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=1794585799; b=o4Hq0fxpzzBASSg9hxi54klMbrmq7nkK2vRhOmNGXH/96/UVNjal5gCbRj+tGG8Tyfv4 uWIIyDRSSDBpL2O+wR1O9RWy6NkeBeC8vlcNwleZFrperJgwEvZ5qr25b8ZtC3dymyEUV pIIViNOGrlFBHCPJI5NrPbQXZX78AQ9hPyYF/wcVSlDUGjpF9B1oWTz5NIWEHbMSRkglY TaqwYTT8K5pm+2CXRiXBov8xN7JZpKmJV2m/UZonEfvEl3pHsxHpt6NUGVJGur6lDNL0V O3dMFy/5Pl1tMq7+JV0ej6bDu2NFk+ucS3f90HwhNFwAdcGqy7mbe8Yg1nVuf5r+gFg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794585799; 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=ViruiqdkvNiOMEyULu8HmvhZ5FH568Ni6m1vFFBc6NA=; b=tW8MYuR/k4z2pC3TGxKwc8Pyleyq9GIEVHl74noctjmy2k3UlPsI5jIcNpEU6hv7439X hn6jvLkcTU9RCSQOfD2kuk8na3YrcgHtftNYZzKZ9Ec8cuG1we+R6ZZYqc+CTyowqOiNz E0kqYE8x1XQl5zkFPNwrBly7I84TG/P1UYLBIpFE3OKyw4NOL52X99wviV340fHox53AY kdjuGvm/FJH8J4Wh8d9n90r9VyctFccb/u9oALc6dKtI9ZM9QlSa6G9CeCTqPRue3sfpG gvOuIDQhQTDsWBzNHTSwV6P8fXr4G+IYvMYwE539f1CpudmLJvZ/wGzUoL2kZQZLt9A== 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=lC8pflVv; 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 3F95E606BA99; Fri, 13 Nov 2026 16:03:19 +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=lC8pflVv Received: by smtp.kernel.org (Postfix) with ESMTPSA id DAC881F000C4; Fri, 13 Nov 2026 16:03:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794585799; bh=ViruiqdkvNiOMEyULu8HmvhZ5FH568Ni6m1vFFBc6NA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=lC8pflVv2QurKi3AabxRdDTLEYxvJAvPXMK1xUM1mMny67y/75xiZc73KxDHV2ig0 9EFByya9i7PR+M2efYE2cnwZuz1qZI4hFNmhwTlugY5zHEBpyNHRPqwM6rnW+8TYqa o2j7r3fQV6cV5wQH6PkL+begMhpmpnN0XaW+UI6c= 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 7.3 368/507] drm/amd/display: Dont select zero V_TOTAL_MIN/MAX on seamless boot Date: Fri, 13 Nov 2026 10:51:12 -0500 Message-ID: <20261113153808.534346362@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261113153753.358973689@linuxfoundation.org> References: <20261113153753.358973689@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-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 73cc8a713556b..2cdfe3d7a0ea6 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 @@ -449,6 +449,13 @@ 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