linux-kernel - Re: [PATCH-v2 2/5] mfd: 88pm800: Update the header file with 32K clk related macros

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Message-ID: <20150825075556.GG19409@x1>
Date:	Tue, 25 Aug 2015 08:55:56 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Vaibhav Hiremath <vaibhav.hiremath@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, robh+dt@...nel.org,
	mturquette@...libre.com, k.kozlowski@...sung.com,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org
Subject: Re: [PATCH-v2 2/5] mfd: 88pm800: Update the header file with 32K clk
 related macros

On Tue, 25 Aug 2015, Vaibhav Hiremath wrote:

> Update header file with required macros for 32KHz buffered clock
> output of 88PM800 family of device.
> These macros will be used in clk provider driver.
> 
> Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@...aro.org>
> ---
>  include/linux/mfd/88pm80x.h | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h
> index 122cfd2..0215d5f 100644
> --- a/include/linux/mfd/88pm80x.h
> +++ b/include/linux/mfd/88pm80x.h
> @@ -91,6 +91,7 @@ enum {
>  /* Referance and low power registers */
>  #define PM800_LOW_POWER1		(0x20)
>  #define PM800_LOW_POWER2		(0x21)
> +#define PM800_LOW_POWER2_XO_LJ_EN	BIT(5)

Some people add an extra space for register bits, which I quite like.

So:

#define SOME_REGISTER_ADDRESS	0x123
#define  SOME_BIT_VALUE		BIT(4)

Feel free to use it, or not.

>  #define PM800_LOW_POWER_CONFIG3		(0x22)
>  #define PM800_LDOBK_FREEZE		BIT(7)
> @@ -138,6 +139,13 @@ enum {
>  #define PM800_ALARM			BIT(5)
>  #define PM800_RTC1_USE_XO		BIT(7)
>  
> +#define PM800_32K_OUTX_SEL_MASK		0x3
> +/* 32KHz clk output sel mode */
> +#define PM800_32K_OUTX_SEL_ZERO		0x0
> +#define PM800_32K_OUTX_SEL_INT_32KHZ	0x1
> +#define PM800_32K_OUTX_SEL_XO_32KHZ	0x2
> +#define PM800_32K_OUTX_SEL_HIZ		0x3
> +
>  /* Regulator Control Registers: BUCK1,BUCK5,LDO1 have DVC */
>  
>  /* buck registers */
> @@ -208,6 +216,10 @@ enum {
>  #define PM800_PMOD_MEAS1		0x52
>  #define PM800_PMOD_MEAS2		0x53
>  
> +/* Oscillator control */
> +#define PM800_OSC_CNTRL1		0x50
> +#define PM800_OSC_CNTRL1_OSC_FREERUN_EN	BIT(1)

0x50 goes before 0x52 (and 0x51 if it's there).

>  #define PM800_GPADC0_MEAS1		0x54
>  #define PM800_GPADC0_MEAS2		0x55
>  #define PM800_GPADC1_MEAS1		0x56

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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