From d861196163e30c07add471562b45dce38517c9b2 Mon Sep 17 00:00:00 2001 From: Colin Cross Date: Thu, 28 Jan 2010 16:40:29 -0800 Subject: [ARM] tegra: Add clock support v2: fixes from Russell King: - include linux/io.h instead of asm/io.h - fix whitespace in Kconfig - Use spin_lock_init to initialize lock - Return -ENOSYS instead of BUG for unimplemented clock ops - Use proper return values in tegra2 clock ops additional changes: - Rename some clocks to match dev_ids - add rate propagation - add debugfs entries - add support for clock listed in clk_lookup under multiple dev_ids v3: - Replace per-clock locking with global clock lock - Autodetect clock state on init - Let clock dividers pick next lower possible frequency - Add support for clock init tables - Minor bug fixes - Fix checkpatch issues Signed-off-by: Colin Cross --- arch/arm/mach-tegra/tegra2_clocks.c | 1359 +++++++++++++++++++++++++++++++++++ 1 file changed, 1359 insertions(+) create mode 100644 arch/arm/mach-tegra/tegra2_clocks.c (limited to 'arch/arm/mach-tegra/tegra2_clocks.c') diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c new file mode 100644 index 000000000000..426163231fff --- /dev/null +++ b/arch/arm/mach-tegra/tegra2_clocks.c @@ -0,0 +1,1359 @@ +/* + * arch/arm/mach-tegra/tegra2_clocks.c + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that 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. + * + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include + +#include "clock.h" + +#define RST_DEVICES 0x004 +#define RST_DEVICES_SET 0x300 +#define RST_DEVICES_CLR 0x304 + +#define CLK_OUT_ENB 0x010 +#define CLK_OUT_ENB_SET 0x320 +#define CLK_OUT_ENB_CLR 0x324 + +#define OSC_CTRL 0x50 +#define OSC_CTRL_OSC_FREQ_MASK (3<<30) +#define OSC_CTRL_OSC_FREQ_13MHZ (0<<30) +#define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30) +#define OSC_CTRL_OSC_FREQ_12MHZ (2<<30) +#define OSC_CTRL_OSC_FREQ_26MHZ (3<<30) + +#define OSC_FREQ_DET 0x58 +#define OSC_FREQ_DET_TRIG (1<<31) + +#define OSC_FREQ_DET_STATUS 0x5C +#define OSC_FREQ_DET_BUSY (1<<31) +#define OSC_FREQ_DET_CNT_MASK 0xFFFF + +#define PERIPH_CLK_SOURCE_MASK (3<<30) +#define PERIPH_CLK_SOURCE_SHIFT 30 +#define PERIPH_CLK_SOURCE_ENABLE (1<<28) +#define PERIPH_CLK_SOURCE_DIV_MASK 0xFF +#define PERIPH_CLK_SOURCE_DIV_SHIFT 0 + +#define PLL_BASE 0x0 +#define PLL_BASE_BYPASS (1<<31) +#define PLL_BASE_ENABLE (1<<30) +#define PLL_BASE_REF_ENABLE (1<<29) +#define PLL_BASE_OVERRIDE (1<<28) +#define PLL_BASE_LOCK (1<<27) +#define PLL_BASE_DIVP_MASK (0x7<<20) +#define PLL_BASE_DIVP_SHIFT 20 +#define PLL_BASE_DIVN_MASK (0x3FF<<8) +#define PLL_BASE_DIVN_SHIFT 8 +#define PLL_BASE_DIVM_MASK (0x1F) +#define PLL_BASE_DIVM_SHIFT 0 + +#define PLL_OUT_RATIO_MASK (0xFF<<8) +#define PLL_OUT_RATIO_SHIFT 8 +#define PLL_OUT_OVERRIDE (1<<2) +#define PLL_OUT_CLKEN (1<<1) +#define PLL_OUT_RESET_DISABLE (1<<0) + +#define PLL_MISC(c) (((c)->flags & PLL_ALT_MISC_REG) ? 0x4 : 0xc) +#define PLL_MISC_DCCON_SHIFT 20 +#define PLL_MISC_LOCK_ENABLE (1<<18) +#define PLL_MISC_CPCON_SHIFT 8 +#define PLL_MISC_CPCON_MASK (0xF<clk_num / 32) * 4) +#define PERIPH_CLK_TO_ENB_SET_REG(c) ((c->clk_num / 32) * 8) +#define PERIPH_CLK_TO_ENB_BIT(c) (1 << (c->clk_num % 32)) + +#define SUPER_CLK_MUX 0x00 +#define SUPER_STATE_SHIFT 28 +#define SUPER_STATE_MASK (0xF << SUPER_STATE_SHIFT) +#define SUPER_STATE_STANDBY (0x0 << SUPER_STATE_SHIFT) +#define SUPER_STATE_IDLE (0x1 << SUPER_STATE_SHIFT) +#define SUPER_STATE_RUN (0x2 << SUPER_STATE_SHIFT) +#define SUPER_STATE_IRQ (0x3 << SUPER_STATE_SHIFT) +#define SUPER_STATE_FIQ (0x4 << SUPER_STATE_SHIFT) +#define SUPER_SOURCE_MASK 0xF +#define SUPER_FIQ_SOURCE_SHIFT 12 +#define SUPER_IRQ_SOURCE_SHIFT 8 +#define SUPER_RUN_SOURCE_SHIFT 4 +#define SUPER_IDLE_SOURCE_SHIFT 0 + +#define SUPER_CLK_DIVIDER 0x04 + +#define BUS_CLK_DISABLE (1<<3) +#define BUS_CLK_DIV_MASK 0x3 + +static void __iomem *reg_clk_base = IO_ADDRESS(TEGRA_CLK_RESET_BASE); + +#define clk_writel(value, reg) \ + __raw_writel(value, (u32)reg_clk_base + (reg)) +#define clk_readl(reg) \ + __raw_readl((u32)reg_clk_base + (reg)) + +unsigned long clk_measure_input_freq(void) +{ + u32 clock_autodetect; + clk_writel(OSC_FREQ_DET_TRIG | 1, OSC_FREQ_DET); + do {} while (clk_readl(OSC_FREQ_DET_STATUS) & OSC_FREQ_DET_BUSY); + clock_autodetect = clk_readl(OSC_FREQ_DET_STATUS); + if (clock_autodetect >= 732 - 3 && clock_autodetect <= 732 + 3) { + return 12000000; + } else if (clock_autodetect >= 794 - 3 && clock_autodetect <= 794 + 3) { + return 13000000; + } else if (clock_autodetect >= 1172 - 3 && clock_autodetect <= 1172 + 3) { + return 19200000; + } else if (clock_autodetect >= 1587 - 3 && clock_autodetect <= 1587 + 3) { + return 26000000; + } else { + pr_err("%s: Unexpected clock