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openwrt/target/linux/ramips/patches-3.14/0012-MIPS-ralink-add-MT7621-support.patch
Felix Fietkau 68f50c4e2d ramips: downgrade mt7621 "Spurious GIC Interrupt" to debug messages 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 44028
2015-01-18 09:25:49 +00:00

724 lines
20 KiB
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Raw Blame History

From c8c69923236f2f3f184ddcc7eb41c113b5cc3223 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Sun, 27 Jul 2014 10:57:40 +0100
Subject: [PATCH 12/57] MIPS: ralink: add MT7621 support
Signed-off-by: John Crispin <blogic@openwrt.org>
---
arch/mips/include/asm/gic.h | 4 +
arch/mips/include/asm/mach-ralink/irq.h | 9 +
arch/mips/include/asm/mach-ralink/mt7621.h | 39 ++++
arch/mips/kernel/vmlinux.lds.S | 1 +
arch/mips/ralink/Kconfig | 18 ++
arch/mips/ralink/Makefile | 7 +-
arch/mips/ralink/Platform | 5 +
arch/mips/ralink/irq-gic.c | 271 ++++++++++++++++++++++++++++
arch/mips/ralink/malta-amon.c | 81 +++++++++
arch/mips/ralink/mt7621.c | 183 +++++++++++++++++++
10 files changed, 617 insertions(+), 1 deletion(-)
create mode 100644 arch/mips/include/asm/mach-ralink/irq.h
create mode 100644 arch/mips/include/asm/mach-ralink/mt7621.h
create mode 100644 arch/mips/ralink/irq-gic.c
create mode 100644 arch/mips/ralink/malta-amon.c
create mode 100644 arch/mips/ralink/mt7621.c
--- a/arch/mips/include/asm/gic.h
+++ b/arch/mips/include/asm/gic.h
@@ -19,7 +19,11 @@
#define GIC_TRIG_EDGE 1
#define GIC_TRIG_LEVEL 0
+#define GIC_NUM_INTRS 64
+
+#ifndef GIC_NUM_INTRS
#define GIC_NUM_INTRS (24 + NR_CPUS * 2)
+#endif
#define MSK(n) ((1 << (n)) - 1)
#define REG32(addr) (*(volatile unsigned int *) (addr))
--- /dev/null
+++ b/arch/mips/include/asm/mach-ralink/irq.h
@@ -0,0 +1,9 @@
+#ifndef __ASM_MACH_RALINK_IRQ_H
+#define __ASM_MACH_RALINK_IRQ_H
+
+#define GIC_NUM_INTRS 64
+#define NR_IRQS 256
+
+#include_next <irq.h>
+
+#endif
--- /dev/null
+++ b/arch/mips/include/asm/mach-ralink/mt7621.h
@@ -0,0 +1,39 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Parts of this file are based on Ralink's 2.6.21 BSP
+ *
+ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ */
+
+#ifndef _MT7621_REGS_H_
+#define _MT7621_REGS_H_
+
+#define MT7621_SYSC_BASE 0x1E000000
+
+#define SYSC_REG_CHIP_NAME0 0x00
+#define SYSC_REG_CHIP_NAME1 0x04
+#define SYSC_REG_CHIP_REV 0x0c
+#define SYSC_REG_SYSTEM_CONFIG0 0x10
+#define SYSC_REG_SYSTEM_CONFIG1 0x14
+
+#define CHIP_REV_PKG_MASK 0x1
+#define CHIP_REV_PKG_SHIFT 16
+#define CHIP_REV_VER_MASK 0xf
+#define CHIP_REV_VER_SHIFT 8
+#define CHIP_REV_ECO_MASK 0xf
+
+#define MT7621_DRAM_BASE 0x0
+#define MT7621_DDR2_SIZE_MIN 32
+#define MT7621_DDR2_SIZE_MAX 256
+
+#define MT7621_CHIP_NAME0 0x3637544D
+#define MT7621_CHIP_NAME1 0x20203132
+
+#define MIPS_GIC_IRQ_BASE (MIPS_CPU_IRQ_BASE + 8)
+
+#endif
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -51,6 +51,7 @@ SECTIONS
