static void __init omap_clk_register_apll(struct clk_hw *hw,
struct device_node *node)
{
struct clk_hw_omap *clk_hw = to_clk_hw_omap(hw);
struct dpll_data *ad = clk_hw->dpll_data;
struct clk *clk;
ad->clk_ref = of_clk_get(node, 0);
ad->clk_bypass = of_clk_get(node, 1);
if (IS_ERR(ad->clk_ref) || IS_ERR(ad->clk_bypass)) {
pr_debug("clk-ref or clk-bypass for %s not ready, retry\n",
node->name);
if (!ti_clk_retry_init(node, hw, omap_clk_register_apll))
return;
goto cleanup;
}
clk = clk_register(NULL, &clk_hw->hw);
if (!IS_ERR(clk)) {
of_clk_add_provider(node, of_clk_src_simple_get, clk);
kfree(clk_hw->hw.init->parent_names);
kfree(clk_hw->hw.init);
return;
}
cleanup:
kfree(clk_hw->dpll_data);
kfree(clk_hw->hw.init->parent_names);
kfree(clk_hw->hw.init);
kfree(clk_hw);
}
/*
* FIXME - setting the parent every time .prepare is invoked is inefficient.
* This is better handled by a dedicated clock tree configuration mechanism at
* init-time. Revisit this later when such a mechanism exists
*/
static int clk_sp810_timerclken_prepare(struct clk_hw *hw)
{
struct clk_sp810_timerclken *timerclken = to_clk_sp810_timerclken(hw);
struct clk_sp810 *sp810 = timerclken->sp810;
struct clk *old_parent = __clk_get_parent(hw->clk);
struct clk *new_parent;
if (!sp810->refclk)
sp810->refclk = of_clk_get(sp810->node, sp810->refclk_index);
if (!sp810->timclk)
sp810->timclk = of_clk_get(sp810->node, sp810->timclk_index);
if (WARN_ON(IS_ERR(sp810->refclk) || IS_ERR(sp810->timclk)))
return -ENOENT;
/* Select fastest parent */
if (clk_get_rate(sp810->refclk) > clk_get_rate(sp810->timclk))
new_parent = sp810->refclk;
else
new_parent = sp810->timclk;
/* Switch the parent if necessary */
if (old_parent != new_parent) {
clk_prepare(new_parent);
clk_set_parent(hw->clk, new_parent);
clk_unprepare(old_parent);
}
return 0;
}
int asoc_simple_card_parse_clk(struct device_node *node,
struct device_node *dai_of_node,
struct asoc_simple_dai *simple_dai)
{
struct clk *clk;
u32 val;
/*
* Parse dai->sysclk come from "clocks = <&xxx>"
* (if system has common clock)
* or "system-clock-frequency = <xxx>"
* or device's module clock.
*/
clk = of_clk_get(node, 0);
if (!IS_ERR(clk)) {
simple_dai->sysclk = clk_get_rate(clk);
simple_dai->clk = clk;
} else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
simple_dai->sysclk = val;
} else {
clk = of_clk_get(dai_of_node, 0);
if (!IS_ERR(clk))
simple_dai->sysclk = clk_get_rate(clk);
}
return 0;
}
static int
asoc_simple_card_sub_parse_of(struct device_node *np,
struct asoc_simple_dai *dai,
struct device_node **p_node,
const char **name,
int *args_count)
{
struct of_phandle_args args;
struct clk *clk;
u32 val;
int ret;
/*
* Get node via "sound-dai = <&phandle port>"
* it will be used as xxx_of_node on soc_bind_dai_link()
*/
ret = of_parse_phandle_with_args(np, "sound-dai",
"#sound-dai-cells", 0, &args);
if (ret)
return ret;
*p_node = args.np;
if (args_count)
*args_count = args.args_count;
/* Get dai->name */
ret = snd_soc_of_get_dai_name(np, name);
if (ret < 0)
return ret;
/* Parse TDM slot */
ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
if (ret)
return ret;
/*
* Parse dai->sysclk come from "clocks = <&xxx>"
* (if system has common clock)
* or "system-clock-frequency = <xxx>"
* or device's module clock.
