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timer: orion-timer: Add timer_get_boot_us() for BOOTSTAGE support

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Add timer_get_boot_us() to support boards, that have CONFIG_BOOTSTAGE
enabled, like pogo_v4.

Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Tony Dinh <mibodhi@gmail.com>
This commit is contained in:
Stefan Roese 2022-09-15 16:20:38 +02:00
parent 89fd0cccf9
commit a68f13a3b6
1 changed files with 64 additions and 19 deletions
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81
drivers/timer/orion-timer.c
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@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0+ // SPDX-License-Identifier: GPL-2.0+
#include <asm/io.h> #include <asm/io.h>
#include <common.h> #include <common.h>
#include <div64.h>
#include <dm/device.h> #include <dm/device.h>
#include <dm/fdtaddr.h> #include <dm/fdtaddr.h>
#include <timer.h> #include <timer.h>
@ -22,12 +23,56 @@ struct orion_timer_priv {
#define MVEBU_TIMER_FIXED_RATE_25MHZ 25000000 #define MVEBU_TIMER_FIXED_RATE_25MHZ 25000000
static bool early_init_done __section(".data") = false;
/* Common functions for early (boot) and DM based timer */
static void orion_timer_init(void *base, enum input_clock_type type)
{
writel(~0, base + TIMER0_VAL);
writel(~0, base + TIMER0_RELOAD);
if (type == INPUT_CLOCK_25MHZ) {
/*
* On Armada XP / 38x ..., the 25MHz clock source needs to
* be enabled
*/
setbits_le32(base + TIMER_CTRL, BIT(11));
}
/* enable timer */
setbits_le32(base + TIMER_CTRL, TIMER0_EN | TIMER0_RELOAD_EN);
}
static uint64_t orion_timer_get_count(void *base)
{
return timer_conv_64(~readl(base + TIMER0_VAL));
}
/* Early (e.g. bootstage etc) timer functions */
static void notrace timer_early_init(void)
{
/* Only init the timer once */
if (early_init_done)
return;
early_init_done = true;
if (IS_ENABLED(CONFIG_ARCH_MVEBU))
orion_timer_init((void *)MVEBU_TIMER_BASE, INPUT_CLOCK_25MHZ);
else
orion_timer_init((void *)MVEBU_TIMER_BASE, INPUT_CLOCK_NON_FIXED);
}
/** /**
* timer_early_get_rate() - Get the timer rate before driver model * timer_early_get_rate() - Get the timer rate before driver model
*/ */
unsigned long notrace timer_early_get_rate(void) unsigned long notrace timer_early_get_rate(void)
{ {
timer_early_init();
if (IS_ENABLED(CONFIG_ARCH_MVEBU))
return MVEBU_TIMER_FIXED_RATE_25MHZ; return MVEBU_TIMER_FIXED_RATE_25MHZ;
else
return CONFIG_SYS_TCLK;
} }
/** /**
@ -36,14 +81,25 @@ unsigned long notrace timer_early_get_rate(void)
*/ */
u64 notrace timer_early_get_count(void) u64 notrace timer_early_get_count(void)
{ {
return timer_conv_64(~readl(MVEBU_TIMER_BASE + TIMER0_VAL)); timer_early_init();
return orion_timer_get_count((void *)MVEBU_TIMER_BASE);
} }
static uint64_t orion_timer_get_count(struct udevice *dev) ulong timer_get_boot_us(void)
{
u64 ticks;
ticks = timer_early_get_count();
return lldiv(ticks * 1000, timer_early_get_rate());
}
/* DM timer functions */
static uint64_t dm_orion_timer_get_count(struct udevice *dev)
{ {
struct orion_timer_priv *priv = dev_get_priv(dev); struct orion_timer_priv *priv = dev_get_priv(dev);
return timer_conv_64(~readl(priv->base + TIMER0_VAL)); return orion_timer_get_count(priv->base);
} }
static int orion_timer_probe(struct udevice *dev) static int orion_timer_probe(struct udevice *dev)
@ -58,28 +114,17 @@ static int orion_timer_probe(struct udevice *dev)
return -ENOMEM; return -ENOMEM;
} }
writel(~0, priv->base + TIMER0_VAL); if (type == INPUT_CLOCK_25MHZ)
writel(~0, priv->base + TIMER0_RELOAD);
if (type == INPUT_CLOCK_25MHZ) {
/*
* On Armada XP / 38x ..., the 25MHz clock source needs to
* be enabled
*/
setbits_le32(priv->base + TIMER_CTRL, BIT(11));
uc_priv->clock_rate = MVEBU_TIMER_FIXED_RATE_25MHZ; uc_priv->clock_rate = MVEBU_TIMER_FIXED_RATE_25MHZ;
} else { else
uc_priv->clock_rate = CONFIG_SYS_TCLK; uc_priv->clock_rate = CONFIG_SYS_TCLK;
} orion_timer_init(priv->base, type);
/* enable timer */
setbits_le32(priv->base + TIMER_CTRL, TIMER0_EN | TIMER0_RELOAD_EN);
return 0; return 0;
} }
static const struct timer_ops orion_timer_ops = { static const struct timer_ops orion_timer_ops = {
.get_count = orion_timer_get_count, .get_count = dm_orion_timer_get_count,
}; };
static const struct udevice_id orion_timer_ids[] = { static const struct udevice_id orion_timer_ids[] = {