linux-kernel - Re: [PATCH v4] ARM: davinci: da850: add EHRPWM & ECAP DT node

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Date:	Wed, 10 Apr 2013 17:05:24 +0530
From:	Sekhar Nori <nsekhar@...com>
To:	Philip Avinash <avinashphilip@...com>
CC:	<linux@....linux.org.uk>, <thierry.reding@...onic-design.de>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>,
	<davinci-linux-open-source@...ux.davincidsp.com>,
	<prakash.pm@...com>, <jacmet@...site.dk>
Subject: Re: [PATCH v4] ARM: davinci: da850: add EHRPWM & ECAP DT node

Avinash,

On 4/10/2013 1:32 PM, Philip Avinash wrote:
> Add da850 EHRPWM & ECAP DT node along with pin-mux details for EHRPWM1.
> Also adds OF_DEV_AUXDATA for EHRPWM & ECAP driver to use EHRPWM & ECAP
> clock.
> 
> Signed-off-by: Philip Avinash <avinashphilip@...com>
> ---
> Changes since v3:
> 	- add pin mux info for EHRPWM1.

I think you misunderstood what I asked. Please add pinmux information
for all the nodes you are adding (ecap0-2 and ehrpwm0). Without pinmux
setup, these IPs cannot be used anyway. So why leave just the pinmux to
be added by someone else?

Thanks,
Sekhar

> 
> Changes since v1:
> 	- Reusing ti,am33xx<ecap/ehrpwm> as compatible field as both IP's are
> 	  similar with am33xx platform and da850 has no platform specific
> 	  dependency.
> 
>  arch/arm/boot/dts/da850.dtsi     |   42 ++++++++++++++++++++++++++++++++++++++
>  arch/arm/mach-davinci/da8xx-dt.c |    5 +++++
>  2 files changed, 47 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
> index 3ade343..3bff30d 100644
> --- a/arch/arm/boot/dts/da850.dtsi
> +++ b/arch/arm/boot/dts/da850.dtsi
> @@ -71,6 +71,18 @@
>  					0x28 0x00222222  0x00ffffff
>  				>;
>  			};
> +			ehrpwm1a_pins: pinmux_ehrpwm1a_pins {
> +				pinctrl-single,bits = <
> +					/* EPWM1A */
> +					0x14 0x00000002 0x0000000f
> +				>;
> +			};
> +			ehrpwm1b_pins: pinmux_ehrpwm1b_pins {
> +				pinctrl-single,bits = <
> +					/* EPWM1B */
> +					0x14 0x00000020 0x000000f0
> +				>;
> +			};
>  		};
>  		serial0: serial@...2000 {
>  			compatible = "ns16550a";
> @@ -122,6 +134,36 @@
>  			interrupts = <16>;
>  			status = "disabled";
>  		};
> +		ehrpwm0: ehrpwm@...00000 {
> +			compatible = "ti,da850-ehrpwm", "ti,am33xx-ehrpwm";
> +			#pwm-cells = <3>;
> +			reg = <0x300000 0x2000>;
> +			status = "disabled";
> +		};
> +		ehrpwm1: ehrpwm@...02000 {
> +			compatible = "ti,da850-ehrpwm", "ti,am33xx-ehrpwm";
> +			#pwm-cells = <3>;
> +			reg = <0x302000 0x2000>;
> +			status = "disabled";
> +		};
> +		ecap0: ecap@...06000 {
> +			compatible = "ti,da850-ecap", "ti,am33xx-ecap";
> +			#pwm-cells = <3>;
> +			reg = <0x306000 0x80>;
> +			status = "disabled";
> +		};
> +		ecap1: ecap@...07000 {
> +			compatible = "ti,da850-ecap", "ti,am33xx-ecap";
> +			#pwm-cells = <3>;
> +			reg = <0x307000 0x80>;
> +			status = "disabled";
> +		};
> +		ecap2: ecap@...08000 {
> +			compatible = "ti,da850-ecap", "ti,am33xx-ecap";
> +			#pwm-cells = <3>;
> +			reg = <0x308000 0x80>;
> +			status = "disabled";
> +		};
>  	};
>  	nand_cs3@...00000 {
>  		compatible = "ti,davinci-nand";
> diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c
> index d83de8f..05bb9a2 100644
> --- a/arch/arm/mach-davinci/da8xx-dt.c
> +++ b/arch/arm/mach-davinci/da8xx-dt.c
> @@ -41,6 +41,11 @@ struct of_dev_auxdata da850_auxdata_lookup[] __initdata = {
>  	OF_DEV_AUXDATA("ti,davinci-i2c", 0x01c22000, "i2c_davinci.1", NULL),
>  	OF_DEV_AUXDATA("ti,davinci-wdt", 0x01c21000, "watchdog", NULL),
>  	OF_DEV_AUXDATA("ti,da830-mmc", 0x01c40000, "da830-mmc.0", NULL),
> +	OF_DEV_AUXDATA("ti,da850-ehrpwm", 0x01f00000, "ehrpwm", NULL),
> +	OF_DEV_AUXDATA("ti,da850-ehrpwm", 0x01f02000, "ehrpwm", NULL),
> +	OF_DEV_AUXDATA("ti,da850-ecap", 0x01f06000, "ecap", NULL),
> +	OF_DEV_AUXDATA("ti,da850-ecap", 0x01f07000, "ecap", NULL),
> +	OF_DEV_AUXDATA("ti,da850-ecap", 0x01f08000, "ecap", NULL),
>  	{}
>  };
>  
> 
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