/* read-only */
_text = .; /* Text and read-only data */
.text : {
+ /*. = . + 0x8000; */
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -7,6 +7,11 @@ config CLKEVT_RT3352
select CLKSRC_OF
select CLKSRC_MMIO
+config IRQ_INTC
+ bool
+ default y
+ depends on !SOC_MT7621
+
choice
prompt "Ralink SoC selection"
default SOC_RT305X
@@ -34,6 +39,15 @@ choice
select USB_ARCH_HAS_OHCI
select USB_ARCH_HAS_EHCI
+ config SOC_MT7621
+ bool "MT7621"
+ select MIPS_CPU_SCACHE
+ select SYS_SUPPORTS_MULTITHREADING
+ select SYS_SUPPORTS_SMP
+ select SYS_SUPPORTS_MIPS_CMP
+ select IRQ_GIC
+ select HW_HAS_PCI
+
endchoice
choice
@@ -61,6 +75,10 @@ choice
bool "MT7620A eval kit"
depends on SOC_MT7620
+ config DTB_MT7621_EVAL
+ bool "MT7621 eval kit"
+ depends on SOC_MT7621
+
endchoice
endif
--- a/arch/mips/ralink/Makefile
+++ b/arch/mips/ralink/Makefile
@@ -6,16 +6,21 @@
# Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.org>
# Copyright (C) 2013 John Crispin <blogic@openwrt.org>
-obj-y := prom.o of.o reset.o clk.o irq.o timer.o
+obj-y := prom.o of.o reset.o clk.o timer.o
obj-$(CONFIG_CLKEVT_RT3352) += cevt-rt3352.o
obj-$(CONFIG_RALINK_ILL_ACC) += ill_acc.o
+obj-$(CONFIG_IRQ_INTC) += irq.o
+obj-$(CONFIG_IRQ_GIC) += irq-gic.o
+obj-$(CONFIG_MIPS_MT_SMP) += malta-amon.o
+
obj-$(CONFIG_SOC_RT288X) += rt288x.o
obj-$(CONFIG_SOC_RT305X) += rt305x.o
obj-$(CONFIG_SOC_RT3883) += rt3883.o
obj-$(CONFIG_SOC_MT7620) += mt7620.o
+obj-$(CONFIG_SOC_MT7621) += mt7621.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
--- a/arch/mips/ralink/Platform
+++ b/arch/mips/ralink/Platform
@@ -27,3 +27,8 @@ cflags-$(CONFIG_SOC_RT3883) += -I$(srctr
#
load-$(CONFIG_SOC_MT7620) += 0xffffffff80000000
cflags-$(CONFIG_SOC_MT7620) += -I$(srctree)/arch/mips/include/asm/mach-ralink/mt7620
+
+# Ralink MT7621
+#
+load-$(CONFIG_SOC_MT7621) += 0xffffffff80001000
+cflags-$(CONFIG_SOC_MT7621) += -I$(srctree)/arch/mips/include/asm/mach-ralink/mt7621
--- /dev/null
+++ b/arch/mips/ralink/irq-gic.c
@@ -0,0 +1,271 @@
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/kernel_stat.h>
+#include <linux/hardirq.h>
+#include <linux/preempt.h>
+#include <linux/irqdomain.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+
+#include <asm/irq_cpu.h>
+#include <asm/mipsregs.h>
+
+#include <asm/irq.h>
+#include <asm/setup.h>
+
+#include <asm/gic.h>
+#include <asm/gcmpregs.h>
+
+#include <asm/mach-ralink/mt7621.h>
+
+unsigned long _gcmp_base;
+static int gic_resched_int_base = 56;
+static int gic_call_int_base = 60;
+static struct irq_chip *irq_gic;
+static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS];
+
+#if defined(CONFIG_MIPS_MT_SMP)
+static int gic_resched_int_base;
+static int gic_call_int_base;
+
+#define GIC_RESCHED_INT(cpu) (gic_resched_int_base+(cpu))
+#define GIC_CALL_INT(cpu) (gic_call_int_base+(cpu))
+
+static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
+{
+ scheduler_ipi();
