Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 1 | /* |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 2 | * arch/arm/mach-tegra/common.c |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2010 Google, Inc. |
| 5 | * |
| 6 | * Author: |
| 7 | * Colin Cross <ccross@android.com> |
| 8 | * |
| 9 | * This software is licensed under the terms of the GNU General Public |
| 10 | * License version 2, as published by the Free Software Foundation, and |
| 11 | * may be copied, distributed, and modified under those terms. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/io.h> |
Colin Cross | 4de3a8f | 2010-04-05 13:16:42 -0700 | [diff] [blame] | 22 | #include <linux/clk.h> |
| 23 | #include <linux/delay.h> |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 24 | #include <linux/of_irq.h> |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 25 | |
| 26 | #include <asm/hardware/cache-l2x0.h> |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 27 | #include <asm/hardware/gic.h> |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 28 | |
| 29 | #include <mach/iomap.h> |
| 30 | |
| 31 | #include "board.h" |
Colin Cross | d861196 | 2010-01-28 16:40:29 -0800 | [diff] [blame] | 32 | #include "clock.h" |
Colin Cross | 73625e3 | 2010-06-23 15:49:17 -0700 | [diff] [blame] | 33 | #include "fuse.h" |
Colin Cross | d861196 | 2010-01-28 16:40:29 -0800 | [diff] [blame] | 34 | |
Stephen Warren | 6cc04a4 | 2011-12-19 12:24:05 -0700 | [diff] [blame] | 35 | #ifdef CONFIG_OF |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 36 | static const struct of_device_id tegra_dt_irq_match[] __initconst = { |
| 37 | { .compatible = "arm,cortex-a9-gic", .data = gic_of_init }, |
| 38 | { } |
| 39 | }; |
| 40 | |
| 41 | void __init tegra_dt_init_irq(void) |
| 42 | { |
| 43 | tegra_init_irq(); |
| 44 | of_irq_init(tegra_dt_irq_match); |
| 45 | } |
Stephen Warren | 6cc04a4 | 2011-12-19 12:24:05 -0700 | [diff] [blame] | 46 | #endif |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 47 | |
Colin Cross | 699fe14 | 2010-08-23 18:37:25 -0700 | [diff] [blame] | 48 | void tegra_assert_system_reset(char mode, const char *cmd) |
| 49 | { |
Peter De Schrijver | 9bfc3f0 | 2011-12-14 17:03:19 +0200 | [diff] [blame] | 50 | void __iomem *reset = IO_ADDRESS(TEGRA_PMC_BASE + 0); |
Colin Cross | 699fe14 | 2010-08-23 18:37:25 -0700 | [diff] [blame] | 51 | u32 reg; |
| 52 | |
Simon Glass | 375b19c | 2011-02-17 08:13:57 -0800 | [diff] [blame] | 53 | reg = readl_relaxed(reset); |
Peter De Schrijver | 9bfc3f0 | 2011-12-14 17:03:19 +0200 | [diff] [blame] | 54 | reg |= 0x10; |
Simon Glass | 375b19c | 2011-02-17 08:13:57 -0800 | [diff] [blame] | 55 | writel_relaxed(reg, reset); |
Colin Cross | 699fe14 | 2010-08-23 18:37:25 -0700 | [diff] [blame] | 56 | } |
| 57 | |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 58 | #ifdef CONFIG_ARCH_TEGRA_2x_SOC |
| 59 | static __initdata struct tegra_clk_init_table tegra20_clk_init_table[] = { |
Colin Cross | d861196 | 2010-01-28 16:40:29 -0800 | [diff] [blame] | 60 | /* name parent rate enabled */ |
| 61 | { "clk_m", NULL, 0, true }, |
| 62 | { "pll_p", "clk_m", 216000000, true }, |
| 63 | { "pll_p_out1", "pll_p", 28800000, true }, |
