From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:52514 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934132AbeD0OG3 (ORCPT ); Fri, 27 Apr 2018 10:06:29 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Archit Taneja , Neil Armstrong Subject: [PATCH 4.14 02/80] drm: bridge: dw-hdmi: Fix overflow workaround for Amlogic Meson GX SoCs Date: Fri, 27 Apr 2018 15:57:55 +0200 Message-Id: <20180427135733.038377575@linuxfoundation.org> In-Reply-To: <20180427135732.928644313@linuxfoundation.org> References: <20180427135732.928644313@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Neil Armstrong commit 9c305eb442f3b371fc722ade827bbf673514123e upstream. The Amlogic Meson GX SoCs, embedded the v2.01a controller, has been also identified needing this workaround. This patch adds the corresponding version to enable a single iteration for this specific version. Fixes: be41fc55f1aa ("drm: bridge: dw-hdmi: Handle overflow workaround based on device version") Acked-by: Archit Taneja [narmstrong: s/identifies/identified and rebased against Jernej's change] Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/1519386277-25902-1-git-send-email-narmstrong@baylibre.com [narmstrong: v4.14 to v4.16 backport] Cc: # 4.14.x Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -1634,6 +1634,8 @@ static void dw_hdmi_clear_overflow(struc * (and possibly on the platform). So far only i.MX6Q (v1.30a) and * i.MX6DL (v1.31a) have been identified as needing the workaround, with * 4 and 1 iterations respectively. + * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing + * the workaround with a single iteration. */ switch (hdmi->version) { @@ -1641,6 +1643,7 @@ static void dw_hdmi_clear_overflow(struc count = 4; break; case 0x131a: + case 0x201a: count = 1; break; default: