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Date:   Thu, 13 May 2021 18:05:06 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Nishanth Menon <nm@...com>
CC:     Tero Kristo <kristo@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Lokesh Vutla <lokeshvutla@...com>, <a-govindraju@...com>
Subject: Re: [PATCH 4/5] arm64: dts: ti: k3-am642-sk: Enable USB Super-Speed
 HOST port

Hi Nishanth,

On 13/05/21 1:10 am, Nishanth Menon wrote:
> On 20:31-20210512, Kishon Vijay Abraham I wrote:
>> Enable USB Super-Speed HOST port.
>>
>> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
>> Signed-off-by: Aswath Govindraju <a-govindraju@...com>
>> ---
>>  arch/arm64/boot/dts/ti/k3-am642-sk.dts | 39 ++++++++++++++++++++++++++
>>  1 file changed, 39 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
>> index 8424cd071955..056c1b2df559 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
>> +++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
>> @@ -5,6 +5,8 @@
>>  
>>  /dts-v1/;
>>  
>> +#include <dt-bindings/mux/ti-serdes.h>
>> +#include <dt-bindings/phy/phy.h>
>>  #include <dt-bindings/gpio/gpio.h>
>>  #include <dt-bindings/net/ti-dp83867.h>
>>  #include "k3-am642.dtsi"
>> @@ -85,6 +87,12 @@
>>  		>;
>>  	};
>>  
>> +	main_usb0_pins_default: main-usb0-pins-default {
>> +		pinctrl-single,pins = <
>> +			AM64X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (E19) USB0_DRVVBUS */
>> +		>;
>> +	};
>> +
>>  	main_i2c1_pins_default: main-i2c1-pins-default {
>>  		pinctrl-single,pins = <
>>  			AM64X_IOPAD(0x0268, PIN_INPUT_PULLUP, 0) /* (C18) I2C1_SCL */
>> @@ -235,6 +243,37 @@
>>  	disable-wp;
>>  };
>>  
>> +&serdes_ln_ctrl {
>> +	idle-states = <AM64_SERDES0_LANE0_USB>;
>> +};
>> +
>> +&serdes_wiz0 {
>> +	status = "okay";
> 
> 
> not sure I understand why default of okay needs to be explicitly stated
> as okay in board dts.

hmm, not required. Will remove it.

Thanks
Kishon

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