| 64 | { "pll_p_out2", "pll_p", 48000000, true }, |
| 65 | { "pll_p_out3", "pll_p", 72000000, true }, |
| 66 | { "pll_p_out4", "pll_p", 108000000, true }, |
Colin Cross | 8486bdd | 2010-06-24 18:57:00 -0700 | [diff] [blame] | 67 | { "sclk", "pll_p_out4", 108000000, true }, |
| 68 | { "hclk", "sclk", 108000000, true }, |
Colin Cross | d861196 | 2010-01-28 16:40:29 -0800 | [diff] [blame] | 69 | { "pclk", "hclk", 54000000, true }, |
Colin Cross | cd51d0e | 2011-02-21 17:05:36 -0800 | [diff] [blame] | 70 | { "csite", NULL, 0, true }, |
| 71 | { "emc", NULL, 0, true }, |
| 72 | { "cpu", NULL, 0, true }, |
Colin Cross | d861196 | 2010-01-28 16:40:29 -0800 | [diff] [blame] | 73 | { NULL, NULL, 0, 0}, |
| 74 | }; |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 75 | #endif |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 76 | |
Peter De Schrijver | 0154867 | 2011-12-14 17:03:20 +0200 | [diff] [blame] | 77 | static void __init tegra_init_cache(u32 tag_latency, u32 data_latency) |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 78 | { |
| 79 | #ifdef CONFIG_CACHE_L2X0 |
| 80 | void __iomem *p = IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x3000; |
Peter De Schrijver | 0154867 | 2011-12-14 17:03:20 +0200 | [diff] [blame] | 81 | u32 aux_ctrl, cache_type; |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 82 | |
Peter De Schrijver | 0154867 | 2011-12-14 17:03:20 +0200 | [diff] [blame] | 83 | writel_relaxed(tag_latency, p + L2X0_TAG_LATENCY_CTRL); |
| 84 | writel_relaxed(data_latency, p + L2X0_DATA_LATENCY_CTRL); |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 85 | |
Peter De Schrijver | 0154867 | 2011-12-14 17:03:20 +0200 | [diff] [blame] | 86 | cache_type = readl(p + L2X0_CACHE_TYPE); |
| 87 | aux_ctrl = (cache_type & 0x700) << (17-8); |
| 88 | aux_ctrl |= 0x6C000001; |
| 89 | |
| 90 | l2x0_init(p, aux_ctrl, 0x8200c3fe); |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 91 | #endif |
Colin Cross | 4de3a8f | 2010-04-05 13:16:42 -0700 | [diff] [blame] | 92 | |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 93 | } |
| 94 | |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 95 | #ifdef CONFIG_ARCH_TEGRA_2x_SOC |
| 96 | void __init tegra20_init_early(void) |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 97 | { |
Nicolas Pitre | daa14d5 | 2011-08-03 12:21:16 -0400 | [diff] [blame] | 98 | disable_hlt(); /* idle WFI usage needs to be confirmed */ |
| 99 | |
Colin Cross | 73625e3 | 2010-06-23 15:49:17 -0700 | [diff] [blame] | 100 | tegra_init_fuse(); |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 101 | tegra2_init_clocks(); |
| 102 | tegra_clk_init_from_table(tegra20_clk_init_table); |
Peter De Schrijver | 0154867 | 2011-12-14 17:03:20 +0200 | [diff] [blame] | 103 | tegra_init_cache(0x331, 0x441); |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 104 | } |
Peter De Schrijver | c37c07d | 2011-12-14 17:03:17 +0200 | [diff] [blame] | 105 | #endif |
Peter De Schrijver | 44107d8 | 2011-12-14 17:03:25 +0200 | [diff] [blame] | 106 | #ifdef CONFIG_ARCH_TEGRA_3x_SOC |
| 107 | void __init tegra30_init_early(void) |
| 108 | { |
| 109 | tegra_init_cache(0x441, 0x551); |
| 110 | } |
| 111 | #endif |