*/
if (of_property_read_bool(np, "clocks")) {
clk = of_clk_get(np, 0);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
return ret;
}
dai->sysclk = clk_get_rate(clk);
} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
dai->sysclk = val;
} else {
clk = of_clk_get(args.np, 0);
if (!IS_ERR(clk))
dai->sysclk = clk_get_rate(clk);
}
return 0;
}
int sprd_iommu_mm_init(struct sprd_iommu_dev *dev, struct sprd_iommu_init_data *data)
{
int err=-1;
#ifdef CONFIG_OF && CONFIG_COMMON_CLK
struct device_node *np;
np = dev->misc_dev.this_device->of_node;
if(!np) {
return -1;
}
dev->mmu_clock=of_clk_get(np, 0) ;
dev->mmu_mclock=of_clk_get(np,1);
#else
dev->mmu_mclock= clk_get(NULL,"clk_mm_i");
dev->mmu_clock=clk_get(NULL,"clk_mmu");
if (!dev->mmu_mclock) {
printk ("%s, cant get dev->mmu_mclock\n", __FUNCTION__);
return -1;
}
#endif
if (!dev->mmu_clock) {
printk ("%s, cant get dev->mmu_clock\n", __FUNCTION__);
return -1;
}
sprd_iommu_mm_enable(dev);
err=sprd_iommu_init(dev,data);
sprd_iommu_mm_disable(dev);
return err;
}
static void __init sp804_of_init(struct device_node *np)
{
static bool initialized = false;
void __iomem *base;
int irq;
u32 irq_num = 0;
struct clk *clk1, *clk2;
const char *name = of_get_property(np, "compatible", NULL);
base = of_iomap(np, 0);
if (WARN_ON(!base))
return;
/* Ensure timers are disabled */
writel(0, base + TIMER_CTRL);
writel(0, base + TIMER_2_BASE + TIMER_CTRL);
if (initialized || !of_device_is_available(np))
goto err;
clk1 = of_clk_get(np, 0);
if (IS_ERR(clk1))
clk1 = NULL;
/* Get the 2nd clock if the timer has 3 timer clocks */
if (of_count_phandle_with_args(np, "clocks", "#clock-cells") == 3) {
clk2 = of_clk_get(np, 1);
if (IS_ERR(clk2)) {
pr_err("sp804: %s clock not found: %d\n", np->name,
(int)PTR_ERR(clk2));
clk2 = NULL;
}
} else
clk2 = clk1;
irq = irq_of_parse_and_map(np, 0);
if (irq <= 0)
goto err;
of_property_read_u32(np, "arm,sp804-has-irq", &irq_num);
if (irq_num == 2) {
__sp804_clockevents_init(base + TIMER_2_BASE, irq, clk2, name);
__sp804_clocksource_and_sched_clock_init(base, name, clk1, 1);
} else {
__sp804_clockevents_init(base, irq, clk1 , name);
__sp804_clocksource_and_sched_clock_init(base + TIMER_2_BASE,
name, clk2, 1);
}
initialized = true;
return;
err:
iounmap(base);
}
/**
* ttc_timer_init - Initialize the timer
*
* Initializes the timer hardware and register the clock source and clock event
* timers with Linux kernal timer framework
*/
static void __init ttc_timer_init(struct device_node *timer)
{
unsigned int irq;
void __iomem *timer_baseaddr;
struct clk *clk_cs, *clk_ce;
static int initialized;
int clksel;
if (initialized)
return;
initialized = 1;
/*
* Get the 1st Triple Timer Counter (TTC) block from the device tree
* and use it. Note that the event timer uses the interrupt and it's the
* 2nd TTC hence the irq_of_parse_and_map(,1)
*/
timer_baseaddr = of_iomap(timer, 0);
if (!timer_baseaddr) {
pr_err("ERROR: invalid timer base address\n");
BUG();
}
irq = irq_of_parse_and_map(timer, 1);
if (irq <= 0) {
pr_err("ERROR: invalid interrupt number\n");
BUG();
}
clksel = __raw_readl(timer_baseaddr + TTC_CLK_CNTRL_OFFSET);
clksel = !!(clksel & TTC_CLK_CNTRL_CSRC_MASK);
clk_cs = of_clk_get(timer, clksel);
if (IS_ERR(clk_cs)) {
pr_err("ERROR: timer input clock not found\n");
BUG();
}
clksel = __raw_readl(timer_baseaddr + 4 + TTC_CLK_CNTRL_OFFSET);
clksel = !!(clksel & TTC_CLK_CNTRL_CSRC_MASK);
clk_ce = of_clk_get(timer, clksel);
if (IS_ERR(clk_ce)) {
pr_err("ERROR: timer input clock not found\n");
BUG();
}
ttc_setup_clocksource(clk_cs, timer_baseaddr);
ttc_setup_clockevent(clk_ce, timer_baseaddr + 4, irq);
pr_info("%s #0 at %p, irq=%d\n", timer->name, timer_baseaddr, irq);
}
/**
* _register_dpll - low level registration of a DPLL clock
* @hw: hardware clock definition for the clock
* @node: device node for the clock
*
* Finalizes DPLL registration process. In case a failure (clk-ref or
* clk-bypass is missing), the clock is added to retry list and
* the initialization is retried on later stage.