autodetect value %d", __func__, clock_autodetect); + BUG(); + return 0; + } +} + +static int clk_div71_get_divider(struct clk *c, unsigned long rate) +{ + unsigned long divider_u71; + + divider_u71 = DIV_ROUND_UP(c->rate * 2, rate); + + if (divider_u71 - 2 > 255 || divider_u71 - 2 < 0) + return -EINVAL; + + return divider_u71 - 2; +} + +static unsigned long tegra2_clk_recalculate_rate(struct clk *c) +{ + unsigned long rate; + rate = c->parent->rate; + + if (c->mul != 0 && c->div != 0) + c->rate = rate * c->mul / c->div; + else + c->rate = rate; + return c->rate; +} + + +/* clk_m functions */ +static unsigned long tegra2_clk_m_autodetect_rate(struct clk *c) +{ + u32 auto_clock_control = clk_readl(OSC_CTRL) & ~OSC_CTRL_OSC_FREQ_MASK; + + c->rate = clk_measure_input_freq(); + switch (c->rate) { + case 12000000: + auto_clock_control |= OSC_CTRL_OSC_FREQ_12MHZ; + break; + case 13000000: + auto_clock_control |= OSC_CTRL_OSC_FREQ_13MHZ; + break; + case 19200000: + auto_clock_control |= OSC_CTRL_OSC_FREQ_19_2MHZ; + break; + case 26000000: + auto_clock_control |= OSC_CTRL_OSC_FREQ_26MHZ; + break; + default: + pr_err("%s: Unexpected clock rate %ld", __func__, c->rate); + BUG(); + } + clk_writel(auto_clock_control, OSC_CTRL); + return c->rate; +} + +static void tegra2_clk_m_init(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + tegra2_clk_m_autodetect_rate(c); +} + +static int tegra2_clk_m_enable(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + return 0; +} + +static void tegra2_clk_m_disable(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + BUG(); +} + +static struct clk_ops tegra_clk_m_ops = { + .init = tegra2_clk_m_init, + .enable = tegra2_clk_m_enable, + .disable = tegra2_clk_m_disable, +}; + +/* super clock functions */ +/* "super clocks" on tegra have two-stage muxes and a clock skipping + * super divider. We will ignore the clock skipping divider, since we + * can't lower the voltage when using the clock skip, but we can if we + * lower the PLL frequency. + */ +static void tegra2_super_clk_init(struct clk *c) +{ + u32 val; + int source; + int shift; + const struct clk_mux_sel *sel; + val = clk_readl(c->reg + SUPER_CLK_MUX); + c->state = ON; + BUG_ON(((val & SUPER_STATE_MASK) != SUPER_STATE_RUN) && + ((val & SUPER_STATE_MASK) != SUPER_STATE_IDLE)); + shift = ((val & SUPER_STATE_MASK) == SUPER_STATE_IDLE) ? + SUPER_IDLE_SOURCE_SHIFT : SUPER_RUN_SOURCE_SHIFT; + source = (val >> shift) & SUPER_SOURCE_MASK; + for (sel = c->inputs; sel->input != NULL; sel++) { + if (sel->value == source) + break; + } + BUG_ON(sel->input == NULL); + c->parent = sel->input; + tegra2_clk_recalculate_rate(c); +} + +static int tegra2_super_clk_enable(struct clk *c) +{ + clk_writel(0, c->reg + SUPER_CLK_DIVIDER); + return 0; +} + +static void tegra2_super_clk_disable(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + + /* oops - don't disable the CPU clock! */ + BUG(); +} + +static int tegra2_super_clk_set_parent(struct clk *c, struct clk *p) +{ + u32 val; + const struct clk_mux_sel *sel; + int shift; + val = clk_readl(c->reg + SUPER_CLK_MUX);; + BUG_ON(((val & SUPER_STATE_MASK) != SUPER_STATE_RUN) && + ((val & SUPER_STATE_MASK) != SUPER_STATE_IDLE)); + shift = ((val & SUPER_STATE_MASK) == SUPER_STATE_IDLE) ? + SUPER_IDLE_SOURCE_SHIFT : SUPER_RUN_SOURCE_SHIFT; + for (sel = c->inputs; sel->input != NULL; sel++) { + if (sel->input == p) { + clk_reparent(c, p); + val &= ~(SUPER_SOURCE_MASK << shift); + val |= sel->value << shift; + clk_writel(val, c->reg); + c->rate = c->parent->rate; + return 0; + } + } + return -EINVAL; +} + +static struct clk_ops tegra_super_ops = { + .init = tegra2_super_clk_init, + .enable = tegra2_super_clk_enable, + .disable = tegra2_super_clk_disable, + .set_parent = tegra2_super_clk_set_parent, + .recalculate_rate = tegra2_clk_recalculate_rate, +}; + +/* bus clock functions */ +static void tegra2_bus_clk_init(struct clk *c) +{ + u32 val = clk_readl(c->reg); + c->state = ((val >> c->reg_shift) & BUS_CLK_DISABLE) ? OFF : ON; + c->div = ((val >> c->reg_shift) & BUS_CLK_DIV_MASK) + 1; + c->mul = 1; + tegra2_clk_recalculate_rate(c); +} + +static int tegra2_bus_clk_enable(struct clk *c) +{ + u32 val = clk_readl(c->reg); + val &= ~(BUS_CLK_DISABLE << c->reg_shift); + clk_writel(val, c->reg); + return 0; +} + +static void tegra2_bus_clk_disable(struct clk *c) +{ + u32 val = clk_readl(c->reg); + val |= BUS_CLK_DISABLE << c->reg_shift; + clk_writel(val, c->reg); +} + +static int tegra2_bus_clk_set_rate(struct clk *c, unsigned long rate) +{ + u32 val = clk_readl(c->reg); + unsigned long parent_rate = c->parent->rate; + int i; + for (i = 1; i <= 4; i++) { + if (rate == parent_rate / i) { + val &= ~(BUS_CLK_DIV_MASK << c->reg_shift); + val |= (i - 1) << c->reg_shift; + clk_writel(val, c->reg); + c->div = i; + c->mul = 1; + return 0; + } + } + return -EINVAL; +} + +static struct clk_ops tegra_bus_ops = { + .init = tegra2_bus_clk_init, + .enable = tegra2_bus_clk_enable, + .disable = tegra2_bus_clk_disable, + .set_rate = tegra2_bus_clk_set_rate, + .recalculate_rate = tegra2_clk_recalculate_rate, +}; + +/* PLL Functions */ +static unsigned long tegra2_pll_clk_recalculate_rate(struct clk *c) +{ + u64 rate; + rate = c->parent->rate; + rate *= c->n; + do_div(rate, c->m); + if (c->p == 2) + rate >>= 1; + c->rate = rate; + return c->rate; +} + +static int tegra2_pll_clk_wait_for_lock(struct clk *c) +{ + ktime_t before; + + before = ktime_get(); + while (!