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t
+ipi_call_interrupt(int irq, void *dev_id)
+{
+ smp_call_function_interrupt();
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction irq_resched = {
+ .handler = ipi_resched_interrupt,
+ .flags = IRQF_DISABLED|IRQF_PERCPU,
+ .name = "ipi resched"
+};
+
+static struct irqaction irq_call = {
+ .handler = ipi_call_interrupt,
+ .flags = IRQF_DISABLED|IRQF_PERCPU,
+ .name = "ipi call"
+};
+
+#endif
+
+static void __init
+gic_fill_map(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(gic_intr_map); i++) {
+ gic_intr_map[i].cpunum = 0;
+ gic_intr_map[i].pin = GIC_CPU_INT0;
+ gic_intr_map[i].polarity = GIC_POL_POS;
+ gic_intr_map[i].trigtype = GIC_TRIG_LEVEL;
+ gic_intr_map[i].flags = GIC_FLAG_IPI;
+ }
+
+#if defined(CONFIG_MIPS_MT_SMP)
+ {
+ int cpu;
+
+ gic_call_int_base = ARRAY_SIZE(gic_intr_map) - nr_cpu_ids;
+ gic_resched_int_base = gic_call_int_base - nr_cpu_ids;
+
+ i = gic_resched_int_base;
+
+ for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
+ gic_intr_map[i + cpu].cpunum = cpu;
+ gic_intr_map[i + cpu].pin = GIC_CPU_INT1;
+ gic_intr_map[i + cpu].trigtype = GIC_TRIG_EDGE;
+
+ gic_intr_map[i + cpu + nr_cpu_ids].cpunum = cpu;
+ gic_intr_map[i + cpu + nr_cpu_ids].pin = GIC_CPU_INT2;
+ gic_intr_map[i + cpu + nr_cpu_ids].trigtype = GIC_TRIG_EDGE;
+ }
+ }
+#endif
+}
+
+void
+gic_irq_ack(struct irq_data *d)
+{
+ int irq = (d->irq - gic_irq_base);
+
+ GIC_CLR_INTR_MASK(irq);
+
+ if (gic_irq_flags[irq] & GIC_TRIG_EDGE)
+ GICWRITE(GIC_REG(SHARED, GIC_SH_WEDGE), irq);
+}
+
+void
+gic_finish_irq(struct irq_data *d)
+{
+ GIC_SET_INTR_MASK(d->irq - gic_irq_base);
+}
+
+void __init
+gic_platform_init(int irqs, struct irq_chip *irq_controller)
+{
+ irq_gic = irq_controller;
+}
+
+static void
+gic_irqdispatch(void)
+{
+ unsigned int irq = gic_get_int();
+
+ if (likely(irq < GIC_NUM_INTRS))
+ do_IRQ(MIPS_GIC_IRQ_BASE + irq);
+ else {
+ pr_debug("Spurious GIC Interrupt!\n");
+ spurious_interrupt();
+ }
+
+}
+
+static void
+vi_timer_irqdispatch(void)
+{
+ do_IRQ(cp0_compare_irq);
+}
+
+#if defined(CONFIG_MIPS_MT_SMP)
+unsigned int
+plat_ipi_call_int_xlate(unsigned int cpu)
+{
+ return GIC_CALL_INT(cpu);
+}
+
+unsigned int
+plat_ipi_resched_int_xlate(unsigned int cpu)
+{
+ return GIC_RESCHED_INT(cpu);
+}
+#endif
+
+asmlinkage void
+plat_irq_dispatch(void)
+{
+ unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
+
+ if (unlikely(!pending)) {
+ pr_err("Spurious CP0 Interrupt!\n");
+ spurious_interrupt();
+ } else {
+ if (pending & CAUSEF_IP7)
+ do_IRQ(cp0_compare_irq);
+
+ if (pending & (CAUSEF_IP4 | CAUSEF_IP3 | CAUSEF_IP2))
+ gic_irqdispatch();
+ }
+}
+
+unsigned int __cpuinit
+get_c0_compare_int(void)
+{
+ return CP0_LEGACY_COMPARE_IRQ;
+}
+
+static int
+gic_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
+{
+ irq_set_chip_and_handler(irq, irq_gic,
+#if defined(CONFIG_MIPS_MT_SMP)
+ (hw >= gic_resched_int_base) ?
