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Wed, 16 Jul 2025 00:42:26 -0500 Received: from DFLE102.ent.ti.com (10.64.6.23) by DFLE105.ent.ti.com (10.64.6.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.55; Wed, 16 Jul 2025 00:42:26 -0500 Received: from lelvem-mr06.itg.ti.com (10.180.75.8) by DFLE102.ent.ti.com (10.64.6.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.55 via Frontend Transport; Wed, 16 Jul 2025 00:42:26 -0500 Received: from [172.24.227.166] (jayesh-hp-z2-tower-g5-workstation.dhcp.ti.com [172.24.227.166]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 56G5gMBn3807419; Wed, 16 Jul 2025 00:42:23 -0500 Message-ID: <710b546f-f898-4b20-8302-db0de69a3d80@ti.com> Date: Wed, 16 Jul 2025 11:12:22 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 6/7] arm64: dts: ti: k3-j721s2-common-proc-board: Enable DisplayPort-1 To: "Kumar, Udit" , , , CC: , , , , , , References: <20250624082619.324851-1-j-choudhary@ti.com> <20250624082619.324851-7-j-choudhary@ti.com> Content-Language: en-US From: Jayesh Choudhary In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea Hello Udit, On 26/06/25 16:04, Kumar, Udit wrote: > > On 6/24/2025 1:56 PM, Jayesh Choudhary wrote: >> Enable DSI display for J721S2 EVM. >> >> Add the endpoint nodes to describe connection from: >> DSS => DSI Bridge => DSI to eDP bridge => DisplayPort-1 >> >> Set status for all required nodes for DisplayPort-1 as 'okay'. >> >> Signed-off-by: Jayesh Choudhary >> --- >>   .../dts/ti/k3-j721s2-common-proc-board.dts    | 89 +++++++++++++++++++ >>   1 file changed, 89 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts >> b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts >> index 793d50344fad..efe857a50bb1 100644 >> --- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts >> +++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts >> @@ -93,6 +93,29 @@ vdd_sd_dv: gpio-regulator-TLV71033 { >>                <3300000 0x1>; >>       }; >> +    dp1_pwr_3v3: regulator-dp1-prw { >> +        compatible = "regulator-fixed"; >> +        regulator-name = "dp1-pwr"; >> +        regulator-min-microvolt = <3300000>; >> +        regulator-max-microvolt = <3300000>; >> +        gpio = <&exp4 1 GPIO_ACTIVE_HIGH>; /* P1 - DP1_PWR_SW_EN */ >> +        enable-active-high; >> +        regulator-always-on; > > Please check once, if this regulator falls under regulator-always-on case, > > I can imagine a case, where DP1 is not used and still regulator is kept on Yes it is not required. I will remove this property from j721s2-common-proc-board and am68-sk board dts. Thanks, Jayesh > > >> +    }; >> + >> +    dp1: connector-dp1 { >> +        compatible = "dp-connector"; [...]