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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 11:54:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 11:54:50 -0700
commit92295f632cefbdf15d46e9ac5f0fc3cfade35259 (patch)
tree5b3820d4ed135ccbef540781d99a46137959bbb6 /drivers/clk/tegra
parent750b2d7b93f2ba19f4f238cc641bda22fe07c155 (diff)
parent45e3ec3784aec0d194740b75b547bfabca448ff3 (diff)
Merge tag 'clk-for-linus-3.11' of git://git.linaro.org/people/mturquette/linux
Pull clock framework updates from Mike Turquette: "The common clock framework changes for 3.11 include new clock drivers across several different platforms and architectures, fixes to existing drivers, a MAINTAINERS file fix and improvements to the basic clock types that allow them to be of use to more platforms than before. Only a few fixes to the core framework are included with most all of the changes landing in the various clock drivers themselves." * tag 'clk-for-linus-3.11' of git://git.linaro.org/people/mturquette/linux: (55 commits) clk: tegra: fix ifdef for tegra_periph_reset_assert inline clk: tegra: provide tegra_periph_reset_assert alternative clk: exynos4: Fix clock aliases for cpufreq related clocks clk: samsung: Add MUX_FA macro to pass flag and alias clk: add support for Rockchip gate clocks clk: vexpress: Make the clock drivers directly available for arm64 clk: vexpress: Use full node name to identify individual clocks clk: tegra: T114: add DFLL DVCO reset control clk: tegra: T114: add DFLL source clocks clk: tegra: T114: add FCPU clock shaper programming, needed by the DFLL clk: gate: add CLK_GATE_HIWORD_MASK clk: divider: add CLK_DIVIDER_HIWORD_MASK flag clk: mux: add CLK_MUX_HIWORD_MASK clk: Always notify whole subtree when reparenting MAINTAINERS: make drivers/clk entry match subdirs clk: honor CLK_GET_RATE_NOCACHE in clk_set_rate clk: use clk_get_rate() for debugfs clk: tegra: Use override bits when needed clk: tegra: override bits for Tegra30 PLLM clk: tegra: override bits for Tegra114 PLLM ...
Diffstat (limited to 'drivers/clk/tegra')
-rw-r--r--drivers/clk/tegra/clk-pll.c281
-rw-r--r--drivers/clk/tegra/clk-tegra114.c270
-rw-r--r--drivers/clk/tegra/clk-tegra20.c3
-rw-r--r--drivers/clk/tegra/clk-tegra30.c25
-rw-r--r--drivers/clk/tegra/clk.c12
-rw-r--r--drivers/clk/tegra/clk.h62
6 files changed, 472 insertions, 181 deletions
diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
index 17c2cc086eb4..197074a57754 100644
--- a/drivers/clk/tegra/clk-pll.c
+++ b/drivers/clk/tegra/clk-pll.c
@@ -117,10 +117,6 @@
#define PLLCX_MISC2_DEFAULT 0x30211200
#define PLLCX_MISC3_DEFAULT 0x200
-#define PMC_PLLM_WB0_OVERRIDE 0x1dc
-#define PMC_PLLM_WB0_OVERRIDE_2 0x2b0
-#define PMC_PLLM_WB0_OVERRIDE_2_DIVP_MASK BIT(27)
-
#define PMC_SATA_PWRGT 0x1ac
#define PMC_SATA_PWRGT_PLLE_IDDQ_VALUE BIT(5)
#define PMC_SATA_PWRGT_PLLE_IDDQ_SWCTL BIT(4)
@@ -128,38 +124,31 @@
#define pll_readl(offset, p) readl_relaxed(p->clk_base + offset)
#define pll_readl_base(p) pll_readl(p->params->base_reg, p)
#define pll_readl_misc(p) pll_readl(p->params->misc_reg, p)
+#define pll_override_readl(offset, p) readl_relaxed(p->pmc + offset)
#define pll_writel(val, offset, p) writel_relaxed(val, p->clk_base + offset)
#define pll_writel_base(val, p) pll_writel(val, p->params->base_reg, p)
#define pll_writel_misc(val, p) pll_writel(val, p->params->misc_reg, p)
+#define pll_override_writel(val, offset, p) writel(val, p->pmc + offset)
#define mask(w) ((1 << (w)) - 1)
-#define divm_mask(p) mask(p->divm_width)
-#define divn_mask(p) mask(p->divn_width)
+#define divm_mask(p) mask(p->params->div_nmp->divm_width)
+#define divn_mask(p) mask(p->params->div_nmp->divn_width)
#define divp_mask(p) (p->flags & TEGRA_PLLU ? PLLU_POST_DIVP_MASK : \
- mask(p->divp_width))
+ mask(p->params->div_nmp->divp_width))
#define divm_max(p) (divm_mask(p))
#define divn_max(p) (divn_mask(p))
#define divp_max(p) (1 << (divp_mask(p)))
-
-#ifdef CONFIG_ARCH_TEGRA_114_SOC
-/* PLLXC has 4-bit PDIV, but entry 15 is not allowed in h/w */
-#define PLLXC_PDIV_MAX 14
-
-/* non-monotonic mapping below is not a typo */
-static u8 pllxc_p[PLLXC_PDIV_MAX + 1] = {