+ handle_percpu_irq :
+#endif
+ handle_level_irq);
+
+ return 0;
+}
+
+static const struct irq_domain_ops irq_domain_ops = {
+ .xlate = irq_domain_xlate_onecell,
+ .map = gic_map,
+};
+
+static int __init
+of_gic_init(struct device_node *node,
+ struct device_node *parent)
+{
+ struct irq_domain *domain;
+ struct resource gcmp = { 0 }, gic = { 0 };
+ unsigned int gic_rev;
+ int i;
+
+ if (of_address_to_resource(node, 0, &gic))
+ panic("Failed to get gic memory range");
+ if (request_mem_region(gic.start, resource_size(&gic),
+ gic.name) < 0)
+ panic("Failed to request gic memory");
+ if (of_address_to_resource(node, 2, &gcmp))
+ panic("Failed to get gic memory range");
+ if (request_mem_region(gcmp.start, resource_size(&gcmp),
+ gcmp.name) < 0)
+ panic("Failed to request gcmp memory");
+
+ _gcmp_base = (unsigned long) ioremap_nocache(gcmp.start, resource_size(&gcmp));
+ if (!_gcmp_base)
+ panic("Failed to remap gcmp memory\n");
+
+ if ((GCMPGCB(GCMPB) & GCMP_GCB_GCMPB_GCMPBASE_MSK) != gcmp.start)
+ panic("Failed to find gcmp core\n");
+
+ /* tell the gcmp where to find the gic */
+ GCMPGCB(GICBA) = gic.start | GCMP_GCB_GICBA_EN_MSK;
+ gic_present = 1;
+ if (cpu_has_vint) {
+ set_vi_handler(2, gic_irqdispatch);
+ set_vi_handler(3, gic_irqdispatch);
+ set_vi_handler(4, gic_irqdispatch);
+ set_vi_handler(7, vi_timer_irqdispatch);
+ }
+
+ gic_fill_map();
+
+ gic_init(gic.start, resource_size(&gic), gic_intr_map,
+ ARRAY_SIZE(gic_intr_map), MIPS_GIC_IRQ_BASE);
+
+ GICREAD(GIC_REG(SHARED, GIC_SH_REVISIONID), gic_rev);
+ pr_info("gic: revision %d.%d\n", (gic_rev >> 8) & 0xff, gic_rev & 0xff);
+
+ domain = irq_domain_add_legacy(node, GIC_NUM_INTRS, MIPS_GIC_IRQ_BASE,
+ 0, &irq_domain_ops, NULL);
+ if (!domain)
+ panic("Failed to add irqdomain");
+
+#if defined(CONFIG_MIPS_MT_SMP)
+ for (i = 0; i < nr_cpu_ids; i++) {
+ setup_irq(MIPS_GIC_IRQ_BASE + GIC_RESCHED_INT(i), &irq_resched);
+ setup_irq(MIPS_GIC_IRQ_BASE + GIC_CALL_INT(i), &irq_call);
+ }
+#endif
+
+ change_c0_status(ST0_IM, STATUSF_IP7 | STATUSF_IP4 | STATUSF_IP3 |
+ STATUSF_IP2);
+ return 0;
+}
+
+static struct of_device_id __initdata of_irq_ids[] = {
+ { .compatible = "mti,cpu-interrupt-controller", .data = mips_cpu_intc_init },
+ { .compatible = "ralink,mt7621-gic", .data = of_gic_init },
+ {},
+};
+
+void __init
+arch_init_irq(void)
+{
+ of_irq_init(of_irq_ids);
+}
--- /dev/null
+++ b/arch/mips/ralink/malta-amon.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2007 MIPS Technologies, Inc.
