From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752488AbeCWM1q (ORCPT ); Fri, 23 Mar 2018 08:27:46 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:40744 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752139AbeCWM1Q (ORCPT ); Fri, 23 Mar 2018 08:27:16 -0400 X-Google-Smtp-Source: AG47ELsb1NIbhfw4E1IQ4zlPlSMOXIkkUL/LCVsKEckqlBF8RMVm6Dod+tOPKlcrI+s79EPBntkCag== From: Paolo Pisati To: Alan Tull , Moritz Fischer , Rob Herring , Mark Rutland Cc: linux-fpga@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] dt: bindings: fpga: add lattice machxo2 slave spi binding description Date: Fri, 23 Mar 2018 13:27:11 +0100 Message-Id: <1521808032-29645-2-git-send-email-p.pisati@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1521808032-29645-1-git-send-email-p.pisati@gmail.com> References: <1521808032-29645-1-git-send-email-p.pisati@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add dt binding documentation details for Lattice MachXO2 FPGA configuration over Slave SPI interface. Signed-off-by: Paolo Pisati Acked-by: Rob Herring Acked-by: Moritz Fischer Acked-by: Alan Tull --- .../bindings/fpga/lattice-machxo2-spi.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt diff --git a/Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt b/Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt new file mode 100644 index 0000000..a8c362e --- /dev/null +++ b/Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt @@ -0,0 +1,29 @@ +Lattice MachXO2 Slave SPI FPGA Manager + +Lattice MachXO2 FPGAs support a method of loading the bitstream over +a 'slave SPI' interface. + +See 'MachXO2ProgrammingandConfigurationUsageGuide.pdf' on www.latticesemi.com + +Required properties: +- compatible: should contain "lattice,machxo2-slave-spi" +- reg: spi chip select of the FPGA + +Example for full FPGA configuration: + + fpga-region0 { + compatible = "fpga-region"; + fpga-mgr = <&fpga_mgr_spi>; + #address-cells = <0x1>; + #size-cells = <0x1>; + }; + + spi1: spi@2000 { + ... + + fpga_mgr_spi: fpga-mgr@0 { + compatible = "lattice,machxo2-slave-spi"; + spi-max-frequency = <8000000>; + reg = <0>; + }; + }; -- 2.7.4