(clk_readl(c->reg + PLL_BASE) & PLL_BASE_LOCK)) { + if (ktime_us_delta(ktime_get(), before) > 5000) { + pr_err("Timed out waiting for lock bit on pll %s", + c->name); + return -1; + } + } + + return 0; +} + +static void tegra2_pll_clk_init(struct clk *c) +{ + u32 val = clk_readl(c->reg + PLL_BASE); + + c->state = (val & PLL_BASE_ENABLE) ? ON : OFF; + + if (c->flags & PLL_FIXED && !(val & PLL_BASE_OVERRIDE)) { + pr_warning("Clock %s has unknown fixed frequency\n", c->name); + c->n = 1; + c->m = 0; + c->p = 1; + } else if (val & PLL_BASE_BYPASS) { + c->n = 1; + c->m = 1; + c->p = 1; + } else { + c->n = (val & PLL_BASE_DIVN_MASK) >> PLL_BASE_DIVN_SHIFT; + c->m = (val & PLL_BASE_DIVM_MASK) >> PLL_BASE_DIVM_SHIFT; + c->p = (val & PLL_BASE_DIVP_MASK) ? 2 : 1; + } + + val = clk_readl(c->reg + PLL_MISC(c)); + if (c->flags & PLL_HAS_CPCON) + c->cpcon = (val & PLL_MISC_CPCON_MASK) >> PLL_MISC_CPCON_SHIFT; + + tegra2_pll_clk_recalculate_rate(c); +} + +static int tegra2_pll_clk_enable(struct clk *c) +{ + u32 val; + pr_debug("%s on clock %s\n", __func__, c->name); + + val = clk_readl(c->reg + PLL_BASE); + val &= ~PLL_BASE_BYPASS; + val |= PLL_BASE_ENABLE; + clk_writel(val, c->reg + PLL_BASE); + + val = clk_readl(c->reg + PLL_MISC(c)); + val |= PLL_MISC_LOCK_ENABLE; + clk_writel(val, c->reg + PLL_MISC(c)); + + tegra2_pll_clk_wait_for_lock(c); + + return 0; +} + +static void tegra2_pll_clk_disable(struct clk *c) +{ + u32 val; + pr_debug("%s on clock %s\n", __func__, c->name); + + val = clk_readl(c->reg); + val &= ~(PLL_BASE_BYPASS | PLL_BASE_ENABLE); + clk_writel(val, c->reg); +} + +static int tegra2_pll_clk_set_rate(struct clk *c, unsigned long rate) +{ + u32 val; + unsigned long input_rate; + const struct clk_pll_table *sel; + + pr_debug("%s: %s %lu\n", __func__, c->name, rate); + BUG_ON(c->refcnt != 0); + + input_rate = c->parent->rate; + for (sel = c->pll_table; sel->input_rate != 0; sel++) { + if (sel->input_rate == input_rate && sel->output_rate == rate) { + c->n = sel->n; + c->m = sel->m; + c->p = sel->p; + c->cpcon = sel->cpcon; + + val = clk_readl(c->reg + PLL_BASE); + if (c->flags & PLL_FIXED) + val |= PLL_BASE_OVERRIDE; + val &= ~(PLL_BASE_DIVP_MASK | PLL_BASE_DIVN_MASK | + PLL_BASE_DIVM_MASK); + val |= (c->m << PLL_BASE_DIVM_SHIFT) | + (c->n << PLL_BASE_DIVN_SHIFT); + BUG_ON(c->p > 2); + if (c->p == 2) + val |= 1 << PLL_BASE_DIVP_SHIFT; + clk_writel(val, c->reg + PLL_BASE); + + if (c->flags & PLL_HAS_CPCON) { + val = c->cpcon << PLL_MISC_CPCON_SHIFT; + val |= PLL_MISC_LOCK_ENABLE; + clk_writel(val, c->reg + PLL_MISC(c)); + } + + if (c->state == ON) + tegra2_pll_clk_enable(c); + + c->rate = rate; + return 0; + } + } + return -EINVAL; +} + +static struct clk_ops tegra_pll_ops = { + .init = tegra2_pll_clk_init, + .enable = tegra2_pll_clk_enable, + .disable = tegra2_pll_clk_disable, + .set_rate = tegra2_pll_clk_set_rate, + .recalculate_rate = tegra2_pll_clk_recalculate_rate, +}; + +/* Clock divider ops */ +static void tegra2_pll_div_clk_init(struct clk *c) +{ + u32 val = clk_readl(c->reg); + u32 divu71; + val >>= c->reg_shift; + c->state = (val & PLL_OUT_CLKEN) ? ON : OFF; + if (!(val & PLL_OUT_RESET_DISABLE)) + c->state = OFF; + + if (c->flags & DIV_U71) { + divu71 = (val & PLL_OUT_RATIO_MASK) >> PLL_OUT_RATIO_SHIFT; + c->div = (divu71 + 2); + c->mul = 2; + } else if (c->flags & DIV_2) { + c->div = 2; + c->mul = 1; + } else { + c->div = 1; + c->mul = 1; + } + + tegra2_clk_recalculate_rate(c); +} + +static int tegra2_pll_div_clk_enable(struct clk *c) +{ + u32 val; + u32 new_val; + + pr_debug("%s: %s\n", __func__, c->name); + if (c->flags & DIV_U71) { + val = clk_readl(c->reg); + new_val = val >> c->reg_shift; + new_val &= 0xFFFF; + + new_val |= PLL_OUT_CLKEN | PLL_OUT_RESET_DISABLE; + + val &= ~(0xFFFF << c->reg_shift); + val |= new_val << c->reg_shift; + clk_writel(val, c->reg); + return 0; + } else if (c->flags & DIV_2) { + BUG_ON(!