+ * All rights reserved.
+
+ * This program is free software; you can distribute it and/or modify it
+ * under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Arbitrary Monitor interface
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+
+#include <asm/addrspace.h>
+#include <asm/mips-boards/launch.h>
+#include <asm/mipsmtregs.h>
+
+int amon_cpu_avail(int cpu)
+{
+ struct cpulaunch *launch = (struct cpulaunch *)CKSEG0ADDR(CPULAUNCH);
+
+ if (cpu < 0 || cpu >= NCPULAUNCH) {
+ pr_debug("avail: cpu%d is out of range\n", cpu);
+ return 0;
+ }
+
+ launch += cpu;
+ if (!(launch->flags & LAUNCH_FREADY)) {
+ pr_debug("avail: cpu%d is not ready\n", cpu);
+ return 0;
+ }
+ if (launch->flags & (LAUNCH_FGO|LAUNCH_FGONE)) {
+ pr_debug("avail: too late.. cpu%d is already gone\n", cpu);
+ return 0;
+ }
+
+ return 1;
+}
+
+void amon_cpu_start(int cpu,
+ unsigned long pc, unsigned long sp,
+ unsigned long gp, unsigned long a0)
+{
+ volatile struct cpulaunch *launch =
+ (struct cpulaunch *)CKSEG0ADDR(CPULAUNCH);
+
+ if (!amon_cpu_avail(cpu))
+ return;
+ if (cpu == smp_processor_id()) {
+ pr_debug("launch: I am cpu%d!\n", cpu);
+ return;
+ }
+ launch += cpu;
+
+ pr_debug("launch: starting cpu%d\n", cpu);
+
+ launch->pc = pc;
+ launch->gp = gp;
+ launch->sp = sp;
+ launch->a0 = a0;
+
+ smp_wmb(); /* Target must see parameters before go */
+ launch->flags |= LAUNCH_FGO;
+ smp_wmb(); /* Target must see go before we poll */
+
+ while ((launch->flags & LAUNCH_FGONE) == 0)
+ ;
+ smp_rmb(); /* Target will be updating flags soon */
+ pr_debug("launch: cpu%d gone!\n", cpu);
+}
--- /dev/null
+++ b/arch/mips/ralink/mt7621.c
@@ -0,0 +1,183 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Parts of this file are based on Ralink's 2.6.21 BSP
+ *
+ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <asm/gcmpregs.h>
+
+#include <asm/mipsregs.h>
+#include <asm/smp-ops.h>
+#include <asm/mach-ralink/ralink_regs.h>
+#include <asm/mach-ralink/mt7621.h>
+
+#include <pinmux.h>
+
+#include "common.h"
+
+#define SYSC_REG_SYSCFG 0x10
+#define SYSC_REG_CPLL_CLKCFG0 0x2c
+#define SYSC_REG_CUR_CLK_STS 0x44
+#define CPU_CLK_SEL (BIT(30) | BIT(31))
+
+#define MT7621_GPIO_MODE_UART1 1
+#define MT7621_GPIO_MODE_I2C 2
+#define MT7621_GPIO_MODE_UART2 3
+#define MT7621_GPIO_MODE_UART3 5
+#define MT7621_GPIO_MODE_JTAG 7
+#define MT7621_GPIO_MODE_WDT_MASK 0x3
+#define MT7621_GPIO_MODE_WDT_SHIFT 8
+#define MT7621_GPIO_MODE_WDT_GPIO 1
