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[23.128.96.18]) by mx.google.com with ESMTP id r18si12824285edc.276.2021.02.08.11.23.45; Mon, 08 Feb 2021 11:24:09 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=DOE9Flir; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236211AbhBHTWs (ORCPT + 99 others); Mon, 8 Feb 2021 14:22:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:46560 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235258AbhBHSAV (ORCPT ); Mon, 8 Feb 2021 13:00:21 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id E981764EBE; Mon, 8 Feb 2021 17:58:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1612807114; bh=K1aMfQFonvXHYyiQK0hl5trGHrfEt1bpMziYEyre7wE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DOE9FlirVFO7twCvwZVDaBITca+04nhua5OZUAOqvNoGalYA4lkOulwDnsovoYzoe KW5KBECyX+W5MxbzsW+b5uCjs0gDw09R0wZxxIjlxo/HDMBVtrTim6B5sdaDJtS7AK sus6oWAwRI2zes2UkYXstLXUOia9mAem7dQ0OLvFVXaUwH/Msad5A1RR+CColCFEt9 Do4KgnaPuPxS99u7TND1KS7HAI3GHwcEc7o3DhsZ97Ba7OV0L0kbJIrAG1rQkI9xx6 CJNGJlTKcYS6Nc0DUAMX1fpswRmmTYMppUbplvgfhJlC5EkNl5BMUtX128D7Rd7764 lFDJ4Psnq1V8A== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: George Shen , Wenjing Liu , Anson Jacob , Daniel Wheeler , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.10 20/36] drm/amd/display: Fix DPCD translation for LTTPR AUX_RD_INTERVAL Date: Mon, 8 Feb 2021 12:57:50 -0500 Message-Id: <20210208175806.2091668-20-sashal@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210208175806.2091668-1-sashal@kernel.org> References: <20210208175806.2091668-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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