summaryrefslogtreecommitdiff
path: root/drivers/clk/at91
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/clk/at91')
-rw-r--r--drivers/clk/at91/clk-audio-pll.c42
-rw-r--r--drivers/clk/at91/clk-h32mx.c33
-rw-r--r--drivers/clk/at91/clk-master.c3
-rw-r--r--drivers/clk/at91/clk-peripheral.c48
-rw-r--r--drivers/clk/at91/clk-pll.c12
-rw-r--r--drivers/clk/at91/clk-plldiv.c34
-rw-r--r--drivers/clk/at91/clk-sam9x60-pll.c111
-rw-r--r--drivers/clk/at91/clk-usb.c20
-rw-r--r--drivers/clk/at91/pmc.h1
-rw-r--r--drivers/clk/at91/sam9x60.c2
-rw-r--r--drivers/clk/at91/sam9x7.c6
-rw-r--r--drivers/clk/at91/sama7d65.c4
-rw-r--r--drivers/clk/at91/sama7g5.c2
13 files changed, 192 insertions, 126 deletions
diff --git a/drivers/clk/at91/clk-audio-pll.c b/drivers/clk/at91/clk-audio-pll.c
index a92da64c12e1..bf9b635ac9d6 100644
--- a/drivers/clk/at91/clk-audio-pll.c
+++ b/drivers/clk/at91/clk-audio-pll.c
@@ -270,8 +270,8 @@ static int clk_audio_pll_frac_determine_rate(struct clk_hw *hw,
return 0;
}
-static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int clk_audio_pll_pad_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct clk_hw *pclk = clk_hw_get_parent(hw);
long best_rate = -EINVAL;
@@ -283,7 +283,7 @@ static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,
int best_diff = -1;
pr_debug("A PLL/PAD: %s, rate = %lu (parent_rate = %lu)\n", __func__,
- rate, *parent_rate);
+ req->rate, req->best_parent_rate);
/*
* Rate divisor is actually made of two different divisors, multiplied
@@ -304,12 +304,12 @@ static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,
continue;
best_parent_rate = clk_hw_round_rate(pclk,
- rate * tmp_qd * div);
+ req->rate * tmp_qd * div);
tmp_rate = best_parent_rate / (div * tmp_qd);
- tmp_diff = abs(rate - tmp_rate);
+ tmp_diff = abs(req->rate - tmp_rate);
if (best_diff < 0 || best_diff > tmp_diff) {
- *parent_rate = best_parent_rate;
+ req->best_parent_rate = best_parent_rate;
best_rate = tmp_rate;
best_diff = tmp_diff;
}
@@ -318,11 +318,13 @@ static long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long rate,
pr_debug("A PLL/PAD: %s, best_rate = %ld, best_parent_rate = %lu\n",
__func__, best_rate, best_parent_rate);
- return best_rate;
+ req->rate = best_rate;
+
+ return 0;
}
-static long clk_audio_pll_pmc_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int clk_audio_pll_pmc_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct clk_hw *pclk = clk_hw_get_parent(hw);
long best_rate = -EINVAL;
@@ -333,20 +335,20 @@ static long clk_audio_pll_pmc_round_rate(struct clk_hw *hw, unsigned long rate,
int best_diff = -1;
pr_debug("A PLL/PMC: %s, rate = %lu (parent_rate = %lu)\n", __func__,
- rate, *parent_rate);
+ req->rate, req->best_parent_rate);
- if (!rate)
+ if (!req->rate)
return 0;
best_parent_rate = clk_round_rate(pclk->clk, 1);
- div = max(best_parent_rate / rate, 1UL);
+ div = max(best_parent_rate / req->rate, 1UL);
for (; div <= AUDIO_PLL_QDPMC_MAX; div++) {
- best_parent_rate = clk_round_rate(pclk->clk, rate * div);
+ best_parent_rate = clk_round_rate(pclk->clk, req->rate * div);
tmp_rate = best_parent_rate / div;
- tmp_diff = abs(rate - tmp_rate);
+ tmp_diff = abs(req->rate - tmp_rate);
if (best_diff < 0 || best_diff > tmp_diff) {
- *parent_rate = best_parent_rate;
+ req->best_parent_rate = best_parent_rate;
best_rate = tmp_rate;
best_diff = tmp_diff;
tmp_qd = div;
