linux-kernel - Re: [PATCH v2 2/2] ARM: dts: dra7-evm: Enable CPSW and MDIO for dra7xx EVM

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Date:	Thu, 11 Sep 2014 11:56:00 +0530
From:	Mugunthan V N <mugunthanvnm@...com>
To:	Nishanth Menon <nm@...com>, <bcousson@...libre.com>,
	<tony@...mide.com>
CC:	<devicetree@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] ARM: dts: dra7-evm: Enable CPSW and MDIO for dra7xx
 EVM

On Wednesday 10 September 2014 07:26 PM, Nishanth Menon wrote:
> On 09/10/2014 08:37 AM, Mugunthan V N wrote:
>> Adding CPSW phy-id, CPSW and MDIO pinmux configuration for active and
>> sleep states and enable them in board evm dts file.
>>
>> Signed-off-by: Mugunthan V N <mugunthanvnm@...com>
>> ---
>>  arch/arm/boot/dts/dra7-evm.dts | 107 +++++++++++++++++++++++++++++++++++++++++
>>  1 file changed, 107 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
>> index 50f8022..e5c4e33 100644
>> --- a/arch/arm/boot/dts/dra7-evm.dts
>> +++ b/arch/arm/boot/dts/dra7-evm.dts
>> @@ -151,6 +151,87 @@
>>  			0xd0	(PIN_OUTPUT | MUX_MODE0)	/* gpmc_be0n_cle */
>>  		>;
>>  	};
>> +
>> +	cpsw_default: cpsw_default {
>> +		pinctrl-single,pins = <
>> +			/* Slave 1 */
>> +			0x250 (PIN_OUTPUT | MUX_MODE0)	/* rgmii1_tclk */
>> +			0x254 (PIN_OUTPUT | MUX_MODE0)	/* rgmii1_tctl */
>> +			0x258 (PIN_OUTPUT | MUX_MODE0)	/* rgmii1_td3 */
>> +			0x25c (PIN_OUTPUT | MUX_MODE0)	/* rgmii1_td2 */
>> +			0x260 (PIN_OUTPUT | MUX_MODE0)	/* rgmii1_td1 */
>> +			0x264 (PIN_OUTPUT | MUX_MODE0)	/* rgmii1_td0 */
>> +			0x268 (PIN_INPUT | MUX_MODE0)	/* rgmii1_rclk */
>> +			0x26c (PIN_INPUT | MUX_MODE0)	/* rgmii1_rctl */
>> +			0x270 (PIN_INPUT | MUX_MODE0)	/* rgmii1_rd3 */
>> +			0x274 (PIN_INPUT | MUX_MODE0)	/* rgmii1_rd2 */
>> +			0x278 (PIN_INPUT | MUX_MODE0)	/* rgmii1_rd1 */
>> +			0x27c (PIN_INPUT | MUX_MODE0)	/* rgmii1_rd0 */
> 
> Cant we do this based on emac0 and emac1?

Cant because CPSW is a single ethernet device and dual EMAC is just a
feature done by register two network device.

> 
>> +
>> +			/* Slave 2 */
>> +			0x198 (PIN_OUTPUT | MUX_MODE3)	/* rgmii2_tclk */
> 
> NAK. reason comment style -> we use the style:
>  /* mode0_name.mode3_name */