(c->flags & PLLD)); + val = clk_readl(c->reg); + val &= ~PLLD_MISC_DIV_RST; + clk_writel(val, c->reg); + return 0; + } + return -EINVAL; +} + +static void tegra2_pll_div_clk_disable(struct clk *c) +{ + u32 val; + u32 new_val; + + pr_debug("%s: %s\n", __func__, c->name); + if (c->flags & DIV_U71) { + val = clk_readl(c->reg); + new_val = val >> c->reg_shift; + new_val &= 0xFFFF; + + new_val &= ~(PLL_OUT_CLKEN | PLL_OUT_RESET_DISABLE); + + val &= ~(0xFFFF << c->reg_shift); + val |= new_val << c->reg_shift; + clk_writel(val, c->reg); + } else if (c->flags & DIV_2) { + BUG_ON(!(c->flags & PLLD)); + val = clk_readl(c->reg); + val |= PLLD_MISC_DIV_RST; + clk_writel(val, c->reg); + } +} + +static int tegra2_pll_div_clk_set_rate(struct clk *c, unsigned long rate) +{ + u32 val; + u32 new_val; + int divider_u71; + pr_debug("%s: %s %lu\n", __func__, c->name, rate); + if (c->flags & DIV_U71) { + divider_u71 = clk_div71_get_divider(c->parent, rate); + if (divider_u71 >= 0) { + val = clk_readl(c->reg); + new_val = val >> c->reg_shift; + new_val &= 0xFFFF; + if (c->flags & DIV_U71_FIXED) + new_val |= PLL_OUT_OVERRIDE; + new_val &= ~PLL_OUT_RATIO_MASK; + new_val |= divider_u71 << PLL_OUT_RATIO_SHIFT; + + val &= ~(0xFFFF << c->reg_shift); + val |= new_val << c->reg_shift; + clk_writel(val, c->reg); + c->div = divider_u71 + 2; + c->mul = 2; + tegra2_clk_recalculate_rate(c); + return 0; + } + } else if (c->flags & DIV_2) { + if (c->parent->rate == rate * 2) { + c->rate = rate; + return 0; + } + } + return -EINVAL; +} + + +static struct clk_ops tegra_pll_div_ops = { + .init = tegra2_pll_div_clk_init, + .enable = tegra2_pll_div_clk_enable, + .disable = tegra2_pll_div_clk_disable, + .set_rate = tegra2_pll_div_clk_set_rate, + .recalculate_rate = tegra2_clk_recalculate_rate, +}; + +/* Periph clk ops */ + +static void tegra2_periph_clk_init(struct clk *c) +{ + u32 val = clk_readl(c->reg); + const struct clk_mux_sel *mux = 0; + const struct clk_mux_sel *sel; + if (c->flags & MUX) { + for (sel = c->inputs; sel->input != NULL; sel++) { + if (val >> PERIPH_CLK_SOURCE_SHIFT == sel->value) + mux = sel; + } + BUG_ON(!mux); + + c->parent = mux->input; + } else { + c->parent = c->inputs[0].input; + } + + if (c->flags & DIV_U71) { + u32 divu71 = val & PERIPH_CLK_SOURCE_DIV_MASK; + c->div = divu71 + 2; + c->mul = 2; + } else { + c->div = 1; + c->mul = 1; + } + + c->state = ON; + if (!(clk_readl(CLK_OUT_ENB + PERIPH_CLK_TO_ENB_REG(c)) & + PERIPH_CLK_TO_ENB_BIT(c))) + c->state = OFF; + if (!(c->flags & PERIPH_NO_RESET)) + if (clk_readl(RST_DEVICES + PERIPH_CLK_TO_ENB_REG(c)) & + PERIPH_CLK_TO_ENB_BIT(c)) + c->state = OFF; + tegra2_clk_recalculate_rate(c); +} + +static int tegra2_periph_clk_enable(struct clk *c) +{ + u32 val; + pr_debug("%s on clock %s\n", __func__, c->name); + + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + CLK_OUT_ENB_SET + PERIPH_CLK_TO_ENB_SET_REG(c)); + if (!(c->flags & PERIPH_NO_RESET) && !(c->flags & PERIPH_MANUAL_RESET)) + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + RST_DEVICES_CLR + PERIPH_CLK_TO_ENB_SET_REG(c)); + if (c->flags & PERIPH_EMC_ENB) { + /* The EMC peripheral clock has 2 extra enable bits */ + /* FIXME: Do they need to be disabled? */ + val = clk_readl(c->reg); + val |= 0x3 << 24; + clk_writel(val, c->reg); + } + return 0; +} + +static void tegra2_periph_clk_disable(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + CLK_OUT_ENB_CLR + PERIPH_CLK_TO_ENB_SET_REG(c)); +} + +void tegra2_periph_reset_deassert(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + if (!(c->flags & PERIPH_NO_RESET)) + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + RST_DEVICES_CLR + PERIPH_CLK_TO_ENB_SET_REG(c)); +} + +void tegra2_periph_reset_assert(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + if (!(c->flags & PERIPH_NO_RESET)) + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + RST_DEVICES_SET + PERIPH_CLK_TO_ENB_SET_REG(c)); +} + + +static int tegra2_periph_clk_set_parent(struct clk *c, struct clk *p) +{ + u32 val; + const struct clk_mux_sel *sel; + pr_debug("%s: %s %s\n", __func__, c->name, p->name); + for (sel = c->inputs; sel->input != NULL; sel++) { + if (sel->input == p) { + clk_reparent(c, p); + val = clk_readl(c->reg); + val &= ~PERIPH_CLK_SOURCE_MASK; + val |= (sel->value) << PERIPH_CLK_SOURCE_SHIFT; + clk_writel(val, c->reg); + c->rate = c->parent->rate; + return 0; + } + } + + return -EINVAL; +} + +static int tegra2_periph_clk_set_rate(struct clk *c, unsigned long rate) +{ + u32 val; + int divider_u71; + pr_debug("%s: %lu\n", __func__, rate); + if (c->flags & DIV_U71) { + divider_u71 = clk_div71_get_divider(c->parent, rate); + if (divider_u71 >= 0) { + val = clk_readl(c->reg); + val &= ~PERIPH_CLK_SOURCE_DIV_MASK; + val |= divider_u71; + clk_writel(val, c->reg); + c->div = divider_u71 + 2; + c->mul = 2; + tegra2_clk_recalculate_rate(c); + return 0; + } + } + return -EINVAL; +} + +static struct clk_ops tegra_periph_clk_ops = { + .init = &tegra2_periph_clk_init, + .enable = &tegra2_periph_clk_enable, + .disable = &tegra2_periph_clk_disable, + .set_parent = &tegra2_periph_clk_set_parent, + .set_rate = &tegra2_periph_clk_set_rate, + .recalculate_rate = &tegra2_clk_recalculate_rate, +}; + +/* Clock doubler ops */ +static void tegra2_clk_double_init(struct clk *c) +{ + c->mul = 2; + c->div = 1; + c->state = ON; + if (!