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 --- v3: - Also support fixed input clock in early timer code - Consolidate code for this
v2: - Change timer_get_boot_us() to use the timer_early functions - Remove #if CONFIG_IS_ENABLED(BOOTSTAGE)
drivers/timer/orion-timer.c | 83 ++++++++++++++++++++++++++++--------- 1 file changed, 64 insertions(+), 19 deletions(-)
diff --git a/drivers/timer/orion-timer.c b/drivers/timer/orion-timer.c index 14f318e57d4d..cd63ea916237 100644 --- a/drivers/timer/orion-timer.c +++ b/drivers/timer/orion-timer.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0+ #include <asm/io.h> #include <common.h> +#include <div64.h> #include <dm/device.h> #include <dm/fdtaddr.h> #include <timer.h> @@ -22,12 +23,56 @@ struct orion_timer_priv {
#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 */ unsigned long notrace timer_early_get_rate(void) { - return MVEBU_TIMER_FIXED_RATE_25MHZ; + timer_early_init(); + + if (IS_ENABLED(CONFIG_ARCH_MVEBU)) + 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) { - 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);
- return timer_conv_64(~readl(priv->base + TIMER0_VAL)); + return orion_timer_get_count(priv->base); }
static int orion_timer_probe(struct udevice *dev) @@ -58,28 +114,17 @@ static int orion_timer_probe(struct udevice *dev) return -ENOMEM; }
- writel(~0, priv->base + TIMER0_VAL); - 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)); + if (type == INPUT_CLOCK_25MHZ) uc_priv->clock_rate = MVEBU_TIMER_FIXED_RATE_25MHZ; - } else { + else uc_priv->clock_rate = CONFIG_SYS_TCLK; - } - - /* enable timer */ - setbits_le32(priv->base + TIMER_CTRL, TIMER0_EN | TIMER0_RELOAD_EN); + orion_timer_init(priv->base, type);
return 0; }
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[] = {