linux-kernel - Re: [PATCH 6/9] arm64: dts: ti: k3-j721e-beagleboneai64: Add wakeup

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Message-ID: <b1a278fd-4c34-4c6c-aef6-441c22a7aa41@ti.com>
Date:   Thu, 15 Jun 2023 19:08:51 +0530
From:   Vignesh Raghavendra <vigneshr@...com>
To:     Nishanth Menon <nm@...com>, "Kumar, Udit" <u-kumar1@...com>
CC:     Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Tero Kristo <kristo@...nel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Neha Malcom Francis <n-francis@...com>
Subject: Re: [PATCH 6/9] arm64: dts: ti: k3-j721e-beagleboneai64: Add
 wakeup_uart pinmux



On 14/06/23 17:33, Nishanth Menon wrote:
> On 19:26-20230613, Kumar, Udit wrote:
>> Hi Nishanth,
>>
>> On 6/2/2023 12:01 AM, Nishanth Menon wrote:
>>> Define the wakeup uart pin-mux for completeness. This allows the
>>> device tree usage in bootloader and firmwares that can configure the
>>> same appropriately.
>>>
>>> Signed-off-by: Nishanth Menon <nm@...com>
>>> ---
>>>   arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts | 9 +++++++++
>>>   1 file changed, 9 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
>>> index c13246a9ed8f..bc53ca566a68 100644
>>> --- a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
>>> +++ b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
>>> @@ -531,6 +531,13 @@ J721E_WKUP_IOPAD(0xfc, PIN_INPUT_PULLUP, 0) /* (H24) WKUP_I2C0_SDA */
>>>   		>;
>>>   	};
>>> +	wkup_uart0_pins_default: wkup-uart0-pins-default {
>>> +		pinctrl-single,pins = <
>>> +			J721E_WKUP_IOPAD(0xa0, PIN_INPUT, 0) /* (J29) WKUP_UART0_RXD */
>>> +			J721E_WKUP_IOPAD(0xa4, PIN_OUTPUT, 0) /* (J28) WKUP_UART0_TXD */
>>> +		>;
>>> +	};
>>> +
>>>   	mcu_usbss1_pins_default: mcu-usbss1-pins-default {
>>>   		pinctrl-single,pins = <
>>>   			J721E_WKUP_IOPAD(0x3c, PIN_OUTPUT_PULLUP, 5) /* (A23) MCU_OSPI1_LBCLKO.WKUP_GPIO0_30 */
>>> @@ -541,6 +548,8 @@ J721E_WKUP_IOPAD(0x3c, PIN_OUTPUT_PULLUP, 5) /* (A23) MCU_OSPI1_LBCLKO.WKUP_GPIO
>>>   &wkup_uart0 {
>>>   	/* Wakeup UART is used by TIFS firmware. */
>>>   	status = "reserved";
>>> +	pinctrl-names = "default";
>>> +	pinctrl-0 = <&wkup_uart0_pins_default>;
>>>   };
>>
>>
>> If you like to consider alias for wkup_uart0 for this board ,
>>
>> Just to align with other boards for this SOC family.  I understand
>> wkup_uart0 is not being used.
> 
> Vignesh,
> could you squash this locally OR if you like, I can post a v2:
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
> index 3304460f6a0b..9922d7bb061f 100644
> --- a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
> @@ -20,6 +20,7 @@ / {
>  	model = "BeagleBoard.org BeagleBone AI-64";
>  
>  	aliases {
> +		serial0 = &wkup_uart0;
>  		serial2 = &main_uart0;
>  		mmc0 = &main_sdhci0;
>  		mmc1 = &main_sdhci1;
> 

Squashed locally before queuing, no need to resend

-- 
Regards
Vignesh