From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v17 2/6] ARM: socfpga: add bindings document for fpga bridge drivers Date: Fri, 4 Mar 2016 22:34:55 -0600 Message-ID: <20160305043455.GA19011@rob-hp-laptop> References: <1456442711-29138-1-git-send-email-atull@opensource.altera.com> <1456442711-29138-3-git-send-email-atull@opensource.altera.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1456442711-29138-3-git-send-email-atull@opensource.altera.com> Sender: linux-doc-owner@vger.kernel.org To: Alan Tull Cc: pantelis.antoniou@konsulko.com, Moritz Fischer , gregkh@linuxfoundation.org, monstr@monstr.eu, michal.simek@xilinx.com, Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Jonathan Corbet , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, delicious.quinoa@gmail.com, dinguyen@opensource.altera.com, Matthew Gerlach List-Id: devicetree@vger.kernel.org On Thu, Feb 25, 2016 at 05:25:07PM -0600, Alan Tull wrote: > Add bindings documentation for Altera SOCFPGA bridges: > * fpga2sdram > * fpga2hps > * hps2fpga > * lwhps2fpga > > Signed-off-by: Alan Tull > Signed-off-by: Matthew Gerlach > Signed-off-by: Dinh Nguyen > --- > v2: separate into 2 documents for the 2 drivers > v12: bump version to line up with simple-fpga-bus version > remove Linux specific notes such as references to sysfs > move non-DT specific documentation elsewhere > remove bindings that would have been used to pass configuration > clean up formatting > v13: Remove 'label' property > Change property from init-val to bridge-enable > Fix email address > v14: Add resets > Change order of bridges to put lw bridge (controlling bridge) first > v15: No change in this patch for v15 of this patch set > v16: Added regs property, cleaned up unit addresses > v17: No change to this patch in v17 of patch set > --- > .../bindings/fpga/altera-fpga2sdram-bridge.txt | 15 +++++++ > .../bindings/fpga/altera-hps2fpga-bridge.txt | 47 ++++++++++++++++++++ > 2 files changed, 62 insertions(+) > create mode 100644 Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt > create mode 100644 Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt Just a few minor things. > diff --git a/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt b/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt > new file mode 100644 > index 0000000..4479a79 > --- /dev/null > +++ b/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt > @@ -0,0 +1,15 @@ > +Altera FPGA To SDRAM Bridge Driver > + > +Required properties: > +- compatible : Should contain "altr,socfpga-fpga2sdram-bridge" > + > +Optional properties: > +- bridge-enable : 0 if driver should disable bridge at startup > + 1 if driver should enable bridge at startup > + Default is to leave bridge in current state. > + > +Example: > + fpga2sdram_br { fpga-bridge@?? > + compatible = "altr,socfpga-fpga2sdram-bridge"; > + bridge-enable = <0>; > + }; > diff --git a/Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt b/Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt > new file mode 100644 > index 0000000..e6b7474 > --- /dev/null > +++ b/Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt > @@ -0,0 +1,47 @@ > +Altera FPGA/HPS Bridge Driver > + > +Required properties: > +- regs : base address and size for AXI bridge module > +- compatible : Should contain one of: > + "altr,socfpga-lwhps2fpga-bridge", > + "altr,socfpga-hps2fpga-bridge", or > + "altr,socfpga-fpga2hps-bridge" > +- reset-names : Should contain one of: > + "lwhps2fpga", > + "hps2fpga", or > + "fpga2hps" Names should be the input signal names. Do you need names with only one? > +- resets : Phandle and reset specifier for the reset listed in > + reset-names > +- clocks : Clocks used by this module. > + > +Optional properties: > +- bridge-enable : 0 if driver should disable bridge at startup. > + 1 if driver should enable bridge at startup. > + Default is to leave bridge in its current state. > + > +Example: > + hps_fpgabridge0: fpgabridge@ff400000 { No underscores. fpga-bridge@... > + compatible = "altr,socfpga-lwhps2fpga-bridge"; > + reg = <0xff400000 0x100000>; > + resets = <&rst LWHPS2FPGA_RESET>; > + reset-names = "lwhps2fpga"; > + clocks = <&l4_main_clk>; > + bridge-enable = <0>; > + }; > + > + hps_fpgabridge1: fpgabridge@ff500000 { > + compatible = "altr,socfpga-hps2fpga-bridge"; > + reg = <0xff500000 0x10000>; > + resets = <&rst HPS2FPGA_RESET>; > + reset-names = "hps2fpga"; > + clocks = <&l4_main_clk>; > + bridge-enable = <1>; > + }; > + > + hps_fpgabridge2: fpgabridge@ff600000 { > + compatible = "altr,socfpga-fpga2hps-bridge"; > + reg = <0xff600000 0x100000>; > + resets = <&rst FPGA2HPS_RESET>; > + reset-names = "fpga2hps"; > + clocks = <&l4_main_clk>; > + }; > -- > 1.7.9.5 >