*/
static void __init _register_dpll(struct clk_hw *hw,
struct device_node *node)
{
struct clk_hw_omap *clk_hw = to_clk_hw_omap(hw);
struct dpll_data *dd = clk_hw->dpll_data;
struct clk *clk;
clk = of_clk_get(node, 0);
if (IS_ERR(clk)) {
pr_debug("clk-ref missing for %s, retry later\n",
node->name);
if (!ti_clk_retry_init(node, hw, _register_dpll))
return;
goto cleanup;
}
dd->clk_ref = __clk_get_hw(clk);
clk = of_clk_get(node, 1);
if (IS_ERR(clk)) {
pr_debug("clk-bypass missing for %s, retry later\n",
node->name);
if (!ti_clk_retry_init(node, hw, _register_dpll))
return;
goto cleanup;
}
dd->clk_bypass = __clk_get_hw(clk);
/* register the clock */
clk = clk_register(NULL, &clk_hw->hw);
if (!IS_ERR(clk)) {
omap2_init_clk_hw_omap_clocks(&clk_hw->hw);
of_clk_add_provider(node, of_clk_src_simple_get, clk);
kfree(clk_hw->hw.init->parent_names);
kfree(clk_hw->hw.init);
return;
}
cleanup:
kfree(clk_hw->dpll_data);
kfree(clk_hw->hw.init->parent_names);
kfree(clk_hw->hw.init);
kfree(clk_hw);
}
static int __init sun5i_timer_init(struct device_node *node)
{
struct reset_control *rstc;
void __iomem *timer_base;
struct clk *clk;
int irq, ret;
timer_base = of_io_request_and_map(node, 0, of_node_full_name(node));
if (IS_ERR(timer_base)) {
pr_err("Can't map registers\n");
return PTR_ERR(timer_base);
}
irq = irq_of_parse_and_map(node, 0);
if (irq <= 0) {
pr_err("Can't parse IRQ\n");
return -EINVAL;
}
clk = of_clk_get(node, 0);
if (IS_ERR(clk)) {
pr_err("Can't get timer clock\n");
return PTR_ERR(clk);
}
rstc = of_reset_control_get(node, NULL);
if (!IS_ERR(rstc))
reset_control_deassert(rstc);
ret = sun5i_setup_clocksource(node, timer_base, clk, irq);
if (ret)
return ret;
return sun5i_setup_clockevent(node, timer_base, clk, irq);
}
static int rockchip_pd_attach_dev(struct generic_pm_domain *genpd,
struct device *dev)
{
struct clk *clk;
int i;
int error;
dev_dbg(dev, "attaching to power domain '%s'\n", genpd->name);
error = pm_clk_create(dev);
if (error) {
dev_err(dev, "pm_clk_create failed %d\n", error);
return error;
}
i = 0;
while ((clk = of_clk_get(dev->of_node, i++)) && !IS_ERR(clk)) {
dev_dbg(dev, "adding clock '%pC' to list of PM clocks\n", clk);
error = pm_clk_add_clk(dev, clk);
if (error) {
dev_err(dev, "pm_clk_add_clk failed %d\n", error);
clk_put(clk);
pm_clk_destroy(dev);
return error;
}
}
return 0;
}
static void __init ath79_of_plat_time_init(void)
{
struct device_node *np;
struct clk *clk;
unsigned long cpu_clk_rate;
of_clk_init(NULL);
np = of_get_cpu_node(0, NULL);
if (!np) {
pr_err("Failed to get CPU node\n");
return;
}
clk = of_clk_get(np, 0);
if (IS_ERR(clk)) {
pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk));
return;
}
cpu_clk_rate = clk_get_rate(clk);
pr_info("CPU clock: %lu.%03lu MHz\n",
cpu_clk_rate / 1000000, (cpu_clk_rate / 1000) % 1000);
mips_hpt_frequency = cpu_clk_rate / 2;
clk_put(clk);
}
static int __init h8300_16timer_init(struct device_node *node)
{
void __iomem *base[2];
int ret, irq;
unsigned int ch;
struct clk *clk;
clk = of_clk_get(node, 0);
if (IS_ERR(clk)) {
pr_err("failed to get clock for clocksource\n");
return PTR_ERR(clk);
}
ret = -ENXIO;
base[REG_CH] = of_iomap(node, 0);
if (!base[REG_CH]) {
pr_err("failed to map registers for clocksource\n");
goto free_clk;
}
base[REG_COMM] = of_iomap(node, 1);
if (!base[REG_COMM]) {
pr_err("failed to map registers for clocksource\n");
goto unmap_ch;
}
ret = -EINVAL;
irq = irq_of_parse_and_map(node, 0);
if (!irq) {
pr_err("failed to get irq for clockevent\n");
goto unmap_comm;
}
of_property_read_u32(node, "renesas,channel", &ch);
timer16_priv.mapbase = base[REG_CH];
timer16_priv.mapcommon = base[REG_COMM];
timer16_priv.enb = ch;
timer16_priv.ovf = ch;
timer16_priv.ovie = 4 + ch;
ret = request_irq(irq, timer16_interrupt,
IRQF_TIMER, timer16_priv.cs.name, &timer16_priv);
if (ret < 0) {
pr_err("failed to request irq %d of clocksource\n", irq);
goto unmap_comm;
}
clocksource_register_hz(&timer16_priv.cs,
