From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fllvem-ot03.ext.ti.com (fllvem-ot03.ext.ti.com [198.47.19.245]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C60762F99B6; Wed, 13 Aug 2025 19:32:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.47.19.245 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755113578; cv=none; b=l4CwzRYN2fsPcyIspHEzMoMVTi8FhaE4o9p+3Tudl4luEAVxEDBuQ7d91qbOGqXY85jrPKSLNCbD7ADK3D6aTFvOplv3ADzTyV/RjNzgHk+nw+yNAux8Hs/Elje6v24SSa13rL4+5BNyK07FLWtf+SyfgP+bEThQlo3j8Byc2Jw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755113578; c=relaxed/simple; bh=UoheP3ZVKVuzy/5xTOCBbET/5uwxVm9sgpUlK6W22Mo=; h=Message-ID:Date:MIME-Version:Subject:To:CC:References:From: In-Reply-To:Content-Type; b=He4E6jG7H5y+50JIzXeaRmaHnMHfx0lgCyitW31OwkvLQtXzv3UwYdRi/HjV8BktOhI5g6EoWK6KF51EkD3lzXnWUzshhMoA/dBR0GTUodmlynKDEefQEPilFgPNxsuXDADwu+RWXlXMjzGFoaAvbh7Q4z7HGDtpa4x5skIC/3Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com; spf=pass smtp.mailfrom=ti.com; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b=S1eTEko5; arc=none smtp.client-ip=198.47.19.245 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ti.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="S1eTEko5" Received: from fllvem-sh03.itg.ti.com ([10.64.41.86]) by fllvem-ot03.ext.ti.com (8.15.2/8.15.2) with ESMTP id 57DJWmAU1716526; Wed, 13 Aug 2025 14:32:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1755113568; bh=DP9g1YaqAXl0Ni9gsYFNtLPP9+dGOYc408wFaAfyNxk=; h=Date:Subject:To:CC:References:From:In-Reply-To; b=S1eTEko5c2sZbfSUg6KnuhOl17TYUJOCUJlWkOy0ytuw1KEQtzWIYVR/17Zm52U/Y Z4XCh/E1/DuCFmzHizFEZYlEIELlYyR2Fssp6Tbb0E4rAFr6bja9ZlIIgAX3trhAeE PXLDnKHbXe5AaAeWlOWwJID8gzemcIMIqp1SskWU= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by fllvem-sh03.itg.ti.com (8.18.1/8.18.1) with ESMTPS id 57DJWlfB612929 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA256 bits=128 verify=FAIL); Wed, 13 Aug 2025 14:32:48 -0500 Received: from DFLE112.ent.ti.com (10.64.6.33) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.55; Wed, 13 Aug 2025 14:32:47 -0500 Received: from lelvem-mr06.itg.ti.com (10.180.75.8) by DFLE112.ent.ti.com (10.64.6.33) 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, 13 Aug 2025 14:32:47 -0500 Received: from [10.249.42.149] ([10.249.42.149]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 57DJWkYE2476900; Wed, 13 Aug 2025 14:32:46 -0500 Message-ID: <4c6a7db0-dc75-4ed1-aeae-418fa004ea53@ti.com> Date: Wed, 13 Aug 2025 14:32:45 -0500 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] drm/bridge: it66121: Add it66122 support To: Nishanth Menon , Conor Dooley , Krzysztof Kozlowski , Rob Herring , David Airlie , Maxime Ripard , Laurent Pinchart , Neil Armstrong CC: , , , Robert Nelson , Jason Kridner References: <20250813190835.344563-1-nm@ti.com> Content-Language: en-US From: Andrew Davis In-Reply-To: <20250813190835.344563-1-nm@ti.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea On 8/13/25 2:08 PM, Nishanth Menon wrote: > Hi, > > Add support for IT66122, which for all practical purposes is > drop in replacement for IT66121 except for the ID register > definition. > > BeagleY-AI uses this new part as the old part is no longer in production > as far as I understand. > > Now, BeaglePlay uses it66121 at the moment, but at some point, it might > end up flipping over to the new part. > > An alternate implementation could be to drop the revision check or make > it66121 check include alternate ID check.. but that seems a little > non-standard.. Anyways, I suppose mediatek platforms will face this > problem as well at some point. > Hmmm, since these boards will probably have to switch parts mid-production it would cause us to need to have a new DT with the updated compatible just for a otherwise transparent revision. Might be better to just loosen the PID check so the alternative part work just the same. Andrew > Nishanth Menon (2): > dt-bindings: display: bridge: it66121: Add compatible string for > IT66122 > drm/bridge: it66121: Add it66122 support > > .../devicetree/bindings/display/bridge/ite,it66121.yaml | 1 + > drivers/gpu/drm/bridge/ite-it66121.c | 8 ++++++++ > 2 files changed, 9 insertions(+) >