@@ -356,9 +358,11 @@ static long clk_audio_pll_pmc_round_rate(struct clk_hw *hw, unsigned long rate,
}
pr_debug("A PLL/PMC: %s, best_rate = %ld, best_parent_rate = %lu (qd = %d)\n",
- __func__, best_rate, *parent_rate, tmp_qd - 1);
+ __func__, best_rate, req->best_parent_rate, tmp_qd - 1);
+
+ req->rate = best_rate;
- return best_rate;
+ return 0;
}
static int clk_audio_pll_frac_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -436,7 +440,7 @@ static const struct clk_ops audio_pll_pad_ops = {
.enable = clk_audio_pll_pad_enable,
.disable = clk_audio_pll_pad_disable,
.recalc_rate = clk_audio_pll_pad_recalc_rate,
- .round_rate = clk_audio_pll_pad_round_rate,
+ .determine_rate = clk_audio_pll_pad_determine_rate,
.set_rate = clk_audio_pll_pad_set_rate,
};
@@ -444,7 +448,7 @@ static const struct clk_ops audio_pll_pmc_ops = {
.enable = clk_audio_pll_pmc_enable,
.disable = clk_audio_pll_pmc_disable,
.recalc_rate = clk_audio_pll_pmc_recalc_rate,
- .round_rate = clk_audio_pll_pmc_round_rate,
+ .determine_rate = clk_audio_pll_pmc_determine_rate,
.set_rate = clk_audio_pll_pmc_set_rate,
};
diff --git a/drivers/clk/at91/clk-h32mx.c b/drivers/clk/at91/clk-h32mx.c
index 1e6c12eeda10..a9aa93b5a870 100644
--- a/drivers/clk/at91/clk-h32mx.c
+++ b/drivers/clk/at91/clk-h32mx.c
@@ -40,21 +40,32 @@ static unsigned long clk_sama5d4_h32mx_recalc_rate(struct clk_hw *hw,
return parent_rate;
}
-static long clk_sama5d4_h32mx_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int clk_sama5d4_h32mx_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
unsigned long div;
- if (rate > *parent_rate)
- return *parent_rate;
- div = *parent_rate / 2;
- if (rate < div)
- return div;
+ if (req->rate > req->best_parent_rate) {
+ req->rate = req->best_parent_rate;
- if (rate - div < *parent_rate - rate)
- return div;
+ return 0;
+ }
+ div = req->best_parent_rate / 2;
+ if (req->rate < div) {
+ req->rate = div;
+
+ return 0;
+ }
+
+ if (req->rate - div < req->best_parent_rate - req->rate) {
+ req->rate = div;
- return *parent_rate;
+ return 0;
+ }
+
+ req->rate = req->best_parent_rate;
+
+ return 0;
}
static int clk_sama5d4_h32mx_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -77,7 +88,7 @@ static int clk_sama5d4_h32mx_set_rate(struct clk_hw *hw, unsigned long rate,
static const struct clk_ops h32mx_ops = {
.recalc_rate = clk_sama5d4_h32mx_recalc_rate,
- .round_rate = clk_sama5d4_h32mx_round_rate,
+ .determine_rate = clk_sama5d4_h32mx_determine_rate,
.set_rate = clk_sama5d4_h32mx_set_rate,
};
diff --git a/drivers/clk/at91/clk-master.c b/drivers/clk/at91/clk-master.c
index 7a544e429d34..d5ea2069ec83 100644
--- a/drivers/clk/at91/clk-master.c
+++ b/drivers/clk/at91/clk-master.c
@@ -580,6 +580,9 @@ clk_sama7g5_master_recalc_rate(struct clk_hw *hw,
{
struct clk_master *master = to_clk_master(hw);
+ if (master->div == MASTER_PRES_MAX)
+ return DIV_ROUND_CLOSEST_ULL(parent_rate, 3);
+
return DIV_ROUND_CLOSEST_ULL(parent_rate, (1 << master->div));
}
diff --git a/drivers/clk/at91/clk-peripheral.c b/drivers/clk/at91/clk-peripheral.c
index c173a44c800a..e700f40fd87f 100644
--- a/drivers/clk/at91/clk-peripheral.c
+++ b/drivers/clk/at91/clk-peripheral.c
@@ -279,8 +279,11 @@ static int clk_sam9x5_peripheral_determine_rate(struct clk_hw *hw,
long best_diff = LONG_MIN;
u32 shift;
- if (periph->id < PERIPHERAL_ID_MIN || !periph->range.max)
- return parent_rate;
+ if (periph->id < PERIPHERAL_ID_MIN || !periph->range.max) {
+ req->rate = parent_rate;
+
+ return 0;
+ }
/* Fist step: check the available dividers. */
for (shift = 0; shift <= PERIPHERAL_MAX_SHIFT; shift++) {
@@ -332,50 +335,57 @@ end:
return 0;
}
-static long clk_sam9x5_peripheral_round_rate(struct clk_hw *hw,
- unsigned long rate,
- unsigned long *parent_rate)
+static int clk_sam9x5_peripheral_no_parent_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
int shift = 0;
unsigned long best_rate;
unsigned long best_diff;
- unsigned long cur_rate = *parent_rate;
+ unsigned long cur_rate = req->best_parent_rate;
unsigned long cur_diff;
struct clk_sam9x5_peripheral *periph = to_clk_sam9x5_peripheral(hw);
- if (periph->id < PERIPHERAL_ID_MIN || !periph->range.max)
- return *parent_rate;
+ if (periph->id < PERIPHERAL_ID_MIN || !periph->range.max) {
+ req->rate = req->best_parent_rate;
+
+ return 0;
+ }
if (periph->range.max) {
for (; shift <= PERIPHERAL_MAX_SHIFT; shift++) {
- cur_rate = *parent_rate >> shift;
+ cur_rate = req->best_parent_rate >> shift;
if (cur_rate <= periph->range.max)
break;
}
}
- if (rate >= cur_rate)
- return cur_rate;
+ if (req->rate >= cur_rate) {
+ req->rate = cur_rate;
+
+ return 0;
+ }
- best_diff = cur_rate - rate;
+ best_diff = cur_rate - req->rate;
best_rate = cur_rate;
for (; shift <= PERIPHERAL_MAX_SHIFT; shift++) {
- cur_rate = *parent_rate >> shift;
- if (cur_rate < rate)
- cur_diff = rate - cur_rate;
+ cur_rate = req->best_parent_rate >> shift;
+ if (cur_rate < req->rate)
+ cur_diff = req->rate - cur_rate;
else
- cur_diff = cur_rate - rate;
+ cur_diff = cur_rate - req->rate;
if (cur_diff < best_diff) {
best_diff = cur_diff;
best_rate = cur_rate;
}
- if (!best_diff || cur_rate < rate)
+ if (!best_diff || cur_rate < req->rate)
break;
}
- return best_rate;
+ req->rate = best_rate;
+
+ return 0;
}
static int clk_sam9x5_peripheral_set_rate(struct clk_hw *hw,
@@ -427,7 +437,7 @@ static const struct clk_ops sam9x5_peripheral_ops = {
.disable = clk_sam9x5_peripheral_disable,
.is_enabled = clk_sam9x5_peripheral_is_enabled,
.recalc_rate = clk_sam9x5_peripheral_recalc_rate,
- .round_rate = clk_sam9x5_peripheral_round_rate,
+ .determine_rate = clk_sam9x5_peripheral_no_parent_determine_rate,
.set_rate = clk_sam9x5_peripheral_set_rate,
.save_context = clk_sam9x5_peripheral_save_context,
.restore_context = clk_sam9x5_peripheral_restore_context,
diff --git a/drivers/clk/at91/clk-pll.c b/drivers/clk/at91/clk-pll.c
index 249d6a53cedf..5c5f7398effe 100644
--- a/drivers/clk/at91/clk-pll.c
+++ b/drivers/clk/at91/clk-pll.c
@@ -231,13 +231,15 @@ static long clk_pll_get_best_div_mul(struct clk_pll *pll, unsigned long rate,
return bestrate;
}
-static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int clk_pll_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct clk_pll *pll = to_clk_pll(hw);
- return clk_pll_get_best_div_mul(pll, rate, *parent_rate,
- NULL, NULL, NULL);
+ req->rate = clk_pll_get_best_div_mul(pll, req->rate, req->best_parent_rate,
+ NULL, NULL, NULL);
+
+ return 0;
}
static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -302,7 +304,7 @@ static const struct clk_ops pll_ops = {
.unprepare = clk_pll_unprepare,
.is_prepared = clk_pll_is_prepared,
.recalc_rate = clk_pll_recalc_rate,
- .round_rate = clk_pll_round_rate,
+ .determine_rate = clk_pll_determine_rate,