(clk_readl(CLK_OUT_ENB + PERIPH_CLK_TO_ENB_REG(c)) & + PERIPH_CLK_TO_ENB_BIT(c))) + c->state = OFF; + tegra2_clk_recalculate_rate(c); +}; + +static struct clk_ops tegra_clk_double_ops = { + .init = &tegra2_clk_double_init, + .enable = &tegra2_periph_clk_enable, + .disable = &tegra2_periph_clk_disable, + .recalculate_rate = &tegra2_clk_recalculate_rate, +}; + +/* Clock definitions */ +static struct clk tegra_clk_32k = { + .name = "clk_32k", + .rate = 32678, + .ops = NULL, +}; + +static struct clk_pll_table tegra_pll_s_table[] = { + {32768, 12000000, 366, 1, 1, 0}, + {32768, 13000000, 397, 1, 1, 0}, + {32768, 19200000, 586, 1, 1, 0}, + {32768, 26000000, 793, 1, 1, 0}, + {0, 0, 0, 0, 0, 0}, +}; + +static struct clk tegra_pll_s = { + .name = "pll_s", + .flags = PLL_ALT_MISC_REG, + .ops = &tegra_pll_ops, + .reg = 0xf0, + .input_min = 32768, + .input_max = 32768, + .parent = &tegra_clk_32k, + .cf_min = 0, /* FIXME */ + .cf_max = 0, /* FIXME */ + .vco_min = 12000000, + .vco_max = 26000000, + .pll_table = tegra_pll_s_table, +}; + +static struct clk_mux_sel tegra_clk_m_sel[] = { + { .input = &tegra_clk_32k, .value = 0}, + { .input = &tegra_pll_s, .value = 1}, + { 0, 0}, +}; +static struct clk tegra_clk_m = { + .name = "clk_m", + .flags = ENABLE_ON_INIT, + .ops = &tegra_clk_m_ops, + .inputs = tegra_clk_m_sel, + .reg = 0x1fc, + .reg_mask = (1<<28), + .reg_shift = 28, +}; + +static struct clk_pll_table tegra_pll_c_table[] = { + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_c = { + .name = "pll_c", + .flags = PLL_HAS_CPCON, + .ops = &tegra_pll_ops, + .reg = 0x80, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1400000000, + .pll_table = tegra_pll_c_table, +}; + +static struct clk tegra_pll_c_out1 = { + .name = "pll_c_out1", + .ops = &tegra_pll_div_ops, + .flags = DIV_U71, + .parent = &tegra_pll_c, + .reg = 0x84, + .reg_shift = 0, +}; + +static struct clk_pll_table tegra_pll_m_table[] = { + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_m = { + .name = "pll_m", + .flags = PLL_HAS_CPCON, + .ops = &tegra_pll_ops, + .reg = 0x90, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1200000000, + .pll_table = tegra_pll_m_table, +}; + +static struct clk tegra_pll_m_out1 = { + .name = "pll_m_out1", + .ops = &tegra_pll_div_ops, + .flags = DIV_U71, + .parent = &tegra_pll_m, + .reg = 0x94, + .reg_shift = 0, +}; + +static struct clk_pll_table tegra_pll_p_table[] = { + { 12000000, 216000000, 432, 12, 2, 8}, + { 13000000, 216000000, 432, 13, 2, 8}, + { 19200000, 216000000, 90, 4, 2, 1}, + { 26000000, 216000000, 432, 26, 2, 8}, + { 12000000, 432000000, 432, 12, 1, 8}, + { 13000000, 432000000, 432, 13, 1, 8}, + { 19200000, 432000000, 90, 4, 1, 1}, + { 26000000, 432000000, 432, 26, 1, 8}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_p = { + .name = "pll_p", + .flags = ENABLE_ON_INIT | PLL_FIXED | PLL_HAS_CPCON, + .ops = &tegra_pll_ops, + .reg = 0xa0, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1400000000, + .pll_table = tegra_pll_p_table, +}; + +static struct clk tegra_pll_p_out1 = { + .name = "pll_p_out1", + .ops = &tegra_pll_div_ops, + .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED, + .parent = &tegra_pll_p, + .reg = 0xa4, + .reg_shift = 0, +}; + +static struct clk tegra_pll_p_out2 = { + .name = "pll_p_out2", + .ops = &tegra_pll_div_ops, + .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED, + .parent = &tegra_pll_p, + .reg = 0xa4, + .reg_shift = 16, +}; + +static struct clk tegra_pll_p_out3 = { + .name = "pll_p_out3", + .ops = &tegra_pll_div_ops, + .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED, + .parent = &tegra_pll_p, + .reg = 0xa8, + .reg_shift = 0, +}; + +static struct clk tegra_pll_p_out4 = { + .name = "pll_p_out4", + .ops = &tegra_pll_div_ops, + .