@@ -211,25 +211,52 @@ void omap2_init_clksel_parent(struct clk *clk)
return;
}
-/* Returns the DPLL rate */
+/**
+ * omap2_get_dpll_rate - returns the current DPLL CLKOUT rate
+ * @clk: struct clk * of a DPLL
+ *
+ * DPLLs can be locked or bypassed - basically, enabled or disabled.
+ * When locked, the DPLL output depends on the M and N values. When
+ * bypassed, on OMAP2xxx, the output rate is either the 32KiHz clock
+ * or sys_clk. Bypass rates on OMAP3 depend on the DPLL: DPLLs 1 and
+ * 2 are bypassed with dpll1_fclk and dpll2_fclk respectively
+ * (generated by DPLL3), while DPLL 3, 4, and 5 bypass rates are sys_clk.
+ * Returns the current DPLL CLKOUT rate (*not* CLKOUTX2) if the DPLL is
+ * locked, or the appropriate bypass rate if the DPLL is bypassed, or 0
+ * if the clock @clk is not a DPLL.
+ */
u32 omap2_get_dpll_rate(struct clk *clk)
{
long long dpll_clk;
- u32 dpll_mult, dpll_div, dpll;
+ u32 dpll_mult, dpll_div, v;
struct dpll_data *dd;
dd = clk->dpll_data;
- /* REVISIT: What do we return on error? */
if (!dd)
return 0;
- dpll = __raw_readl(dd->mult_div1_reg);
- dpll_mult = dpll & dd->mult_mask;
+ /* Return bypass rate if DPLL is bypassed */
+ v = __raw_readl(dd->control_reg);
+ 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 dd->clk_bypass->rate;
+ } else if (cpu_is_omap34xx()) {
+ if (v == OMAP3XXX_EN_DPLL_LPBYPASS ||
+ v == OMAP3XXX_EN_DPLL_FRBYPASS)
+ return dd->clk_bypass->rate;
+ }
+
+ v = __raw_readl(dd->mult_div1_reg);
+ dpll_mult = v & dd->mult_mask;
dpll_mult >>= __ffs(dd->mult_mask);
- dpll_div = dpll & dd->div1_mask;
+ dpll_div = v & dd->div1_mask;
dpll_div >>= __ffs(dd->div1_mask);
- dpll_clk = (long long)clk->parent->rate * dpll_mult;
+ dpll_clk = (long long)dd->clk_ref->rate * dpll_mult;
do_div(dpll_clk, dpll_div + 1);
return dpll_clk;
@@ -930,7 +957,7 @@ long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate)
pr_debug("clock: starting DPLL round_rate for clock %s, target rate "
"%ld\n", clk->name, target_rate);
- scaled_rt_rp = target_rate / (clk->parent->rate / DPLL_SCALE_FACTOR);
+ scaled_rt_rp = target_rate / (dd->clk_ref->rate / DPLL_SCALE_FACTOR);
scaled_max_m = dd->max_multiplier * DPLL_SCALE_FACTOR;
dd->last_rounded_rate = 0;
@@ -957,7 +984,7 @@ long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate)
break;
r = _dpll_test_mult(&m, n, &new_rate, target_rate,
- clk->parent->rate);
+ dd->clk_ref->rate);
/* m can't be set low enough for this n - try with a larger n */
if (r == DPLL_MULT_UNDERFLOW)
@@ -988,7 +1015,7 @@ long omap2_dpll_round_rate(struct clk *clk, unsigned long target_rate)
dd->last_rounded_m = min_e_m;
dd->last_rounded_n = min_e_n;
- dd->last_rounded_rate = _dpll_compute_new_rate(clk->parent->rate,
+ dd->last_rounded_rate = _dpll_compute_new_rate(dd->clk_ref->rate,
min_e_m, min_e_n);
pr_debug("clock: final least error: e = %d, m = %d, n = %d\n",
@@ -21,6 +21,21 @@
/* The maximum error between a target DPLL rate and the rounded rate in Hz */
#define DEFAULT_DPLL_RATE_TOLERANCE 50000
+/* CM_CLKSEL2_PLL.CORE_CLK_SRC bits (2XXX) */
+#define CORE_CLK_SRC_32K 0x0
