diff options
Diffstat (limited to 'arch/arm/mach-omap2/clock.c')
| -rw-r--r-- | arch/arm/mach-omap2/clock.c | 76 |
1 files changed, 69 insertions, 7 deletions
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c index 591581a6653..5a0cac93d9e 100644 --- a/arch/arm/mach-omap2/clock.c +++ b/arch/arm/mach-omap2/clock.c @@ -47,6 +47,24 @@ u16 cpu_mask; /* + * Clock features setup. Used instead of CPU type checks. + */ +struct ti_clk_features ti_clk_features; + +/* DPLL valid Fint frequency band limits - from 34xx TRM Section 4.7.6.2 */ +#define OMAP3430_DPLL_FINT_BAND1_MIN 750000 +#define OMAP3430_DPLL_FINT_BAND1_MAX 2100000 +#define OMAP3430_DPLL_FINT_BAND2_MIN 7500000 +#define OMAP3430_DPLL_FINT_BAND2_MAX 21000000 + +/* + * DPLL valid Fint frequency range for OMAP36xx and OMAP4xxx. + * From device data manual section 4.3 "DPLL and DLL Specifications". + */ +#define OMAP3PLUS_DPLL_FINT_MIN 32000 +#define OMAP3PLUS_DPLL_FINT_MAX 52000000 + +/* * clkdm_control: if true, then when a clock is enabled in the * hardware, its clockdomain will first be enabled; and when a clock * is disabled in the hardware, its clockdomain will be disabled @@ -287,13 +305,7 @@ void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk, * 34xx reverses this, just to keep us on our toes * AM35xx uses both, depending on the module. */ - if (cpu_is_omap24xx()) - *idlest_val = OMAP24XX_CM_IDLEST_VAL; - else if (cpu_is_omap34xx()) - *idlest_val = OMAP34XX_CM_IDLEST_VAL; - else - BUG(); - + *idlest_val = ti_clk_features.cm_idlest_val; } /** @@ -731,3 +743,53 @@ void __init omap2_clk_print_new_rates(const char *hfclkin_ck_name, (clk_get_rate(core_ck) / 1000000), (clk_get_rate(mpu_ck) / 1000000)); } + +/** + * ti_clk_init_features - init clock features struct for the SoC + * + * Initializes the clock features struct based on the SoC type. + */ +void __init ti_clk_init_features(void) +{ + /* Fint setup for DPLLs */ + if (cpu_is_omap3430()) { + ti_clk_features.fint_min = OMAP3430_DPLL_FINT_BAND1_MIN; + ti_clk_features.fint_max = OMAP3430_DPLL_FINT_BAND2_MAX; + ti_clk_features.fint_band1_max = OMAP3430_DPLL_FINT_BAND1_MAX; + ti_clk_features.fint_band2_min = OMAP3430_DPLL_FINT_BAND2_MIN; + } else { + ti_clk_features.fint_min = OMAP3PLUS_DPLL_FINT_MIN; + ti_clk_features.fint_max = OMAP3PLUS_DPLL_FINT_MAX; + } + + /* Bypass value setup for DPLLs */ + if (cpu_is_omap24xx()) { + ti_clk_features.dpll_bypass_vals |= + (1 << OMAP2XXX_EN_DPLL_LPBYPASS) | + (1 << OMAP2XXX_EN_DPLL_FRBYPASS); + } else if (cpu_is_omap34xx()) { + ti_clk_features.dpll_bypass_vals |= + (1 << OMAP3XXX_EN_DPLL_LPBYPASS) | + (1 << OMAP3XXX_EN_DPLL_FRBYPASS); + } else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx() || + soc_is_omap54xx() || soc_is_dra7xx()) { + ti_clk_features.dpll_bypass_vals |= + (1 << OMAP4XXX_EN_DPLL_LPBYPASS) | + (1 << OMAP4XXX_EN_DPLL_FRBYPASS) | + (1 << OMAP4XXX_EN_DPLL_MNBYPASS); + } + + /* Jitter correction only available on OMAP343X */ + if (cpu_is_omap343x()) + ti_clk_features.flags |= TI_CLK_DPLL_HAS_FREQSEL; + + /* Idlest value for interface clocks. + * 24xx uses 0 to indicate not ready, and 1 to indicate ready. + * 34xx reverses this, just to keep us on our toes + * AM35xx uses both, depending on the module. + */ + if (cpu_is_omap24xx()) + ti_clk_features.cm_idlest_val = OMAP24XX_CM_IDLEST_VAL; + else if (cpu_is_omap34xx()) + ti_clk_features.cm_idlest_val = OMAP34XX_CM_IDLEST_VAL; +} |