.set_rate = clk_pll_set_rate,
.save_context = clk_pll_save_context,
.restore_context = clk_pll_restore_context,
diff --git a/drivers/clk/at91/clk-plldiv.c b/drivers/clk/at91/clk-plldiv.c
index ba3a1839a96d..3ac09fecc54e 100644
--- a/drivers/clk/at91/clk-plldiv.c
+++ b/drivers/clk/at91/clk-plldiv.c
@@ -33,21 +33,33 @@ static unsigned long clk_plldiv_recalc_rate(struct clk_hw *hw,
return parent_rate;
}
-static long clk_plldiv_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int clk_plldiv_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
unsigned long div;
- if (rate > *parent_rate)
- return *parent_rate;
- div = *parent_rate / 2;
- if (rate < div)
- return div;
+ if (req->rate > req->best_parent_rate) {
+ req->rate = req->best_parent_rate;
- if (rate - div < *parent_rate - rate)
- return div;
+ return 0;
+ }
+
+ div = req->best_parent_rate / 2;
+ if (req->rate < div) {
+ req->rate = div;
+
+ return 0;
+ }
+
+ if (req->rate - div < req->best_parent_rate - req->rate) {
+ req->rate = div;
- return *parent_rate;
+ return 0;
+ }
+
+ req->rate = req->best_parent_rate;
+
+ return 0;
}
static int clk_plldiv_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -66,7 +78,7 @@ static int clk_plldiv_set_rate(struct clk_hw *hw, unsigned long rate,
static const struct clk_ops plldiv_ops = {
.recalc_rate = clk_plldiv_recalc_rate,
- .round_rate = clk_plldiv_round_rate,
+ .determine_rate = clk_plldiv_determine_rate,
.set_rate = clk_plldiv_set_rate,
};
diff --git a/drivers/clk/at91/clk-sam9x60-pll.c b/drivers/clk/at91/clk-sam9x60-pll.c
index cefd9948e103..3b965057ba0d 100644
--- a/drivers/clk/at91/clk-sam9x60-pll.c
+++ b/drivers/clk/at91/clk-sam9x60-pll.c
@@ -93,8 +93,8 @@ static int sam9x60_frac_pll_set(struct sam9x60_pll_core *core)
spin_lock_irqsave(core->lock, flags);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_ID_MSK, core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_ID_MSK, core->id);
regmap_read(regmap, AT91_PMC_PLL_CTRL1, &val);
cmul = (val & core->layout->mul_mask) >> core->layout->mul_shift;
cfrac = (val & core->layout->frac_mask) >> core->layout->frac_shift;
@@ -103,11 +103,8 @@ static int sam9x60_frac_pll_set(struct sam9x60_pll_core *core)
(cmul == frac->mul && cfrac == frac->frac))
goto unlock;
- /* Recommended value for PMC_PLL_ACR */
- if (core->characteristics->upll)
- val = AT91_PMC_PLL_ACR_DEFAULT_UPLL;
- else
- val = AT91_PMC_PLL_ACR_DEFAULT_PLLA;
+ /* Load recommended value for PMC_PLL_ACR */
+ val = core->characteristics->acr;
regmap_write(regmap, AT91_PMC_PLL_ACR, val);
regmap_write(regmap, AT91_PMC_PLL_CTRL1,
@@ -128,17 +125,17 @@ static int sam9x60_frac_pll_set(struct sam9x60_pll_core *core)
udelay(10);
}
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
- AT91_PMC_PLL_UPDT_UPDATE | core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
regmap_update_bits(regmap, AT91_PMC_PLL_CTRL0,
AT91_PMC_PLL_CTRL0_ENLOCK | AT91_PMC_PLL_CTRL0_ENPLL,
AT91_PMC_PLL_CTRL0_ENLOCK | AT91_PMC_PLL_CTRL0_ENPLL);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
- AT91_PMC_PLL_UPDT_UPDATE | core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
while (!sam9x60_pll_ready(regmap, core->id))
cpu_relax();
@@ -164,8 +161,8 @@ static void sam9x60_frac_pll_unprepare(struct clk_hw *hw)
spin_lock_irqsave(core->lock, flags);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_ID_MSK, core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_ID_MSK, core->id);
