From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZqrwAJESaGbH2ySpPZ2zZW6G2l1m8LzYCy4TBY52sPexbUBe7VfhRsYBqkmJ4UFoqJsly0D ARC-Seal: i=1; a=rsa-sha256; t=1524837989; cv=none; d=google.com; s=arc-20160816; b=PonRhFWGedyAmEKUlC2cv15gfgedv5Bc7lDSWzjOPBOOcL7gm3c7drESCu0xLQD6NQ /B6oV610PTL/5TK98s8bLu9AuRZruweNvp2diEuTnEkSAABkol+b8AJ173u+vvEsT8X6 wYWTmdF+6SeSNAO0riVO2yQs3d0GD8FA69UpA21be1b5L6K1ltHDCU+yzzwnug6Im5fe VSXN/EVFIsvm2QtxqL8f5DZwRRsofMuXiPp6JkkxuqoUu2FRTL6iVk5FAixo/JjnH2BH IEotTHukPRrnOwbRCpf7EvOQmBsvCYZFDUM168NogqWkG3R7YJtQULllQiYkrnOCZj70 d+Xg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:dmarc-filter:arc-authentication-results; bh=sgWwtVhgxX/juCjoXcUg1tFjF4CdonN4CiJNdoaDl60=; b=S/VMFz/G7S9ZfIvjbG8Jic4+2qKjf8Zoq8QaILIw70isP7JZr4vgx8c3CmPMSdLi/P XV/6b4CZEh0BHAJyVJU26H/I5BbaqR93gCXA68aRAiOOLz0wy95VlJp2StWBPdy0vjht qTa8v5UE7j4BHPCxxMd3b7xGrnNC8YzznfvalfgzOkCYOIJKuLwWLRcSXXPNPwq4oedA 3zAaf+6YgVu9GcunzdiU2H7YLn5uHikYEJLzTO3L949N47PIOFdFnAxWZvIlt2PzIC+J 4uELgjrnPtjpD0TOizJYjNlZA4cTHlMwp68svi+OCQ7PbDmjZSacJPJn4pKToMVBLkp3 3LSg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of srs0=4/0d=hq=linuxfoundation.org=gregkh@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=SRS0=4/0d=HQ=linuxfoundation.org=gregkh@kernel.org Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of srs0=4/0d=hq=linuxfoundation.org=gregkh@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=SRS0=4/0d=HQ=linuxfoundation.org=gregkh@kernel.org DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ECD3121890 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=fail smtp.mailfrom=gregkh@linuxfoundation.org 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> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180427135732.928644313@linuxfoundation.org> References: <20180427135732.928644313@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1598908520118172007?= X-GMAIL-MSGID: =?utf-8?q?1598908520118172007?= X-Mailing-List: linux-kernel@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: