From patchwork Sat Nov 5 18:59:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?J=2E_Neusch=C3=A4fer?= X-Patchwork-Id: 623175 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 4F534C43217 for ; Sat, 5 Nov 2022 18:59:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229888AbiKES7b (ORCPT ); Sat, 5 Nov 2022 14:59:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54224 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229672AbiKES7a (ORCPT ); Sat, 5 Nov 2022 14:59:30 -0400 Received: from mout.gmx.net (mout.gmx.net [212.227.17.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 00D052717; Sat, 5 Nov 2022 11:59:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=s31663417; t=1667674763; bh=0zlGVmWFUJWAxvnZusk8TMaPc0CG35sV5kM6R3yKrvQ=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=Z9sT2LWsbOVZ0gISJr2OamL1OHDHt0LHMzUhGvXkZ7CIJwhcuCk4Vqx3sNrCvOEIF BjGRMCAY8ekPr4mpqE8oAaiyvMzcjX4Mjcw4IAFOwWOQDgFsC3uNiKVZ+fSzTn2ViP jlxKdbGWYCOXh7js05ZRiCq1FxcpAX+4Vvp6HVCfSzBLezO4oja2kRfRBRF0cixx1j eFVpR9VntQoCRXdEemXJgKUUy+Y9/3SvozOQQNRqRFUuHFNCdiqRM53d1KYQXUBmpC RdJ/Yw9d9+m6Hq70OaCd8Z/ws3mvp0Pl8yeCWW604NHcQJbJ652irDKk7uvL2olSS5 xxewg8QnXXotw== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from probook ([87.78.44.193]) by mail.gmx.net (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1M3DNt-1osmUp3DC9-003cZd; Sat, 05 Nov 2022 19:59:22 +0100 From: =?utf-8?q?Jonathan_Neusch=C3=A4fer?= To: linux-spi@vger.kernel.org, openbmc@lists.ozlabs.org Cc: Lee Jones , Rob Herring , Krzysztof Kozlowski , =?utf-8?q?Jonathan?= =?utf-8?q?_Neusch=C3=A4fer?= , Mark Brown , Linus Walleij , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org Subject: [PATCH 3/8] dt-bindings: spi: Add Nuvoton WPCM450 Flash Interface Unit (FIU) Date: Sat, 5 Nov 2022 19:59:06 +0100 Message-Id: <20221105185911.1547847-4-j.neuschaefer@gmx.net> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20221105185911.1547847-1-j.neuschaefer@gmx.net> References: <20221105185911.1547847-1-j.neuschaefer@gmx.net> MIME-Version: 1.0 X-Provags-ID: V03:K1:4mhJHiA7uzMLYJ28yXXBf74eXRxCJyYO5pHRgHTydKeBdEX8Xng jKj6nr7av4t9KvdfbSaYqoC3m8aehbRPG7urF+6tCT5rfmaaWOdhonv92WnicRVsm/GbOLf 7itL2tJ/L/HFZJjH9ah3OR0WI+V4DNBD/FbE7pEwRgZ4mfbf1X88XnS6xrwVUTnrrbgqtcS Qgyh3Tesm9geoyrBpkP9Q== UI-OutboundReport: notjunk:1;M01:P0:MmDo+WVVpq4=;yqWimBjtK0/euTlSj8+VYUx4t1y AjazQdJ3cov+i4w0b9Gg+zq589JFK2Bj0jg61kS7n4VXyzrvO0Na/Q366ZYVTclXXldEtFfmm 1YBa3b14OMfyL/GDQfCTZwckWFclfhTqOLXfmjuVhM/+OJanN0JiEQITYiN7XGX1Uwdv0L637 jAN81dS6UPmo7h6uwZpxsmlpVjbJ9nOVGN1/MpAmDFCn7abEYEcWNRUzEp+bWauk2/P2qWGun WGnYAVl6wGLLjT34DfP6eNfvyFIUAZPC+4wL2VHjV8EHg6j2HIgyHIxBbrQrpTmg4jsrbKAzV oLjx8lEZ5MBRHyojqoDLF6F7iEOHG2KX75EUBYUm6PVHvvRz0P1oWhPeVaUoH8btnkPLOjEyW GHXLIhKqxaghjaFdLkIzQbBQCsA3me8wjFFB36k/YOkQBegkkYxtOGwiyX1P4VTxM25F3XeeZ HY65++p2HYQICeB1VlbLSKcDOHad+3CzkzJwuAII8s0VCUvAnD2Nxhm2qaj7V95zJ2S4ixz0E HOtQwyOJgCcEOp0IGMcqOMcOi5oODq8tVNWEtN69HQl9Us81kK7F45DKt+EGlgdJU+vf3QJ5B nuczmjLXWS8bLne8x2EJMs0ajDMokB/evw5ZiNN0kEs2af5dKokEaLP/GsVgAgHykJQlNXGh1 03mWs8vUqxGuNQBOK6vn1ubFj+pEtFz9X53Y+1Ik2HmbkJCqxug/qQZwdauzlq2nIartKE5v0 mJgg9DUODgbAdJ6jQVPk2XQ2ktpEWZ3o8yzb3PExP3JCdNyl1stsNVDDu79rUYMgGvaTzM5TA t12QYCheXgpRmi61yk6g+MovRsxKQHVrII+56O7u7WFLFvELClRmfsFiKYpXkOaGKJpaE80tq s0b1hk1ZQmGMRBoT9XV2ouCbZBjZtNu+M5VK8wExT0P9td+glPjyV+zaKWug9AL6Cgh3A7ENz +WdSZg== Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The Flash Interface Unit (FIU) is the SPI flash controller in the Nuvoton WPCM450 BMC SoC. It supports four chip selects, and direct (memory-mapped) access to 16 MiB per chip. Larger flash chips can be accessed by software-defined SPI transfers. The FIU in newer NPCM7xx SoCs is not compatible with the WPCM450 FIU. Signed-off-by: Jonathan Neuschäfer --- .../bindings/spi/nuvoton,wpcm450-fiu.yaml | 76 +++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/nuvoton,wpcm450-fiu.yaml -- 2.35.1 diff --git a/Documentation/devicetree/bindings/spi/nuvoton,wpcm450-fiu.yaml b/Documentation/devicetree/bindings/spi/nuvoton,wpcm450-fiu.yaml new file mode 100644 index 0000000000000..dc0ea2184f8d0 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/nuvoton,wpcm450-fiu.yaml @@ -0,0 +1,76 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/nuvoton,wpcm450-fiu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nuvoton WPCM450 Flash Interface Unit (FIU) + +maintainers: + - Jonathan Neuschäfer + +allOf: + - $ref: "/schemas/spi/spi-controller.yaml#" + +properties: + compatible: + const: nuvoton,wpcm450-fiu + + reg: + items: + - description: FIU registers + - description: Memory-mapped flash contents + + reg-names: + items: + - const: control + - const: memory + minItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + nuvoton,shm: + $ref: /schemas/types.yaml#/definitions/phandle + description: a phandle to the SHM block (see ../arm/nuvoton,shm.yaml) + +required: + - compatible + - reg + - clocks + +unevaluatedProperties: false + +examples: + - | + #include + spi@c8000000 { + compatible = "nuvoton,wpcm450-fiu"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0xc8000000 0x1000>, <0xc0000000 0x4000000>; + reg-names = "control", "memory"; + clocks = <&clk WPCM450_CLK_FIU>; + nuvoton,shm = <&shm>; + + flash@0 { + compatible = "jedec,spi-nor"; + }; + }; + + shm: syscon@c8001000 { + compatible = "nuvoton,wpcm450-shm", "syscon"; + reg = <0xc8001000 0x1000>; + }; + + - | + #include + spi@c8000000 { + compatible = "nuvoton,wpcm450-fiu"; + // the "memory" resource may be omitted + reg = <0xc8000000 0x1000>; + reg-names = "control"; + };