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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 C7B4EF483D7 for ; Mon, 23 Mar 2026 17:46:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 22F4410E179; Mon, 23 Mar 2026 17:46:30 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=collabora.com header.i=@collabora.com header.b="Y+hN7D4S"; dkim-atps=neutral Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) by gabe.freedesktop.org (Postfix) with ESMTPS id DA42D10E179 for ; Mon, 23 Mar 2026 17:46:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1774287987; bh=szl+N6RGsBFQSv8d9e4tceOIS7qhsrS2cLiAaJycBlw=; h=From:Subject:Date:To:Cc:From; b=Y+hN7D4S7W0S9UmHXIv0FZNO1nnLZLeDTZRN8/IBRDeWpuQYSOrSYSYYj6uDEUMeG 7Czb68DbwHvsS7nVryMeYrG5JK8OaF47otqpmNQdPqHjs5EeFNUCmcJ06SPo1H0fB2 pKzcaVULwL/JJuxSKEj3buhiVNX02IkGK+0GPEpFLXjLVTVnxnF5aeTqO7Z2f3Ua4f rFyyDJUcKQ54XJKPwg9oD8MNPUMaFxrns5PM8lIqPh0PzTMZixCCKy5CVeBuM9G+Is 8mQBiBMH1TgkxWXho16NaKDrq7xZhYDHmbonDkJUvd6iqeAk70qy/vGc1t3KYkvZM7 tO0gKRytetVcg== Received: from localhost (unknown [86.123.23.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by bali.collaboradmins.com (Postfix) with ESMTPSA id 7A82317E3F13; Mon, 23 Mar 2026 18:46:27 +0100 (CET) From: Cristian Ciocaltea Subject: [PATCH RESEND v4 0/4] Add HDMI 2.0 support to DW HDMI QP TX Date: Mon, 23 Mar 2026 19:45:26 +0200 Message-Id: <20260323-dw-hdmi-qp-scramb-v4-0-1d99df84883e@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan Cc: kernel@collabora.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, Diederik de Haas , Maud Spierings X-Mailer: b4 0.14.3 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This patch series provides the missing support for high TMDS clock ratio and scrambling to DW HDMI QP TX library, required for handling HDMI 2.0 display modes on RK3576 & RK3588 SoCs. In order to allow addressing the SCDC status lost on sink disconnects, it adds an atomic variant of the drm_bridge_funcs.detect() callback and a new drm_bridge_detect_ctx() helper, which is further used in drm_bridge_connector to switch to using the ->detect_ctx() hook. Furthermore, it optimizes HPD event handling in dw_hdmi_qp Rockchip platform driver to run the detect cycle on the affected connector only. Signed-off-by: Cristian Ciocaltea --- Changes in v4: - Fixed conflicts while rebasing onto latest drm-misc-next - Link to v3: https://lore.kernel.org/r/20260119-dw-hdmi-qp-scramb-v3-0-bd8611730fc1@collabora.com Changes in v3: - Used drm_bridge_helper_reset_crtc() helper to reset the display pipeline and got rid of some boilerplate code (Maxime) - Rebased onto latest drm-misc-next - Link to v2: https://lore.kernel.org/r/20260113-dw-hdmi-qp-scramb-v2-0-ae7b2c58d24d@collabora.com Changes in v2: - Collected Tested-by tags from Diederik and Maud - Rebased onto latest drm-misc-next - Ensured the recently introduced 'no-hpd' support for dealing with unconnected/repurposed/broken HPD pin is limited to HDMI 1.4 rates - Link to v1: https://lore.kernel.org/r/20251203-dw-hdmi-qp-scramb-v1-0-836fe7401a69@collabora.com --- Cristian Ciocaltea (4): drm/bridge: Add ->detect_ctx hook and drm_bridge_detect_ctx() drm/bridge-connector: Switch to using ->detect_ctx hook drm/bridge: dw-hdmi-qp: Add high TMDS clock ratio and scrambling support drm/rockchip: dw_hdmi_qp: Do not send HPD events for all connectors drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 167 ++++++++++++++++++++++--- drivers/gpu/drm/display/drm_bridge_connector.c | 73 +++++------ drivers/gpu/drm/drm_bridge.c | 58 +++++++++ drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c | 44 +++---- include/drm/drm_bridge.h | 30 +++++ 5 files changed, 296 insertions(+), 76 deletions(-) --- base-commit: 0dd7a23da214279cfb77b0eb03c38614867524d7 change-id: 20251203-dw-hdmi-qp-scramb-cdbd8b57ccf9 -- Cristian Ciocaltea