clk_get_rate(clk) / 8);
return 0;
unmap_comm:
iounmap(base[REG_COMM]);
unmap_ch:
iounmap(base[REG_CH]);
free_clk:
clk_put(clk);
return ret;
}
static void __init of_ti_clockdomain_setup(struct device_node *node)
{
struct clk *clk;
struct clk_hw *clk_hw;
const char *clkdm_name = node->name;
int i;
int num_clks;
num_clks = of_count_phandle_with_args(node, "clocks", "#clock-cells");
for (i = 0; i < num_clks; i++) {
clk = of_clk_get(node, i);
if (IS_ERR(clk)) {
pr_err("%s: Failed get %s' clock nr %d (%ld)\n",
__func__, node->full_name, i, PTR_ERR(clk));
continue;
}
if (__clk_get_flags(clk) & CLK_IS_BASIC) {
pr_warn("can't setup clkdm for basic clk %s\n",
__clk_get_name(clk));
continue;
}
clk_hw = __clk_get_hw(clk);
to_clk_hw_omap(clk_hw)->clkdm_name = clkdm_name;
omap2_init_clk_clkdm(clk_hw);
}
}
static void __init gic_clocksource_of_init(struct device_node *node)
{
struct clk *clk;
if (WARN_ON(!gic_present || !node->parent ||
!of_device_is_compatible(node->parent, "mti,gic")))
return;
clk = of_clk_get(node, 0);
if (!IS_ERR(clk)) {
gic_frequency = clk_get_rate(clk);
clk_put(clk);
} else if (of_property_read_u32(node, "clock-frequency",
&gic_frequency)) {
pr_err("GIC frequency not specified.\n");
return;
}
gic_timer_irq = irq_of_parse_and_map(node, 0);
if (!gic_timer_irq) {
pr_err("GIC timer IRQ not specified.\n");
return;
}
__gic_clocksource_init();
}
static int __must_check of_clk_bulk_get(struct device_node *np, int num_clks,
struct clk_bulk_data *clks)
{
int ret;
int i;
for (i = 0; i < num_clks; i++)
clks[i].clk = NULL;
for (i = 0; i < num_clks; i++) {
clks[i].clk = of_clk_get(np, i);
if (IS_ERR(clks[i].clk)) {
ret = PTR_ERR(clks[i].clk);
pr_err("%pOF: Failed to get clk index: %d ret: %d\n",
np, i, ret);
clks[i].clk = NULL;
goto err;
}
}
return 0;
err:
clk_bulk_put(i, clks);
return ret;
}
static void __init h8300_tpu_init(struct device_node *node)
{
void __iomem *base[2];
struct clk *clk;
clk = of_clk_get(node, 0);
if (IS_ERR(clk)) {
pr_err("failed to get clock for clocksource\n");
return;
}
base[CH_L] = of_iomap(node, CH_L);
if (!base[CH_L]) {
pr_err("failed to map registers for clocksource\n");
goto free_clk;
}
base[CH_H] = of_iomap(node, CH_H);
if (!base[CH_H]) {
pr_err("failed to map registers for clocksource\n");
goto unmap_L;
}
tpu_priv.mapbase1 = base[CH_L];
tpu_priv.mapbase2 = base[CH_H];
clocksource_register_hz(&tpu_priv.cs, clk_get_rate(clk) / 64);
return;
unmap_L:
iounmap(base[CH_H]);
free_clk:
clk_put(clk);
}
void __init mxc_arch_reset_init_dt(void)
{
struct device_node *np = NULL;
if (cpu_is_imx6q() || cpu_is_imx6dl())
np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-gpc");
else if (cpu_is_imx6sl())
np = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-gpc");
if (np)
of_property_read_u32(np, "fsl,wdog-reset", &wdog_source);
pr_info("Use WDOG%d as reset source\n", wdog_source);
np = of_find_compatible_node(NULL, NULL, "fsl,imx21-wdt");
wdog_base = of_iomap(np, 0);
WARN_ON(!wdog_base);
/* Some i.MX6 boards use WDOG2 to reset board in ldo-bypass mode */
if (wdog_source == 2 && (cpu_is_imx6q() || cpu_is_imx6dl() ||
cpu_is_imx6sl())) {
np = of_find_compatible_node(np, NULL, "fsl,imx21-wdt");
wdog_base = of_iomap(np, 0);
WARN_ON(!wdog_base);
}
wdog_clk = of_clk_get(np, 0);
if (IS_ERR(wdog_clk)) {
pr_warn("%s: failed to get wdog clock\n", __func__);
wdog_clk = NULL;
return;
}
clk_prepare(wdog_clk);
}
static void __init imx6q_1588_init(void)
{
struct device_node *np;
struct clk *ptp_clk;
struct regmap *gpr;
np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-fec");
if (!np) {
pr_warn("%s: failed to find fec node\n", __func__);
return;
}
ptp_clk = of_clk_get(np, 2);
if (IS_ERR(ptp_clk)) {
pr_warn("%s: failed to get ptp clock\n", __func__);
goto put_node;
}
/*
* If enet_ref from ANATOP/CCM is the PTP clock source, we need to
* set bit IOMUXC_GPR1[21]. Or the PTP clock must be from pad
* (external OSC), and we need to clear the bit.
