Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765183AbcJaKUl (ORCPT ); Mon, 31 Oct 2016 06:20:41 -0400 Received: from mail-oi0-f66.google.com ([209.85.218.66]:33446 "EHLO mail-oi0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752151AbcJaKUi (ORCPT ); Mon, 31 Oct 2016 06:20:38 -0400 MIME-Version: 1.0 In-Reply-To: <04b8ed79-8efa-cc10-a9a3-fdee10e0723c@baylibre.com> References: <20161021084445.24989-1-narmstrong@baylibre.com> <20161030204110.otvjlanmi7dv7fox@rob-hp-laptop> <04b8ed79-8efa-cc10-a9a3-fdee10e0723c@baylibre.com> From: Joachim Eastwood Date: Mon, 31 Oct 2016 11:20:36 +0100 Message-ID: Subject: Re: [PATCH] net: stmmac: Add OXNAS Glue Driver To: Neil Armstrong Cc: Rob Herring , "peppe.cavallaro" , alexandre.torgue@st.com, netdev , linux-oxnas@lists.tuxfamily.org, "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , devicetree Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2857 Lines: 74 Hi Neil, On 31 October 2016 at 10:55, Neil Armstrong wrote: > On 10/30/2016 09:41 PM, Rob Herring wrote: >> On Fri, Oct 21, 2016 at 10:44:45AM +0200, Neil Armstrong wrote: >>> Add Synopsys Designware MAC Glue layer for the Oxford Semiconductor OX820. >>> >>> Signed-off-by: Neil Armstrong >>> --- >>> .../devicetree/bindings/net/oxnas-dwmac.txt | 44 +++++ >> >> It's preferred that bindings are a separate patch. > > OK > >> >>> drivers/net/ethernet/stmicro/stmmac/Kconfig | 11 ++ >>> drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + >>> drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c | 219 +++++++++++++++++++++ >>> 4 files changed, 275 insertions(+) >>> create mode 100644 Documentation/devicetree/bindings/net/oxnas-dwmac.txt >>> create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c >>> >>> Changes since RFC at https://patchwork.kernel.org/patch/9387257 : >>> - Drop init/exit callbacks >>> - Implement proper remove and PM callback >>> - Call init from probe >>> - Disable/Unprepare clock if stmmac probe fails >>> >>> diff --git a/Documentation/devicetree/bindings/net/oxnas-dwmac.txt b/Documentation/devicetree/bindings/net/oxnas-dwmac.txt >>> new file mode 100644 >>> index 0000000..5d2696c >>> --- /dev/null >>> +++ b/Documentation/devicetree/bindings/net/oxnas-dwmac.txt >>> @@ -0,0 +1,44 @@ >>> +* Oxford Semiconductor OXNAS DWMAC Ethernet controller >>> + >>> +The device inherits all the properties of the dwmac/stmmac devices >>> +described in the file stmmac.txt in the current directory with the >>> +following changes. >>> + >>> +Required properties on all platforms: >>> + >>> +- compatible: Depending on the platform this should be one of: >>> + - "oxsemi,ox820-dwmac" >>> + Additionally "snps,dwmac" and any applicable more >>> + detailed version number described in net/stmmac.txt >>> + should be used. >> >> You should be explicit what version applies to ox820. "snps,dwmac" >> should probably be deprecated IMO. There are so many variations of DW >> h/w. > > Well, to be honest I have absolutely no idea ! But I will try to find out... You can see in the boot log: >From lpc18xx boot: [ 3.242253] stmmac - user ID: 0x11, Synopsys ID: 0x36 [ 3.247653] Ring mode enabled [ 3.251491] DMA HW capability register supported [ 3.256336] Enhanced/Alternate descriptors [ 3.261537] Enabled extended descriptors [ 3.265968] RX Checksum Offload Engine supported (type 2) [ 3.272249] TX Checksum insertion supported [ 3.276874] Wake-Up On Lan supported [ 3.283743] Enable RX Mitigation via HW Watchdog Timer [ 3.326701] libphy: stmmac: probed Synopsys ID: 0x36 and user UD: 0x11, gives us DWMAC version 3.611 regards, Joachim Eastwood