- /* PDIV: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 */
- /* p: */ 1, 2, 3, 4, 5, 6, 8, 10, 12, 16, 12, 16, 20, 24, 32
-};
-
-#define PLLCX_PDIV_MAX 7
-static u8 pllcx_p[PLLCX_PDIV_MAX + 1] = {
- /* PDIV: 0, 1, 2, 3, 4, 5, 6, 7 */
- /* p: */ 1, 2, 3, 4, 6, 8, 12, 16
+static struct div_nmp default_nmp = {
+ .divn_shift = PLL_BASE_DIVN_SHIFT,
+ .divn_width = PLL_BASE_DIVN_WIDTH,
+ .divm_shift = PLL_BASE_DIVM_SHIFT,
+ .divm_width = PLL_BASE_DIVM_WIDTH,
+ .divp_shift = PLL_BASE_DIVP_SHIFT,
+ .divp_width = PLL_BASE_DIVP_WIDTH,
};
-#endif
static void clk_pll_enable_lock(struct tegra_clk_pll *pll)
{
@@ -297,6 +286,39 @@ static void clk_pll_disable(struct clk_hw *hw)
spin_unlock_irqrestore(pll->lock, flags);
}
+static int _p_div_to_hw(struct clk_hw *hw, u8 p_div)
+{
+ struct tegra_clk_pll *pll = to_clk_pll(hw);
+ struct pdiv_map *p_tohw = pll->params->pdiv_tohw;
+
+ if (p_tohw) {
+ while (p_tohw->pdiv) {
+ if (p_div <= p_tohw->pdiv)
+ return p_tohw->hw_val;
+ p_tohw++;
+ }
+ return -EINVAL;
+ }
+ return -EINVAL;
+}
+
+static int _hw_to_p_div(struct clk_hw *hw, u8 p_div_hw)
+{
+ struct tegra_clk_pll *pll = to_clk_pll(hw);
+ struct pdiv_map *p_tohw = pll->params->pdiv_tohw;
+
+ if (p_tohw) {
+ while (p_tohw->pdiv) {
+ if (p_div_hw == p_tohw->hw_val)
+ return p_tohw->pdiv;
+ p_tohw++;
+ }
+ return -EINVAL;
+ }
+
+ return 1 << p_div_hw;
+}
+
static int _get_table_rate(struct clk_hw *hw,
struct tegra_clk_pll_freq_table *cfg,
unsigned long rate, unsigned long parent_rate)
@@ -326,9 +348,9 @@ static int _calc_rate(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg,
unsigned long rate, unsigned long parent_rate)
{
struct tegra_clk_pll *pll = to_clk_pll(hw);
- struct pdiv_map *p_tohw = pll->params->pdiv_tohw;
unsigned long cfreq;
u32 p_div = 0;
+ int ret;
switch (parent_rate) {
case 12000000:
@@ -369,20 +391,16 @@ static int _calc_rate(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg,
|| cfg->output_rate > pll->params->vco_max) {
pr_err("%s: Failed to set %s rate %lu\n",
__func__, __clk_get_name(hw->clk), rate);
+ WARN_ON(1);
return -EINVAL;
}
- if (p_tohw) {
- p_div = 1 << p_div;
- while (p_tohw->pdiv) {
- if (p_div <= p_tohw->pdiv) {
- cfg->p = p_tohw->hw_val;
- break;
- }
- p_tohw++;
- }
- if (!p_tohw->pdiv)
- return -EINVAL;
+ if (pll->params->pdiv_tohw) {
+ ret = _p_div_to_hw(hw, 1 << p_div);
+ if (ret < 0)
+ return ret;
+ else
+ cfg->p = ret;
} else
cfg->p = p_div;
@@ -393,29 +411,61 @@ static void _update_pll_mnp(struct tegra_clk_pll *pll,
struct tegra_clk_pll_freq_table *cfg)
{
u32 val;
+ struct tegra_clk_pll_params *params = pll->params;
+ struct div_nmp *div_nmp = params->div_nmp;
+
+ if ((pll->flags & TEGRA_PLLM) &&
+ (pll_override_readl(PMC_PLLP_WB0_OVERRIDE, pll) &
+ PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE)) {
+ val = pll_override_readl(params->pmc_divp_reg, pll);
+ val &= ~(divp_mask(pll) << div_nmp->override_divp_shift);
+ val |= cfg->p << div_nmp->override_divp_shift;
+ pll_override_writel(val, params->pmc_divp_reg, pll);
+
+ val = pll_override_readl(params->pmc_divnm_reg, pll);
+ val &= ~(divm_mask(pll) << div_nmp->override_divm_shift) |
+ ~(divn_mask(pll) << div_nmp->override_divn_shift);
+ val |= (cfg->m << div_nmp->override_divm_shift) |
+ (cfg->n << div_nmp->override_divn_shift);
+ pll_override_writel(val, params->pmc_divnm_reg, pll);
+ } else {
+ val = pll_readl_base(pll);
- val = pll_readl_base(pll);
+ val &= ~((divm_mask(pll) << div_nmp->divm_shift) |
+ (divn_mask(pll) << div_nmp->divn_shift) |
+ (divp_mask(pll) << div_nmp->divp_shift));
- val &= ~((divm_mask(pll) << pll->divm_shift) |
- (divn_mask(pll) << pll->divn_shift) |
- (divp_mask(pll) << pll->divp_shift));
- val |= ((cfg->m << pll->divm_shift) |
- (cfg->n << pll->divn_shift) |
- (cfg->p << pll->divp_shift));
+ val |= ((cfg->m << div_nmp->divm_shift) |
+ (cfg->n << div_nmp->divn_shift) |
+ (cfg->p << div_nmp->divp_shift));
- pll_writel_base(val, pll);
+ pll_writel_base(val, pll);
+ }
}
static void _get_pll_mnp(struct tegra_clk_pll *pll,
struct tegra_clk_pll_freq_table *cfg)
{
u32 val;
+ struct tegra_clk_pll_params *params = pll->params;
+ struct div_nmp *div_nmp = params->div_nmp;