*/
gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
if (!IS_ERR(gpr))
regmap_update_bits(gpr, IOMUXC_GPR1,
IMX6Q_GPR1_ENET_CLK_SEL_MASK,
IMX6Q_GPR1_ENET_CLK_SEL_ANATOP);
else
pr_err("failed to find fsl,imx6q-iomux-gpr regmap\n");
clk_put(ptp_clk);
put_node:
of_node_put(np);
}
static void __init sun5i_timer_init(struct device_node *node)
{
struct reset_control *rstc;
void __iomem *timer_base;
struct clk *clk;
int irq;
timer_base = of_io_request_and_map(node, 0, of_node_full_name(node));
if (!timer_base)
panic("Can't map registers");
irq = irq_of_parse_and_map(node, 0);
if (irq <= 0)
panic("Can't parse IRQ");
clk = of_clk_get(node, 0);
if (IS_ERR(clk))
panic("Can't get timer clock");
rstc = of_reset_control_get(node, NULL);
if (!IS_ERR(rstc))
reset_control_deassert(rstc);
sun5i_setup_clocksource(node, timer_base, clk, irq);
sun5i_setup_clockevent(node, timer_base, clk, irq);
}
static void __init tango_clocksource_init(struct device_node *np)
{
struct clk *clk;
int xtal_freq, ret;
xtal_in_cnt = of_iomap(np, 0);
if (xtal_in_cnt == NULL) {
pr_err("%s: invalid address\n", np->full_name);
return;
}
clk = of_clk_get(np, 0);
if (IS_ERR(clk)) {
pr_err("%s: invalid clock\n", np->full_name);
return;
}
xtal_freq = clk_get_rate(clk);
delay_timer.freq = xtal_freq;
delay_timer.read_current_timer = read_xtal_counter;
ret = clocksource_register_hz(&tango_xtal, xtal_freq);
if (ret != 0) {
pr_err("%s: registration failed\n", np->full_name);
return;
}
sched_clock_register(read_sched_clock, 32, xtal_freq);
register_current_timer_delay(&delay_timer);
}
static int __init armada_375_timer_init(struct device_node *np)
{
struct clk *clk;
int ret;
clk = of_clk_get_by_name(np, "fixed");
if (!IS_ERR(clk)) {
ret = clk_prepare_enable(clk);
if (ret)
return ret;
timer_clk = clk_get_rate(clk);
} else {
/*
* This fallback is required in order to retain proper
* devicetree backwards compatibility.