regmap_update_bits(regmap, AT91_PMC_PLL_CTRL0, AT91_PMC_PLL_CTRL0_ENPLL, 0);
@@ -173,9 +170,9 @@ static void sam9x60_frac_pll_unprepare(struct clk_hw *hw)
regmap_update_bits(regmap, AT91_PMC_PLL_ACR,
AT91_PMC_PLL_ACR_UTMIBG | AT91_PMC_PLL_ACR_UTMIVR, 0);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
- AT91_PMC_PLL_UPDT_UPDATE | core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
spin_unlock_irqrestore(core->lock, flags);
}
@@ -230,12 +227,16 @@ static long sam9x60_frac_pll_compute_mul_frac(struct sam9x60_pll_core *core,
return tmprate;
}
-static long sam9x60_frac_pll_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int sam9x60_frac_pll_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct sam9x60_pll_core *core = to_sam9x60_pll_core(hw);
- return sam9x60_frac_pll_compute_mul_frac(core, rate, *parent_rate, false);
+ req->rate = sam9x60_frac_pll_compute_mul_frac(core, req->rate,
+ req->best_parent_rate,
+ false);
+
+ return 0;
}
static int sam9x60_frac_pll_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -262,8 +263,8 @@ static int sam9x60_frac_pll_set_rate_chg(struct clk_hw *hw, unsigned long rate,
spin_lock_irqsave(core->lock, irqflags);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
- core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ core->id);
regmap_read(regmap, AT91_PMC_PLL_CTRL1, &val);
cmul = (val & core->layout->mul_mask) >> core->layout->mul_shift;
cfrac = (val & core->layout->frac_mask) >> core->layout->frac_shift;
@@ -275,18 +276,18 @@ static int sam9x60_frac_pll_set_rate_chg(struct clk_hw *hw, unsigned long rate,
(frac->mul << core->layout->mul_shift) |
(frac->frac << core->layout->frac_shift));
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
- AT91_PMC_PLL_UPDT_UPDATE | core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
regmap_update_bits(regmap, AT91_PMC_PLL_CTRL0,
AT91_PMC_PLL_CTRL0_ENLOCK | AT91_PMC_PLL_CTRL0_ENPLL,
AT91_PMC_PLL_CTRL0_ENLOCK |
AT91_PMC_PLL_CTRL0_ENPLL);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
- AT91_PMC_PLL_UPDT_UPDATE | core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
while (!sam9x60_pll_ready(regmap, core->id))
cpu_relax();
@@ -321,7 +322,7 @@ static const struct clk_ops sam9x60_frac_pll_ops = {
.unprepare = sam9x60_frac_pll_unprepare,
.is_prepared = sam9x60_frac_pll_is_prepared,
.recalc_rate = sam9x60_frac_pll_recalc_rate,
- .round_rate = sam9x60_frac_pll_round_rate,
+ .determine_rate = sam9x60_frac_pll_determine_rate,
.set_rate = sam9x60_frac_pll_set_rate,
.save_context = sam9x60_frac_pll_save_context,
.restore_context = sam9x60_frac_pll_restore_context,
@@ -332,13 +333,16 @@ static const struct clk_ops sam9x60_frac_pll_ops_chg = {
.unprepare = sam9x60_frac_pll_unprepare,
.is_prepared = sam9x60_frac_pll_is_prepared,
.recalc_rate = sam9x60_frac_pll_recalc_rate,
- .round_rate = sam9x60_frac_pll_round_rate,
+ .determine_rate = sam9x60_frac_pll_determine_rate,
.set_rate = sam9x60_frac_pll_set_rate_chg,
.save_context = sam9x60_frac_pll_save_context,
.restore_context = sam9x60_frac_pll_restore_context,
};
-/* This function should be called with spinlock acquired. */
+/* This function should be called with spinlock acquired.
+ * Warning: this function must be called only if the same PLL ID was set in
+ * PLL_UPDT register previously.