+#define CORE_CLK_SRC_DPLL 0x1
+#define CORE_CLK_SRC_DPLL_X2 0x2
+
+/* OMAP2xxx CM_CLKEN_PLL.EN_DPLL bits - for omap2_get_dpll_rate() */
+#define OMAP2XXX_EN_DPLL_LPBYPASS 0x1
+#define OMAP2XXX_EN_DPLL_FRBYPASS 0x2
+#define OMAP2XXX_EN_DPLL_LOCKED 0x3
+
+/* OMAP3xxx CM_CLKEN_PLL*.EN_*_DPLL bits - for omap2_get_dpll_rate() */
+#define OMAP3XXX_EN_DPLL_LPBYPASS 0x5
+#define OMAP3XXX_EN_DPLL_FRBYPASS 0x6
+#define OMAP3XXX_EN_DPLL_LOCKED 0x7
+
int omap2_clk_init(void);
int omap2_clk_enable(struct clk *clk);
void omap2_clk_disable(struct clk *clk);
@@ -236,19 +236,32 @@ static struct clk *sclk;
* Omap24xx specific clock functions
*-------------------------------------------------------------------------*/
-/* This actually returns the rate of core_ck, not dpll_ck. */
-static u32 omap2_get_dpll_rate_24xx(struct clk *tclk)
+/**
+ * omap2xxx_clk_get_core_rate - return the CORE_CLK rate
+ * @clk: pointer to the combined dpll_ck + core_ck (currently "dpll_ck")
+ *
+ * Returns the CORE_CLK rate. CORE_CLK can have one of three rate
+ * sources on OMAP2xxx: the DPLL CLKOUT rate, DPLL CLKOUTX2, or 32KHz
+ * (the latter is unusual). This currently should be called with
+ * struct clk *dpll_ck, which is a composite clock of dpll_ck and
+ * core_ck.
+ */
+static unsigned long omap2xxx_clk_get_core_rate(struct clk *clk)
{
- long long dpll_clk;
- u8 amult;
+ long long core_clk;
+ u32 v;
- dpll_clk = omap2_get_dpll_rate(tclk);
+ core_clk = omap2_get_dpll_rate(clk);
- amult = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
- amult &= OMAP24XX_CORE_CLK_SRC_MASK;
- dpll_clk *= amult;
+ v = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
+ v &= OMAP24XX_CORE_CLK_SRC_MASK;
+
+ if (v == CORE_CLK_SRC_32K)
+ core_clk = 32768;
+ else
+ core_clk *= v;
- return dpll_clk;
+ return core_clk;
}
static int omap2_enable_osc_ck(struct clk *clk)
@@ -371,7 +384,7 @@ static long omap2_dpllcore_round_rate(unsigned long target_rate)
static unsigned long omap2_dpllcore_recalc(struct clk *clk)
{
- return omap2_get_dpll_rate_24xx(clk);
+ return omap2xxx_clk_get_core_rate(clk);
}
static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
@@ -381,7 +394,7 @@ static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
struct prcm_config tmpset;
const struct dpll_data *dd;
- cur_rate = omap2_get_dpll_rate_24xx(&dpll_ck);
+ cur_rate = omap2xxx_clk_get_core_rate(&dpll_ck);
mult = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
mult &= OMAP24XX_CORE_CLK_SRC_MASK;
@@ -516,7 +529,7 @@ static int omap2_select_table_rate(struct clk *clk, unsigned long rate)
}
curr_prcm_set = prcm;
- cur_rate = omap2_get_dpll_rate_24xx(&dpll_ck);
+ cur_rate = omap2xxx_clk_get_core_rate(&dpll_ck);
if (prcm->dpll_speed == cur_rate / 2) {
omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL, 1);
@@ -728,7 +741,7 @@ int __init omap2_clk_init(void)
}
/* Check the MPU rate set by bootloader */
- clkrate = omap2_get_dpll_rate_24xx(&dpll_ck);
+ clkrate = omap2xxx_clk_get_core_rate(&dpll_ck);
for (prcm = rate_table; prcm->mpu_speed; prcm++) {
if (!(prcm->flags & cpu_mask))
continue;
