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Fri, 21 Sep 2018 06:42:44 -0700 Received: from [127.0.0.1] (helo=localhost) by xsj-pvapsmtp01 with smtp (Exim 4.63) (envelope-from ) id 1g3Lhf-0008DO-5K; Fri, 21 Sep 2018 06:42:39 -0700 Received: from xsj-pvapsmtp01 (smtp2.xilinx.com [149.199.38.66]) by xsj-smtp-dlp1.xlnx.xilinx.com (8.13.8/8.13.1) with ESMTP id w8LDgUMF015643; Fri, 21 Sep 2018 06:42:31 -0700 Received: from [172.23.37.118] (helo=xhdnavam40.xilinx.com) by xsj-pvapsmtp01 with esmtp (Exim 4.63) (envelope-from ) id 1g3LhW-0008AC-D6; Fri, 21 Sep 2018 06:42:30 -0700 From: Nava kishore Manne To: , , , , , , , , , , Subject: [RFC PATCH v3 2/3] dt-bindings: fpga: Add bindings for ZynqMP nvmem driver Date: Sat, 22 Sep 2018 19:11:48 +0530 Message-ID: <20180922134149.5693-3-nava.manne@xilinx.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180922134149.5693-1-nava.manne@xilinx.com> References: <20180922134149.5693-1-nava.manne@xilinx.com> X-RCIS-Action: ALLOW X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.83; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Add documentation to describe Xilinx ZynqMP nvmem driver bindings. Signed-off-by: Nava kishore Manne --- Changes for v3: -None. Changes for v2: -Moved nvmem_firmware node as a child to firwmare node. .../firmware/xilinx/xlnx,zynqmp-firmware.txt | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt index 1b431d9bbe44..4b95fcc4dcb3 100644 --- a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt +++ b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt @@ -17,6 +17,19 @@ Required properties: - "smc" : SMC #0, following the SMCCC - "hvc" : HVC #0, following the SMCCC +-------------------------------------------------------------------------- += Zynq UltraScale+ MPSoC nvmem firmware driver binding = +-------------------------------------------------------------------------- +The nvmem_firmware node provides access to the hardware related data +like soc revision, IDCODE... etc, By using the firmware interface. + +Required properties: +- compatible: should be "xlnx,zynqmp-nvmem-fw" + += Data cells = +Are child nodes of silicon id, bindings of which as described in +bindings/nvmem/nvmem.txt + ------- Example ------- @@ -25,5 +38,27 @@ firmware { zynqmp_firmware: zynqmp-firmware { compatible = "xlnx,zynqmp-firmware"; method = "smc"; + nvmem_firmware { + compatible = "xlnx,zynqmp-nvmem-fw"; + #address-cells = <1>; + #size-cells = <1>; + + /* Data cells */ + soc_revision: soc_revision { + reg = <0x0 0x4>; + }; + }; }; }; + += Data consumers = +Are device nodes which consume nvmem data cells. + +For example: + + pcap { + ... + nvmem-cells = <&soc_revision>; + nvmem-cell-names = "soc_revision"; + }; +