diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap2/clkt_dpll.c | 98 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clkt_iclk.c | 8 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock.c | 76 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/clock.h | 44 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/dpll3xxx.c | 7 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/dpll44xx.c | 19 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/io.c | 2 |
7 files changed, 154 insertions, 100 deletions
diff --git a/arch/arm/mach-omap2/clkt_dpll.c b/arch/arm/mach-omap2/clkt_dpll.c index 332af92..3c34df0 100644 --- a/arch/arm/mach-omap2/clkt_dpll.c +++ b/arch/arm/mach-omap2/clkt_dpll.c @@ -21,10 +21,7 @@ #include <asm/div64.h> -#include "soc.h" #include "clock.h" -#include "cm-regbits-24xx.h" -#include "cm-regbits-34xx.h" /* DPLL rate rounding: minimum DPLL multiplier, divider values */ #define DPLL_MIN_MULTIPLIER 2 @@ -44,20 +41,12 @@ #define DPLL_ROUNDING_VAL ((DPLL_SCALE_BASE / 2) * \ (DPLL_SCALE_FACTOR / DPLL_SCALE_BASE)) -/* 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_JTYPE_MIN 500000 #define OMAP3PLUS_DPLL_FINT_JTYPE_MAX 2500000 -#define OMAP3PLUS_DPLL_FINT_MIN 32000 -#define OMAP3PLUS_DPLL_FINT_MAX 52000000 /* _dpll_test_fint() return codes */ #define DPLL_FINT_UNDERFLOW -1 @@ -87,33 +76,31 @@ static int _dpll_test_fint(struct clk_hw_omap *clk, u8 n) /* DPLL divider must result in a valid jitter correction val */ fint = __clk_get_rate(__clk_get_parent(clk->hw.clk)) / n; - if (cpu_is_omap24xx()) { - /* Should not be called for OMAP2, so warn if it is called */ - WARN(1, "No fint limits available for OMAP2!\n"); - return DPLL_FINT_INVALID; - } else if (cpu_is_omap3430()) { - fint_min = OMAP3430_DPLL_FINT_BAND1_MIN; - fint_max = OMAP3430_DPLL_FINT_BAND2_MAX; - } else if (dd->flags & DPLL_J_TYPE) { + if (dd->flags & DPLL_J_TYPE) { fint_min = OMAP3PLUS_DPLL_FINT_JTYPE_MIN; fint_max = OMAP3PLUS_DPLL_FINT_JTYPE_MAX; } else { - fint_min = OMAP3PLUS_DPLL_FINT_MIN; - fint_max = OMAP3PLUS_DPLL_FINT_MAX; + fint_min = ti_clk_features.fint_min; + fint_max = ti_clk_features.fint_max; } - if (fint < fint_min) { + if (!fint_min || !fint_max) { + WARN(1, "No fint limits available!\n"); + return DPLL_FINT_INVALID; + } + + if (fint < ti_clk_features.fint_min) { pr_debug("rejecting n=%d due to Fint failure, lowering max_divider\n", n); dd->max_divider = n; ret = DPLL_FINT_UNDERFLOW; - } else if (fint > fint_max) { + } else if (fint > ti_clk_features.fint_max) { pr_debug("rejecting n=%d due to Fint failure, boosting min_divider\n", n); dd->min_divider = n; ret = DPLL_FINT_INVALID; - } else if (cpu_is_omap3430() && fint > OMAP3430_DPLL_FINT_BAND1_MAX && - fint < OMAP3430_DPLL_FINT_BAND2_MIN) { + } else if (fint > ti_clk_features.fint_band1_max && + fint < ti_clk_features.fint_band2_min) { pr_debug("rejecting n=%d due to Fint failure\n", n); ret = DPLL_FINT_INVALID; } @@ -185,6 +172,34 @@ static int _dpll_test_mult(int *m, int n, unsigned long *new_rate, return r; } +/** + * _omap2_dpll_is_in_bypass - check if DPLL is in bypass mode or not + * @v: bitfield value of the DPLL enable + * + * Checks given DPLL enable bitfield to see whether the DPLL is in bypass + * mode or not. Returns 1 if the DPLL is in bypass, 0 otherwise. + */ +static int _omap2_dpll_is_in_bypass(u32 v) +{ + u8 mask, val; + + mask = ti_clk_features.dpll_bypass_vals; + + /* + * Each set bit in the mask corresponds to a bypass value equal + * to the bitshift. Go through each set-bit in the mask and + * compare