@@ -663,6 +663,10 @@ static struct dpll_data dpll_dd = {
.mult_div1_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL1),
.mult_mask = OMAP24XX_DPLL_MULT_MASK,
.div1_mask = OMAP24XX_DPLL_DIV_MASK,
+ .clk_bypass = &sys_ck,
+ .clk_ref = &sys_ck,
+ .control_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
+ .enable_mask = OMAP24XX_EN_DPLL_MASK,
.max_multiplier = 1024,
.min_divider = 1,
.max_divider = 16,
@@ -93,7 +93,6 @@ static struct omap_clk omap34xx_clks[] = {
CLK(NULL, "omap_96m_alwon_fck", &omap_96m_alwon_fck, CK_343X),
CLK(NULL, "omap_96m_fck", &omap_96m_fck, CK_343X),
CLK(NULL, "cm_96m_fck", &cm_96m_fck, CK_343X),
- CLK(NULL, "virt_omap_54m_fck", &virt_omap_54m_fck, CK_343X),
CLK(NULL, "omap_54m_fck", &omap_54m_fck, CK_343X),
CLK(NULL, "omap_48m_fck", &omap_48m_fck, CK_343X),
CLK(NULL, "omap_12m_fck", &omap_12m_fck, CK_343X),
@@ -110,7 +109,6 @@ static struct omap_clk omap34xx_clks[] = {
CLK(NULL, "emu_per_alwon_ck", &emu_per_alwon_ck, CK_343X),
CLK(NULL, "dpll5_ck", &dpll5_ck, CK_3430ES2),
CLK(NULL, "dpll5_m2_ck", &dpll5_m2_ck, CK_3430ES2),
- CLK(NULL, "omap_120m_fck", &omap_120m_fck, CK_3430ES2),
CLK(NULL, "clkout2_src_ck", &clkout2_src_ck, CK_343X),
CLK(NULL, "sys_clkout2", &sys_clkout2, CK_343X),
CLK(NULL, "corex2_fck", &corex2_fck, CK_343X),
@@ -344,7 +342,7 @@ static u16 _omap3_dpll_compute_freqsel(struct clk *clk, u8 n)
unsigned long fint;
u16 f = 0;
- fint = clk->parent->rate / (n + 1);
+ fint = clk->dpll_data->clk_ref->rate / (n + 1);
pr_debug("clock: fint is %lu\n", fint);
@@ -411,7 +409,7 @@ static int _omap3_noncore_dpll_lock(struct clk *clk)
}
/*
- * omap3_noncore_dpll_bypass - instruct a DPLL to bypass and wait for readiness
+ * _omap3_noncore_dpll_bypass - instruct a DPLL to bypass and wait for readiness
* @clk: pointer to a DPLL struct clk
*
* Instructs a non-CORE DPLL to enter low-power bypass mode. In
@@ -501,14 +499,25 @@ static int _omap3_noncore_dpll_stop(struct clk *clk)
static int omap3_noncore_dpll_enable(struct clk *clk)
{
int r;
+ struct dpll_data *dd;
if (clk == &dpll3_ck)
return -EINVAL;
- if (clk->parent->rate == omap2_get_dpll_rate(clk))
+ dd = clk->dpll_data;
+ if (!dd)
+ return -EINVAL;
+
+ if (clk->rate == dd->clk_bypass->rate) {
+ WARN_ON(clk->parent != dd->clk_bypass);
r = _omap3_noncore_dpll_bypass(clk);
- else
+ } else {
+ WARN_ON(clk->parent != dd->clk_ref);
r = _omap3_noncore_dpll_lock(clk);
+ }
+ /* FIXME: this is dubious - if clk->rate has changed, what about propagating? */
+ if (!r)
+ clk->rate = omap2_get_dpll_rate(clk);
return r;
}
@@ -583,13 +592,18 @@ static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
* @clk: struct clk * of DPLL to set
* @rate: rounded target rate
*
- * Program the DPLL with the rounded target rate. Returns -EINVAL upon
- * error, or 0 upon success.
+ * Set the DPLL CLKOUT to the target rate. If the DPLL can enter
+ * low-power bypass, and the target rate is the bypass source clock
+ * rate, then configure the DPLL for bypass. Otherwise, round the
+ * target rate if it hasn't been done already, then program and lock
+ * the DPLL. Returns -EINVAL upon error, or 0 upon success.