*/
clk = of_clk_get(np, 0);
/* Must have at least a clock */
if (IS_ERR(clk)) {
pr_err("Failed to get clock");
return PTR_ERR(clk);
}
ret = clk_prepare_enable(clk);
if (ret)
return ret;
timer_clk = clk_get_rate(clk) / TIMER_DIVIDER;
timer25Mhz = false;
}
return armada_370_xp_timer_common_init(np);
}
static int __init nps_get_timer_clk(struct device_node *node,
unsigned long *timer_freq,
struct clk **clk)
{
int ret;
*clk = of_clk_get(node, 0);
ret = PTR_ERR_OR_ZERO(*clk);
if (ret) {
pr_err("timer missing clk");
return ret;
}
ret = clk_prepare_enable(*clk);
if (ret) {
pr_err("Couldn't enable parent clk\n");
clk_put(*clk);
return ret;
}
*timer_freq = clk_get_rate(*clk);
if (!(*timer_freq)) {
pr_err("Couldn't get clk rate\n");
clk_disable_unprepare(*clk);
clk_put(*clk);
return -EINVAL;
}
return 0;
}
static int moxart_wdt_probe(struct platform_device *pdev)
{
struct moxart_wdt_dev *moxart_wdt;
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct resource *res;
struct clk *clk;
int err;
unsigned int max_timeout;
bool nowayout = WATCHDOG_NOWAYOUT;
moxart_wdt = devm_kzalloc(dev, sizeof(*moxart_wdt), GFP_KERNEL);
if (!moxart_wdt)
return -ENOMEM;
platform_set_drvdata(pdev, moxart_wdt);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
moxart_wdt->base = devm_ioremap_resource(dev, res);
if (IS_ERR(moxart_wdt->base))
return PTR_ERR(moxart_wdt->base);
clk = of_clk_get(node, 0);
if (IS_ERR(clk)) {
pr_err("%s: of_clk_get failed\n", __func__);
return PTR_ERR(clk);
}
moxart_wdt->clock_frequency = clk_get_rate(clk);
if (moxart_wdt->clock_frequency == 0) {
pr_err("%s: incorrect clock frequency\n", __func__);
return -EINVAL;
}
max_timeout = UINT_MAX / moxart_wdt->clock_frequency;
moxart_wdt->dev.info = &moxart_wdt_info;
moxart_wdt->dev.ops = &moxart_wdt_ops;
moxart_wdt->dev.timeout = max_timeout;
moxart_wdt->dev.min_timeout = 1;
moxart_wdt->dev.max_timeout = max_timeout;
moxart_wdt->dev.parent = dev;
watchdog_init_timeout(&moxart_wdt->dev, heartbeat, dev);
watchdog_set_nowayout(&moxart_wdt->dev, nowayout);
watchdog_set_drvdata(&moxart_wdt->dev, moxart_wdt);
err = watchdog_register_device(&moxart_wdt->dev);
if (err)
return err;
moxart_restart_ctx = moxart_wdt;
arm_pm_restart = moxart_wdt_restart;
dev_dbg(dev, "Watchdog enabled (heartbeat=%d sec, nowayout=%d)\n",
moxart_wdt->dev.timeout, nowayout);
return 0;
}
static void __init armada_375_timer_init(struct device_node *np)
{
struct clk *clk;
clk = of_clk_get_by_name(np, "fixed");
if (!IS_ERR(clk)) {
clk_prepare_enable(clk);
timer_clk = clk_get_rate(clk);
} else {
/*
* This fallback is required in order to retain proper
* devicetree backwards compatibility.
*/
clk = of_clk_get(np, 0);
/* Must have at least a clock */
BUG_ON(IS_ERR(clk));
clk_prepare_enable(clk);
timer_clk = clk_get_rate(clk) / TIMER_DIVIDER;
timer25Mhz = false;
}
armada_370_xp_timer_common_init(np);
}
static int hisi_pwm_probe(struct platform_device *pdev)
{
struct device_node *np = NULL;
int ret = 0;
HISI_FB_DEBUG("+.\n");
BUG_ON(pdev == NULL);
np = of_find_compatible_node(NULL, NULL, DTS_COMP_PWM_NAME);
if (!np) {
HISI_FB_ERR("NOT FOUND device node %s!\n", DTS_COMP_PWM_NAME);
ret = -ENXIO;
goto err_return;
}
/* get pwm reg base */
hisifd_pwm_base = of_iomap(np, 0);
#if !defined(CONFIG_ARCH_HI3630FPGA) && !defined(CONFIG_HISI_3635_FPGA) \
&& !defined(CONFIG_HISI_3650_FPGA)
/* pwm pinctrl init */
ret = pinctrl_cmds_tx(pdev, pwm_pinctrl_init_cmds,
ARRAY_SIZE(pwm_pinctrl_init_cmds));
if (ret != 0) {
HISI_FB_ERR("Init pwm pinctrl failed! ret=%d.\n", ret);
goto err_return;
}
/* get blpwm clk resource */
g_dss_pwm_clk = of_clk_get(np, 0);
if (IS_ERR(g_dss_pwm_clk)) {
HISI_FB_ERR("%s clock not found: %d!\n",
np->name, (int)PTR_ERR(g_dss_pwm_clk));
ret = -ENXIO;
goto err_return;
}
ret = clk_set_rate(g_dss_pwm_clk, DEFAULT_PWM_CLK_RATE);
if (ret != 0) {
HISI_FB_ERR("dss_pwm_clk clk_set_rate(%lu) failed, error=%d!\n",
DEFAULT_PWM_CLK_RATE, ret);
ret = -EINVAL;
goto err_return;
}
HISI_FB_INFO("dss_pwm_clk:[%lu]->[%lu].\n",
DEFAULT_PWM_CLK_RATE, clk_get_rate(g_dss_pwm_clk));
#endif
hisi_fb_device_set_status0(DTS_PWM_READY);
HISI_FB_DEBUG("-.\n");
return 0;
err_return:
return ret;
}
static void __init mxs_timer_init(struct device_node *np)
{
struct clk *timer_clk;
int irq;
mxs_timrot_base = of_iomap(np, 0);
WARN_ON(!mxs_timrot_base);
timer_clk = of_clk_get(np, 0);
if (IS_ERR(timer_clk)) {
pr_err("%s: failed to get clk\n", __func__);
return;
}
clk_prepare_enable(timer_clk);
/*
* Initialize timers to a known state
*/
stmp_reset_block(mxs_timrot_base + HW_TIMROT_ROTCTRL);
/* get timrot version */
timrot_major_version = __raw_readl(mxs_timrot_base +
(of_device_is_compatible(np, "fsl,imx23-timrot") ?
