[PATCH 2/2] timer: imx-tpm: add imx tpm timer support

Daniel Lezcano daniel.lezcano at linaro.org
Thu May 25 13:54:55 PDT 2017


On Sat, May 13, 2017 at 03:29:35PM +0800, Dong Aisheng wrote:
> IMX Timer/PWM Module (TPM) supports both timer and pwm function while
> this patch only adds the timer support. PWM would be added later.
> 
> The TPM counter, compare and capture registers are clocked by an
> asynchronous clock that can remain enabled in low power modes.
> 
> Cc: Daniel Lezcano <daniel.lezcano at linaro.org>
> Cc: Thomas Gleixner <tglx at linutronix.de>
> Cc: Shawn Guo <shawnguo at kernel.org>
> Signed-off-by: Anson Huang <Anson.Huang at nxp.com>
> Signed-off-by: Bai Ping <ping.bai at nxp.com>
> Signed-off-by: Dong Aisheng <aisheng.dong at nxp.com>
> ---

[ ... ]

> +	val = __raw_readl(timer_base + TPM_C0SC);
> +	val &= ~(TPM_C0SC_MODE_MASK | TPM_C0SC_CHIE);
> +	__raw_writel(val, timer_base + TPM_C0SC);

Hi Dong,

why are you using __raw_write/__raw_read instead of regular readl/writel?




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