+
+ if ((pll->flags & TEGRA_PLLM) &&
+ (pll_override_readl(PMC_PLLP_WB0_OVERRIDE, pll) &
+ PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE)) {
+ val = pll_override_readl(params->pmc_divp_reg, pll);
+ cfg->p = (val >> div_nmp->override_divp_shift) & divp_mask(pll);
+
+ val = pll_override_readl(params->pmc_divnm_reg, pll);
+ cfg->m = (val >> div_nmp->override_divm_shift) & divm_mask(pll);
+ cfg->n = (val >> div_nmp->override_divn_shift) & divn_mask(pll);
+ } else {
+ val = pll_readl_base(pll);
- val = pll_readl_base(pll);
-
- cfg->m = (val >> pll->divm_shift) & (divm_mask(pll));
- cfg->n = (val >> pll->divn_shift) & (divn_mask(pll));
- cfg->p = (val >> pll->divp_shift) & (divp_mask(pll));
+ cfg->m = (val >> div_nmp->divm_shift) & divm_mask(pll);
+ cfg->n = (val >> div_nmp->divn_shift) & divn_mask(pll);
+ cfg->p = (val >> div_nmp->divp_shift) & divp_mask(pll);
+ }
}
static void _update_pll_cpcon(struct tegra_clk_pll *pll,
@@ -485,9 +535,10 @@ static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
}
if (_get_table_rate(hw, &cfg, rate, parent_rate) &&
- _calc_rate(hw, &cfg, rate, parent_rate))
+ _calc_rate(hw, &cfg, rate, parent_rate)) {
+ WARN_ON(1);
return -EINVAL;
-
+ }
if (pll->lock)
spin_lock_irqsave(pll->lock, flags);
@@ -507,7 +558,6 @@ static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
{
struct tegra_clk_pll *pll = to_clk_pll(hw);
struct tegra_clk_pll_freq_table cfg;
- u64 output_rate = *prate;
if (pll->flags & TEGRA_PLL_FIXED)
return pll->fixed_rate;
@@ -517,13 +567,12 @@ static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
return __clk_get_rate(hw->clk);
if (_get_table_rate(hw, &cfg, rate, *prate) &&
- _calc_rate(hw, &cfg, rate, *prate))
+ _calc_rate(hw, &cfg, rate, *prate)) {
+ WARN_ON(1);
return -EINVAL;
+ }
- output_rate *= cfg.n;
- do_div(output_rate, cfg.m * (1 << cfg.p));
-
- return output_rate;
+ return cfg.output_rate;
}
static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
@@ -531,7 +580,6 @@ static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
{
struct tegra_clk_pll *pll = to_clk_pll(hw);
struct tegra_clk_pll_freq_table cfg;
- struct pdiv_map *p_tohw = pll->params->pdiv_tohw;
u32 val;
u64 rate = parent_rate;
int pdiv;
@@ -553,21 +601,11 @@ static unsigned long clk_pll_recalc_rate(struct clk_hw *hw,
_get_pll_mnp(pll, &cfg);
- if (p_tohw) {
- while (p_tohw->pdiv) {
- if (cfg.p == p_tohw->hw_val) {
- pdiv = p_tohw->pdiv;
- break;
- }
- p_tohw++;
- }
-
- if (!p_tohw->pdiv) {
- WARN_ON(1);
- pdiv = 1;
- }
- } else
- pdiv = 1 << cfg.p;
+ pdiv = _hw_to_p_div(hw, cfg.p);
+ if (pdiv < 0) {
+ WARN_ON(1);
+ pdiv = 1;
+ }
cfg.m *= pdiv;
@@ -647,9 +685,9 @@ static int clk_plle_enable(struct clk_hw *hw)
val = pll_readl_base(pll);
val &= ~(divm_mask(pll) | divn_mask(pll) | divp_mask(pll));
val &= ~(PLLE_BASE_DIVCML_WIDTH << PLLE_BASE_DIVCML_SHIFT);
- val |= sel.m << pll->divm_shift;
- val |= sel.n << pll->divn_shift;
- val |= sel.p << pll->divp_shift;
+ val |= sel.m << pll->params->div_nmp->divm_shift;
+ val |= sel.n << pll->params->div_nmp->divn_shift;
+ val |= sel.p << pll->params->div_nmp->divp_shift;
val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT;
pll_writel_base(val, pll);
}
@@ -680,9 +718,9 @@ static unsigned long clk_plle_recalc_rate(struct clk_hw *hw,
u32 divn = 0, divm = 0, divp = 0;
u64 rate = parent_rate;
- divp = (val >> pll->divp_shift) & (divp_mask(pll));
- divn = (val >> pll->divn_shift) & (divn_mask(pll));
- divm = (val >> pll->divm_shift) & (divm_mask(pll));
+ divp = (val >> pll->params->div_nmp->divp_shift) & (divp_mask(pll));
+ divn = (val >> pll->params->div_nmp->divn_shift) & (divn_mask(pll));
+ divm = (val >> pll->params->div_nmp->divm_shift) & (divm_mask(pll));
divm *= divp;
rate *= divn;
@@ -769,16 +807,22 @@ static int _calc_dynamic_ramp_rate(struct clk_hw *hw,
{
struct tegra_clk_pll *pll = to_clk_pll(hw);
unsigned int p;
+ int p_div;
if (!rate)
return -EINVAL;
p = DIV_ROUND_UP(pll->params->vco_min, rate);
cfg->m = _pll_fixed_mdiv(pll->params, parent_rate);
- cfg->p = p;
- cfg->output_rate = rate * cfg->p;
+ cfg->output_rate = rate * p;
cfg->n = cfg->output_rate * cfg->m / parent_rate;
