linux-kernel - Re: [PATCH v4 6/7] ARM: zynq: DT: Add pinctrl information

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Date:	Tue, 27 Jan 2015 00:57:00 +0100
From:	Andreas Färber <afaerber@...e.de>
To:	Soren Brinkmann <soren.brinkmann@...inx.com>,
	Linus Walleij <linus.walleij@...aro.org>
CC:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	devicetree@...r.kernel.org,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Heiko Stuebner <heiko@...ech.de>, linux-sh@...r.kernel.org,
	Bjorn Andersson <bjorn.andersson@...ymobile.com>,
	Michal Simek <michal.simek@...inx.com>,
	linux-kernel@...r.kernel.org,
	Beniamino Galvani <b.galvani@...il.com>,
	linux-rockchip@...ts.infradead.org,
	"Ivan T. Ivanov" <iivanov@...sol.com>,
	Kumar Gala <galak@...eaurora.org>,
	Grant Likely <grant.likely@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	Alessandro Rubini <rubini@...pv.it>
Subject: Re: [PATCH v4 6/7] ARM: zynq: DT: Add pinctrl information

Am 09.01.2015 um 16:43 schrieb Soren Brinkmann:
> Add pinctrl descriptions to the zc702 and zc706 device trees.
> 
> Signed-off-by: Soren Brinkmann <soren.brinkmann@...inx.com>
> Tested-by: Andreas Färber <afaerber@...e.de>
> ---
> Changes since v1:
>  - remove 'pinctrl-' prefix for pinctrl sub-nodes
>  - separate config and mux nodes
> 
> Changes since RFC v2:
>  - add pinconf properties to zc702 mdio node
>  - remove arguments from bias-related props
> 
> Changes since RFC v1:
>  - separate DT changes into their own patch
> ---
>  arch/arm/boot/dts/zynq-7000.dtsi |   8 +-
>  arch/arm/boot/dts/zynq-zc702.dts | 181 +++++++++++++++++++++++++++++++++++++++
>  arch/arm/boot/dts/zynq-zc706.dts | 152 ++++++++++++++++++++++++++++++++
>  3 files changed, 340 insertions(+), 1 deletion(-)
[...]
> diff --git a/arch/arm/boot/dts/zynq-zc702.dts b/arch/arm/boot/dts/zynq-zc702.dts
> index 280f02dd4ddc..4995412f116f 100644
> --- a/arch/arm/boot/dts/zynq-zc702.dts
> +++ b/arch/arm/boot/dts/zynq-zc702.dts
[...]
> @@ -50,15 +52,24 @@
>  	status = "okay";
>  	phy-mode = "rgmii-id";
>  	phy-handle = <&ethernet_phy>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_gem0_default>;
>  
>  	ethernet_phy: ethernet-phy@7 {
>  		reg = <7>;
>  	};
>  };
>  
> +&gpio0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_gpio0_default>;

On linux-next the equivalent no longer works for the Parallella, with
gpio failing to probe.

If I move these two properties to the leds node (for which I am
configuring gpio 7) then I get a heartbeat as before.

Regards,
Andreas

> +};
> +
>  &i2c0 {
>  	status = "okay";
>  	clock-frequency = <400000>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_i2c0_default>;
>  
>  	i2cswitch@74 {
>  		compatible = "nxp,pca9548";
> @@ -132,10 +143,180 @@
>  	};
>  };
>  
> +&pinctrl0 {
[...]
> +	pinctrl_gpio0_default: gpio0-default {
> +		mux {
> +			function = "gpio0";
> +			groups = "gpio0_7_grp", "gpio0_8_grp", "gpio0_9_grp",
> +				 "gpio0_10_grp", "gpio0_11_grp", "gpio0_12_grp",
> +				 "gpio0_13_grp", "gpio0_14_grp";
> +		};
> +
> +		conf {
> +			groups = "gpio0_7_grp", "gpio0_8_grp", "gpio0_9_grp",
> +				 "gpio0_10_grp", "gpio0_11_grp", "gpio0_12_grp",
> +				 "gpio0_13_grp", "gpio0_14_grp";
> +			slew-rate = <0>;
> +			io-standard = <1>;
> +		};
> +
> +		conf-pull-up {
> +			pins = "MIO9", "MIO10", "MIO11", "MIO12", "MIO13", "MIO14";
> +			bias-pull-up;
> +		};
> +
> +		conf-pull-none {
> +			pins = "MIO7", "MIO8";
> +			bias-disable;
> +		};
> +	};
[...]
> +};
> +
>  &sdhci0 {
>  	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_sdhci0_default>;
>  };
>  
>  &uart1 {
>  	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_uart1_default>;
>  };
[dito for zc706]

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