From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AC726C2BD09 for ; Mon, 24 Jun 2024 12:04:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=L9SqzLwnyFw9O0cjx7JztMLALTgKK8TJgRcvzOsBlc4=; b=rLdvzKgrH4YrZdz1zsVAmPRKqs G0CRcOQ12LkNzXp8OdHBTdzjueCdMebozsq6zaFMHlUDfQlTyZg4smM9xwnyRBFnNiLuwWZ5dbFbb WPHW58qOKOo4rl2UYe4xkmASCixRPgsSR60w7WwCkDcIx+IW9dcgOtzNo2xj7zODvKOX3jBXNEJYX ENKWWiq0D3hr8AH3HcfWJYFOo7PmH7cRwdPU7M3sMiEFfml3ZRtw1E0Dd0aKDAQlVhbBVEHZnt/8F 5+1TmlIMUUJ+HKFIjTewxI2JocfYOzI3f3LHn/peFhkw5fZxAg6QVa62mLtv7NEkleIGPHqL8ROj1 CnWh0bVw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sLiQV-0000000Ghwq-1dkZ; Mon, 24 Jun 2024 12:04:03 +0000 Received: from mx1.tq-group.com ([93.104.207.81]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sLiQP-0000000Ghw1-0FTs for linux-arm-kernel@lists.infradead.org; Mon, 24 Jun 2024 12:03:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1719230637; x=1750766637; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=L9SqzLwnyFw9O0cjx7JztMLALTgKK8TJgRcvzOsBlc4=; b=arYu22GZ3/CKDTA2tPV68FXEc1hoIqUndvKtIY5PQgY0fGygdVT4yRFm OP429xVKOVs46an5wu6jO6S7hFXrrTCUj7xAVXdGmeE+WI362etVClgYf eMe3d8uytjfcgFQQXOq6g26k+JVbmXorTPslJGKlknjim9vCXj6yk5Ria pk1V90FrZ3x2w8+EQaH7pJN9mzIqDXATnvT6jPvATasdcSbQJTTpwfTB6 MrmbGOF8YbQzuW53sSp0CboRnRuTblUfjsTsBJf65EQRVDklFQ29JhZdx jW3tZvJXwVjUISmHPauMXpHqPZZJOUCxONU0lJt9N0dv0N4JU+KUzbnZ1 g==; X-CSE-ConnectionGUID: wQQx9fCJQuOjIKyWO8lLWg== X-CSE-MsgGUID: u8AO9FrxSwu0gfX69Lyb5w== X-IronPort-AV: E=Sophos;i="6.08,261,1712613600"; d="scan'208";a="37551712" Received: from vmailcow01.tq-net.de ([10.150.86.48]) by mx1.tq-group.com with ESMTP; 24 Jun 2024 14:03:54 +0200 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 8BF321613E2; Mon, 24 Jun 2024 14:03:48 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ew.tq-group.com; s=dkim; t=1719230630; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=L9SqzLwnyFw9O0cjx7JztMLALTgKK8TJgRcvzOsBlc4=; b=mdeBpSI1im/et4LdsYakQtiNV5Hmhe7AIWj3a8UOVyfwzq/CSYIVrShsm0THfmCaiLLMpg bxg3emTDk1j0NzhXYbf8TbJebJwWgHbDvxsjVsbCLGXrtuuXDnrkB4PxTEEAc+HuIIAoPk jITczRzAcaP50gID6yObJOi5dvEjm4LfvoBJ8yQhmvlpab7VZx8Z0FWKyCAJd5U6BYFJ3w 5SYA9P1ENOx/mpjY/I4R5Ror3okGbW/PgWv5uPs6iXaiPL9iNK9OGfUZdCbVVTlCVBSQiv S7UbNtFLCPSV24V1DKkASssGaMvNE++FcuUFk9Y0i95S8th+Xu0ieHjg7OcgCw== From: Alexander Stein To: Dmitry Baryshkov Cc: Marek Vasut , Stefan Agner , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , dri-devel@lists.freedesktop.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] drm/lcdif: switch to DRM_BRIDGE_ATTACH_NO_CONNECTOR Date: Mon, 24 Jun 2024 14:03:52 +0200 Message-ID: <1984704.yKVeVyVuyW@steina-w> Organization: TQ-Systems GmbH In-Reply-To: References: <20240624-mxc-lcdif-bridge-attach-v1-1-37e8c5d5d934@linaro.org> <859620673.0ifERbkFSE@steina-w> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240624_050357_650208_55E589F6 X-CRM114-Status: GOOD ( 27.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Dmitry, Am Montag, 24. Juni 2024, 13:49:03 CEST schrieb Dmitry Baryshkov: > On Mon, 24 Jun 2024 at 14:32, Alexander Stein > wrote: > > > > Hi, > > > > Am Montag, 24. Juni 2024, 12:31:46 CEST schrieb Dmitry Baryshkov: > > > Existing in-kernel device trees use LCDIF with the dsim + adv7533, ds= im > > > + tc358762 or with ldb + panel_bridge. All these combinations support > > > using DRM_BRIDGE_ATTACH_NO_CONNECTOR for bridge attachment. > > > > > > Change lcdif driver to use this flag when attaching the bridge and > > > create drm_bridge_connector afterwards. > > > > > > Signed-off-by: Dmitry Baryshkov > > > --- > > > Note: compile-tested only. > > > > I gave it a try, but it doesn't work. Despite DSI output it also breaks > > HDMI output, where I at least some error messages: > > [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c0= 0000/hdmi@32fd8000 to encoder None-37: -22 > > [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@32c0= 0000/display-bridge@32fc4000 to encoder None-37: -22 > > imx-lcdif 32fc6000.display-controller: error -EINVAL: Failed to attach = bridge for endpoint0 > > imx-lcdif 32fc6000.display-controller: error -EINVAL: Cannot connect br= idge > > imx-lcdif 32fc6000.display-controller: probe with driver imx-lcdif fail= ed with error -22 >=20 > Could you please try it with the following change: >=20 > diff --git a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c > b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c > index 13bc570c5473..c87d3e55c00d 100644 > --- a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c > +++ b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c > @@ -94,6 +94,7 @@ static int imx8mp_dw_hdmi_probe(struct platform_device = *pdev) > plat_data->phy_name =3D "SAMSUNG HDMI TX PHY"; > plat_data->priv_data =3D hdmi; > plat_data->phy_force_vendor =3D true; > + plat_data->output_port =3D 1; >=20 > hdmi->dw_hdmi =3D dw_hdmi_probe(pdev, plat_data); > if (IS_ERR(hdmi->dw_hdmi)) Okay, this does fix the HDMI probe errors. Nevertheless I get the errors: [ 13.429313] [drm] Initialized imx-lcdif 1.0.0 for 32e80000.display-contr= oller on minor 1 [ 13.439116] imx-lcdif 32e80000.display-controller: [drm] Cannot find any= crtc or sizes [ 13.448168] imx-lcdif 32e80000.display-controller: [drm] Cannot find any= crtc or sizes [ 15.519737] [drm] Initialized imx-lcdif 1.0.0 for 32fc6000.display-contr= oller on minor 2 [ 15.675672] imx-lcdif 32fc6000.display-controller: [drm] Cannot find any= crtc or sizes just from the lcdif patch for both HDMI and DP. Best regards, Alexander >=20 > > > > Best regards, > > Alexander > > > > > --- > > > drivers/gpu/drm/mxsfb/lcdif_drv.c | 14 +++++++++++++- > > > 1 file changed, 13 insertions(+), 1 deletion(-) > > > > > > diff --git a/drivers/gpu/drm/mxsfb/lcdif_drv.c b/drivers/gpu/drm/mxsf= b/lcdif_drv.c > > > index 0f895b8a99d6..1d5508449995 100644 > > > --- a/drivers/gpu/drm/mxsfb/lcdif_drv.c > > > +++ b/drivers/gpu/drm/mxsfb/lcdif_drv.c > > > @@ -16,6 +16,7 @@ > > > > > > #include > > > #include > > > +#include > > > #include > > > #include > > > #include > > > @@ -48,6 +49,7 @@ static int lcdif_attach_bridge(struct lcdif_drm_pri= vate *lcdif) > > > { > > > struct device *dev =3D lcdif->drm->dev; > > > struct device_node *ep; > > > + struct drm_connector *connector; > > > struct drm_bridge *bridge; > > > int ret; > > > > > > @@ -96,13 +98,23 @@ static int lcdif_attach_bridge(struct lcdif_drm_p= rivate *lcdif) > > > return ret; > > > } > > > > > > - ret =3D drm_bridge_attach(encoder, bridge, NULL, 0); > > > + ret =3D drm_bridge_attach(encoder, bridge, NULL, DRM_BR= IDGE_ATTACH_NO_CONNECTOR); > > > if (ret) { > > > of_node_put(ep); > > > return dev_err_probe(dev, ret, > > > "Failed to attach bridge f= or endpoint%u\n", > > > of_ep.id); > > > } > > > + > > > + connector =3D drm_bridge_connector_init(lcdif->drm, enc= oder); > > > + if (IS_ERR(connector)) { > > > + ret =3D PTR_ERR(connector); > > > + of_node_put(ep); > > > + > > > + return dev_err_probe(dev, ret, > > > + "Failed to create bridge c= onnector for endpoint%u\n", > > > + of_ep.id); > > > + } > > > } > > > > > > return 0; > > > > > > --- > > > base-commit: f76698bd9a8ca01d3581236082d786e9a6b72bb7 > > > change-id: 20240624-mxc-lcdif-bridge-attach-60368807b2f9 > > > > > > Best regards, > > > > > > > > > -- > > TQ-Systems GmbH | M=FChlstra=DFe 2, Gut Delling | 82229 Seefeld, Germany > > Amtsgericht M=FCnchen, HRB 105018 > > Gesch=E4ftsf=FChrer: Detlef Schneider, R=FCdiger Stahl, Stefan Schneider > > http://www.tq-group.com/ > > > > >=20 >=20 >=20 =2D-=20 TQ-Systems GmbH | M=FChlstra=DFe 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht M=FCnchen, HRB 105018 Gesch=E4ftsf=FChrer: Detlef Schneider, R=FCdiger Stahl, Stefan Schneider http://www.tq-group.com/