From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794591216; b=oPAvlBsgBvqkSpkTYEF4jx1BXvXR1Yz2v974zVJFNXtk/muWdGFOWGDuITF0EZUZxU9X l0gCMOShK4NmT7UlCVXELAvWDEdviH1eP8dY9W9ClNPa6/5W2DbGxAX5NP0wqlaGUuj32 SSvNfEXnfxX3jVp/KGTWFq07xzBf4xfCwTG1KCN/2wo3hCrJ6tsFQPhHb6FCRMdIC+rpm rN6L/W5aGAzIUpwl3ItRpf1ZE61NPCi3Tb2P7jWQRRnyH9NoeRwUASCcDXyyzu9SSdJwJ qzAd8+yHVIOjpFOzSzGBujTun34sy5ztUqqI90JTT2Rc0rb/fvKXOvrkTiSj5svIo8w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794591216; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=89zBy8M/ZYCrVOWBrDio0OfmxN2lktb2EPbvPoihLfw=; b=QZn8WwYyPhzuyDT1mxRQ07VBti5TkHHwBoFt7iCD8OY6H45FBBTU/0cNoSKSHbiHPsGj TaWzv/7jVGOeVvVNZVHlw+xBtM8QIUiWAbWuc3tN4OAFT5ynkgRsBSTtwrlk38q6UUyWz GwvEwSlGTXE10AzMblkp74cwDArOe5iOonfYH23EfGJV4laLXdPV6kBEHZ4nuC8Np4nsR T9lS5KLVV4oafCFmykEnzK6gTRMhhmAdBhsFdR2/zNBpnYimB+iI/NsV7+xoJW8LRrJ8H t9G2PBbLUPunBdWNN9CMHsP6yyk5ioNMUD5ct7kJ8NBT3qoT/Zx5YQkE7i8H1f1qSeg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=CXZATlht; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E12D4606C0B7; Fri, 13 Nov 2026 17:33:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=CXZATlht Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D5E91F000C4; Fri, 13 Nov 2026 17:33:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794591215; bh=89zBy8M/ZYCrVOWBrDio0OfmxN2lktb2EPbvPoihLfw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=CXZATlhtYGtRk95r+dz5puAffvrs0i/9m9R8QPWhu/bBe04uZIwy49ky4c0TjrlLZ nsSmz2X0iTrLg7FjugUWuHy1YVDkh4+a0W6X2CU2+YRMrfvRnVtzs0M8UVu6gF+SCq ADlttlfAMaEitGKe02Z1oueI/7/RyVjmCN1LcrJY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kylie C , Alex Hung , Alex Deucher , Sasha Levin Subject: [PATCH 6.12 349/670] drm/amd/display: Dont select zero V_TOTAL_MIN/MAX on seamless boot Date: Fri, 13 Nov 2026 10:48:33 -0500 Message-ID: <20261113153823.658839075@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261113153811.177190860@linuxfoundation.org> References: <20261113153811.177190860@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kylie C [ Upstream commit d13f36e4e055cce03761de590bc8dc6346b1d5c8 ] Initialize V_TOTAL_MIN/MAX to V_TOTAL before enabling the selectors if they are still 0, as optc1_program_timing() does without seamless boot. Tested on Renoir (DCN 2.1) eDP with amdgpu.seamless=1. This removes the flash between the bios logo & plymouth on my laptop. Signed-off-by: Kylie C Reviewed-by: Alex Hung Signed-off-by: Alex Deucher (cherry picked from commit 1ad7473e82b9242c4ee7eea82ab16d3f82f01651) Cc: stable@vger.kernel.org Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c b/drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c index b4694985a40a4..d70b14f54519a 100644 --- a/drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c +++ b/drivers/gpu/drm/amd/display/dc/optc/dcn20/dcn20_optc.c @@ -452,6 +452,13 @@ void optc2_lock_doublebuffer_disable(struct timing_generator *optc) void optc2_setup_manual_trigger(struct timing_generator *optc) { struct optc *optc1 = DCN10TG_FROM_TG(optc); + uint32_t v_total, v_total_max; + + REG_GET(OTG_V_TOTAL_MAX, OTG_V_TOTAL_MAX, &v_total_max); + if (!v_total_max) { + REG_GET(OTG_V_TOTAL, OTG_V_TOTAL, &v_total); + optc->funcs->set_vtotal_min_max(optc, v_total, v_total); + } /* Set the min/max selectors unconditionally so that * DMCUB fw may change OTG timings when necessary -- 2.53.0