+ p_div = _p_div_to_hw(hw, p);
+ if (p_div < 0)
+ return p_div;
+ else
+ cfg->p = p_div;
+
if (cfg->n > divn_max(pll) || cfg->output_rate > pll->params->vco_max)
return -EINVAL;
@@ -790,18 +834,25 @@ static int _pll_ramp_calc_pll(struct clk_hw *hw,
unsigned long rate, unsigned long parent_rate)
{
struct tegra_clk_pll *pll = to_clk_pll(hw);
- int err = 0;
+ int err = 0, p_div;
err = _get_table_rate(hw, cfg, rate, parent_rate);
if (err < 0)
err = _calc_dynamic_ramp_rate(hw, cfg, rate, parent_rate);
- else if (cfg->m != _pll_fixed_mdiv(pll->params, parent_rate)) {
+ else {
+ if (cfg->m != _pll_fixed_mdiv(pll->params, parent_rate)) {
WARN_ON(1);
err = -EINVAL;
goto out;
+ }
+ p_div = _p_div_to_hw(hw, cfg->p);
+ if (p_div < 0)
+ return p_div;
+ else
+ cfg->p = p_div;
}
- if (!cfg->p || (cfg->p > pll->params->max_p))
+ if (cfg->p > pll->params->max_p)
err = -EINVAL;
out:
@@ -815,7 +866,6 @@ static int clk_pllxc_set_rate(struct clk_hw *hw, unsigned long rate,
struct tegra_clk_pll_freq_table cfg, old_cfg;
unsigned long flags = 0;
int ret = 0;
- u8 old_p;
ret = _pll_ramp_calc_pll(hw, &cfg, rate, parent_rate);
if (ret < 0)
@@ -826,11 +876,8 @@ static int clk_pllxc_set_rate(struct clk_hw *hw, unsigned long rate,
_get_pll_mnp(pll, &old_cfg);
- old_p = pllxc_p[old_cfg.p];
- if (old_cfg.m != cfg.m || old_cfg.n != cfg.n || old_p != cfg.p) {
- cfg.p -= 1;
+ if (old_cfg.m != cfg.m || old_cfg.n != cfg.n || old_cfg.p != cfg.p)
ret = _program_pll(hw, &cfg, rate);
- }
if (pll->lock)
spin_unlock_irqrestore(pll->lock, flags);
@@ -842,15 +889,19 @@ static long clk_pll_ramp_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
struct tegra_clk_pll_freq_table cfg;
- int ret = 0;
+ int ret = 0, p_div;
u64 output_rate = *prate;
ret = _pll_ramp_calc_pll(hw, &cfg, rate, *prate);
if (ret < 0)
return ret;
+ p_div = _hw_to_p_div(hw, cfg.p);
+ if (p_div < 0)
+ return p_div;
+
output_rate *= cfg.n;
- do_div(output_rate, cfg.m * cfg.p);
+ do_div(output_rate, cfg.m * p_div);
return output_rate;
}
@@ -862,7 +913,6 @@ static int clk_pllm_set_rate(struct clk_hw *hw, unsigned long rate,
struct tegra_clk_pll *pll = to_clk_pll(hw);
unsigned long flags = 0;
int state, ret = 0;
- u32 val;
if (pll->lock)
spin_lock_irqsave(pll->lock, flags);
@@ -881,22 +931,7 @@ static int clk_pllm_set_rate(struct clk_hw *hw, unsigned long rate,
if (ret < 0)
goto out;
- cfg.p -= 1;
-
- val = readl_relaxed(pll->pmc + PMC_PLLM_WB0_OVERRIDE);
- if (val & PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE) {
- val = readl_relaxed(pll->pmc + PMC_PLLM_WB0_OVERRIDE_2);
- val = cfg.p ? (val | PMC_PLLM_WB0_OVERRIDE_2_DIVP_MASK) :
- (val & ~PMC_PLLM_WB0_OVERRIDE_2_DIVP_MASK);
- writel_relaxed(val, pll->pmc + PMC_PLLM_WB0_OVERRIDE_2);
-
- val = readl_relaxed(pll->pmc + PMC_PLLM_WB0_OVERRIDE);
- val &= ~(divn_mask(pll) | divm_mask(pll));
- val |= (cfg.m << pll->divm_shift) | (cfg.n << pll->divn_shift);
- writel_relaxed(val, pll->pmc + PMC_PLLM_WB0_OVERRIDE);
- } else
- _update_pll_mnp(pll, &cfg);
-
+ _update_pll_mnp(pll, &cfg);
out:
if (pll->lock)
@@ -1010,13 +1045,10 @@ static int _pllcx_update_dynamic_coef(struct tegra_clk_pll *pll,
static int clk_pllc_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
- struct tegra_clk_pll_freq_table cfg;
+ struct tegra_clk_pll_freq_table cfg, old_cfg;
struct tegra_clk_pll *pll = to_clk_pll(hw);
unsigned long flags = 0;
int state, ret = 0;
- u32 val;
- u16 old_m, old_n;
- u8 old_p;
if (pll->lock)
spin_lock_irqsave(pll->lock, flags);
@@ -1025,21 +1057,16 @@ static int clk_pllc_set_rate(struct clk_hw *hw, unsigned long rate,
if (ret < 0)
goto out;
- val = pll_readl_base(pll);
- old_m = (val >> pll->divm_shift) & (divm_mask(pll));
- old_n = (val >> pll->divn_shift) & (divn_mask(pll));
- old_p = pllcx_p[(val >> pll->divp_shift) & (divp_mask(pll))];
+ _get_pll_mnp(pll, &old_cfg);
- if (cfg.m != old_m) {
+ if (cfg.m != old_cfg.m) {
WARN_ON(1);
goto out;
}
- if (old_n == cfg.n && old_p == cfg.p)
+ if (old_cfg.n == cfg.n && old_cfg.p == cfg.p)
goto out;
- cfg.p -= 1;
-
state = clk_pll_is_enabled(hw);
if (state)
_clk_pllc_disable(hw);
@@ -1178,8 +1205,8 @@ static int clk_plle_tegra114_enable(struct clk_hw *hw)