MX23_TIMROT_VERSION_OFFSET :
MX28_TIMROT_VERSION_OFFSET));
timrot_major_version >>= BP_TIMROT_MAJOR_VERSION;
/* one for clock_event */
__raw_writel((timrot_is_v1() ?
BV_TIMROTv1_TIMCTRLn_SELECT__32KHZ_XTAL :
BV_TIMROTv2_TIMCTRLn_SELECT__TICK_ALWAYS) |
BM_TIMROT_TIMCTRLn_UPDATE |
BM_TIMROT_TIMCTRLn_IRQ_EN,
mxs_timrot_base + HW_TIMROT_TIMCTRLn(0));
/* another for clocksource */
__raw_writel((timrot_is_v1() ?
BV_TIMROTv1_TIMCTRLn_SELECT__32KHZ_XTAL :
BV_TIMROTv2_TIMCTRLn_SELECT__TICK_ALWAYS) |
BM_TIMROT_TIMCTRLn_RELOAD,
mxs_timrot_base + HW_TIMROT_TIMCTRLn(1));
/* set clocksource timer fixed count to the maximum */
if (timrot_is_v1())
__raw_writel(0xffff,
mxs_timrot_base + HW_TIMROT_TIMCOUNTn(1));
else
__raw_writel(0xffffffff,
mxs_timrot_base + HW_TIMROT_FIXED_COUNTn(1));
/* init and register the timer to the framework */
mxs_clocksource_init(timer_clk);
mxs_clockevent_init(timer_clk);
/* Make irqs happen */
irq = irq_of_parse_and_map(np, 0);
setup_irq(irq, &mxs_timer_irq);
}
static int alt_fpga_bridge_probe(struct platform_device *pdev)
{
struct altera_hps2fpga_data *priv;
const struct of_device_id *of_id;
struct device *dev = &pdev->dev;
uint32_t init_val;
int rc;
struct clk *clk;
of_id = of_match_device(altera_fpga_of_match, dev);
priv = (struct altera_hps2fpga_data *)of_id->data;
WARN_ON(!priv);
priv->np = dev->of_node;
priv->pdev = pdev;
priv->bridge_reset = devm_reset_control_get(dev, priv->name);
if (IS_ERR(priv->bridge_reset)) {
dev_err(dev, "Could not get %s reset control!\n", priv->name);
return PTR_ERR(priv->bridge_reset);
}
priv->l3reg = syscon_regmap_lookup_by_compatible("altr,l3regs");
if (IS_ERR(priv->l3reg)) {
dev_err(dev, "regmap for altr,l3regs lookup failed.\n");
return PTR_ERR(priv->l3reg);
}
clk = of_clk_get(pdev->dev.of_node, 0);
if (IS_ERR(clk)) {
dev_err(dev, "no clock specified\n");
return PTR_ERR(clk);
}
rc = clk_prepare_enable(clk);
if (rc) {
dev_err(dev, "could not enable clock\n");
return -EBUSY;
}
rc = register_fpga_bridge(pdev, &altera_hps2fpga_br_ops,
priv->name, priv);
if (rc)
return rc;
if (of_property_read_u32(priv->np, "init-val", &init_val))
dev_info(&priv->pdev->dev, "init-val not specified\n");
else if (init_val > 1)
dev_warn(&priv->pdev->dev, "invalid init-val %u > 1\n",
init_val);
else {
dev_info(&priv->pdev->dev, "%s bridge\n",
(init_val ? "enabling" : "disabling"));
_alt_hps2fpga_enable_set(priv, init_val);
}
return rc;
}
static int __init integrator_ap_timer_init_of(struct device_node *node)
{
const char *path;
void __iomem *base;
int err;
int irq;
struct clk *clk;
unsigned long rate;
struct device_node *pri_node;
struct device_node *sec_node;
base = of_io_request_and_map(node, 0, "integrator-timer");
if (IS_ERR(base))
return PTR_ERR(base);
clk = of_clk_get(node, 0);
if (IS_ERR(clk)) {
pr_err("No clock for %pOFn\n", node);
return PTR_ERR(clk);
}
clk_prepare_enable(clk);
rate = clk_get_rate(clk);
writel(0, base + TIMER_CTRL);
err = of_property_read_string(of_aliases,
"arm,timer-primary", &path);
if (err) {
pr_warn("Failed to read property\n");
return err;
}
pri_node = of_find_node_by_path(path);