*/
static int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
{
+ struct clk *new_parent = NULL;
u16 freqsel;
struct dpll_data *dd;
+ int ret;
if (!clk || !rate)
return -EINVAL;
@@ -601,18 +615,56 @@ static int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
if (rate == omap2_get_dpll_rate(clk))
return 0;
- if (dd->last_rounded_rate != rate)
- omap2_dpll_round_rate(clk, rate);
+ /*
+ * Ensure both the bypass and ref clocks are enabled prior to
+ * doing anything; we need the bypass clock running to reprogram
+ * the DPLL.
+ */
+ omap2_clk_enable(dd->clk_bypass);
+ omap2_clk_enable(dd->clk_ref);
+
+ if (dd->clk_bypass->rate == rate &&
+ (clk->dpll_data->modes & (1 << DPLL_LOW_POWER_BYPASS))) {
+ pr_debug("clock: %s: set rate: entering bypass.\n", clk->name);
- if (dd->last_rounded_rate == 0)
- return -EINVAL;
+ ret = _omap3_noncore_dpll_bypass(clk);
+ if (!ret)
+ new_parent = dd->clk_bypass;
+ } else {
+ if (dd->last_rounded_rate != rate)
+ omap2_dpll_round_rate(clk, rate);
+
+ if (dd->last_rounded_rate == 0)
+ return -EINVAL;
+
+ freqsel = _omap3_dpll_compute_freqsel(clk, dd->last_rounded_n);
+ if (!freqsel)
+ WARN_ON(1);
- freqsel = _omap3_dpll_compute_freqsel(clk, dd->last_rounded_n);
- if (!freqsel)
- WARN_ON(1);
+ pr_debug("clock: %s: set rate: locking rate to %lu.\n",
+ clk->name, rate);
- omap3_noncore_dpll_program(clk, dd->last_rounded_m, dd->last_rounded_n,
- freqsel);
+ ret = omap3_noncore_dpll_program(clk, dd->last_rounded_m,
+ dd->last_rounded_n, freqsel);
+ if (!ret)
+ new_parent = dd->clk_ref;
+ }
+ if (!ret) {
+ /*
+ * Switch the parent clock in the heirarchy, and make sure
+ * that the new parent's usecount is correct. Note: we
+ * enable the new parent before disabling the old to avoid
+ * any unnecessary hardware disable->enable transitions.
+ */
+ if (clk->usecount) {
+ omap2_clk_enable(new_parent);
+ omap2_clk_disable(clk->parent);
+ }
+ clk_reparent(clk, new_parent);
+ clk->rate = rate;
+ }
+ omap2_clk_disable(dd->clk_ref);
+ omap2_clk_disable(dd->clk_bypass);
return 0;
}
@@ -804,11 +856,11 @@ static unsigned long omap3_clkoutx2_recalc(struct clk *clk)
dd = pclk->dpll_data;
- WARN_ON(!dd->control_reg || !dd->enable_mask);
+ WARN_ON(!dd->enable_mask);
v = __raw_readl(dd->control_reg) & dd->enable_mask;
v >>= __ffs(dd->enable_mask);
- if (v != DPLL_LOCKED)
+ if (v != OMAP3XXX_EN_DPLL_LOCKED)
rate = clk->parent->rate;
else
rate = clk->parent->rate * 2;
@@ -48,6 +48,10 @@ static int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate);
* DPLL5 supplies other peripheral clocks (USBHOST, USIM).
