[U-Boot] [PATCH v3 3/7] pwm: imx: Enable PWM support on i.MX53

[Martyn Welch]

On Wed, 2017-11-01 at 16:31 +0100, Stefano Babic wrote:
> On 01/11/2017 15:23, Martyn Welch wrote:
> > Add missing parts for i.MX53 PWM support
> > 
> > Acked-by: Nandor Han <nandor.han at ge.com>
> > Signed-off-by: Martyn Welch <martyn.welch at collabora.co.uk>
> > Cc: Stefano Babic <sbabic at denx.de>
> > ---
> >  arch/arm/include/asm/arch-mx5/imx-regs.h | 19 +++++++++++++++++++
> >  drivers/pwm/pwm-imx-util.c               |  2 ++
> >  2 files changed, 21 insertions(+)
> > 
> > diff --git a/arch/arm/include/asm/arch-mx5/imx-regs.h b/arch/arm/include/asm/arch-mx5/imx-regs.h
> > index 3e79fa3..c2ff798 100644
> > --- a/arch/arm/include/asm/arch-mx5/imx-regs.h
> > +++ b/arch/arm/include/asm/arch-mx5/imx-regs.h
> > @@ -508,6 +508,25 @@ struct fuse_bank4_regs {
> >  };
> >  #endif
> >  
> > +#if defined(CONFIG_MX53)
> 
> It looks to me this is not MX53 specific. You are already changing a MX5
> file. As far as I see, this is valid at least for MX51. Do we need the
> #ifdef ?
> 

I only have access to an MX53, I'm not familiar with the rest of the MX5
family and was thus playing it safe.

> > +#define PWMCR_PRESCALER(x)	(((x - 1) & 0xFFF) << 4)
> > +#define PWMCR_DOZEEN		(1 << 24)
> > +#define PWMCR_WAITEN		(1 << 23)
> > +#define PWMCR_DBGEN		(1 << 22)
> > +#define PWMCR_CLKSRC_IPG_HIGH	(2 << 16)
> > +#define PWMCR_CLKSRC_IPG	(1 << 16)
> > +#define PWMCR_EN		(1 << 0)
> > +
> > +struct pwm_regs {
> > +	u32	cr;
> > +	u32	sr;
> > +	u32	ir;
> > +	u32	sar;
> > +	u32	pr;
> > +	u32	cnr;
> > +};
> > +#endif
> > +
> >  #endif /* __ASSEMBLER__*/
> >  
> >  #endif				/* __ASM_ARCH_MX5_IMX_REGS_H__ */
> > diff --git a/drivers/pwm/pwm-imx-util.c b/drivers/pwm/pwm-imx-util.c
> > index 534dd8e..97ac0c8 100644
> > --- a/drivers/pwm/pwm-imx-util.c
> > +++ b/drivers/pwm/pwm-imx-util.c
> > @@ -23,10 +23,12 @@ struct pwm_regs *pwm_id_to_reg(int pwm_id)
> >  		return (struct pwm_regs *)PWM1_BASE_ADDR;
> >  	case 1:
> >  		return (struct pwm_regs *)PWM2_BASE_ADDR;
> > +#ifdef CONFIG_MX6
> >  	case 2:
> >  		return (struct pwm_regs *)PWM3_BASE_ADDR;
> >  	case 3:
> >  		return (struct pwm_regs *)PWM4_BASE_ADDR;
> > +#endif
> >  #ifdef CONFIG_MX6SX
> >  	case 4:
> >  		return (struct pwm_regs *)PWM5_BASE_ADDR;
> > 
> 
> 
> Best regards,
> Stefano Babic
>