linux-kernel - RE: [PATCH v3 02/10] ARM: am33xx: clk: Add optional clock for EHRPWM

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Date:	Fri, 23 Nov 2012 11:03:50 +0000
From:	"Philip, Avinash" <avinashphilip@...com>
To:	"thierry.reding@...onic-design.de" <thierry.reding@...onic-design.de>,
	"paul@...an.com" <paul@...an.com>,
	"tony@...mide.com" <tony@...mide.com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"Cousson, Benoit" <b-cousson@...com>
CC:	"Hiremath, Vaibhav" <hvaibhav@...com>,
	"AnilKumar, Chimata" <anilkumar@...com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"Nori, Sekhar" <nsekhar@...com>,
	"Hebbar, Gururaja" <gururaja.hebbar@...com>,
	"Bedia, Vaibhav" <vaibhav.bedia@...com>
Subject: RE: [PATCH v3 02/10] ARM: am33xx: clk: Add optional clock for EHRPWM

On Tue, Nov 20, 2012 at 10:33:43, Philip, Avinash wrote:
> EHRPWM module requires explicit clock gating from control module.
> Hence add clock node in clock tree for EHRPWM modules.
> 

Is there any review on this patch?
This patch depends on EHRPWM to work in am335x.

Thanks
Avinash
> Signed-off-by: Philip, Avinash <avinashphilip@...com>
> ---
> :100644 100644 17e3de5... 833260f... M	arch/arm/mach-omap2/clock33xx_data.c
> :100644 100644 a89e825... c0e34e6... M	arch/arm/mach-omap2/control.h
>  arch/arm/mach-omap2/clock33xx_data.c |   37 ++++++++++++++++++++++++++++++++++
>  arch/arm/mach-omap2/control.h        |    8 +++++++
>  2 files changed, 45 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/mach-omap2/clock33xx_data.c b/arch/arm/mach-omap2/clock33xx_data.c
> index 17e3de5..833260f 100644
> --- a/arch/arm/mach-omap2/clock33xx_data.c
> +++ b/arch/arm/mach-omap2/clock33xx_data.c
> @@ -995,6 +995,40 @@ static struct clk wdt1_fck = {
>  };
>  
>  /*
> + * PWMSS Time based module clock node. This node is
> + * requred to enable clock gating for EHRPWM TBCLK.
> + */
> +static struct clk ehrpwm0_tbclk = {
> +	.name		= "ehrpwm0_tbclk",
> +	.clkdm_name	= "l4ls_clkdm",
> +	.enable_reg	= AM33XX_CTRL_REGADDR(AM33XX_PWMSS_TBCLK_CLKCTRL),
> +	.enable_bit	= AM33XX_PWMSS0_TBCLKEN_SHIFT,
> +	.ops		= &clkops_omap2_dflt,
> +	.parent		= &l4ls_gclk,
> +	.recalc		= &followparent_recalc,
> +};
> +
> +static struct clk ehrpwm1_tbclk = {
> +	.name		= "ehrpwm1_tbclk",
> +	.clkdm_name	= "l4ls_clkdm",
> +	.enable_reg	= AM33XX_CTRL_REGADDR(AM33XX_PWMSS_TBCLK_CLKCTRL),
> +	.enable_bit	= AM33XX_PWMSS1_TBCLKEN_SHIFT,
> +	.ops		= &clkops_omap2_dflt,
> +	.parent		= &l4ls_gclk,
> +	.recalc		= &followparent_recalc,
> +};
> +
> +static struct clk ehrpwm2_tbclk = {
> +	.name		= "ehrpwm2_tbclk",
> +	.clkdm_name	= "l4ls_clkdm",
> +	.enable_reg	= AM33XX_CTRL_REGADDR(AM33XX_PWMSS_TBCLK_CLKCTRL),
> +	.enable_bit	= AM33XX_PWMSS2_TBCLKEN_SHIFT,
> +	.ops		= &clkops_omap2_dflt,
> +	.parent		= &l4ls_gclk,
> +	.recalc		= &followparent_recalc,
> +};
> +
> +/*
>   * clkdev
>   */
>  static struct omap_clk am33xx_clks[] = {
> @@ -1074,6 +1108,9 @@ static struct omap_clk am33xx_clks[] = {
>  	CLK(NULL,	"clkout2_ck",		&clkout2_ck,	CK_AM33XX),
>  	CLK(NULL,	"timer_32k_ck",		&clkdiv32k_ick,	CK_AM33XX),
>  	CLK(NULL,	"timer_sys_ck",		&sys_clkin_ck,	CK_AM33XX),
> +	CLK(NULL,	"ehrpwm0_tbclk",	&ehrpwm0_tbclk,	CK_AM33XX),
> +	CLK(NULL,	"ehrpwm1_tbclk",	&ehrpwm1_tbclk,	CK_AM33XX),
> +	CLK(NULL,	"ehrpwm2_tbclk",	&ehrpwm2_tbclk,	CK_AM33XX),
>  };
>  
>  int __init am33xx_clk_init(void)
> diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h
> index a89e825..c0e34e6 100644
> --- a/arch/arm/mach-omap2/control.h
> +++ b/arch/arm/mach-omap2/control.h
> @@ -357,6 +357,14 @@
>  #define AM33XX_CONTROL_STATUS_SYSBOOT1_WIDTH		0x2
>  #define AM33XX_CONTROL_STATUS_SYSBOOT1_MASK		(0x3 << 22)
>  
> +/* AM33XX PWMSS Control register */
> +#define AM33XX_PWMSS_TBCLK_CLKCTRL			0x664
> +
> +/* AM33XX  PWMSS Control bitfields */
> +#define AM33XX_PWMSS0_TBCLKEN_SHIFT			0
> +#define AM33XX_PWMSS1_TBCLKEN_SHIFT			1
> +#define AM33XX_PWMSS2_TBCLKEN_SHIFT			2
> +
>  /* CONTROL OMAP STATUS register to identify OMAP3 features */
>  #define OMAP3_CONTROL_OMAP_STATUS	0x044c
>  
> -- 
> 1.7.0.4
> 
> 

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