*/
+/* Forward declarations for DPLL bypass clocks */
+static struct clk dpll1_fck;
+static struct clk dpll2_fck;
+
/* CM_CLKEN_PLL*.EN* bit values - not all are available for every DPLL */
#define DPLL_LOW_POWER_STOP 0x1
#define DPLL_LOW_POWER_BYPASS 0x5
@@ -217,16 +221,6 @@ static struct clk sys_clkout1 = {
/* CM CLOCKS */
-static const struct clksel_rate dpll_bypass_rates[] = {
- { .div = 1, .val = 0, .flags = RATE_IN_343X | DEFAULT_RATE },
- { .div = 0 }
-};
-
-static const struct clksel_rate dpll_locked_rates[] = {
- { .div = 1, .val = 1, .flags = RATE_IN_343X | DEFAULT_RATE },
- { .div = 0 }
-};
-
static const struct clksel_rate div16_dpll_rates[] = {
{ .div = 1, .val = 1, .flags = RATE_IN_343X | DEFAULT_RATE },
{ .div = 2, .val = 2, .flags = RATE_IN_343X },
@@ -254,6 +248,8 @@ static struct dpll_data dpll1_dd = {
.mult_div1_reg = OMAP_CM_REGADDR(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL),
.mult_mask = OMAP3430_MPU_DPLL_MULT_MASK,
.div1_mask = OMAP3430_MPU_DPLL_DIV_MASK,
+ .clk_bypass = &dpll1_fck,
+ .clk_ref = &sys_ck,
.freqsel_mask = OMAP3430_MPU_DPLL_FREQSEL_MASK,
.control_reg = OMAP_CM_REGADDR(MPU_MOD, OMAP3430_CM_CLKEN_PLL),
.enable_mask = OMAP3430_EN_MPU_DPLL_MASK,
@@ -324,6 +320,8 @@ static struct dpll_data dpll2_dd = {
.mult_div1_reg = OMAP_CM_REGADDR(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSEL1_PLL),
.mult_mask = OMAP3430_IVA2_DPLL_MULT_MASK,
.div1_mask = OMAP3430_IVA2_DPLL_DIV_MASK,
+ .clk_bypass = &dpll2_fck,
+ .clk_ref = &sys_ck,
.freqsel_mask = OMAP3430_IVA2_DPLL_FREQSEL_MASK,
.control_reg = OMAP_CM_REGADDR(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKEN_PLL),
.enable_mask = OMAP3430_EN_IVA2_DPLL_MASK,
@@ -384,6 +382,8 @@ static struct dpll_data dpll3_dd = {
.mult_div1_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL1),
.mult_mask = OMAP3430_CORE_DPLL_MULT_MASK,
.div1_mask = OMAP3430_CORE_DPLL_DIV_MASK,
+ .clk_bypass = &sys_ck,
+ .clk_ref = &sys_ck,
.freqsel_mask = OMAP3430_CORE_DPLL_FREQSEL_MASK,
.control_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_mask = OMAP3430_EN_CORE_DPLL_MASK,
@@ -477,37 +477,19 @@ static struct clk dpll3_m2_ck = {
.recalc = &omap2_clksel_recalc,
};
-static const struct clksel core_ck_clksel[] = {
- { .parent = &sys_ck, .rates = dpll_bypass_rates },
- { .parent = &dpll3_m2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
-};
-
static struct clk core_ck = {
.name = "core_ck",
.ops = &clkops_null,
- .init = &omap2_init_clksel_parent,
- .clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
- .clksel_mask = OMAP3430_ST_CORE_CLK_MASK,
- .clksel = core_ck_clksel,
- .recalc = &omap2_clksel_recalc,
-};
-
-static const struct clksel dpll3_m2x2_ck_clksel[] = {
- { .parent = &sys_ck, .rates = dpll_bypass_rates },
- { .parent = &dpll3_x2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
+ .parent = &dpll3_m2_ck,
+ .recalc = &followparent_recalc,
};
static struct clk dpll3_m2x2_ck = {
.name = "dpll3_m2x2_ck",
.ops = &clkops_null,
- .init = &omap2_init_clksel_parent,
- .clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
- .clksel_mask = OMAP3430_ST_CORE_CLK_MASK,
- .clksel = dpll3_m2x2_ck_clksel,
+ .parent = &dpll3_x2_ck,
.clkdm_name = "dpll3_clkdm",
- .recalc = &omap2_clksel_recalc,