val = pll_readl_base(pll);
val &= ~(divm_mask(pll) | divn_mask(pll) | divp_mask(pll));
val &= ~(PLLE_BASE_DIVCML_WIDTH << PLLE_BASE_DIVCML_SHIFT);
- val |= sel.m << pll->divm_shift;
- val |= sel.n << pll->divn_shift;
+ val |= sel.m << pll->params->div_nmp->divm_shift;
+ val |= sel.n << pll->params->div_nmp->divn_shift;
val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT;
pll_writel_base(val, pll);
udelay(1);
@@ -1240,12 +1267,8 @@ static struct tegra_clk_pll *_tegra_init_pll(void __iomem *clk_base,
pll->flags = pll_flags;
pll->lock = lock;
- pll->divp_shift = PLL_BASE_DIVP_SHIFT;
- pll->divp_width = PLL_BASE_DIVP_WIDTH;
- pll->divn_shift = PLL_BASE_DIVN_SHIFT;
- pll->divn_width = PLL_BASE_DIVN_WIDTH;
- pll->divm_shift = PLL_BASE_DIVM_SHIFT;
- pll->divm_width = PLL_BASE_DIVM_WIDTH;
+ if (!pll_params->div_nmp)
+ pll_params->div_nmp = &default_nmp;
return pll;
}
@@ -1401,7 +1424,7 @@ struct clk *tegra_clk_register_pllre(const char *name, const char *parent_name,
struct tegra_clk_pll *pll;
struct clk *clk;
- pll_flags |= TEGRA_PLL_HAS_LOCK_ENABLE;
+ pll_flags |= TEGRA_PLL_HAS_LOCK_ENABLE | TEGRA_PLL_LOCK_MISC;
pll = _tegra_init_pll(clk_base, pmc, fixed_rate, pll_params, pll_flags,
freq_table, lock);
if (IS_ERR(pll))
@@ -1428,7 +1451,6 @@ struct clk *tegra_clk_register_pllre(const char *name, const char *parent_name,
val &= ~BIT(29);
pll_writel_misc(val, pll);
- pll_flags |= TEGRA_PLL_LOCK_MISC;
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,
&tegra_clk_pllre_ops);
if (IS_ERR(clk))
@@ -1453,6 +1475,7 @@ struct clk *tegra_clk_register_pllm(const char *name, const char *parent_name,
pll_flags |= TEGRA_PLL_BYPASS;
pll_flags |= TEGRA_PLL_HAS_LOCK_ENABLE;
+ pll_flags |= TEGRA_PLLM;
pll = _tegra_init_pll(clk_base, pmc, fixed_rate, pll_params, pll_flags,
freq_table, lock);
if (IS_ERR(pll))
diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c
index 40d939d091bf..b6015cb4fc01 100644
--- a/drivers/clk/tegra/clk-tegra114.c
+++ b/drivers/clk/tegra/clk-tegra114.c
@@ -21,6 +21,7 @@
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/delay.h>
+#include <linux/export.h>
#include <linux/clk/tegra.h>
#include "clk.h"
@@ -28,6 +29,7 @@
#define RST_DEVICES_L 0x004
#define RST_DEVICES_H 0x008
#define RST_DEVICES_U 0x00C
+#define RST_DFLL_DVCO 0x2F4
#define RST_DEVICES_V 0x358
#define RST_DEVICES_W 0x35C
#define RST_DEVICES_X 0x28C
@@ -41,8 +43,36 @@
#define RST_DEVICES_CLR_V 0x434
#define RST_DEVICES_SET_W 0x438
#define RST_DEVICES_CLR_W 0x43c
+#define CPU_FINETRIM_SELECT 0x4d4 /* override default prop dlys */
+#define CPU_FINETRIM_DR 0x4d8 /* rise->rise prop dly A */
+#define CPU_FINETRIM_R 0x4e4 /* rise->rise prop dly inc A */
#define RST_DEVICES_NUM 5
+/* RST_DFLL_DVCO bitfields */
+#define DVFS_DFLL_RESET_SHIFT 0
+
+/* CPU_FINETRIM_SELECT and CPU_FINETRIM_DR bitfields */
+#define CPU_FINETRIM_1_FCPU_1 BIT(0) /* fcpu0 */
+#define CPU_FINETRIM_1_FCPU_2 BIT(1) /* fcpu1 */
+#define CPU_FINETRIM_1_FCPU_3 BIT(2) /* fcpu2 */
+#define CPU_FINETRIM_1_FCPU_4 BIT(3) /* fcpu3 */
+#define CPU_FINETRIM_1_FCPU_5 BIT(4) /* fl2 */
+#define CPU_FINETRIM_1_FCPU_6 BIT(5) /* ftop */
+
+/* CPU_FINETRIM_R bitfields */
+#define CPU_FINETRIM_R_FCPU_1_SHIFT 0 /* fcpu0 */
+#define CPU_FINETRIM_R_FCPU_1_MASK (0x3 << CPU_FINETRIM_R_FCPU_1_SHIFT)
+#define CPU_FINETRIM_R_FCPU_2_SHIFT 2 /* fcpu1 */
+#define CPU_FINETRIM_R_FCPU_2_MASK (0x3 << CPU_FINETRIM_R_FCPU_2_SHIFT)
+#define CPU_FINETRIM_R_FCPU_3_SHIFT 4 /* fcpu2 */
+#define CPU_FINETRIM_R_FCPU_3_MASK (0x3 << CPU_FINETRIM_R_FCPU_3_SHIFT)
+#define CPU_FINETRIM_R_FCPU_4_SHIFT 6 /* fcpu3 */
+#define CPU_FINETRIM_R_FCPU_4_MASK (0x3 << CPU_FINETRIM_R_FCPU_4_SHIFT)
+#define CPU_FINETRIM_R_FCPU_5_SHIFT 8 /* fl2 */
+#define CPU_FINETRIM_R_FCPU_5_MASK (0x3 << CPU_FINETRIM_R_FCPU_5_SHIFT)
+#define CPU_FINETRIM_R_FCPU_6_SHIFT 10 /* ftop */
+#define CPU_FINETRIM_R_FCPU_6_MASK (0x3 << CPU_FINETRIM_R_FCPU_6_SHIFT)
+
#define CLK_OUT_ENB_L 0x010
#define CLK_OUT_ENB_H 0x014
#define CLK_OUT_ENB_U 0x018
@@ -127,6 +157,7 @@
#define PMC_DPD_PADS_ORIDE_BLINK_ENB 20
#define PMC_CTRL 0
#define PMC_CTRL_BLINK_ENB 7
+#define PMC_BLINK_TIMER 0x40
#define OSC_CTRL 0x50