against the given register value. + */ + while (mask) { + val = __ffs(mask); + mask ^= (1 << val); + if (v == val) + return 1; + } + + return 0; +} + /* Public functions */ u8 omap2_init_dpll_parent(struct clk_hw *hw) { @@ -201,20 +216,9 @@ u8 omap2_init_dpll_parent(struct clk_hw *hw) v >>= __ffs(dd->enable_mask); /* Reparent the struct clk in case the dpll is in bypass */ - if (cpu_is_omap24xx()) { - if (v == OMAP2XXX_EN_DPLL_LPBYPASS || - v == OMAP2XXX_EN_DPLL_FRBYPASS) - return 1; - } else if (cpu_is_omap34xx()) { - if (v == OMAP3XXX_EN_DPLL_LPBYPASS || - v == OMAP3XXX_EN_DPLL_FRBYPASS) - return 1; - } else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx()) { - if (v == OMAP4XXX_EN_DPLL_LPBYPASS || - v == OMAP4XXX_EN_DPLL_FRBYPASS || - v == OMAP4XXX_EN_DPLL_MNBYPASS) - return 1; - } + if (_omap2_dpll_is_in_bypass(v)) + return 1; + return 0; } @@ -247,20 +251,8 @@ unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk) v &= dd->enable_mask; v >>= __ffs(dd->enable_mask); - if (cpu_is_omap24xx()) { - if (v == OMAP2XXX_EN_DPLL_LPBYPASS || - v == OMAP2XXX_EN_DPLL_FRBYPASS) - return __clk_get_rate(dd->clk_bypass); - } else if (cpu_is_omap34xx()) { - if (v == OMAP3XXX_EN_DPLL_LPBYPASS || - v == OMAP3XXX_EN_DPLL_FRBYPASS) - return __clk_get_rate(dd->clk_bypass); - } else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx()) { - if (v == OMAP4XXX_EN_DPLL_LPBYPASS || - v == OMAP4XXX_EN_DPLL_FRBYPASS || - v == OMAP4XXX_EN_DPLL_MNBYPASS) - return __clk_get_rate(dd->clk_bypass); - } + if (_omap2_dpll_is_in_bypass(v)) + return __clk_get_rate(dd->clk_bypass); v = omap2_clk_readl(clk, dd->mult_div1_reg); dpll_mult = v & dd->mult_mask; diff --git a/arch/arm/mach-omap2/clkt_iclk.c b/arch/arm/mach-omap2/clkt_iclk.c index 333f0a6..55eb579 100644 --- a/arch/arm/mach-omap2/clkt_iclk.c +++ b/arch/arm/mach-omap2/clkt_iclk.c @@ -14,11 +14,11 @@ #include <linux/clk-provider.h> #include <linux/io.h> - #include "clock.h" -#include "clock2xxx.h" -#include "cm2xxx_3xxx.h" -#include "cm-regbits-24xx.h" + +/* Register offsets */ +#define CM_AUTOIDLE 0x30 +#define CM_ICLKEN 0x10 /* Private functions */ diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c index 591581a..5a0cac9 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; +} diff --git a/arch/arm/mach-omap2/clock.h b/arch/arm/mach-omap2/clock.h index 12f54d4..0f100dc 100644 --- a/arch/arm/mach-omap2/clock.h +++ b/arch/arm/mach-omap2/clock.h @@ -101,31 +101,6 @@ struct clockdomain; }; \ DEFINE_STRUCT_CLK(_name, _parent_names, _ops); -#define DEFINE_CLK_OMAP_HSDIVIDER(_name, _parent_name, \ - _parent_ptr, _flags, \ - _clksel_reg, _clksel_mask) \ - static const struct clksel _name##_div[] = { \ - { \ - .parent = _parent_ptr, \ - .rates = div31_1to31_rates \ - }, \ - { .parent = NULL }, \ - }; \ - static struct clk _name; \ - static const char *_name##_parent_names[] = { \ - _parent_name, \ - }; \ - static struct clk_hw_omap _name##_hw = { \ - .hw = { \ - .clk = &_name, \ - }, \ - .clksel = _name##_div, \ - .clksel_reg = _clksel_reg, \ - .clksel_mask = _clksel_mask, \ - .ops = &clkhwops_omap4_dpllmx, \ - }; \ - DEFINE_STRUCT_CLK(_name, _name##_parent_names, omap_hsdivider_ops); - /* struct clksel_rate.flags possibilities */ #define RATE_IN_242X (1 << 0) #define RATE_IN_243X (1 << 1) @@ -248,6 +223,23 @@ void omap2_clk_writel(u32 val, struct clk_hw_omap *clk, void __iomem *reg); extern u16 cpu_mask; +/* + * Clock features setup. Used instead of CPU type checks. + */ +struct ti_clk_features { + u32 flags; + long fint_min; + long