+ */
static void sam9x60_div_pll_set_div(struct sam9x60_pll_core *core, u32 div,
bool enable)
{
@@ -350,9 +354,9 @@ static void sam9x60_div_pll_set_div(struct sam9x60_pll_core *core, u32 div,
core->layout->div_mask | ena_msk,
(div << core->layout->div_shift) | ena_val);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
- AT91_PMC_PLL_UPDT_UPDATE | core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
while (!sam9x60_pll_ready(regmap, core->id))
cpu_relax();
@@ -366,8 +370,8 @@ static int sam9x60_div_pll_set(struct sam9x60_pll_core *core)
unsigned int val, cdiv;
spin_lock_irqsave(core->lock, flags);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_ID_MSK, core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_ID_MSK, core->id);
regmap_read(regmap, AT91_PMC_PLL_CTRL0, &val);
cdiv = (val & core->layout->div_mask) >> core->layout->div_shift;
@@ -398,15 +402,15 @@ static void sam9x60_div_pll_unprepare(struct clk_hw *hw)
spin_lock_irqsave(core->lock, flags);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_ID_MSK, core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_ID_MSK, core->id);
regmap_update_bits(regmap, AT91_PMC_PLL_CTRL0,
core->layout->endiv_mask, 0);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT,
- AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
- AT91_PMC_PLL_UPDT_UPDATE | core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT,
+ AT91_PMC_PLL_UPDT_UPDATE | AT91_PMC_PLL_UPDT_ID_MSK,
+ AT91_PMC_PLL_UPDT_UPDATE | core->id);
spin_unlock_irqrestore(core->lock, flags);
}
@@ -487,12 +491,15 @@ static long sam9x60_div_pll_compute_div(struct sam9x60_pll_core *core,
return best_rate;
}
-static long sam9x60_div_pll_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int sam9x60_div_pll_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct sam9x60_pll_core *core = to_sam9x60_pll_core(hw);
- return sam9x60_div_pll_compute_div(core, parent_rate, rate);
+ req->rate = sam9x60_div_pll_compute_div(core, &req->best_parent_rate,
+ req->rate);
+
+ return 0;
}
static int sam9x60_div_pll_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -518,8 +525,8 @@ static int sam9x60_div_pll_set_rate_chg(struct clk_hw *hw, unsigned long rate,
div->div = DIV_ROUND_CLOSEST(parent_rate, rate) - 1;
spin_lock_irqsave(core->lock, irqflags);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
- core->id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ core->id);
regmap_read(regmap, AT91_PMC_PLL_CTRL0, &val);
cdiv = (val & core->layout->div_mask) >> core->layout->div_shift;
@@ -574,8 +581,8 @@ static int sam9x60_div_pll_notifier_fn(struct notifier_block *notifier,
div->div = div->safe_div;
spin_lock_irqsave(core.lock, irqflags);
- regmap_update_bits(regmap, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
- core.id);
+ regmap_write_bits(regmap, AT91_PMC_PLL_UPDT, AT91_PMC_PLL_UPDT_ID_MSK,
+ core.id);
regmap_read(regmap, AT91_PMC_PLL_CTRL0, &val);
cdiv = (val & core.layout->div_mask) >> core.layout->div_shift;
@@ -601,7 +608,7 @@ static const struct clk_ops sam9x60_div_pll_ops = {
.unprepare = sam9x60_div_pll_unprepare,
.is_prepared = sam9x60_div_pll_is_prepared,
.recalc_rate = sam9x60_div_pll_recalc_rate,
- .round_rate = sam9x60_div_pll_round_rate,
+ .determine_rate = sam9x60_div_pll_determine_rate,
.set_rate = sam9x60_div_pll_set_rate,
.save_context = sam9x60_div_pll_save_context,
.restore_context = sam9x60_div_pll_restore_context,
@@ -612,7 +619,7 @@ static const struct clk_ops sam9x60_div_pll_ops_chg = {
.unprepare = sam9x60_div_pll_unprepare,
.is_prepared = sam9x60_div_pll_is_prepared,
.recalc_rate = sam9x60_div_pll_recalc_rate,
