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Message-Id: <1585715222-24489-1-git-send-email-Anson.Huang@nxp.com>
Date: Wed, 1 Apr 2020 12:27:02 +0800
From: Anson Huang <Anson.Huang@....com>
To: daniel.lezcano@...aro.org, tglx@...utronix.de, shawnguo@...nel.org,
s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: Linux-imx@....com
Subject: [PATCH] clocksource/drivers/imx-tpm: Add support for ARM64
Allows building and compile-testing the i.MX TPM driver also
for ARM64. The delay_timer is only supported on ARMv7.
Signed-off-by: Anson Huang <Anson.Huang@....com>
---
drivers/clocksource/timer-imx-tpm.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/clocksource/timer-imx-tpm.c b/drivers/clocksource/timer-imx-tpm.c
index 6334a35..2cdc077 100644
--- a/drivers/clocksource/timer-imx-tpm.c
+++ b/drivers/clocksource/timer-imx-tpm.c
@@ -61,17 +61,19 @@ static inline void tpm_irq_acknowledge(void)
writel(TPM_STATUS_CH0F, timer_base + TPM_STATUS);
}
-static struct delay_timer tpm_delay_timer;
-
static inline unsigned long tpm_read_counter(void)
{
return readl(timer_base + TPM_CNT);
}
+#if defined(CONFIG_ARM)
+static struct delay_timer tpm_delay_timer;
+
static unsigned long tpm_read_current_timer(void)
{
return tpm_read_counter();
}
+#endif
static u64 notrace tpm_read_sched_clock(void)
{
@@ -144,9 +146,11 @@ static struct timer_of to_tpm = {
static int __init tpm_clocksource_init(void)
{
+#if defined(CONFIG_ARM)
tpm_delay_timer.read_current_timer = &tpm_read_current_timer;
tpm_delay_timer.freq = timer_of_rate(&to_tpm) >> 3;
register_current_timer_delay(&tpm_delay_timer);
+#endif
sched_clock_register(tpm_read_sched_clock, counter_width,
timer_of_rate(&to_tpm) >> 3);
--
2.7.4
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