From patchwork Tue May 21 07:19:34 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mason Yang X-Patchwork-Id: 10953047 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 53AE3933 for ; Tue, 21 May 2019 06:58:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 441DF28915 for ; Tue, 21 May 2019 06:58:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 37E122893B; Tue, 21 May 2019 06:58:47 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D6FF128915 for ; Tue, 21 May 2019 06:58:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727484AbfEUG6k (ORCPT ); Tue, 21 May 2019 02:58:40 -0400 Received: from twhmllg4.macronix.com ([122.147.135.202]:45415 "EHLO TWHMLLG4.macronix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727117AbfEUG6j (ORCPT ); Tue, 21 May 2019 02:58:39 -0400 Received: from localhost.localdomain ([172.17.195.96]) by TWHMLLG4.macronix.com with ESMTP id x4L6vvQf093632; Tue, 21 May 2019 14:57:59 +0800 (GMT-8) (envelope-from masonccyang@mxic.com.tw) From: Mason Yang To: broonie@kernel.org, marek.vasut@gmail.com, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, bbrezillon@kernel.org, linux-renesas-soc@vger.kernel.org, Geert Uytterhoeven , lee.jones@linaro.org, sergei.shtylyov@cogentembedded.com, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org Cc: juliensu@mxic.com.tw, Simon Horman , Mason Yang , miquel.raynal@bootlin.com Subject: [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings Date: Tue, 21 May 2019 15:19:34 +0800 Message-Id: <1558423174-10748-4-git-send-email-masonccyang@mxic.com.tw> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1558423174-10748-1-git-send-email-masonccyang@mxic.com.tw> References: <1558423174-10748-1-git-send-email-masonccyang@mxic.com.tw> X-MAIL: TWHMLLG4.macronix.com x4L6vvQf093632 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Document the bindings used by the Renesas R-Car Gen3 RPC-IF controller. Signed-off-by: Mason Yang --- .../devicetree/bindings/mfd/renesas-rpc-if.txt | 65 ++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt diff --git a/Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt b/Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt new file mode 100644 index 0000000..20ec85b --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt @@ -0,0 +1,65 @@ +Renesas R-Car Gen3 RPC-IF controller Device Tree Bindings +--------------------------------------------------------- + +RPC-IF supports both SPI NOR and HyperFlash (CFI-compliant flash) + +Required properties: +- compatible: should be an SoC-specific compatible value, followed by + "renesas,rcar-gen3-rpc" as a fallback. + supported SoC-specific values are: + "renesas,r8a77995-rpc" (R-Car D3) +- reg: should contain three register areas: + first for RPC-IF registers, + second for the direct mapping read mode and + third for the write buffer area. +- reg-names: should contain "regs", "dirmap" and "wbuf" +- clocks: should contain 1 entries for the module's clock +- clock-names: should contain "rpc" +- power-domains: should contain system-controller(sysc) for power-domain-cell +- resets: should contain clock pulse generator(cpg) for reset-cell, + power-domain-cell and clock-cell +- #address-cells: should be 1 +- #size-cells: should be 0 + +Example: +- SPI mode: + + rpc: spi@ee200000 { + compatible = "renesas,r8a77995-rpc", "renesas,rcar-gen3-rpc"; + reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 0x4000000>, + <0 0xee208000 0 0x100>; + reg-names = "regs", "dirmap", "wbuf"; + clocks = <&cpg CPG_MOD 917>; + clock-names = "rpc"; + power-domains = <&sysc R8A77995_PD_ALWAYS_ON>; + resets = <&cpg 917>; + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + compatible = "jedec,spi-nor"; + reg = <0>; + spi-max-frequency = <40000000>; + spi-tx-bus-width = <1>; + spi-rx-bus-width = <1>; + }; + }; + +- HF mode: + rpc: spi@ee200000 { + compatible = "renesas,r8a77995-rpc", "renesas,rcar-gen3-rpc"; + reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 0x4000000>, + <0 0xee208000 0 0x100>; + reg-names = "regs", "dirmap", "wbuf"; + clocks = <&cpg CPG_MOD 917>; + clock-names = "rpc"; + power-domains = <&sysc R8A77995_PD_ALWAYS_ON>; + resets = <&cpg 917>; + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + compatible = "cypress,hyperflash", "cfi-flash"; + reg = <0>; + }; + };