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 X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2C258C4332B for ; Mon, 15 Feb 2021 16:18:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0BE1964DEE for ; Mon, 15 Feb 2021 16:18:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232578AbhBOQSO (ORCPT ); Mon, 15 Feb 2021 11:18:14 -0500 Received: from mail.kernel.org ([198.145.29.99]:46648 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231169AbhBOPf0 (ORCPT ); Mon, 15 Feb 2021 10:35:26 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6900D64ECE; Mon, 15 Feb 2021 15:31:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1613403112; bh=K1aMfQFonvXHYyiQK0hl5trGHrfEt1bpMziYEyre7wE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=arfovcFUWr3+6NikuktjY9aV8OEPwXpYVFRw8y4ZO42+H2SYhGOD8cEHYYBHeULdS se4GG91jGNdy91X2CbbLwJwmpNYTlHv0a56U3J9Ws0f+u/mzaAoHroTJaihbfbjEgy v7W9W8VGy/YqeiYTjAJakVijDsazQMACK7YYEKcU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, George Shen , Wenjing Liu , Anson Jacob , Daniel Wheeler , Alex Deucher , Sasha Levin Subject: [PATCH 5.10 031/104] drm/amd/display: Fix DPCD translation for LTTPR AUX_RD_INTERVAL Date: Mon, 15 Feb 2021 16:26:44 +0100 Message-Id: <20210215152720.495406792@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210215152719.459796636@linuxfoundation.org> References: <20210215152719.459796636@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: George Shen [ Upstream commit 2b6b7ab4b1cabfbee1af5d818efcab5d51d62c7e ] [Why] The translation between the DPCD value and the specified AUX_RD_INTERVAL in the DP spec do not match. [How] Update values to match the spec. Signed-off-by: George Shen Reviewed-by: Wenjing Liu Acked-by: Anson Jacob Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 17e6fd8201395..32b73ea866737 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -877,13 +877,13 @@ static uint32_t translate_training_aux_read_interval(uint32_t dpcd_aux_read_inte switch (dpcd_aux_read_interval) { case 0x01: - aux_rd_interval_us = 400; + aux_rd_interval_us = 4000; break; case 0x02: - aux_rd_interval_us = 4000; + aux_rd_interval_us = 8000; break; case 0x03: - aux_rd_interval_us = 8000; + aux_rd_interval_us = 12000; break; case 0x04: aux_rd_interval_us = 16000; -- 2.27.0