- .round_rate = sam9x60_div_pll_round_rate,
+ .determine_rate = sam9x60_div_pll_determine_rate,
.set_rate = sam9x60_div_pll_set_rate_chg,
.save_context = sam9x60_div_pll_save_context,
.restore_context = sam9x60_div_pll_restore_context,
@@ -623,7 +630,7 @@ static const struct clk_ops sam9x60_fixed_div_pll_ops = {
.unprepare = sam9x60_div_pll_unprepare,
.is_prepared = sam9x60_div_pll_is_prepared,
.recalc_rate = sam9x60_fixed_div_pll_recalc_rate,
- .round_rate = sam9x60_div_pll_round_rate,
+ .determine_rate = sam9x60_div_pll_determine_rate,
.save_context = sam9x60_div_pll_save_context,
.restore_context = sam9x60_div_pll_restore_context,
};
diff --git a/drivers/clk/at91/clk-usb.c b/drivers/clk/at91/clk-usb.c
index b0696a928aa9..e906928cfbf0 100644
--- a/drivers/clk/at91/clk-usb.c
+++ b/drivers/clk/at91/clk-usb.c
@@ -319,8 +319,8 @@ static unsigned long at91rm9200_clk_usb_recalc_rate(struct clk_hw *hw,
return 0;
}
-static long at91rm9200_clk_usb_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int at91rm9200_clk_usb_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
struct at91rm9200_clk_usb *usb = to_at91rm9200_clk_usb(hw);
struct clk_hw *parent = clk_hw_get_parent(hw);
@@ -336,25 +336,27 @@ static long at91rm9200_clk_usb_round_rate(struct clk_hw *hw, unsigned long rate,
if (!usb->divisors[i])
continue;
- tmp_parent_rate = rate * usb->divisors[i];
+ tmp_parent_rate = req->rate * usb->divisors[i];
tmp_parent_rate = clk_hw_round_rate(parent, tmp_parent_rate);
tmprate = DIV_ROUND_CLOSEST(tmp_parent_rate, usb->divisors[i]);
- if (tmprate < rate)
- tmpdiff = rate - tmprate;
+ if (tmprate < req->rate)
+ tmpdiff = req->rate - tmprate;
else
- tmpdiff = tmprate - rate;
+ tmpdiff = tmprate - req->rate;
if (bestdiff < 0 || bestdiff > tmpdiff) {
bestrate = tmprate;
bestdiff = tmpdiff;
- *parent_rate = tmp_parent_rate;
+ req->best_parent_rate = tmp_parent_rate;
}
if (!bestdiff)
break;
}
- return bestrate;
+ req->rate = bestrate;
+
+ return 0;
}
static int at91rm9200_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -384,7 +386,7 @@ static int at91rm9200_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
static const struct clk_ops at91rm9200_usb_ops = {
.recalc_rate = at91rm9200_clk_usb_recalc_rate,
- .round_rate = at91rm9200_clk_usb_round_rate,
+ .determine_rate = at91rm9200_clk_usb_determine_rate,
.set_rate = at91rm9200_clk_usb_set_rate,
};
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 4fb29ca111f7..5daa32c4cf25 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -80,6 +80,7 @@ struct clk_pll_characteristics {
u16 *icpll;
u8 *out;
u8 upll : 1;
+ u32 acr;
};
struct clk_programmable_layout {
diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index db6db9e2073e..18baf4a256f4 100644
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -36,6 +36,7 @@ static const struct clk_pll_characteristics plla_characteristics = {
.num_output = ARRAY_SIZE(plla_outputs),
.output = plla_outputs,
.core_output = core_outputs,
+ .acr = UL(0x00020010),
};
static const struct clk_range upll_outputs[] = {
@@ -48,6 +49,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
.output = upll_outputs,
.core_output = core_outputs,
.upll = true,
+ .acr = UL(0x12023010), /* fIN = [18 MHz, 32 MHz]*/
};
static const struct clk_pll_layout pll_frac_layout = {
diff --git a/drivers/clk/at91/sam9x7.c b/drivers/clk/at91/sam9x7.c
index ffab32b047a0..89868a0aeaba 100644
--- a/drivers/clk/at91/sam9x7.c
+++ b/drivers/clk/at91/sam9x7.c
@@ -107,6 +107,7 @@ static const struct clk_pll_characteristics plla_characteristics = {
.num_output = ARRAY_SIZE(plla_outputs),
.output = plla_outputs,
