From patchwork Tue Aug 30 09:54:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Bornyakov X-Patchwork-Id: 12959030 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58B62C0502E for ; Tue, 30 Aug 2022 09:57:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229703AbiH3Jzh (ORCPT ); Tue, 30 Aug 2022 05:55:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229744AbiH3Jza (ORCPT ); Tue, 30 Aug 2022 05:55:30 -0400 Received: from mail.pr-group.ru (mail.pr-group.ru [178.18.215.3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 53D4419C2A; Tue, 30 Aug 2022 02:55:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=metrotek.ru; s=mail; h=from:subject:date:message-id:to:cc:mime-version:content-transfer-encoding; bh=adRRs/cSzeNyQID+6Lwy4BAkaWhLhKDY1lbpp59cqJo=; b=AvMrLMkSGgmxF7pbah+h+bqUphVLwSOAsDV3CCL1J2AH+8iCnRYfpXgfHkQLZcuHZeKr3zxywURU8 1OjuhR9Lq5u9MGqW+y9KB+XYLmCfufxXl8w/J38M6OKOSZNumKI8tllgEA93Po6vn4QJHdTG89EtMF X+YPrndgR5Ps81IKa8jwu94fciySh7cw2mlWi8TZcJo+AKIgYGMUy0n+Yh4LfZ82IrfWkSctDeGS6y PkiKnqV7hZ3+a11TyHAf4uQyJIqpNnegQCpwBJhTmCxXEQW3mXnohy7fJAQDKIx0DjucgDWrqnVM7d 91lwTRWAl20AuSrElt5bKx9o13fqpcw== X-Kerio-Anti-Spam: Build: [Engines: 2.16.4.1445, Stamp: 3], Multi: [Enabled, t: (0.000010,0.013041)], BW: [Enabled, t: (0.000014,0.000001)], RTDA: [Enabled, t: (0.086778), Hit: No, Details: v2.41.0; Id: 15.52k58s.1gbn2qbkd.ph; mclb], total: 0(700) X-Footer: bWV0cm90ZWsucnU= Received: from h-e2.ddg ([85.143.252.66]) (authenticated user i.bornyakov@metrotek.ru) by mail.pr-group.ru with ESMTPSA (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256 bits)); Tue, 30 Aug 2022 12:55:11 +0300 From: Ivan Bornyakov To: mdf@kernel.org, hao.wu@intel.com, yilun.xu@intel.com, trix@redhat.com, dg@emlix.com, j.zink@pengutronix.de, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: Ivan Bornyakov , linux-fpga@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, system@metrotek.ru Subject: [PATCH v9 0/2] Lattice sysCONFIG SPI FPGA manager Date: Tue, 30 Aug 2022 12:54:03 +0300 Message-Id: <20220830095405.31609-1-i.bornyakov@metrotek.ru> X-Mailer: git-send-email 2.37.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org Add support to the FPGA manager for programming Lattice FPGAs over slave SPI sysCONFIG interface. ECP5 and MachXO2 are supported. WARNING: I only have HW with ECP5, so can't vouch for the MachXO2. MachXO2's support is based on existing machxo2-spi.c and publicly available documentation, it's not tested on real hardware. ChangeLog: v1 -> v2: * remove "spi" from compatible string * reword description in dt-bindings doc * add reference to spi-peripheral-props.yaml in dt-binding doc * fix DTS example in dt-bindings doc: 4-spaces indentations, no undersores in node names. v2 -> v3: * fix typo "##size-cells" -> "#size-cells" in dt-bindings example v3 -> v4: * dt-bindings: reword description * dt-bindings: revert props order v4 -> v5: * dt-bindings: remove trailing dot from title * dt-bindings: reword description to avoid driver reference * dt-bindings: add "Reviewed-by: Krzysztof Kozlowski" tag v5 -> v6: * ecp5-spi: lock SPI bus for exclusive usage in ecp5_ops_write_init(), release in ecp5_ops_write_complete() or on error v6 -> v7: * ecp5-spi.c -> lattice-sysconfig-spi.c. Reworked to represent generalized sysCONFIG port with implementations for ECP5 and MachXO2 * lattice,ecp5-fpga-mgr.yaml -> lattice,sysconfig.yaml. Reworked to document both ECP5 and MachXO2 sysCONFIG. * dt-bindings: remove "Reviewed-by: Krzysztof Kozlowski" tag as doc was rewritten by a considerable amount. v7 -> v8: * dt-bindings: move "program-gpios", "init-gpios" and "done-gpios" to top-level properties and disallow them for MachXO2 variant. v8 -> v9: * dt-bindings: "program-gpios", "init-gpios" and "done-gpios" are now optional for both ECP5 and MachXO2 * lattice-sysconfig-spi.c -> sysconfig-spi.c + sysconfig.c + sysconfig.h ** reworked to be one sysCONFIG FPGA Manager rather than two distinct ECP5 and MachXO2 managers ** splitted to port type agnostic sysconfig.c and SPI-specific sysconfig-spi.c ** command transfer function moved to callback for ease of adding another port type, such as I2C Ivan Bornyakov (2): fpga: lattice-sysconfig-spi: add Lattice sysCONFIG FPGA manager dt-bindings: fpga: document Lattice sysCONFIG FPGA manager .../bindings/fpga/lattice,sysconfig.yaml | 102 +++++ drivers/fpga/Kconfig | 7 + drivers/fpga/Makefile | 3 + drivers/fpga/sysconfig-spi.c | 216 +++++++++ drivers/fpga/sysconfig.c | 433 ++++++++++++++++++ drivers/fpga/sysconfig.h | 67 +++ 6 files changed, 828 insertions(+) create mode 100644 Documentation/devicetree/bindings/fpga/lattice,sysconfig.yaml create mode 100644 drivers/fpga/sysconfig-spi.c create mode 100644 drivers/fpga/sysconfig.c create mode 100644 drivers/fpga/sysconfig.h