,0 +1,28 @@
+#
+# Copyright 2021 NXP
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#-----------------------------------------------------------------------------
+ifeq (${PMU_ADDED},)
+
+PMU_ADDED		:= 1
+
+PMU_DRIVERS_PATH	:=  ${PLAT_DRIVERS_PATH}/pmu
+
+PLAT_INCLUDES		+= -I$(PMU_DRIVERS_PATH)
+
+PMU_SOURCES		+= $(PMU_DRIVERS_PATH)/pmu.c
+
+ifeq (${BL_COMM_PMU_NEEDED},yes)
+BL_COMMON_SOURCES	+= ${PMU_SOURCES}
+else
+ifeq (${BL2_PMU_NEEDED},yes)
+BL2_SOURCES		+= ${PMU_SOURCES}
+endif
+ifeq (${BL31_PMU_NEEDED},yes)
+BL31_SOURCES		+= ${PMU_SOURCES}
+endif
+endif
+endif
+#------------------------------------------------