From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3A4E0611A for ; Mon, 28 Aug 2023 10:40:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B171AC433C7; Mon, 28 Aug 2023 10:40:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1693219221; bh=VLC6lG1Cu4egGOG27iKqEbgISXxsVILGFNWE8VuyDRo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=x5zBBDhTGpw3pNon+ekqF4qLL6dG+wuLE43b3XCuM9SmH/tc+SlBl/V0Dcd1IbFox ISbmimqM0NN2LC3Fh2695VBnZGx9bQfj/S5OX783CO25VoA3e4FsKcNlv18e1T3Ubt NJ6x8LB/UEuYg3/wpsANx+0TnYjpD2qi3usFKkkQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jun Lei , Pavle Kotarac , Josip Pavic , Alex Deucher , Sasha Levin Subject: [PATCH 5.4 116/158] drm/amd/display: do not wait for mpc idle if tg is disabled Date: Mon, 28 Aug 2023 12:13:33 +0200 Message-ID: <20230828101201.234646694@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230828101157.322319621@linuxfoundation.org> References: <20230828101157.322319621@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Josip Pavic [ Upstream commit 2513ed4f937999c0446fd824f7564f76b697d722 ] [Why] When booting, the driver waits for the MPC idle bit to be set as part of pipe initialization. However, on some systems this occurs before OTG is enabled, and since the MPC idle bit won't be set until the vupdate signal occurs (which requires OTG to be enabled), this never happens and the wait times out. This can add hundreds of milliseconds to the boot time. [How] Do not wait for mpc idle if tg is disabled Reviewed-by: Jun Lei Acked-by: Pavle Kotarac Signed-off-by: Josip Pavic Signed-off-by: Alex Deucher Stable-dep-of: 5a25cefc0920 ("drm/amd/display: check TG is non-null before checking if enabled") Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index fa3acf60e7bd2..16b87af6f6628 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -2902,7 +2902,8 @@ static void dcn10_wait_for_mpcc_disconnect( if (pipe_ctx->stream_res.opp->mpcc_disconnect_pending[mpcc_inst]) { struct hubp *hubp = get_hubp_by_inst(res_pool, mpcc_inst); - res_pool->mpc->funcs->wait_for_idle(res_pool->mpc, mpcc_inst); + if (pipe_ctx->stream_res.tg->funcs->is_tg_enabled(pipe_ctx->stream_res.tg)) + res_pool->mpc->funcs->wait_for_idle(res_pool->mpc, mpcc_inst); pipe_ctx->stream_res.opp->mpcc_disconnect_pending[mpcc_inst] = false; hubp->funcs->set_blank(hubp, true); } -- 2.40.1