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Diffstat (limited to 'arch/arm/mach-omap2/clock.c')
-rw-r--r--arch/arm/mach-omap2/clock.c97
1 files changed, 69 insertions, 28 deletions
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 591581a66532..500530d1364a 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
@@ -82,27 +100,6 @@ u32 omap2_clk_readl(struct clk_hw_omap *clk, void __iomem *reg)
}
/*
- * Used for clocks that have the same value as the parent clock,
- * divided by some factor
- */
-unsigned long omap_fixed_divisor_recalc(struct clk_hw *hw,
- unsigned long parent_rate)
-{
- struct clk_hw_omap *oclk;
-
- if (!hw) {
- pr_warn("%s: hw is NULL\n", __func__);
- return -EINVAL;
- }
-
- oclk = to_clk_hw_omap(hw);
-
- WARN_ON(!oclk->fixed_div);
-
- return parent_rate / oclk->fixed_div;
-}
-
-/*
* OMAP2+ specific clock functions
*/
@@ -287,13 +284,7 @@ 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 +722,53 @@ 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;
+}