#define OSC_CTRL_OSC_FREQ_SHIFT 28
@@ -242,6 +273,8 @@
#define CLK_SOURCE_I2CSLOW 0x3fc
#define CLK_SOURCE_SE 0x42c
#define CLK_SOURCE_MSELECT 0x3b4
+#define CLK_SOURCE_DFLL_REF 0x62c
+#define CLK_SOURCE_DFLL_SOC 0x630
#define CLK_SOURCE_SOC_THERM 0x644
#define CLK_SOURCE_XUSB_HOST_SRC 0x600
#define CLK_SOURCE_XUSB_FALCON_SRC 0x604
@@ -250,6 +283,10 @@
#define CLK_SOURCE_XUSB_DEV_SRC 0x60c
#define CLK_SOURCE_EMC 0x19c
+/* PLLM override registers */
+#define PMC_PLLM_WB0_OVERRIDE 0x1dc
+#define PMC_PLLM_WB0_OVERRIDE_2 0x2b0
+
/* Tegra CPU clock and reset control regs */
#define CLK_RST_CONTROLLER_CPU_CMPLX_STATUS 0x470
@@ -267,6 +304,15 @@ static DEFINE_SPINLOCK(clk_doubler_lock);
static DEFINE_SPINLOCK(clk_out_lock);
static DEFINE_SPINLOCK(sysrate_lock);
+static struct div_nmp pllxc_nmp = {
+ .divm_shift = 0,
+ .divm_width = 8,
+ .divn_shift = 8,
+ .divn_width = 8,
+ .divp_shift = 20,
+ .divp_width = 4,
+};
+
static struct pdiv_map pllxc_p[] = {
{ .pdiv = 1, .hw_val = 0 },
{ .pdiv = 2, .hw_val = 1 },
@@ -315,6 +361,16 @@ static struct tegra_clk_pll_params pll_c_params = {
.stepa_shift = 17,
.stepb_shift = 9,
.pdiv_tohw = pllxc_p,
+ .div_nmp = &pllxc_nmp,
+};
+
+static struct div_nmp pllcx_nmp = {
+ .divm_shift = 0,
+ .divm_width = 2,
+ .divn_shift = 8,
+ .divn_width = 8,
+ .divp_shift = 20,
+ .divp_width = 3,
};
static struct pdiv_map pllc_p[] = {
@@ -348,6 +404,8 @@ static struct tegra_clk_pll_params pll_c2_params = {
.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
.lock_delay = 300,
.pdiv_tohw = pllc_p,
+ .div_nmp = &pllcx_nmp,
+ .max_p = 7,
.ext_misc_reg[0] = 0x4f0,
.ext_misc_reg[1] = 0x4f4,
.ext_misc_reg[2] = 0x4f8,
@@ -366,11 +424,25 @@ static struct tegra_clk_pll_params pll_c3_params = {
.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
.lock_delay = 300,
.pdiv_tohw = pllc_p,
+ .div_nmp = &pllcx_nmp,
+ .max_p = 7,
.ext_misc_reg[0] = 0x504,
.ext_misc_reg[1] = 0x508,
.ext_misc_reg[2] = 0x50c,
};
+static struct div_nmp pllm_nmp = {
+ .divm_shift = 0,
+ .divm_width = 8,
+ .override_divm_shift = 0,
+ .divn_shift = 8,
+ .divn_width = 8,
+ .override_divn_shift = 8,
+ .divp_shift = 20,
+ .divp_width = 1,
+ .override_divp_shift = 27,
+};
+
static struct pdiv_map pllm_p[] = {
{ .pdiv = 1, .hw_val = 0 },
{ .pdiv = 2, .hw_val = 1 },
@@ -400,6 +472,18 @@ static struct tegra_clk_pll_params pll_m_params = {
.lock_delay = 300,
.max_p = 2,
.pdiv_tohw = pllm_p,
+ .div_nmp = &pllm_nmp,
+ .pmc_divnm_reg = PMC_PLLM_WB0_OVERRIDE,
+ .pmc_divp_reg = PMC_PLLM_WB0_OVERRIDE_2,
+};
+
+static struct div_nmp pllp_nmp = {
+ .divm_shift = 0,
+ .divm_width = 5,
+ .divn_shift = 8,
+ .divn_width = 10,
+ .divp_shift = 20,
+ .divp_width = 3,
};
static struct tegra_clk_pll_freq_table pll_p_freq_table[] = {
@@ -423,6 +507,7 @@ static struct tegra_clk_pll_params pll_p_params = {
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
.lock_delay = 300,
+ .div_nmp = &pllp_nmp,
};
static struct tegra_clk_pll_freq_table pll_a_freq_table[] = {
@@ -449,6 +534,7 @@ static struct tegra_clk_pll_params pll_a_params = {
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
.lock_delay = 300,
+ .div_nmp = &pllp_nmp,
};
static struct tegra_clk_pll_freq_table pll_d_freq_table[] = {
@@ -484,6 +570,7 @@ static struct tegra_clk_pll_params pll_d_params = {
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
.lock_delay = 1000,
+ .div_nmp = &pllp_nmp,
};
static struct tegra_clk_pll_params pll_d2_params = {
@@ -498,6 +585,7 @@ static struct tegra_clk_pll_params pll_d2_params = {
.lock_mask = PLL_BASE_LOCK,
.lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
.lock_delay = 1000,
+ .div_nmp = &pllp_nmp,
};
static struct pdiv_map pllu_p[] = {
@@ -506,6 +594,15 @@ static struct pdiv_map pllu_p[] = {
{ .pdiv = 0, .hw_val = 0 },
};
+static struct div_nmp pllu_nmp = {
+ .divm_shift = 0,
+ .divm_width = 5,
+ .divn_shift = 8,
+ .divn_width = 10,
+ .divp_shift = 20,
+ .divp_width = 1,
+};
+
static struct tegra_clk_pll_freq_table pll_u_freq_table[] = {
{12000000, 480000000, 960, 12, 0, 12},
{13000000, 480000000, 960, 13, 0, 12},
@@ -528,6 +625,7 @@ static struct tegra_clk_pll_params pll_u_params = {
.lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
.lock_delay = 1000,
.pdiv_tohw = pllu_p,
+ .div_nmp = &pllu_nmp,
};
static struct tegra_clk_pll_freq_table pll_x_freq_table[] = {
@@ -560,6 +658,7 @@ static struct tegra_clk_pll_params pll_x_params = {
.stepa_shift = 16,
.stepb_shift = 24,
.pdiv_tohw = pllxc_p,
+ .div_nmp = &pllxc_nmp,
};
static struct tegra_clk_pll_freq_table pll_e_freq_table[] = {
@@ -569,6 +668,15 @@ static struct tegra_clk_pll_freq_table pll_e_freq_table[] = {
{0, 0, 0, 0, 0, 0},
};
+static struct div_nmp plle_nmp = {
+ .divm_shift = 0,
+ .divm_width = 8,
+ .divn_shift = 8,
+ .divn_width = 8,
+ .divp_shift = 24,
+ .divp_width = 4,
+};
+
static struct tegra_clk_pll_params pll_e_params = {
.input_min = 12000000,
.input_max = 1000000000,
@@ -582,6 +690,16 @@ static struct tegra_clk_pll_params pll_e_params = {
.lock_mask = PLLE_MISC_LOCK,
.lock_enable_bit_idx = PLLE_MISC_LOCK_ENABLE,
.lock_delay = 300,
+ .div_nmp = &plle_nmp,
+};
+
+static struct div_nmp pllre_nmp = {
+ .divm_shift = 0,
+ .divm_width = 8,
+ .divn_shift = 8,
+ .divn_width = 8,
+ .divp_shift = 16,
+ .divp_width = 4,
};
static struct tegra_clk_pll_params pll_re_vco_params = {
@@ -598,6 +716,7 @@ static struct tegra_clk_pll_params pll_re_vco_params = {
.lock_delay = 300,
.iddq_reg = PLLRE_MISC,
.iddq_bit_idx = PLLRE_IDDQ_BIT,
+ .div_nmp = &pllre_nmp,
};
/* Peripheral clock registers */
@@ -765,6 +884,7 @@ enum tegra114_clk {
audio1, audio2, audio3, audio4, spdif, clk_out_1, clk_out_2, clk_out_3,
blink, xusb_host_src = 252, xusb_falcon_src, xusb_fs_src, xusb_ss_src,
xusb_dev_src, xusb_dev, xusb_hs_src, sclk, hclk, pclk, cclk_g, cclk_lp,
+ dfll_ref = 264, dfll_soc,
/* Mux clocks */
@@ -1202,8 +1322,8 @@ static void __init tegra114_pll_init(void __iomem *clk_base,
/* PLLP_OUT2 */
clk = tegra_clk_register_divider("pll_p_out2_div", "pll_p",
clk_base + PLLP_OUTA, 0, TEGRA_DIVIDER_FIXED |
- TEGRA_DIVIDER_ROUND_UP, 24, 8, 1,
- &pll_div_lock);
+ TEGRA_DIVIDER_ROUND_UP | TEGRA_DIVIDER_INT, 24,
+ 8, 1, &pll_div_lock);
clk = tegra_clk_register_pll_out("pll_p_out2", "pll_p_out2_div",
clk_base + PLLP_OUTA, 17, 16,
CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0,
@@ -1605,7 +1725,7 @@ static void __init tegra114_pmc_clk_init(void __iomem *pmc_base)
/* clk_out_2 */
clk = clk_register_mux(NULL, "clk_out_2_mux", clk_out2_parents,
- ARRAY_SIZE(clk_out1_parents), 0,
+ ARRAY_SIZE(clk_out2_parents), 0,
pmc_base + PMC_CLK_OUT_CNTRL, 14, 3, 0,
&clk_out_lock);
clks[clk_out_2_mux] = clk;
@@ -1617,7 +1737,7 @@ static void __init tegra114_pmc_clk_init(void __iomem *pmc_base)
/* clk_out_3 */
clk = clk_register_mux(NULL, "clk_out_3_mux", clk_out3_parents,
- ARRAY_SIZE(clk_out1_parents), 0,
+ ARRAY_SIZE(clk_out3_parents), 0,
pmc_base + PMC_CLK_OUT_CNTRL, 22, 3, 0,
&clk_out_lock);
clks[clk_out_3_mux] = clk;
@@ -1628,6 +1748,8 @@ static void __init tegra114_pmc_clk_init(void __iomem *pmc_base)
clks[clk_out_3] = clk;
/* blink */
+ /* clear the blink timer register to directly output clk_32k */
+ writel_relaxed(0, pmc_base + PMC_BLINK_TIMER);
clk = clk_register_gate(NULL, "blink_override", "clk_32k", 0,
pmc_base + PMC_DPD_PADS_ORIDE,
PMC_DPD_PADS_ORIDE_BLINK_ENB, 0, NULL);
@@ -1640,7 +1762,7 @@ static void __init tegra114_pmc_clk_init(void __iomem *pmc_base)
}
static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4",
- "pll_p_out3", "pll_p_out2", "unused",
+ "pll_p", "pll_p_out2", "unused",
"clk_32k", "pll_m_out1" };
static const char *cclk_g_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m",
@@ -1750,7 +1872,7 @@ static struct tegra_periph_init_data tegra_periph_clk_list[] = {
TEGRA_INIT_DATA_MUX("vi_sensor", "vi_sensor", "tegra_camera", mux_pllm_pllc2_c_c3_pllp_plla, CLK_SOURCE_VI_SENSOR, 20, &periph_l_regs, TEGRA_PERIPH_NO_RESET, vi_sensor),
TEGRA_INIT_DATA_INT8("vi", "vi", "tegra_camera", mux_pllm_pllc2_c_c3_pllp_plla, CLK_SOURCE_VI, 20, &periph_l_regs, 0, vi),
TEGRA_INIT_DATA_INT8("epp", NULL, "epp", mux_pllm_pllc2_c_c3_pllp_plla, CLK_SOURCE_EPP, 19, &periph_l_regs, 0, epp),
- TEGRA_INIT_DATA_INT8("msenc", NULL, "msenc", mux_pllm_pllc2_c_c3_pllp_plla, CLK_SOURCE_MSENC, 91, &periph_h_regs, TEGRA_PERIPH_WAR_1005168, msenc),
