diff options
Diffstat (limited to 'arch/arm/mach-tegra/clock.c')
| -rw-r--r-- | arch/arm/mach-tegra/clock.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c index 24047b8c82..5d968d8d33 100644 --- a/arch/arm/mach-tegra/clock.c +++ b/arch/arm/mach-tegra/clock.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010-2014, NVIDIA CORPORATION. All rights reserved. + * Copyright (c) 2010-2015, 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, @@ -113,7 +113,11 @@ int clock_ll_read_pll(enum clock_id clkid, u32 *divm, u32 *divn, data = readl(&pll->pll_misc); *cpcon = (data & PLL_CPCON_MASK) >> PLL_CPCON_SHIFT; *lfcon = (data & PLL_LFCON_MASK) >> PLL_LFCON_SHIFT; - +#if defined(CONFIG_TEGRA210) + /* T210 PLLU uses KCP/KVCO instead of CPCON/LFCON */ + *cpcon = (data & PLLU_KCP_MASK) >> PLLU_KCP_SHIFT; + *lfcon = (data & PLLU_KVCO_MASK) >> PLLU_KVCO_SHIFT; +#endif return 0; } @@ -132,14 +136,28 @@ unsigned long clock_start_pll(enum clock_id clkid, u32 divm, u32 divn, * - same fields are always mapped at same offsets, except DCCON * - DCCON is always 0, doesn't conflict * - M,N, P of PLLP values are ignored for PLLP + * NOTE: Above is no longer true with T210 - TBD: FIX THIS */ misc_data = (cpcon << PLL_CPCON_SHIFT) | (lfcon << PLL_LFCON_SHIFT); +#if defined(CONFIG_TEGRA210) + /* T210 PLLU uses KCP/KVCO instead of cpcon/lfcon */ + if (clkid == CLOCK_ID_USB) { + /* preserve EN_LOCKDET, set by default */ + misc_data = readl(&pll->pll_misc); + misc_data |= (cpcon << PLLU_KCP_SHIFT) | + (lfcon << PLLU_KVCO_SHIFT); + } +#endif data = (divm << PLL_DIVM_SHIFT) | (divn << PLL_DIVN_SHIFT) | (0 << PLL_BYPASS_SHIFT) | (1 << PLL_ENABLE_SHIFT); if (clkid == CLOCK_ID_USB) +#if defined(CONFIG_TEGRA210) + data |= divp << PLLU_DIVP_SHIFT; +#else data |= divp << PLLU_VCO_FREQ_SHIFT; +#endif else data |= divp << PLL_DIVP_SHIFT; if (pll) { @@ -534,8 +552,15 @@ int clock_set_rate(enum clock_id clkid, u32 n, u32 m, u32 p, u32 cpcon) /* Set cpcon to PLL_MISC */ misc_reg = readl(&pll->pll_misc); +#if !defined(CONFIG_TEGRA210) misc_reg &= ~PLL_CPCON_MASK; misc_reg |= cpcon << PLL_CPCON_SHIFT; +#else + /* T210 uses KCP instead, use the most common bit shift (PLLA/U/D2) */ + misc_reg &= ~PLLU_KCP_MASK; + misc_reg |= cpcon << PLLU_KCP_SHIFT; +#endif + writel(misc_reg, &pll->pll_misc); /* Enable PLL */ @@ -608,12 +633,6 @@ void clock_init(void) debug("PLLC = %d\n", pll_rate[CLOCK_ID_CGENERAL]); debug("PLLD = %d\n", pll_rate[CLOCK_ID_DISPLAY]); debug("PLLX = %d\n", pll_rate[CLOCK_ID_XCPU]); - - /* Do any special system timer/TSC setup */ -#if defined(CONFIG_TEGRA_SUPPORT_NON_SECURE) - if (!tegra_cpu_is_non_secure()) -#endif - arch_timer_init(); } static void set_avp_clock_source(u32 src) @@ -634,6 +653,7 @@ static void set_avp_clock_source(u32 src) /* * This function is useful on Tegra30, and any later SoCs that have compatible * PLLP configuration registers. + * NOTE: Not used on Tegra210 - see tegra210_setup_pllp in T210 clock.c */ void tegra30_set_up_pllp(void) { |