+#define MT7621_GPIO_MODE_PCIE_RST 0
+#define MT7621_GPIO_MODE_PCIE_REF 2
+#define MT7621_GPIO_MODE_PCIE_MASK 0x3
+#define MT7621_GPIO_MODE_PCIE_SHIFT 10
+#define MT7621_GPIO_MODE_PCIE_GPIO 1
+#define MT7621_GPIO_MODE_MDIO 12
+#define MT7621_GPIO_MODE_RGMII1 14
+#define MT7621_GPIO_MODE_RGMII2 15
+#define MT7621_GPIO_MODE_SPI_MASK 0x3
+#define MT7621_GPIO_MODE_SPI_SHIFT 16
+#define MT7621_GPIO_MODE_SPI_GPIO 1
+#define MT7621_GPIO_MODE_SDHCI_MASK 0x3
+#define MT7621_GPIO_MODE_SDHCI_SHIFT 18
+#define MT7621_GPIO_MODE_SDHCI_GPIO 1
+
+static struct rt2880_pmx_func uart1_grp[] = { FUNC("uart", 0, 1, 2) };
+static struct rt2880_pmx_func i2c_grp[] = { FUNC("i2c", 0, 3, 2) };
+static struct rt2880_pmx_func uart3_grp[] = { FUNC("uart", 0, 5, 4) };
+static struct rt2880_pmx_func uart2_grp[] = { FUNC("uart", 0, 9, 4) };
+static struct rt2880_pmx_func jtag_grp[] = { FUNC("jtag", 0, 13, 5) };
+static struct rt2880_pmx_func wdt_grp[] = {
+ FUNC("wdt rst", 0, 18, 1),
+ FUNC("wdt refclk", 2, 18, 1),
+};
+static struct rt2880_pmx_func pcie_rst_grp[] = {
+ FUNC("pcie rst", MT7621_GPIO_MODE_PCIE_RST, 19, 1),
+ FUNC("pcie refclk", MT7621_GPIO_MODE_PCIE_REF, 19, 1)
+};
+static struct rt2880_pmx_func mdio_grp[] = { FUNC("mdio", 0, 20, 2) };
+static struct rt2880_pmx_func rgmii2_grp[] = { FUNC("rgmii", 0, 22, 12) };
+static struct rt2880_pmx_func spi_grp[] = {
+ FUNC("spi", 0, 34, 7),
+ FUNC("nand", 2, 34, 8),
+};
+static struct rt2880_pmx_func sdhci_grp[] = {
+ FUNC("sdhci", 0, 41, 8),
+ FUNC("nand", 2, 41, 8),
+};
+static struct rt2880_pmx_func rgmii1_grp[] = { FUNC("rgmii", 0, 49, 12) };
+
+static struct rt2880_pmx_group mt7621_pinmux_data[] = {
+ GRP("uart1", uart1_grp, 1, MT7621_GPIO_MODE_UART1),
+ GRP("i2c", i2c_grp, 1, MT7621_GPIO_MODE_I2C),
+ GRP("uart3", uart2_grp, 1, MT7621_GPIO_MODE_UART2),
+ GRP("uart2", uart3_grp, 1, MT7621_GPIO_MODE_UART3),
+ GRP("jtag", jtag_grp, 1, MT7621_GPIO_MODE_JTAG),
+ GRP_G("wdt", wdt_grp, MT7621_GPIO_MODE_WDT_MASK,
+ MT7621_GPIO_MODE_WDT_GPIO, MT7621_GPIO_MODE_WDT_SHIFT),
+ GRP_G("pcie", pcie_rst_grp, MT7621_GPIO_MODE_PCIE_MASK,
+ MT7621_GPIO_MODE_PCIE_GPIO, MT7621_GPIO_MODE_PCIE_SHIFT),
+ GRP("mdio", mdio_grp, 1, MT7621_GPIO_MODE_MDIO),
+ GRP("rgmii2", rgmii2_grp, 1, MT7621_GPIO_MODE_RGMII2),
+ GRP_G("spi", spi_grp, MT7621_GPIO_MODE_SPI_MASK,
+ MT7621_GPIO_MODE_SPI_GPIO, MT7621_GPIO_MODE_SPI_SHIFT),
+ GRP_G("sdhci", sdhci_grp, MT7621_GPIO_MODE_SDHCI_MASK,
+ MT7621_GPIO_MODE_SDHCI_GPIO, MT7621_GPIO_MODE_SDHCI_SHIFT),