+ .recalc = &followparent_recalc,
};
/* The PWRDN bit is apparently only available on 3430ES2 and above */
@@ -541,22 +523,12 @@ static struct clk dpll3_m3x2_ck = {
.recalc = &omap3_clkoutx2_recalc,
};
-static const struct clksel emu_core_alwon_ck_clksel[] = {
- { .parent = &sys_ck, .rates = dpll_bypass_rates },
- { .parent = &dpll3_m3x2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
-};
-
static struct clk emu_core_alwon_ck = {
.name = "emu_core_alwon_ck",
.ops = &clkops_null,
.parent = &dpll3_m3x2_ck,
- .init = &omap2_init_clksel_parent,
- .clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
- .clksel_mask = OMAP3430_ST_CORE_CLK_MASK,
- .clksel = emu_core_alwon_ck_clksel,
.clkdm_name = "dpll3_clkdm",
- .recalc = &omap2_clksel_recalc,
+ .recalc = &followparent_recalc,
};
/* DPLL4 */
@@ -566,6 +538,8 @@ static struct dpll_data dpll4_dd = {
.mult_div1_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL2),
.mult_mask = OMAP3430_PERIPH_DPLL_MULT_MASK,
.div1_mask = OMAP3430_PERIPH_DPLL_DIV_MASK,
+ .clk_bypass = &sys_ck,
+ .clk_ref = &sys_ck,
.freqsel_mask = OMAP3430_PERIPH_DPLL_FREQSEL_MASK,
.control_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_mask = OMAP3430_EN_PERIPH_DPLL_MASK,
@@ -637,12 +611,6 @@ static struct clk dpll4_m2x2_ck = {
.recalc = &omap3_clkoutx2_recalc,
};
-static const struct clksel omap_96m_alwon_fck_clksel[] = {
- { .parent = &sys_ck, .rates = dpll_bypass_rates },
- { .parent = &dpll4_m2x2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
-};
-
/*
* DPLL4 generates DPLL4_M2X2_CLK which is then routed into the PRM as
* PRM_96M_ALWON_(F)CLK. Two clocks then emerge from the PRM:
@@ -653,11 +621,7 @@ static struct clk omap_96m_alwon_fck = {
.name = "omap_96m_alwon_fck",
.ops = &clkops_null,
.parent = &dpll4_m2x2_ck,
- .init = &omap2_init_clksel_parent,
- .clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
- .clksel_mask = OMAP3430_ST_PERIPH_CLK_MASK,
- .clksel = omap_96m_alwon_fck_clksel,
- .recalc = &omap2_clksel_recalc,
+ .recalc = &followparent_recalc,
};
static struct clk cm_96m_fck = {
@@ -720,23 +684,6 @@ static struct clk dpll4_m3x2_ck = {
.recalc = &omap3_clkoutx2_recalc,
};
-static const struct clksel virt_omap_54m_fck_clksel[] = {
- { .parent = &sys_ck, .rates = dpll_bypass_rates },
- { .parent = &dpll4_m3x2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
-};
-
-static struct clk virt_omap_54m_fck = {
- .name = "virt_omap_54m_fck",
- .ops = &clkops_null,
- .parent = &dpll4_m3x2_ck,
- .init = &omap2_init_clksel_parent,
- .clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
- .clksel_mask = OMAP3430_ST_PERIPH_CLK_MASK,
- .clksel = virt_omap_54m_fck_clksel,
- .recalc = &omap2_clksel_recalc,
-};
-
static const struct clksel_rate omap_54m_d4m3x2_rates[] = {
{ .div = 1, .val = 0, .flags = RATE_IN_343X | DEFAULT_RATE },
{ .div = 0 }
@@ -748,7 +695,7 @@ static const struct clksel_rate omap_54m_alt_rates[] = {
};
static const struct clksel omap_54m_clksel[] = {
- { .parent = &virt_omap_54m_fck, .rates = omap_54m_d4m3x2_rates },
+ { .parent = &dpll4_m3x2_ck, .rates = omap_54m_d4m3x2_rates },
{ .parent = &sys_altclk, .rates = omap_54m_alt_rates },
{ .parent = NULL }
};
@@ -891,6 +838,8 @@ static struct dpll_data dpll5_dd = {