fint_max; + long fint_band1_max; + long fint_band2_min; + u8 dpll_bypass_vals; + u8 cm_idlest_val; +}; + +#define TI_CLK_DPLL_HAS_FREQSEL (1 << 0) + +extern struct ti_clk_features ti_clk_features; + extern const struct clkops clkops_omap2_dflt_wait; extern const struct clkops clkops_dummy; extern const struct clkops clkops_omap2_dflt; @@ -286,4 +278,6 @@ extern int omap2_clkops_enable_clkdm(struct clk_hw *hw); extern void omap2_clkops_disable_clkdm(struct clk_hw *hw); extern void omap_clocks_register(struct omap_clk *oclks, int cnt); + +void __init ti_clk_init_features(void); #endif diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c index 6d7ba37..cd5f3a0 100644 --- a/arch/arm/mach-omap2/dpll3xxx.c +++ b/arch/arm/mach-omap2/dpll3xxx.c @@ -28,11 +28,8 @@ #include <linux/bitops.h> #include <linux/clkdev.h> -#include "soc.h" #include "clockdomain.h" #include "clock.h" -#include "cm2xxx_3xxx.h" -#include "cm-regbits-34xx.h" /* CM_AUTOIDLE_PLL*.AUTO_* bit values */ #define DPLL_AUTOIDLE_DISABLE 0x0 @@ -310,7 +307,7 @@ static int omap3_noncore_dpll_program(struct clk_hw_omap *clk, u16 freqsel) * Set jitter correction. Jitter correction applicable for OMAP343X * only since freqsel field is no longer present on other devices. */ - if (cpu_is_omap343x()) { + if (ti_clk_features.flags & TI_CLK_DPLL_HAS_FREQSEL) { v = omap2_clk_readl(clk, dd->control_reg); v &= ~dd->freqsel_mask; v |= freqsel << __ffs(dd->freqsel_mask); @@ -512,7 +509,7 @@ int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate, return -EINVAL; /* Freqsel is available only on OMAP343X devices */ - if (cpu_is_omap343x()) { + if (ti_clk_features.flags & TI_CLK_DPLL_HAS_FREQSEL) { freqsel = _omap3_dpll_compute_freqsel(clk, dd->last_rounded_n); WARN_ON(!freqsel); diff --git a/arch/arm/mach-omap2/dpll44xx.c b/arch/arm/mach-omap2/dpll44xx.c index 52f9438..4613f1e 100644 --- a/arch/arm/mach-omap2/dpll44xx.c +++ b/arch/arm/mach-omap2/dpll44xx.c @@ -15,10 +15,7 @@ #include <linux/io.h> #include <linux/bitops.h> -#include "soc.h" #include "clock.h" -#include "clock44xx.h" -#include "cm-regbits-44xx.h" /* * Maximum DPLL input frequency (FINT) and output frequency (FOUT) that @@ -29,13 +26,23 @@ #define OMAP4_DPLL_LP_FINT_MAX 1000000 #define OMAP4_DPLL_LP_FOUT_MAX 100000000 +/* + * Bitfield declarations + */ +#define OMAP4430_DPLL_CLKOUT_GATE_CTRL_MASK (1 << 8) +#define OMAP4430_DPLL_CLKOUTX2_GATE_CTRL_MASK (1 << 10) +#define OMAP4430_DPLL_REGM4XEN_MASK (1 << 11) + +/* Static rate multiplier for OMAP4 REGM4XEN clocks */ +#define OMAP4430_REGM4XEN_MULT 4 + /* Supported only on OMAP4 */ int omap4_dpllmx_gatectrl_read(struct clk_hw_omap *clk) { u32 v; u32 mask; - if (!clk || !clk->clksel_reg || !cpu_is_omap44xx()) + if (!clk || !clk->clksel_reg) return -EINVAL; mask = clk->flags & CLOCK_CLKOUTX2 ? @@ -54,7 +61,7 @@ void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk) u32 v; u32 mask; - if (!clk || !clk->clksel_reg || !cpu_is_omap44xx()) + if (!clk || !clk->clksel_reg) return; mask = clk->flags & CLOCK_CLKOUTX2 ? @@ -72,7 +79,7 @@ void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk) u32 v; u32 mask; - if (!clk || !clk->clksel_reg || !cpu_is_omap44xx()) + if (!clk || !clk->clksel_reg) return; mask = clk->flags & CLOCK_CLKOUTX2 ? diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index 8f55945..1fae5c1 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -728,6 +728,8 @@ int __init omap_clk_init(void) if (!omap_clk_soc_init) return 0; + ti_clk_init_features(); + ret = of_prcm_init(); if (!ret) ret = omap_clk_soc_init(); |
