From patchwork Wed May 25 08:04:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Nautiyal, Ankit K" X-Patchwork-Id: 12860758 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 AD64CC433F5 for ; Wed, 25 May 2022 08:02:58 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1971610F1B1; Wed, 25 May 2022 08:02:58 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 27FB010F1B1 for ; Wed, 25 May 2022 08:02:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1653465777; x=1685001777; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=YACmHlTIOjBcZdCAMHOFFHLTdRj4izCLqnHyxhFTTzw=; b=VO0lkNSpySZgaKcnpyDDzEM4KuQFyZXXXnCZEeCWiNgiDDCacum6IocS zSpKNqbkhTOwoAu83l2cMWJtcrgzAyjadOElWhNiAHszEkxA9pFow8N8S 9gKEv75mV/MD1PTUtElEqH/N2R5q4BIdKHEjWtHaYhd9AIvLmThgH9e/f JXFI1BhBNTwIdyuLEHzq/YDfvUZFl/l9M2sU2omGXWv0oGlUrH99gN/+F qDpSH8dLL09exMCV3gWN4Vo1gfML2Hd/nBMRygV8vqNvhhtFgs0TbvrwE TmiAf3TkMTRnvtuhBd3t9TLwrZLjWg5C/lImsb2mObRhe4oWpz3LWKaRx Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10357"; a="273860353" X-IronPort-AV: E=Sophos;i="5.91,250,1647327600"; d="scan'208";a="273860353" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 May 2022 01:02:54 -0700 X-IronPort-AV: E=Sophos;i="5.91,250,1647327600"; d="scan'208";a="609022933" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 May 2022 01:02:52 -0700 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org Date: Wed, 25 May 2022 13:34:01 +0530 Message-Id: <20220525080401.1253511-1-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v3] drm/i915/dg2: Support 4k@30 on HDMI X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Vandita Kulkarni This patch adds a fix to support 297MHz of dot clock by calculating the pll values using synopsis algorithm. This will help to support 4k@30 mode for HDMI monitors on DG2. v2: As per the algorithm, set MPLLB VCO range control bits to 3, in register SNPS_PHY_MPLLB_DIV for 297Mhz. (Matt) v3: Fix typo. (Ankit) Signed-off-by: Vandita Kulkarni Signed-off-by: Ankit Nautiyal Reviewed-by: Matt Roper --- drivers/gpu/drm/i915/display/intel_snps_phy.c | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.c b/drivers/gpu/drm/i915/display/intel_snps_phy.c index 0dd4775e8195..cc1270978b67 100644 --- a/drivers/gpu/drm/i915/display/intel_snps_phy.c +++ b/drivers/gpu/drm/i915/display/intel_snps_phy.c @@ -517,6 +517,37 @@ static const struct intel_mpllb_state dg2_hdmi_148_5 = { REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1), }; +/* values in the below table are calculted using the algo */ +static const struct intel_mpllb_state dg2_hdmi_297 = { + .clock = 297000, + .ref_control = + REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3), + .mpllb_cp = + REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 14) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 64) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 124), + .mpllb_div = + REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, 1) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3), + .mpllb_div2 = + REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 86) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, 1), + .mpllb_fracn1 = + REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 65535), + .mpllb_fracn2 = + REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 26214) | + REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 26214), + .mpllb_sscen = + REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, 1), +}; + static const struct intel_mpllb_state dg2_hdmi_594 = { .clock = 594000, .ref_control = @@ -551,6 +582,7 @@ static const struct intel_mpllb_state * const dg2_hdmi_tables[] = { &dg2_hdmi_27_0, &dg2_hdmi_74_25, &dg2_hdmi_148_5, + &dg2_hdmi_297, &dg2_hdmi_594, NULL, };