From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=nuvoton.com (client-ip=212.199.177.27; helo=herzl.nuvoton.co.il; envelope-from=tomer.maimon@nuvoton.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Received: from herzl.nuvoton.co.il (212.199.177.27.static.012.net.il [212.199.177.27]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43dYfR6KvHzDqVZ for ; Tue, 15 Jan 2019 00:07:25 +1100 (AEDT) Received: from taln60.nuvoton.co.il (ntil-fw [212.199.177.25]) by herzl.nuvoton.co.il (8.13.8/8.13.8) with ESMTP id x0ECbG2h018974; Mon, 14 Jan 2019 14:37:16 +0200 Received: by taln60.nuvoton.co.il (Postfix, from userid 10070) id 2327B62DA7; Mon, 14 Jan 2019 15:07:14 +0200 (IST) From: Tomer Maimon To: joel@jms.id.au Cc: openbmc@lists.ozlabs.org, Tomer Maimon Subject: [linux dev-4.19 02/15] dt-binding: mtd: add NPCM FIU controller Date: Mon, 14 Jan 2019 15:06:57 +0200 Message-Id: <20190114130710.427600-3-tmaimon77@gmail.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20190114130710.427600-1-tmaimon77@gmail.com> References: <20190114130710.427600-1-tmaimon77@gmail.com> X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jan 2019 13:07:28 -0000 X-List-Received-Date: Mon, 14 Jan 2019 13:07:28 -0000 Added device tree binding documentation for Nuvoton BMC NPCM Flash Interface Unit(FIU) SPI-NOR controller. Signed-off-by: Tomer Maimon --- Documentation/devicetree/bindings/mtd/npcm-fiu.txt | 64 ++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/npcm-fiu.txt diff --git a/Documentation/devicetree/bindings/mtd/npcm-fiu.txt b/Documentation/devicetree/bindings/mtd/npcm-fiu.txt new file mode 100644 index 000000000000..9746cb5b1ced --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/npcm-fiu.txt @@ -0,0 +1,64 @@ +* Nuvoton FLASH Interface Unit (FIU) SPI Controller + +NPCM FIU supports single, dual and quad communication interface. + +The NPCM7XX supports three FIU modules, +FIU0 and FIUx supports two chip selects, +FIU3 support four chip select. + +Required properties: + - compatible : "nuvoton,npcm750-fiu" for the NPCM7XX BMC + - #address-cells : should be 1. + - #size-cells : should be 0. + - reg : the first contains the register location and length, + the second contains the memory mapping address and length + - reg-names: Should contain the reg names "control" and "memory" + - clocks : phandle of F reference clock. + +Required properties in case the pins can be muxed: + - pinctrl-names : a pinctrl state named "default" must be defined. + - pinctrl-0 : phandle referencing pin configuration of the device. + +Optional property: + - spix-mode: enable spix-mode for an expansion bus to an ASIC or CPLD. + +The SPI device must be a child of the FIU node and must have a +compatible property as specified in bindings/mtd/jedec,spi-nor.txt + +Required property: +- reg: chip select number. + +Optional property: +- spi-rx-bus-width: see ../spi/spi-bus.txt for the description. + +Aliases: +- All the FIU controller nodes should be represented in the aliases node using + the following format 'fiu{n}' where n is a unique number for the alias. + In the NPCM7XX BMC: + fiu0 represent fiu 0 controller + fiu1 represent fiu 3 controller + fiu2 represent fiu x controller + +Example: +fiu3: fiu@c00000000 { + compatible = "nuvoton,npcm750-fiu"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0xfb000000 0x1000>, <0x80000000 0x10000000>; + reg-names = "control", "memory"; + clocks = <&clk NPCM7XX_CLK_AHB>; + pinctrl-names = "default"; + pinctrl-0 = <&spi3_pins>; + spi-nor@0 { + compatible = "jedec,spi-nor"; + spi-rx-bus-width = <2>; + #address-cells = <1>; + #size-cells = <1>; + reg = <0>; + partition@0 { + label = "flash_data"; + reg = <0x0 0x800000>; + }; + }; +}; + -- 2.14.1