.mult_div1_reg = OMAP_CM_REGADDR(PLL_MOD, OMAP3430ES2_CM_CLKSEL4),
.mult_mask = OMAP3430ES2_PERIPH2_DPLL_MULT_MASK,
.div1_mask = OMAP3430ES2_PERIPH2_DPLL_DIV_MASK,
+ .clk_bypass = &sys_ck,
+ .clk_ref = &sys_ck,
.freqsel_mask = OMAP3430ES2_PERIPH2_DPLL_FREQSEL_MASK,
.control_reg = OMAP_CM_REGADDR(PLL_MOD, OMAP3430ES2_CM_CLKEN2),
.enable_mask = OMAP3430ES2_EN_PERIPH2_DPLL_MASK,
@@ -936,23 +885,6 @@ static struct clk dpll5_m2_ck = {
.recalc = &omap2_clksel_recalc,
};
-static const struct clksel omap_120m_fck_clksel[] = {
- { .parent = &sys_ck, .rates = dpll_bypass_rates },
- { .parent = &dpll5_m2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
-};
-
-static struct clk omap_120m_fck = {
- .name = "omap_120m_fck",
- .ops = &clkops_null,
- .parent = &dpll5_m2_ck,
- .init = &omap2_init_clksel_parent,
- .clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST2),
- .clksel_mask = OMAP3430ES2_ST_PERIPH2_CLK_MASK,
- .clksel = omap_120m_fck_clksel,
- .recalc = &omap2_clksel_recalc,
-};
-
/* CM EXTERNAL CLOCK OUTPUTS */
static const struct clksel_rate clkout2_src_core_rates[] = {
@@ -1058,28 +990,12 @@ static struct clk dpll1_fck = {
.recalc = &omap2_clksel_recalc,
};
-/*
- * MPU clksel:
- * If DPLL1 is locked, mpu_ck derives from DPLL1; otherwise, mpu_ck
- * derives from the high-frequency bypass clock originating from DPLL3,
- * called 'dpll1_fck'
- */
-static const struct clksel mpu_clksel[] = {
- { .parent = &dpll1_fck, .rates = dpll_bypass_rates },
- { .parent = &dpll1_x2m2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
-};
-
static struct clk mpu_ck = {
.name = "mpu_ck",
.ops = &clkops_null,
.parent = &dpll1_x2m2_ck,
- .init = &omap2_init_clksel_parent,
- .clksel_reg = OMAP_CM_REGADDR(MPU_MOD, OMAP3430_CM_IDLEST_PLL),
- .clksel_mask = OMAP3430_ST_MPU_CLK_MASK,
- .clksel = mpu_clksel,
.clkdm_name = "mpu_clkdm",
- .recalc = &omap2_clksel_recalc,
+ .recalc = &followparent_recalc,
};
/* arm_fck is divided by two when DPLL1 locked; otherwise, passthrough mpu_ck */
@@ -1129,19 +1045,6 @@ static struct clk dpll2_fck = {
.recalc = &omap2_clksel_recalc,
};
-/*
- * IVA2 clksel:
- * If DPLL2 is locked, iva2_ck derives from DPLL2; otherwise, iva2_ck
- * derives from the high-frequency bypass clock originating from DPLL3,
- * called 'dpll2_fck'
- */
-
-static const struct clksel iva2_clksel[] = {
- { .parent = &dpll2_fck, .rates = dpll_bypass_rates },
- { .parent = &dpll2_m2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
-};
-
static struct clk iva2_ck = {
.name = "iva2_ck",
.ops = &clkops_omap2_dflt_wait,
@@ -1149,12 +1052,8 @@ static struct clk iva2_ck = {
.init = &omap2_init_clksel_parent,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_IVA2_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_SHIFT,
- .clksel_reg = OMAP_CM_REGADDR(OMAP3430_IVA2_MOD,
- OMAP3430_CM_IDLEST_PLL),
- .clksel_mask = OMAP3430_ST_IVA2_CLK_MASK,
- .clksel = iva2_clksel,
.clkdm_name = "iva2_clkdm",
- .recalc = &omap2_clksel_recalc,
+ .recalc = &followparent_recalc,
};
/* Common interface clocks */
@@ -1384,7 +1283,7 @@ static struct clk ts_fck = {
static struct clk usbtll_fck = {
.name = "usbtll_fck",
.ops = &clkops_omap2_dflt,
- .parent = &omap_120m_fck,
+ .parent = &dpll5_m2_ck,
.enable_reg = OMAP_CM_REGADDR(CORE_MOD, OMAP3430ES2_CM_FCLKEN3),