err = of_property_read_string(of_aliases,
"arm,timer-secondary", &path);
if (err) {
pr_warn("Failed to read property\n");
return err;
}
sec_node = of_find_node_by_path(path);
if (node == pri_node)
/* The primary timer lacks IRQ, use as clocksource */
return integrator_clocksource_init(rate, base);
if (node == sec_node) {
/* The secondary timer will drive the clock event */
irq = irq_of_parse_and_map(node, 0);
return integrator_clockevent_init(rate, base, irq);
}
pr_info("Timer @%p unused\n", base);
clk_disable_unprepare(clk);
return 0;
}
/* initialize the kernel jiffy timer source */
static int __init sirfsoc_prima2_timer_init(struct device_node *np)
{
unsigned long rate;
struct clk *clk;
int ret;
clk = of_clk_get(np, 0);
if (IS_ERR(clk)) {
pr_err("Failed to get clock");
return PTR_ERR(clk);
}
ret = clk_prepare_enable(clk);
if (ret) {
pr_err("Failed to enable clock");
return ret;
}
rate = clk_get_rate(clk);
if (rate < PRIMA2_CLOCK_FREQ || rate % PRIMA2_CLOCK_FREQ) {
pr_err("Invalid clock rate");
return -EINVAL;
}
sirfsoc_timer_base = of_iomap(np, 0);
if (!sirfsoc_timer_base) {
pr_err("unable to map timer cpu registers\n");
return -ENXIO;
}
sirfsoc_timer_irq.irq = irq_of_parse_and_map(np, 0);
writel_relaxed(rate / PRIMA2_CLOCK_FREQ / 2 - 1,
sirfsoc_timer_base + SIRFSOC_TIMER_DIV);
writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);
writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI);
writel_relaxed(BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_STATUS);
ret = clocksource_register_hz(&sirfsoc_clocksource, PRIMA2_CLOCK_FREQ);
if (ret) {
pr_err("Failed to register clocksource");
return ret;
}
sched_clock_register(sirfsoc_read_sched_clock, 64, PRIMA2_CLOCK_FREQ);
ret = setup_irq(sirfsoc_timer_irq.irq, &sirfsoc_timer_irq);
if (ret) {
pr_err("Failed to setup irq");
return ret;
}
sirfsoc_clockevent_init();
return 0;
}
static void __init mvebu_clk_gating_setup(
struct device_node *np, const struct mvebu_soc_descr *descr)
{
struct mvebu_gating_ctrl *ctrl;
struct clk *clk;
void __iomem *base;
const char *default_parent = NULL;
int n;
base = of_iomap(np, 0);
clk = of_clk_get(np, 0);
if (!IS_ERR(clk)) {
default_parent = __clk_get_name(clk);
clk_put(clk);
}
ctrl = kzalloc(sizeof(struct mvebu_gating_ctrl), GFP_KERNEL);
if (WARN_ON(!ctrl))
return;
spin_lock_init(&ctrl->lock);
/*
* Count, allocate, and register clock gates
*/
for (n = 0; descr[n].name;)
n++;
ctrl->num_gates = n;
ctrl->gates = kzalloc(ctrl->num_gates * sizeof(struct clk *),
GFP_KERNEL);
if (WARN_ON(!ctrl->gates)) {
kfree(ctrl);
return;
}
for (n = 0; n < ctrl->num_gates; n++) {
u8 flags = 0;
const char *parent =
(descr[n].parent) ? descr[n].parent : default_parent;
/*
* On Armada 370, the DDR clock is a special case: it
* isn't taken by any driver, but should anyway be
* kept enabled, so we mark it as IGNORE_UNUSED for
* now.
*/
if (!strcmp(descr[n].name, "ddr"))
flags |= CLK_IGNORE_UNUSED;
ctrl->gates[n] = clk_register_gate(NULL, descr[n].name, parent,
flags, base, descr[n].bit_idx, 0, &ctrl->lock);
WARN_ON(IS_ERR(ctrl->gates[n]));
}
of_clk_add_provider(np, mvebu_clk_gating_get_src, ctrl);
}