Will fix this in next version

> 
>> +			0x19c (PIN_OUTPUT | MUX_MODE3)	/* rgmii2_tctl */
>> +			0x1a0 (PIN_OUTPUT | MUX_MODE3)	/* rgmii2_td3 */
>> +			0x1a4 (PIN_OUTPUT | MUX_MODE3)	/* rgmii2_td2 */
>> +			0x1a8 (PIN_OUTPUT | MUX_MODE3)	/* rgmii2_td1 */
>> +			0x1ac (PIN_OUTPUT | MUX_MODE3)	/* rgmii2_td0 */
>> +			0x1b0 (PIN_INPUT | MUX_MODE3)	/* rgmii2_rclk */
>> +			0x1b4 (PIN_INPUT | MUX_MODE3)	/* rgmii2_rctl */
>> +			0x1b8 (PIN_INPUT | MUX_MODE3)	/* rgmii2_rd3 */
>> +			0x1bc (PIN_INPUT | MUX_MODE3)	/* rgmii2_rd2 */
>> +			0x1c0 (PIN_INPUT | MUX_MODE3)	/* rgmii2_rd1 */
>> +			0x1c4 (PIN_INPUT | MUX_MODE3)	/* rgmii2_rd0 */
>> +		>;
>> +
>> +	};
>> +
>> +	cpsw_sleep: cpsw_sleep {
>> +		pinctrl-single,pins = <
>> +			/* Slave 1 */
>> +			0x250 (MUX_MODE15)
>> +			0x254 (MUX_MODE15)
>> +			0x258 (MUX_MODE15)
>> +			0x25c (MUX_MODE15)
>> +			0x260 (MUX_MODE15)
>> +			0x264 (MUX_MODE15)
>> +			0x268 (MUX_MODE15)
>> +			0x26c (MUX_MODE15)
>> +			0x270 (MUX_MODE15)
>> +			0x274 (MUX_MODE15)
>> +			0x278 (MUX_MODE15)
>> +			0x27c (MUX_MODE15)
>> +
>> +			/* Slave 1 */
> ^^ Slave 1?

Will fix this in next version

>> +			0x198 (MUX_MODE15)
>> +			0x19c (MUX_MODE15)
>> +			0x1a0 (MUX_MODE15)
>> +			0x1a4 (MUX_MODE15)
>> +			0x1a8 (MUX_MODE15)
>> +			0x1ac (MUX_MODE15)
>> +			0x1b0 (MUX_MODE15)
>> +			0x1b4 (MUX_MODE15)
>> +			0x1b8 (MUX_MODE15)
>> +			0x1bc (MUX_MODE15)
>> +			0x1c0 (MUX_MODE15)
>> +			0x1c4 (MUX_MODE15)
>> +		>;
>> +	};
>> +
>> +	davinci_mdio_default: davinci_mdio_default {
>> +		pinctrl-single,pins = <
>> +			/* MDIO */
> ^^ you can drop the comment. it is redundant.

Will remove this in next version

>> +			0x23c (PIN_OUTPUT_PULLUP | MUX_MODE0)	/* mdio_data */
>> +			0x240 (PIN_INPUT_PULLUP | MUX_MODE0)	/* mdio_clk */
>> +		>;
>> +	};
>> +
>> +	davinci_mdio_sleep: davinci_mdio_sleep {
>> +		pinctrl-single,pins = <
>> +			0x23c (MUX_MODE15)
>> +			0x240 (MUX_MODE15)
>> +		>;
>> +	};
>> +
>>  };
>>  
>>  &i2c1 {
>> @@ -504,3 +585,29 @@
>>  &usb2_phy2 {
>>  	phy-supply = <&ldousb_reg>;
>>  };
>> +
>> +&mac {
>> +	status = "okay";
>> +	pinctrl-names = "default", "sleep";
>> +	pinctrl-0 = <&cpsw_default>;
>> +	pinctrl-1 = <&cpsw_sleep>;
>> +	dual_emac;
>> +};
>> +
>> +&cpsw_emac0 {
>> +	phy_id = <&davinci_mdio>, <2>;
>> +	phy-mode = "rgmii";
>> +	dual_emac_res_vlan = <1>;
>> +};
>> +
>> +&cpsw_emac1 {
>> +	phy_id = <&davinci_mdio>, <3>;
>> +	phy-mode = "rgmii";
>> +	dual_emac_res_vlan = <2>;
>> +};
>> +
>> +&davinci_mdio {
>> +	pinctrl-names = "default", "sleep";
>> +	pinctrl-0 = <&davinci_mdio_default>;
>> +	pinctrl-1 = <&davinci_mdio_sleep>;
>> +};
>>
> 
> 

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