diff options
Diffstat (limited to 'arch/arm/cpu/arm720t/tegra-common/cpu.c')
| -rw-r--r-- | arch/arm/cpu/arm720t/tegra-common/cpu.c | 75 |
1 files changed, 40 insertions, 35 deletions
diff --git a/arch/arm/cpu/arm720t/tegra-common/cpu.c b/arch/arm/cpu/arm720t/tegra-common/cpu.c index 72c69b914c..2c5cd63917 100644 --- a/arch/arm/cpu/arm720t/tegra-common/cpu.c +++ b/arch/arm/cpu/arm720t/tegra-common/cpu.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved. + * Copyright (c) 2010-2014, NVIDIA CORPORATION. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -112,24 +112,38 @@ struct clk_pll_table tegra_pll_x_table[TEGRA_SOC_CNT][CLOCK_OSC_FREQ_COUNT] = { { .n = 116, .m = 1, .p = 1 }, /* OSC: 12.0 MHz */ { .n = 108, .m = 2, .p = 1 }, /* OSC: 26.0 MHz */ }, + + /* + * T124: 700 MHz + * + * Register Field Bits Width + * ------------------------------ + * PLLX_BASE p 23:20 4 + * PLLX_BASE n 15: 8 8 + * PLLX_BASE m 7: 0 8 + */ + { + { .n = 108, .m = 1, .p = 1 }, /* OSC: 13.0 MHz */ + { .n = 73, .m = 1, .p = 1 }, /* OSC: 19.2 MHz */ + { .n = 116, .m = 1, .p = 1 }, /* OSC: 12.0 MHz */ + { .n = 108, .m = 2, .p = 1 }, /* OSC: 26.0 MHz */ + }, }; -void adjust_pllp_out_freqs(void) +static inline void pllx_set_iddq(void) { +#if defined(CONFIG_TEGRA124) struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE; - struct clk_pll *pll = &clkrst->crc_pll[CLOCK_ID_PERIPH]; u32 reg; - /* Set T30 PLLP_OUT1, 2, 3 & 4 freqs to 9.6, 48, 102 & 204MHz */ - reg = readl(&pll->pll_out[0]); /* OUTA, contains OUT2 / OUT1 */ - reg |= (IN_408_OUT_48_DIVISOR << PLLP_OUT2_RATIO) | PLLP_OUT2_OVR - | (IN_408_OUT_9_6_DIVISOR << PLLP_OUT1_RATIO) | PLLP_OUT1_OVR; - writel(reg, &pll->pll_out[0]); - - reg = readl(&pll->pll_out[1]); /* OUTB, contains OUT4 / OUT3 */ - reg |= (IN_408_OUT_204_DIVISOR << PLLP_OUT4_RATIO) | PLLP_OUT4_OVR - | (IN_408_OUT_102_DIVISOR << PLLP_OUT3_RATIO) | PLLP_OUT3_OVR; - writel(reg, &pll->pll_out[1]); + /* Disable IDDQ */ + reg = readl(&clkrst->crc_pllx_misc3); + reg &= ~PLLX_IDDQ_MASK; + writel(reg, &clkrst->crc_pllx_misc3); + udelay(2); + debug("%s: IDDQ: PLLX IDDQ = 0x%08X\n", __func__, + readl(&clkrst->crc_pllx_misc3)); +#endif } int pllx_set_rate(struct clk_pll_simple *pll , u32 divn, u32 divm, @@ -146,6 +160,8 @@ int pllx_set_rate(struct clk_pll_simple *pll , u32 divn, u32 divm, debug(" pllx_set_rate entry\n"); + pllx_set_iddq(); + /* Set BYPASS, m, n and p to PLLX_BASE */ reg = PLL_BYPASS_MASK | (divm << PLL_DIVM_SHIFT); reg |= ((divn << PLL_DIVN_SHIFT) | (divp << PLL_DIVP_SHIFT)); @@ -162,18 +178,23 @@ int pllx_set_rate(struct clk_pll_simple *pll , u32 divn, u32 divm, reg |= (1 << PLL_DCCON_SHIFT); writel(reg, &pll->pll_misc); - /* Enable PLLX */ - reg = readl(&pll->pll_base); - reg |= PLL_ENABLE_MASK; - /* Disable BYPASS */ + reg = readl(&pll->pll_base); reg &= ~PLL_BYPASS_MASK; writel(reg, &pll->pll_base); + debug("pllx_set_rate: base = 0x%08X\n", reg); /* Set lock_enable to PLLX_MISC */ reg = readl(&pll->pll_misc); reg |= PLL_LOCK_ENABLE_MASK; writel(reg, &pll->pll_misc); + debug("pllx_set_rate: misc = 0x%08X\n", reg); + + /* Enable PLLX last, once it's all configured */ + reg = readl(&pll->pll_base); + reg |= PLL_ENABLE_MASK; + writel(reg, &pll->pll_base); + debug("pllx_set_rate: base final = 0x%08X\n", reg); return 0; } @@ -207,12 +228,6 @@ void init_pllx(void) /* set pllx */ sel = &tegra_pll_x_table[chip_sku][osc]; pllx_set_rate(pll, sel->n, sel->m, sel->p, sel->cpcon); - - /* adjust PLLP_out1-4 on T3x/T114 */ - if (soc_type >= CHIPID_TEGRA30) { - debug(" init_pllx: adjusting PLLP out freqs\n"); - adjust_pllp_out_freqs(); - } } void enable_cpu_clock(int enable) @@ -334,7 +349,6 @@ void reset_A9_cpu(int reset) void clock_enable_coresight(int enable) { u32 rst, src = 2; - int soc_type; debug("clock_enable_coresight entry\n"); clock_set_enable(PERIPH_ID_CORESIGHT, enable); @@ -343,20 +357,11 @@ void clock_enable_coresight(int enable) if (enable) { /* * Put CoreSight on PLLP_OUT0 and divide it down as per - * PLLP base frequency based on SoC type (T20/T30/T114). + * PLLP base frequency based on SoC type (T20/T30+). * Clock divider request would setup CSITE clock as 144MHz * for PLLP base 216MHz and 204MHz for PLLP base 408MHz */ - - soc_type = tegra_get_chip(); - if (soc_type == CHIPID_TEGRA30 || soc_type == CHIPID_TEGRA114) - src = CLK_DIVIDER(NVBL_PLLP_KHZ, 204000); - else if (soc_type == CHIPID_TEGRA20) - src = CLK_DIVIDER(NVBL_PLLP_KHZ, 144000); - else - printf("%s: Unknown SoC type %X!\n", - __func__, soc_type); - + src = CLK_DIVIDER(NVBL_PLLP_KHZ, CSITE_KHZ); clock_ll_set_source_divisor(PERIPH_ID_CSI, 0, src); /* Unlock the CPU CoreSight interfaces */ |