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED, + .parent = &tegra_pll_p, + .reg = 0xa8, + .reg_shift = 16, +}; + +static struct clk_pll_table tegra_pll_a_table[] = { + { 28800000, 56448000, 49, 25, 1, 1}, + { 28800000, 73728000, 64, 25, 1, 1}, + { 28800000, 11289600, 49, 25, 1, 1}, + { 28800000, 12288000, 64, 25, 1, 1}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_a = { + .name = "pll_a", + .flags = PLL_HAS_CPCON, + .ops = &tegra_pll_ops, + .reg = 0xb0, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_pll_p_out1, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1400000000, + .pll_table = tegra_pll_a_table, +}; + +static struct clk tegra_pll_a_out0 = { + .name = "pll_a_out0", + .ops = &tegra_pll_div_ops, + .flags = DIV_U71, + .parent = &tegra_pll_a, + .reg = 0xb4, + .reg_shift = 0, +}; + +static struct clk_pll_table tegra_pll_d_table[] = { + { 12000000, 1000000000, 1000, 12, 1, 12}, + { 13000000, 1000000000, 1000, 13, 1, 12}, + { 19200000, 1000000000, 625, 12, 1, 8}, + { 26000000, 1000000000, 1000, 26, 1, 12}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_d = { + .name = "pll_d", + .flags = PLL_HAS_CPCON | PLLD, + .ops = &tegra_pll_ops, + .reg = 0xd0, + .input_min = 2000000, + .input_max = 40000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 40000000, + .vco_max = 1000000000, + .pll_table = tegra_pll_d_table, +}; + +static struct clk tegra_pll_d_out0 = { + .name = "pll_d_out0", + .ops = &tegra_pll_div_ops, + .flags = DIV_2 | PLLD, + .parent = &tegra_pll_d, +}; + +static struct clk_pll_table tegra_pll_u_table[] = { + { 12000000, 480000000, 960, 12, 1, 0}, + { 13000000, 480000000, 960, 13, 1, 0}, + { 19200000, 480000000, 200, 4, 1, 0}, + { 26000000, 480000000, 960, 26, 1, 0}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_u = { + .name = "pll_u", + .flags = 0, + .ops = &tegra_pll_ops, + .reg = 0xc0, + .input_min = 2000000, + .input_max = 40000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 480000000, + .vco_max = 960000000, + .pll_table = tegra_pll_u_table, +}; + +static struct clk_pll_table tegra_pll_x_table[] = { + { 12000000, 1000000000, 1000, 12, 1, 12}, + { 13000000, 1000000000, 1000, 13, 1, 12}, + { 19200000, 1000000000, 625, 12, 1, 8}, + { 26000000, 1000000000, 1000, 26, 1, 12}, + { 12000000, 750000000, 750, 12, 1, 12}, + { 13000000, 750000000, 750, 13, 1, 12}, + { 19200000, 750000000, 625, 16, 1, 8}, + { 26000000, 750000000, 750, 26, 1, 12}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_x = { + .name = "pll_x", + .flags = PLL_HAS_CPCON | PLL_ALT_MISC_REG, + .ops = &tegra_pll_ops, + .reg = 0xe0, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1200000000, + .pll_table = tegra_pll_x_table, +}; + +static struct clk tegra_clk_d = { + .name = "clk_d", + .flags = PERIPH_NO_RESET, + .ops = &tegra_clk_double_ops, + .clk_num = 90, + .reg = 0x34, + .reg_shift = 12, + .parent = &tegra_clk_m, +}; + +/* FIXME: need tegra_audio +static struct clk tegra_clk_audio_2x = { + .name = "clk_d", + .flags = PERIPH_NO_RESET, + .ops = &tegra_clk_double_ops, + .clk_num = 89, + .reg = 0x34, + .reg_shift = 8, + .parent = &tegra_audio, +} +*/ + +static struct clk_mux_sel mux_cclk[] = { + { .input = &tegra_clk_m, .value = 0}, + { .input = &tegra_pll_c, .value = 1}, + { .input = &tegra_clk_32k, .value = 2}, + { .input = &tegra_pll_m, .value = 3}, + { .input = &tegra_pll_p, .value = 4}, + { .input = &tegra_pll_p_out4, .value = 5}, + { .input = &tegra_pll_p_out3, .value = 6}, + { .input = &tegra_clk_d, .value = 7}, + { .input = &tegra_pll_x, .value = 8}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_sclk[] = { + { .input = &tegra_clk_m, .value = 0}, + { .input = &tegra_pll_c_out1, .value = 1}, + { .input = &tegra_pll_p_out4, .value = 2}, + { .input = &tegra_pll_p_out3, .value = 3}, + { .input = &tegra_pll_p_out2, .value = 4}, + { .input = &tegra_clk_d, .value = 5}, + { .input = &tegra_clk_32k, .value = 6}, + { .input = &tegra_pll_m_out1, .value = 7}, + { 0, 0}, +}; + +static struct clk tegra_clk_cpu = { + .name = "cpu", + .inputs = mux_cclk, + .reg = 0x20, + .ops = &tegra_super_ops, +}; + +static struct clk tegra_clk_sys = { + .name = "sys", + .inputs = mux_sclk, + .reg = 0x28, + .ops = &tegra_super_ops, +}; + +static struct clk tegra_clk_hclk = { + .name = "hclk", + .flags = DIV_BUS, + .parent = &tegra_clk_sys, + .reg = 0x30, + .reg_shift = 4, + .ops = &tegra_bus_ops, +}; + +static struct clk tegra_clk_pclk = { + .name = "pclk", + .flags = DIV_BUS, + .parent = &tegra_clk_hclk, + .reg = 0x30, + .reg_shift = 0, + .ops = &tegra_bus_ops, +}; + +static struct clk_mux_sel mux_pllm_pllc_pllp_plla[] = { + { .input = &tegra_pll_m, .value = 0}, + { .input = &tegra_pll_c, .value = 1}, + { .input = &tegra_pll_p, .value = 2}, + { .input = &tegra_pll_a_out0, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllm_pllc_pllp_clkm[] = { + { .input = &tegra_pll_m, .value = 0}, + { .input = &tegra_pll_c, .value = 1}, + { .input = &tegra_pll_p, .value = 2}, + { .input = &tegra_clk_m, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_pllc_pllm_clkm[] = { + { .input = &tegra_pll_p, .value = 0}, + { .input = &tegra_pll_c, .value = 1}, + { .input = &tegra_pll_m, .value = 2}, + { .input = &tegra_clk_m, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_plla_audio_pllp_clkm[] = { + {.input = &tegra_pll_a, .value = 0}, + /* FIXME: no mux defined for tegra_audio + {.input = &tegra_audio, .value = 1},*/ + {.input = &tegra_pll_p, .value = 2}, + {.input = &tegra_clk_m, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_plld_pllc_clkm[] = { + {.input = &tegra_pll_p, .value = 0}, + {.input = &tegra_pll_d_out0, .value = 1}, + {.input = &tegra_pll_c, .value = 2}, + {.input = &tegra_clk_m, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_pllc_audio_clkm_clk32[] = { + {.input = &tegra_pll_p, .value = 0}, + {.input = &tegra_pll_c, .value = 1}, + /* FIXME: no mux defined for tegra_audio + {.input = &tegra_audio, .value = 2},*/ + {.input = &tegra_clk_m, .value = 3}, + {.input = &tegra_clk_32k, .value = 4}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_pllc_pllm[] = { + {.input = &tegra_pll_p, .value = 0}, + {.input = &tegra_pll_c, .value = 1}, + {.input = &tegra_pll_m, .value = 2}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_clk_m[] = { + { .input = &tegra_clk_m, .value = 0}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_out3[] = { + { .input = &tegra_pll_p_out3, .value = 0}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_plld[] = { + { .input = &tegra_pll_d, .value = 0}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_clk_32k[] = { + { .input = &tegra_clk_32k, .value = 0}, + { 0, 0}, +}; + +#define PERIPH_CLK(_name, _dev, _con, _clk_num, _reg, _inputs, _flags) \ + { \ + .name = _name, \ + .lookup = { \ + .dev_id = _dev, \ + .con_id = _con, \ + }, \ + .ops = &tegra_periph_clk_ops, \ + .clk_num = _clk_num, \ + .reg = _reg, \ + .inputs = _inputs, \ + .flags = _flags, \ + } + +struct clk tegra_periph_clks[] = { + PERIPH_CLK("rtc", "rtc-tegra", NULL, 4, 0, mux_clk_32k, PERIPH_NO_RESET), + PERIPH_CLK("timer", "timer", NULL, 5, 0, mux_clk_m, 0), + PERIPH_CLK("i2s1", "i2s.0", NULL, 11, 0x100, mux_plla_audio_pllp_clkm, MUX | DIV_U71), + PERIPH_CLK("i2s2", "i2s.1", NULL, 18, 0x104, mux_plla_audio_pllp_clkm, MUX | DIV_U71), + /* FIXME: spdif has 2 clocks but 1 enable */ + PERIPH_CLK("spdif_out", "spdif_out", NULL, 10, 0x108, mux_plla_audio_pllp_clkm, MUX | DIV_U71), + PERIPH_CLK("spdif_in", "spdif_in", NULL, 10, 0x10c, mux_pllp_pllc_pllm, MUX | DIV_U71), + PERIPH_CLK("pwm", "pwm", NULL, 17, 0x110, mux_pllp_pllc_audio_clkm_clk32, MUX | DIV_U71), + PERIPH_CLK("spi", "spi", NULL, 43, 0x114, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("xio", "xio", NULL, 45, 0x120, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("twc", "twc", NULL, 16, 0x12c, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sbc1", "spi_tegra.0", NULL, 41, 0x134, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sbc2", "spi_tegra.1", NULL, 44, 0x118, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sbc3", "spi_tegra.2", NULL, 46, 0x11c, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sbc4", "spi_tegra.3", NULL, 68, 0x1b4, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("ide", "ide", NULL, 25, 0x144, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("ndflash", "tegra_nand", NULL, 13, 0x160, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + /* FIXME: vfir shares an enable with uartb */ + PERIPH_CLK("vfir", "vfir", NULL, 7, 0x168, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sdmmc1", "sdhci-tegra.0", NULL, 14, 0x150, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sdmmc2", "sdhci-tegra.1", NULL, 9, 0x154, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sdmmc3", "sdhci-tegra.2", NULL, 69, 0x1bc, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sdmmc4", "sdhci-tegra.3", NULL, 15, 0x160, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("vde", "vde", NULL, 61, 0x1c8, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("csite", "csite", NULL, 73, 0x1d4, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + /* FIXME: what is la? */ + PERIPH_CLK("la", "la", NULL, 76, 0x1f8, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("owr", "owr", NULL, 71, 0x1cc, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("nor", "nor", NULL, 42, 0x1d0, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("mipi", "mipi", NULL, 50, 0x174, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("i2c1", "tegra-i2c.0", NULL, 12, 0x124, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("i2c2", "tegra-i2c.1", NULL, 54, 0x198, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("i2c3", "tegra-i2c.2", NULL, 67, 0x1b8, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("dvc", "tegra-i2c.3", NULL, 47, 0x128, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("i2c1_i2c", "tegra-i2c.0", "i2c", 0, 0, mux_pllp_out3, 0), + PERIPH_CLK("i2c2_i2c", "tegra-i2c.1", "i2c", 0, 0, mux_pllp_out3, 0), + PERIPH_CLK("i2c3_i2c", "tegra-i2c.2", "i2c", 