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Mon, 4 Feb 2019 09:10:02 +0000 From: Pankaj Bansal To: Leo Li Subject: [PATCH v3 1/2] dt-bindings: soc: fsl: Document Qixis FPGA usage Thread-Topic: [PATCH v3 1/2] dt-bindings: soc: fsl: Document Qixis FPGA usage Thread-Index: AQHUvGlp8uj3aRTwvE2rsi77vi3Hgg== Date: Mon, 4 Feb 2019 09:10:02 +0000 Message-ID: <20190204143449.25040-2-pankaj.bansal@nxp.com> References: <20190204143449.25040-1-pankaj.bansal@nxp.com> In-Reply-To: <20190204143449.25040-1-pankaj.bansal@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: BMXPR01CA0037.INDPRD01.PROD.OUTLOOK.COM (2603:1096:b00:c::23) To VI1PR0401MB2496.eurprd04.prod.outlook.com (2603:10a6:800:56::10) authentication-results: spf=none (sender IP is ) smtp.mailfrom=pankaj.bansal@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [92.120.1.69] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; VI1PR0401MB2640; 6:PxTxXbObeFy6uLRI2/mIF2m4jP1oKzmiY2O7h25six5uNCGuI6LfZ6z6HQmko3OloMh1cn9A4+AGp1ZHuyNOEqTQ7p8ai/KGLqBsW9KE6oYTKD2Z5K5XLAf83R8+UZFkx34RnA5r3dsZVubIh3eeIwhLG7OSrcIuCEN8rc/4HZ0EnrRQxdE4se3ttydtxkfP8k+isZ1QGm9M3qDSKshTCaGH6klqizFKW6T8SzjszKp/9wQRaKBA7yv3faXWQm5lmPvJRIyOJfH0PEPkuJBDEw+zemydcWfB2a8pr850fyyQ8rdTb9tbHikelWabARky4aCgEGk68Jn/dDkhe8dTcZS0AnmSYyfV4aTlmSDIWenoXWLqDbHZbp645N/YoK6gOgz/veCoIDAS3jhzpDgCKUjLW2dpJ9roNFOrTCgPswX6xbAzTTGbGXQb2QO4r4dLXn8Y3Pu3Qnb/EKM0ZBcJiA==; 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DIR:OUT; SFP:1101; SCL:1; SRVR:VI1PR0401MB2640; H:VI1PR0401MB2496.eurprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: eFYoPeRKfZbjrm4ExEeemSB04C3bNvs0mbzif7aO7jdKIe3b/U9s+NffLNtrs0r+jFY6NS6LHQOarn6udNgPGSg0eBWVe3Bi0LmVxej+EN2sEWL5zm7IHfwXY8pMbXLZY7QkbGRNlQ/5fu8OagScb5iAukqAbuYaNc3xdfdx3nstrehfPm1dlpawNuaClMB9WDMhJ1nHxZ3OKvrfn5COD9kXOUl9WGagL5pgItLRlyKJNx2JDMYpbL2uyIV3KzyughDe3xBIlmlDUvMuxpp+IpUbfpjm493NGT+8IKkWlpxKysE28zdZmufdguAgVXhowy5f12e97Dm4Mai8cE6KulOTuvPuENBAkQ7aG6hJXKJRzCcXHksIrudAPFTvJUTquzbJDt2oTd6i3qcA21B6fwt4Kci/TFbiMwk5NfI7Vsc= Content-ID: MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9249f6c5-8052-4a4e-a064-08d68a808b8a X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Feb 2019 09:10:01.1600 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0401MB2640 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190204_011007_813708_AA31B144 X-CRM114-Status: GOOD ( 13.40 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [40.107.15.50 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Pankaj Bansal , "linuxppc-dev@lists.ozlabs.org" , "linux-arm-kernel@lists.infradead.org" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org an FPGA-based system controller, called “Qixis”, which manages several critical system features, including: • Reset sequencing • Power supply configuration • Board configuration • hardware configuration The qixis registers are accessible over one or more system-specific interfaces, typically I2C, JTAG or an embedded processor. Signed-off-by: Pankaj Bansal --- Notes: V3: - Added boardname based compatible field in bindings - Added bindings for MMIO based FPGA V2: - No change .../bindings/soc/fsl/qixis_ctrl.txt | 53 ++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/fsl/qixis_ctrl.txt b/Documentation/devicetree/bindings/soc/fsl/qixis_ctrl.txt new file mode 100644 index 000000000000..5d510df14be8 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/fsl/qixis_ctrl.txt @@ -0,0 +1,53 @@ +* QIXIS FPGA block + +an FPGA-based system controller, called “Qixis”, which +manages several critical system features, including: +• Configuration switch monitoring +• Power on/off sequencing +• Reset sequencing +• Power supply configuration +• Board configuration +• hardware configuration +• Background power data collection (DCM) +• Fault monitoring +• RCW bypass SRAM (replace flash RCW with internal RCW) (NOR only) +• Dedicated functional validation blocks (POSt/IRS, triggered event, and so on) +• I2C master for remote board control even with no DUT available + +The qixis registers are accessible over one or more system-specific interfaces, +typically I2C, JTAG or an embedded processor. + +FPGA connected to I2C: +Required properties: + + - compatible: should be a board-specific string followed by a string + indicating the type of FPGA. Example: + "fsl,-fpga", "fsl,fpga-qixis-i2c" + - reg : i2c address of the qixis device. + +Example (LX2160A-QDS): + /* The FPGA node */ + fpga@66 { + compatible = "fsl,lx2160aqds-fpga", "fsl,fpga-qixis-i2c"; + reg = <0x66>; + #address-cells = <1>; + #size-cells = <0>; + } + +* Freescale on-board FPGA + +This is the memory-mapped registers for on board FPGA. + +Required properties: +- compatible: should be a board-specific string followed by a string + indicating the type of FPGA. Example: + "fsl,-fpga", "fsl,fpga-qixis" +- reg: should contain the address and the length of the FPGA register set. + +Example (LS2080A-RDB): + + cpld@3,0 { + compatible = "fsl,ls2080ardb-fpga", "fsl,fpga-qixis"; + reg = <0x3 0 0x10000>; + }; +