From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-43171.protonmail.ch (mail-43171.protonmail.ch [185.70.43.171]) (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 D1FA5477999 for ; Wed, 15 Jul 2026 12:53:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.70.43.171 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784120005; cv=none; b=jLEOJwjsjc0P4s3di8mi7tqpKBhPTJDYym895iHcuWSBOsQn5xHPJrsHT7JC10VGMjwHJvAu0UGG3oZ+K/mObggCJXQ2NCp2FWvGQx9hqI572t0YsoMhHsTU9BnkjpgRzIFlvmI6SqhomU9fbDxy43zXLPlpy07bXhB1ZizbFeA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784120005; c=relaxed/simple; bh=xEwViipQaJZVXM9xLdF3SH6nxkka6iIr7lgTdrGkvYI=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=aMFqjBc5gxeDMYVxM4zUV7gLX+SbzGkQj2yAneexUQG+VD7oG54gnlZZsdoKJdju+CEN9OlXZRwIM/MKiWArpeVR9OA0D5chqv+MGKFd2pRrPn3GfU4giO4pMEoFKuwnRwqhGyrSlrY198pikii+t8yQFLHvfSAYUoekbWwSOhc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=geanix.com; spf=pass smtp.mailfrom=geanix.com; dkim=pass (2048-bit key) header.d=geanix.com header.i=@geanix.com header.b=Oxj58E8W; arc=none smtp.client-ip=185.70.43.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=geanix.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=geanix.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=geanix.com header.i=@geanix.com header.b="Oxj58E8W" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=geanix.com; s=protonmail3; t=1784119998; x=1784379198; bh=xEwViipQaJZVXM9xLdF3SH6nxkka6iIr7lgTdrGkvYI=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID:From:To: Cc:Date:Subject:Reply-To:Feedback-ID:Message-ID:BIMI-Selector; b=Oxj58E8W3hKQZu0gvkYqCUZNpfUbBQ78VVenN6g9RIw4JHwjrEft/SGwCNV63zM7a 2Q7xDkapC/pwRDIyAOJX+qhgp7mkaYQ1WRaknqg0zER/f8uics62usPnCFmLtM++hz chlq7llvfrhyONj4ef/FcqTEwPVbOJEW8CHgUmMXqrRzQU9CN4tVdvulv/1XxFgLSu fY64gkXv2/1oav9kvx/MgaFCP/rf2z7oobqsuuBKCEb5kUSI63K81kkyuM6Wggw/H6 /+5ORu5ZuFxMRgJD7ayok7sl81etN/EQmzfVHek4fpQ7OP3pU+uq+23iCpjeLRS4kv CMe7pHG2/1yQA== X-Pm-Submission-Id: 4h0bgw0Q0rz1DFTS From: Esben Haabendal To: Gary Bisson Cc: Chun-Kuang Hu , Philipp Zabel , David Airlie , Simona Vetter , Matthias Brugger , AngeloGioacchino Del Regno , dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH] drm/mediatek: mtk_dsi: enable hs clock during pre-enable In-Reply-To: <20260120-mtkdsi-v1-1-b0f4094f3ac3@gmail.com> (Gary Bisson's message of "Tue, 20 Jan 2026 12:36:59 +0100") References: <20260120-mtkdsi-v1-1-b0f4094f3ac3@gmail.com> Date: Wed, 15 Jul 2026 14:53:15 +0200 Message-ID: <8733xko1ms.fsf@geanix.com> User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Gary Bisson writes: > Some bridges, such as the TI SN65DSI83, require the HS clock to be > running in order to lock its PLL during its own pre-enable function. > > Without this change, the bridge gives the following error: > sn65dsi83 14-002c: failed to lock PLL, ret=-110 > sn65dsi83 14-002c: Unexpected link status 0x01 > sn65dsi83 14-002c: reset the pipe > > Move the necessary functions from enable to pre-enable. > > Signed-off-by: Gary Bisson Hi I have run into the same problem, but in combination with another pipeline. I am seeing same problem with an i.MX8 using the nwl-dsi bridge and the dcss driver. I have submitted a fix that adresses the problem in the ti-sn65dsi83 driver instead. With a bit of luck, it can replace the fix proposed in this thread. See https://lore.kernel.org/all/20260711-ti-sn65dsi83-fixes-v1-2-d85eb5342b98@geanix.com/ /Esben