0, 0, mux_pllp_out3, 0), + PERIPH_CLK("dvc_i2c", "tegra-i2c.3", "i2c", 0, 0, mux_pllp_out3, 0), + PERIPH_CLK("uarta", "uart.0", NULL, 6, 0x178, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("uartb", "uart.1", NULL, 7, 0x17c, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("uartc", "uart.2", NULL, 55, 0x1a0, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("uartd", "uart.3", NULL, 65, 0x1c0, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("uarte", "uart.4", NULL, 66, 0x1c4, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("3d", "3d", NULL, 24, 0x158, mux_pllm_pllc_pllp_plla, MUX | DIV_U71 | PERIPH_MANUAL_RESET), + PERIPH_CLK("2d", "2d", NULL, 21, 0x15c, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), + /* FIXME: vi and vi_sensor share an enable */ + PERIPH_CLK("vi", "vi", NULL, 20, 0x148, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), + PERIPH_CLK("vi_sensor", "vi_sensor", NULL, 20, 0x1a8, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), + PERIPH_CLK("epp", "epp", NULL, 19, 0x16c, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), + PERIPH_CLK("mpe", "mpe", NULL, 60, 0x170, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), + PERIPH_CLK("host1x", "host1x", NULL, 28, 0x180, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), + /* FIXME: cve and tvo share an enable */ + PERIPH_CLK("cve", "cve", NULL, 49, 0x140, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), + PERIPH_CLK("tvo", "tvo", NULL, 49, 0x188, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), + PERIPH_CLK("hdmi", "hdmi", NULL, 51, 0x18c, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), + PERIPH_CLK("tvdac", "tvdac", NULL, 53, 0x194, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), + PERIPH_CLK("disp1", "tegrafb.0", NULL, 27, 0x138, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), + PERIPH_CLK("disp2", "tegrafb.1", NULL, 26, 0x13c, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), + PERIPH_CLK("usbd", "fsl-tegra-udc", NULL, 22, 0, mux_clk_m, 0), + PERIPH_CLK("usb2", "usb.1", NULL, 58, 0, mux_clk_m, 0), + PERIPH_CLK("usb3", "usb.2", NULL, 59, 0, mux_clk_m, 0), + PERIPH_CLK("emc", "emc", NULL, 57, 0x19c, mux_pllm_pllc_pllp_clkm, MUX | DIV_U71 | PERIPH_EMC_ENB), + PERIPH_CLK("dsi", "dsi", NULL, 48, 0, mux_plld, 0), +}; + +#define CLK_DUPLICATE(_name, _dev, _con) \ + { \ + .name = _name, \ + .lookup = { \ + .dev_id = _dev, \ + .con_id = _con, \ + }, \ + } + +/* Some clocks may be used by different drivers depending on the board + * configuration. List those here to register them twice in the clock lookup + * table under two names. + */ +struct clk_duplicate tegra_clk_duplicates[] = { + CLK_DUPLICATE("uarta", "tegra_uart.0", NULL), + CLK_DUPLICATE("uartb", "tegra_uart.1", NULL), + CLK_DUPLICATE("uartc", "tegra_uart.2", NULL), + CLK_DUPLICATE("uartd", "tegra_uart.3", NULL), + CLK_DUPLICATE("uarte", "tegra_uart.4", NULL), +}; + +#define CLK(dev, con, ck) \ + { \ + .dev_id = dev, \ + .con_id = con, \ + .clk = ck, \ + } + +struct clk_lookup tegra_clk_lookups[] = { + /* external root sources */ + CLK(NULL, "32k_clk", &tegra_clk_32k), + CLK(NULL, "pll_s", &tegra_pll_s), + CLK(NULL, "clk_m", &tegra_clk_m), + CLK(NULL, "pll_m", &tegra_pll_m), + CLK(NULL, "pll_m_out1", &tegra_pll_m_out1), + CLK(NULL, "pll_c", &tegra_pll_c), + CLK(NULL, "pll_c_out1", &tegra_pll_c_out1), + CLK(NULL, "pll_p", &tegra_pll_p), + CLK(NULL, "pll_p_out1", &tegra_pll_p_out1), + CLK(NULL, "pll_p_out2", &tegra_pll_p_out2), + CLK(NULL, "pll_p_out3", &tegra_pll_p_out3), + CLK(NULL, "pll_p_out4", &tegra_pll_p_out4), + CLK(NULL, "pll_a", &tegra_pll_a), + CLK(NULL, "pll_a_out0", &tegra_pll_a_out0), + CLK(NULL, "pll_d", &tegra_pll_d), + CLK(NULL, "pll_d_out0", &tegra_pll_d_out0), + CLK(NULL, "pll_u", &tegra_pll_u), + CLK(NULL, "pll_x", &tegra_pll_x), + CLK(NULL, "cpu", &tegra_clk_cpu), + CLK(NULL, "sys", &tegra_clk_sys), + CLK(NULL, "hclk", &tegra_clk_hclk), + CLK(NULL, "pclk", &tegra_clk_pclk), + CLK(NULL, "clk_d", &tegra_clk_d), +}; + +void __init tegra2_init_clocks(void) +{ + int i; + struct clk_lookup *cl; + struct clk *c; + struct clk_duplicate *cd; + + for (i = 0; i < ARRAY_SIZE(tegra_clk_lookups); i++) { + cl = &tegra_clk_lookups[i]; + clk_init(cl->clk); + clkdev_add(cl); + } + + for (i = 0; i < ARRAY_SIZE(tegra_periph_clks); i++) { + c = &tegra_periph_clks[i]; + cl = &c->lookup; + cl->clk = c; + + clk_init(cl->clk); + clkdev_add(cl); + } + + for (i = 0; i < ARRAY_SIZE(tegra_clk_duplicates); i++) { + cd = &tegra_clk_duplicates[i]; + c = tegra_get_clock_by_name(cd->name); + if (c) { + cl = &cd->lookup; + cl->clk = c; + clkdev_add(cl); + } else { + pr_err("%s: Unknown duplicate clock %s\n", __func__, + cd->name); + } + } +} -- cgit v1.2.3