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 06E19E8783A for ; Tue, 3 Feb 2026 14:13:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AB49710E694; Tue, 3 Feb 2026 14:13:36 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="SyTFD8uo"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) by gabe.freedesktop.org (Postfix) with ESMTPS id E97C410E695; Tue, 3 Feb 2026 14:13:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1770128016; x=1801664016; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=DX+X2Hozta83o8SpBXDAw0vk/IEs7eC0BumJgMeTqCM=; b=SyTFD8uodyZH1Fhb/GvZANT9QdBTaIkjXyk3Acz0Hz91DIlxwnGkqRfz JaxVLLppJI7vOdJtojfQYC97rqg9v1vfe5Zfy54F+nZu8eLCrGupCbPXi BGNPfl0kVKO5tHWd88t3h3hrtUnuc4fMRzUUry1qTSAaLqYKBfGgLM2cZ UHc8Mk+FkZu+quYeFUDOsRGK/9uAxENNIHhRLwwDEmJi0S6FN7j8iCIET w0Q2wyJUu8fN/3rgKEnFFrCnp+BsnQCDv5ALRoQjWvN7xBpAbUDkOHd6m Xb9V+Oi2wVf0koICEMtl8d69e6Vt1mUPk2eRXin+ZPyGMhTRG4Lh+MPvs A==; X-CSE-ConnectionGUID: uWCrTzTIRPWCW2K0+dYjBw== X-CSE-MsgGUID: sHFTvPLfQD+aS+jRbmZmMQ== X-IronPort-AV: E=McAfee;i="6800,10657,11690"; a="75156448" X-IronPort-AV: E=Sophos;i="6.21,270,1763452800"; d="scan'208";a="75156448" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Feb 2026 06:13:35 -0800 X-CSE-ConnectionGUID: DZsXTVTVQcGsl8wsqllHng== X-CSE-MsgGUID: oEnIYuRNQo2qtskpAZWp8w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,270,1763452800"; d="scan'208";a="208956313" Received: from srr4-3-linux-101-amanna.iind.intel.com ([10.223.74.76]) by orviesa006.jf.intel.com with ESMTP; 03 Feb 2026 06:13:33 -0800 From: Animesh Manna To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: dibin.moolakadan.subrahmanian@intel.com, jani.nikula@intel.com, Animesh Manna Subject: [PATCH v2 07/10] drm/i915/cmtg: program sync to port for cmtg Date: Tue, 3 Feb 2026 19:14:04 +0530 Message-Id: <20260203134407.2823406-8-animesh.manna@intel.com> X-Mailer: git-send-email 2.29.0 In-Reply-To: <20260203134407.2823406-1-animesh.manna@intel.com> References: <20260203134407.2823406-1-animesh.manna@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Program Cmtg Sync to Port Sync. Set before enabling the timing generator. While cmtg start running this bit will be cleared. Signed-off-by: Animesh Manna --- drivers/gpu/drm/i915/display/intel_cmtg.c | 3 +++ drivers/gpu/drm/i915/display/intel_cmtg_regs.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_cmtg.c b/drivers/gpu/drm/i915/display/intel_cmtg.c index 12a081dd7e4d..3af4aefc760e 100644 --- a/drivers/gpu/drm/i915/display/intel_cmtg.c +++ b/drivers/gpu/drm/i915/display/intel_cmtg.c @@ -258,4 +258,7 @@ void intel_cmtg_enable(const struct intel_crtc_state *crtc_state) intel_de_read(display, TRANS_SET_CONTEXT_LATENCY(display, cpu_transcoder))); intel_cpu_cmtg_transcoder_set_m_n(crtc_state); + + /* Program Cmtg Sync to Port Sync, TRANS_CMTG_CTL */ + intel_de_rmw(display, TRANS_CMTG_CTL(cpu_transcoder), CMTG_SYNC_TO_PORT, CMTG_SYNC_TO_PORT); } diff --git a/drivers/gpu/drm/i915/display/intel_cmtg_regs.h b/drivers/gpu/drm/i915/display/intel_cmtg_regs.h index b766ded8686c..0ed767a797c0 100644 --- a/drivers/gpu/drm/i915/display/intel_cmtg_regs.h +++ b/drivers/gpu/drm/i915/display/intel_cmtg_regs.h @@ -18,7 +18,9 @@ #define TRANS_CMTG_CTL_A _MMIO(0x6fa88) #define TRANS_CMTG_CTL_B _MMIO(0x6fb88) +#define TRANS_CMTG_CTL(id) _MMIO(0x6fa88 + (id) * 0x100) #define CMTG_ENABLE REG_BIT(31) +#define CMTG_SYNC_TO_PORT REG_BIT(29) #define TRANS_HTOTAL_CMTG(id) _MMIO(0x6F000 + (id) * 0x100) #define TRANS_HBLANK_CMTG(id) _MMIO(0x6F004 + (id) * 0x100) -- 2.29.0