.core_output = plla_core_outputs,
+ .acr = UL(0x00020010), /* Old ACR_DEFAULT_PLLA value */
};
static const struct clk_pll_characteristics upll_characteristics = {
@@ -115,6 +116,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
.output = upll_outputs,
.core_output = upll_core_outputs,
.upll = true,
+ .acr = UL(0x12023010), /* fIN=[20 MHz, 32 MHz] */
};
static const struct clk_pll_characteristics lvdspll_characteristics = {
@@ -122,6 +124,7 @@ static const struct clk_pll_characteristics lvdspll_characteristics = {
.num_output = ARRAY_SIZE(lvdspll_outputs),
.output = lvdspll_outputs,
.core_output = lvdspll_core_outputs,
+ .acr = UL(0x12023010), /* fIN=[20 MHz, 32 MHz] */
};
static const struct clk_pll_characteristics audiopll_characteristics = {
@@ -129,6 +132,7 @@ static const struct clk_pll_characteristics audiopll_characteristics = {
.num_output = ARRAY_SIZE(audiopll_outputs),
.output = audiopll_outputs,
.core_output = audiopll_core_outputs,
+ .acr = UL(0x12023010), /* fIN=[20 MHz, 32 MHz] */
};
static const struct clk_pll_characteristics plladiv2_characteristics = {
@@ -136,6 +140,7 @@ static const struct clk_pll_characteristics plladiv2_characteristics = {
.num_output = ARRAY_SIZE(plladiv2_outputs),
.output = plladiv2_outputs,
.core_output = plladiv2_core_outputs,
+ .acr = UL(0x00020010), /* Old ACR_DEFAULT_PLLA value */
};
/* Layout for fractional PLL ID PLLA. */
@@ -403,6 +408,7 @@ static const struct {
{ .n = "pioD_clk", .id = 44, },
{ .n = "tcb1_clk", .id = 45, },
{ .n = "dbgu_clk", .id = 47, },
+ { .n = "pmecc_clk", .id = 48, },
/*
* mpddr_clk feeds DDR controller and is enabled by bootloader thus we
* need to keep it enabled in case there is no Linux consumer for it.
diff --git a/drivers/clk/at91/sama7d65.c b/drivers/clk/at91/sama7d65.c
index a5d40df8b2f2..7dee2b160ffb 100644
--- a/drivers/clk/at91/sama7d65.c
+++ b/drivers/clk/at91/sama7d65.c
@@ -138,6 +138,7 @@ static const struct clk_pll_characteristics cpu_pll_characteristics = {
.num_output = ARRAY_SIZE(cpu_pll_outputs),
.output = cpu_pll_outputs,
.core_output = core_outputs,
+ .acr = UL(0x00070010),
};
/* PLL characteristics. */
@@ -146,6 +147,7 @@ static const struct clk_pll_characteristics pll_characteristics = {
.num_output = ARRAY_SIZE(pll_outputs),
.output = pll_outputs,
.core_output = core_outputs,
+ .acr = UL(0x00070010),
};
static const struct clk_pll_characteristics lvdspll_characteristics = {
@@ -153,6 +155,7 @@ static const struct clk_pll_characteristics lvdspll_characteristics = {
.num_output = ARRAY_SIZE(lvdspll_outputs),
.output = lvdspll_outputs,
.core_output = lvdspll_core_outputs,
+ .acr = UL(0x00070010),
};
static const struct clk_pll_characteristics upll_characteristics = {
@@ -160,6 +163,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
.num_output = ARRAY_SIZE(upll_outputs),
.output = upll_outputs,
.core_output = upll_core_outputs,
+ .acr = UL(0x12020010),
.upll = true,
};
diff --git a/drivers/clk/at91/sama7g5.c b/drivers/clk/at91/sama7g5.c
index 8385badc1c70..1340c2b00619 100644
--- a/drivers/clk/at91/sama7g5.c
+++ b/drivers/clk/at91/sama7g5.c
@@ -113,6 +113,7 @@ static const struct clk_pll_characteristics cpu_pll_characteristics = {
.num_output = ARRAY_SIZE(cpu_pll_outputs),
.output = cpu_pll_outputs,
.core_output = core_outputs,
+ .acr = UL(0x00070010),
};
/* PLL characteristics. */
@@ -121,6 +122,7 @@ static const struct clk_pll_characteristics pll_characteristics = {
.num_output = ARRAY_SIZE(pll_outputs),
.output = pll_outputs,
.core_output = core_outputs,
+ .acr = UL(0x00070010),
};
/*
generated by cgit (git 2.34.1) at 2025-10-08 13:00:36 +0000