+ TEGRA_INIT_DATA_INT8("msenc", NULL, "msenc", mux_pllm_pllc2_c_c3_pllp_plla, CLK_SOURCE_MSENC, 91, &periph_u_regs, TEGRA_PERIPH_WAR_1005168, msenc),
TEGRA_INIT_DATA_INT8("tsec", NULL, "tsec", mux_pllp_pllc2_c_c3_pllm_clkm, CLK_SOURCE_TSEC, 83, &periph_u_regs, 0, tsec),
TEGRA_INIT_DATA_INT8("host1x", NULL, "host1x", mux_pllm_pllc2_c_c3_pllp_plla, CLK_SOURCE_HOST1X, 28, &periph_l_regs, 0, host1x),
TEGRA_INIT_DATA_MUX8("hdmi", NULL, "hdmi", mux_pllp_pllm_plld_plla_pllc_plld2_clkm, CLK_SOURCE_HDMI, 51, &periph_h_regs, 0, hdmi),
@@ -1767,6 +1889,8 @@ static struct tegra_periph_init_data tegra_periph_clk_list[] = {
TEGRA_INIT_DATA_MUX("i2cslow", NULL, "i2cslow", mux_pllp_pllc_clk32_clkm, CLK_SOURCE_I2CSLOW, 81, &periph_u_regs, TEGRA_PERIPH_ON_APB, i2cslow),
TEGRA_INIT_DATA_INT8("se", NULL, "se", mux_pllp_pllc2_c_c3_pllm_clkm, CLK_SOURCE_SE, 127, &periph_v_regs, TEGRA_PERIPH_ON_APB, se),
TEGRA_INIT_DATA_INT_FLAGS("mselect", NULL, "mselect", mux_pllp_clkm, CLK_SOURCE_MSELECT, 99, &periph_v_regs, 0, mselect, CLK_IGNORE_UNUSED),
+ TEGRA_INIT_DATA_MUX("dfll_ref", "ref", "t114_dfll", mux_pllp_clkm, CLK_SOURCE_DFLL_REF, 155, &periph_w_regs, TEGRA_PERIPH_ON_APB, dfll_ref),
+ TEGRA_INIT_DATA_MUX("dfll_soc", "soc", "t114_dfll", mux_pllp_clkm, CLK_SOURCE_DFLL_SOC, 155, &periph_w_regs, TEGRA_PERIPH_ON_APB, dfll_soc),
TEGRA_INIT_DATA_MUX8("soc_therm", NULL, "soc_therm", mux_pllm_pllc_pllp_plla, CLK_SOURCE_SOC_THERM, 78, &periph_u_regs, TEGRA_PERIPH_ON_APB, soc_therm),
TEGRA_INIT_DATA_XUSB("xusb_host_src", "host_src", "tegra_xhci", mux_clkm_pllp_pllc_pllre, CLK_SOURCE_XUSB_HOST_SRC, 143, &periph_w_regs, TEGRA_PERIPH_ON_APB | TEGRA_PERIPH_NO_RESET, xusb_host_src),
TEGRA_INIT_DATA_XUSB("xusb_falcon_src", "falcon_src", "tegra_xhci", mux_clkm_pllp_pllc_pllre, CLK_SOURCE_XUSB_FALCON_SRC, 143, &periph_w_regs, TEGRA_PERIPH_NO_RESET, xusb_falcon_src),
@@ -2028,6 +2152,10 @@ static const struct of_device_id pmc_match[] __initconst = {
{},
};
+/*
+ * dfll_soc/dfll_ref apparently must be kept enabled, otherwise I2C5
+ * breaks
+ */
static __initdata struct tegra_clk_init_table init_table[] = {
{uarta, pll_p, 408000000, 0},
{uartb, pll_p, 408000000, 0},
@@ -2043,6 +2171,8 @@ static __initdata struct tegra_clk_init_table init_table[] = {
{i2s2, pll_a_out0, 11289600, 0},
{i2s3, pll_a_out0, 11289600, 0},
{i2s4, pll_a_out0, 11289600, 0},
+ {dfll_soc, pll_p, 51000000, 1},
+ {dfll_ref, pll_p, 51000000, 1},
{clk_max, clk_max, 0, 0}, /* This MUST be the last entry. */
};
@@ -2051,7 +2181,132 @@ static void __init tegra114_clock_apply_init_table(void)
tegra_init_from_table(init_table, clks, clk_max);
}
-void __init tegra114_clock_init(struct device_node *np)
+
+/**
+ * tegra114_car_barrier - wait for pending writes to the CAR to complete
+ *
+ * Wait for any outstanding writes to the CAR MMIO space from this CPU
+ * to complete before continuing execution. No return value.
+ */
+static void tegra114_car_barrier(void)
+{
+ wmb(); /* probably unnecessary */
+ readl_relaxed(clk_base + CPU_FINETRIM_SELECT);
+}
+
+/**
+ * tegra114_clock_tune_cpu_trimmers_high - use high-voltage propagation delays
+ *
+ * When the CPU rail voltage is in the high-voltage range, use the
+ * built-in hardwired clock propagation delays in the CPU clock
+ * shaper. No return value.
+ */
+void tegra114_clock_tune_cpu_trimmers_high(void)
+{
+ u32 select = 0;
+
+ /* Use hardwired rise->rise & fall->fall clock propagation delays */
+ select |= ~(CPU_FINETRIM_1_FCPU_1 | CPU_FINETRIM_1_FCPU_2 |
+ CPU_FINETRIM_1_FCPU_3 | CPU_FINETRIM_1_FCPU_4 |
+ CPU_FINETRIM_1_FCPU_5 | CPU_FINETRIM_1_FCPU_6);
+ writel_relaxed(select, clk_base + CPU_FINETRIM_SELECT);
+
+ tegra114_car_barrier();
+}
+EXPORT_SYMBOL(tegra114_clock_tune_cpu_trimmers_high);
+
+/**
+ * tegra114_clock_tune_cpu_trimmers_low - use low-voltage propagation delays
+ *
+ * When the CPU rail voltage is in the low-voltage range, use the
+ * extended clock propagation delays set by
+ * tegra114_clock_tune_cpu_trimmers_init(). The intention is to
+ * maintain the input clock duty cycle that the FCPU subsystem
+ * expects. No return value.
+ */
+void tegra114_clock_tune_cpu