diff options
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/timer-imx-sysctr.c | 53 |
1 files changed, 49 insertions, 4 deletions
diff --git a/drivers/clocksource/timer-imx-sysctr.c b/drivers/clocksource/timer-imx-sysctr.c index c075ea89a214..44525813be1e 100644 --- a/drivers/clocksource/timer-imx-sysctr.c +++ b/drivers/clocksource/timer-imx-sysctr.c @@ -9,12 +9,15 @@ #include "timer-of.h" #define CMP_OFFSET 0x10000 +#define RD_OFFSET 0x20000 #define CNTCV_LO 0x8 #define CNTCV_HI 0xc #define CMPCV_LO (CMP_OFFSET + 0x20) #define CMPCV_HI (CMP_OFFSET + 0x24) #define CMPCR (CMP_OFFSET + 0x2c) +#define CNTCV_LO_IMX95 (RD_OFFSET + 0x8) +#define CNTCV_HI_IMX95 (RD_OFFSET + 0xc) #define SYS_CTR_EN 0x1 #define SYS_CTR_IRQ_MASK 0x2 @@ -23,6 +26,8 @@ struct sysctr_private { u32 cmpcr; + u32 lo_off; + u32 hi_off; }; static void sysctr_timer_enable(struct clock_event_device *evt, bool enable) @@ -47,13 +52,14 @@ static void sysctr_irq_acknowledge(struct clock_event_device *evt) static inline u64 sysctr_read_counter(struct clock_event_device *evt) { struct timer_of *to = to_timer_of(evt); + struct sysctr_private *priv = to->private_data; void __iomem *base = timer_of_base(to); u32 cnt_hi, tmp_hi, cnt_lo; do { - cnt_hi = readl_relaxed(base + CNTCV_HI); - cnt_lo = readl_relaxed(base + CNTCV_LO); - tmp_hi = readl_relaxed(base + CNTCV_HI); + cnt_hi = readl_relaxed(base + priv->hi_off); + cnt_lo = readl_relaxed(base + priv->lo_off); + tmp_hi = readl_relaxed(base + priv->hi_off); } while (tmp_hi != cnt_hi); return ((u64) cnt_hi << 32) | cnt_lo; @@ -127,7 +133,7 @@ static struct timer_of to_sysctr = { }, }; -static int __init sysctr_timer_init(struct device_node *np) +static int __init __sysctr_timer_init(struct device_node *np) { struct sysctr_private *priv; void __iomem *base; @@ -154,9 +160,48 @@ static int __init sysctr_timer_init(struct device_node *np) base = timer_of_base(&to_sysctr); priv->cmpcr = readl(base + CMPCR) & ~SYS_CTR_EN; + return 0; +} + +static int __init sysctr_timer_init(struct device_node *np) +{ + struct sysctr_private *priv; + int ret; + + ret = __sysctr_timer_init(np); + if (ret) + return ret; + + priv = to_sysctr.private_data; + priv->lo_off = CNTCV_LO; + priv->hi_off = CNTCV_HI; + clockevents_config_and_register(&to_sysctr.clkevt, timer_of_rate(&to_sysctr), 0xff, 0x7fffffff); + return 0; } + +static int __init sysctr_timer_imx95_init(struct device_node *np) +{ + struct sysctr_private *priv; + int ret; + + ret = __sysctr_timer_init(np); + if (ret) + return ret; + + priv = to_sysctr.private_data; + priv->lo_off = CNTCV_LO_IMX95; + priv->hi_off = CNTCV_HI_IMX95; + + clockevents_config_and_register(&to_sysctr.clkevt, + timer_of_rate(&to_sysctr), + 0xff, 0x7fffffff); + + return 0; +} + TIMER_OF_DECLARE(sysctr_timer, "nxp,sysctr-timer", sysctr_timer_init); +TIMER_OF_DECLARE(sysctr_timer_imx95, "nxp,imx95-sysctr-timer", sysctr_timer_imx95_init); |