.enable_bit = OMAP3430ES2_EN_USBTLL_SHIFT,
.recalc = &followparent_recalc,
@@ -2094,24 +1993,14 @@ static struct clk des1_ick = {
};
/* DSS */
-static const struct clksel dss1_alwon_fck_clksel[] = {
- { .parent = &sys_ck, .rates = dpll_bypass_rates },
- { .parent = &dpll4_m4x2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
-};
-
static struct clk dss1_alwon_fck = {
.name = "dss1_alwon_fck",
.ops = &clkops_omap2_dflt,
.parent = &dpll4_m4x2_ck,
- .init = &omap2_init_clksel_parent,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_DSS1_SHIFT,
- .clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
- .clksel_mask = OMAP3430_ST_PERIPH_CLK_MASK,
- .clksel = dss1_alwon_fck_clksel,
.clkdm_name = "dss_clkdm",
- .recalc = &omap2_clksel_recalc,
+ .recalc = &followparent_recalc,
};
static struct clk dss_tv_fck = {
@@ -2161,24 +2050,14 @@ static struct clk dss_ick = {
/* CAM */
-static const struct clksel cam_mclk_clksel[] = {
- { .parent = &sys_ck, .rates = dpll_bypass_rates },
- { .parent = &dpll4_m5x2_ck, .rates = dpll_locked_rates },
- { .parent = NULL }
-};
-
static struct clk cam_mclk = {
.name = "cam_mclk",
.ops = &clkops_omap2_dflt_wait,
.parent = &dpll4_m5x2_ck,
- .init = &omap2_init_clksel_parent,
- .clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
- .clksel_mask = OMAP3430_ST_PERIPH_CLK_MASK,
- .clksel = cam_mclk_clksel,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_CAM_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_CAM_SHIFT,
.clkdm_name = "cam_clkdm",
- .recalc = &omap2_clksel_recalc,
+ .recalc = &followparent_recalc,
};
static struct clk cam_ick = {
@@ -2209,7 +2088,7 @@ static struct clk csi2_96m_fck = {
static struct clk usbhost_120m_fck = {
.name = "usbhost_120m_fck",
.ops = &clkops_omap2_dflt_wait,
- .parent = &omap_120m_fck,
+ .parent = &dpll5_m2_ck,
.init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430ES2_USBHOST_MOD, CM_FCLKEN),
.enable_bit = OMAP3430ES2_EN_USBHOST2_SHIFT,
@@ -2260,7 +2139,7 @@ static const struct clksel_rate usim_120m_rates[] = {
static const struct clksel usim_clksel[] = {
{ .parent = &omap_96m_fck, .rates = usim_96m_rates },
- { .parent = &omap_120m_fck, .rates = usim_120m_rates },
+ { .parent = &dpll5_m2_ck, .rates = usim_120m_rates },
{ .parent = &sys_ck, .rates = div2_rates },
{ .parent = NULL },
};
@@ -29,7 +29,7 @@
#include <mach/sram.h>
#include "prm.h"
-
+#include "clock.h"
#include <mach/sdrc.h>
#include "sdrc.h"
@@ -39,6 +39,10 @@ struct dpll_data {
void __iomem *mult_div1_reg;
u32 mult_mask;
u32 div1_mask;
+ struct clk *clk_bypass;
+ struct clk *clk_ref;
+ void __iomem *control_reg;
+ u32 enable_mask;
unsigned int rate_tolerance;
unsigned long last_rounded_rate;
u16 last_rounded_m;
@@ -49,10 +53,8 @@ struct dpll_data {
u16 max_multiplier;
# if defined(CONFIG_ARCH_OMAP3)
u8 modes;
- void __iomem *control_reg;
void __iomem *autoidle_reg;
void __iomem *idlest_reg;
- u32 enable_mask;
u32 autoidle_mask;
u32 freqsel_mask;
u32 idlest_mask;
@@ -154,9 +156,4 @@ extern const struct clkops clkops_null;
#define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X)
-/* CM_CLKSEL2_PLL.CORE_CLK_SRC options (24XX) */
-#define CORE_CLK_SRC_32K 0
-#define CORE_CLK_SRC_DPLL 1
-#define CORE_CLK_SRC_DPLL_X2 2
-
#endif