+ GRP("rgmii1", rgmii1_grp, 1, MT7621_GPIO_MODE_RGMII1),
+ { 0 }
+};
+
+void __init ralink_clk_init(void)
+{
+ int cpu_fdiv = 0;
+ int cpu_ffrac = 0;
+ int fbdiv = 0;
+ u32 clk_sts, syscfg;
+ u8 clk_sel = 0, xtal_mode;
+ u32 cpu_clk;
+
+ if ((rt_sysc_r32(SYSC_REG_CPLL_CLKCFG0) & CPU_CLK_SEL) != 0)
+ clk_sel = 1;
+
+ switch (clk_sel) {
+ case 0:
+ clk_sts = rt_sysc_r32(SYSC_REG_CUR_CLK_STS);
+ cpu_fdiv = ((clk_sts >> 8) & 0x1F);
+ cpu_ffrac = (clk_sts & 0x1F);
+ cpu_clk = (500 * cpu_ffrac / cpu_fdiv) * 1000 * 1000;
+ break;
+
+ case 1:
+ fbdiv = ((rt_sysc_r32(0x648) >> 4) & 0x7F) + 1;
+ syscfg = rt_sysc_r32(SYSC_REG_SYSCFG);
+ xtal_mode = (syscfg >> 6) & 0x7;
+ if(xtal_mode >= 6) { //25Mhz Xtal
+ cpu_clk = 25 * fbdiv * 1000 * 1000;
+ } else if(xtal_mode >=3) { //40Mhz Xtal
+ cpu_clk = 40 * fbdiv * 1000 * 1000;
+ } else { // 20Mhz Xtal
+ cpu_clk = 20 * fbdiv * 1000 * 1000;
+ }
+ break;
+ }
+ cpu_clk = 880000000;
+ ralink_clk_add("cpu", cpu_clk);
+ ralink_clk_add("1e000b00.spi", 50000000);
+ ralink_clk_add("1e000c00.uartlite", 50000000);
+ ralink_clk_add("1e000d00.uart", 50000000);
+}
+
+void __init ralink_of_remap(void)
+{
+ rt_sysc_membase = plat_of_remap_node("mtk,mt7621-sysc");
+ rt_memc_membase = plat_of_remap_node("mtk,mt7621-memc");
+
+ if (!rt_sysc_membase || !rt_memc_membase)
+ panic("Failed to remap core resources");
+}
+
+void prom_soc_init(struct ralink_soc_info *soc_info)
+{
+ void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7621_SYSC_BASE);
+ unsigned char *name = NULL;
+ u32 n0;
+ u32 n1;
+ u32 rev;
+
+ n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
+ n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
+
+ if (n0 == MT7621_CHIP_NAME0 && n1 == MT7621_CHIP_NAME1) {
+ name = "MT7621";
+ soc_info->compatible = "mtk,mt7621-soc";
+ } else {
+ panic("mt7621: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
+ }
+
+ rev = __raw_readl(sysc + SYSC_REG_CHIP_REV);
+
+ snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
+ "Mediatek %s ver:%u eco:%u",
+ name,
+ (rev >> CHIP_REV_VER_SHIFT) & CHIP_REV_VER_MASK,
+ (rev & CHIP_REV_ECO_MASK));
+
+ soc_info->mem_size_min = MT7621_DDR2_SIZE_MIN;
+ soc_info->mem_size_max = MT7621_DDR2_SIZE_MAX;
+ soc_info->mem_base = MT7621_DRAM_BASE;
+
+ rt2880_pinmux_data = mt7621_pinmux_data;
+
+ if (register_cmp_smp_ops())
+ panic("failed to register_vsmp_smp_ops()");
+}
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