From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01B34C433EF for ; Mon, 27 Sep 2021 02:31:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C558B60F4F for ; Mon, 27 Sep 2021 02:31:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232511AbhI0CdQ (ORCPT ); Sun, 26 Sep 2021 22:33:16 -0400 Received: from twspam01.aspeedtech.com ([211.20.114.71]:22285 "EHLO twspam01.aspeedtech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232506AbhI0CdO (ORCPT ); Sun, 26 Sep 2021 22:33:14 -0400 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 18R2AIvu038750; Mon, 27 Sep 2021 10:10:20 +0800 (GMT-8) (envelope-from chiawei_wang@aspeedtech.com) Received: from ChiaWeiWang-PC.aspeed.com (192.168.2.66) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 27 Sep 2021 10:30:55 +0800 From: Chia-Wei Wang To: , , , , , , , CC: Subject: [PATCH v7 3/5] dt-bindings: aspeed: Add UART routing controller Date: Mon, 27 Sep 2021 10:30:51 +0800 Message-ID: <20210927023053.6728-4-chiawei_wang@aspeedtech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210927023053.6728-1-chiawei_wang@aspeedtech.com> References: <20210927023053.6728-1-chiawei_wang@aspeedtech.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [192.168.2.66] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 18R2AIvu038750 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add dt-bindings for Aspeed UART routing controller. Signed-off-by: Oskar Senft Signed-off-by: Chia-Wei Wang Reviewed-by: Rob Herring --- .../devicetree/bindings/mfd/aspeed-lpc.yaml | 4 ++ .../bindings/soc/aspeed/uart-routing.yaml | 56 +++++++++++++++++++ 2 files changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/aspeed/uart-routing.yaml diff --git a/Documentation/devicetree/bindings/mfd/aspeed-lpc.yaml b/Documentation/devicetree/bindings/mfd/aspeed-lpc.yaml index 03d417762752..f1538038c045 100644 --- a/Documentation/devicetree/bindings/mfd/aspeed-lpc.yaml +++ b/Documentation/devicetree/bindings/mfd/aspeed-lpc.yaml @@ -142,6 +142,10 @@ patternProperties: - interrupts - snoop-ports + "^uart-routing@[0-9a-f]+$": + $ref: /schemas/soc/aspeed/uart-routing.yaml# + description: The UART routing control under LPC register space + required: - compatible - reg diff --git a/Documentation/devicetree/bindings/soc/aspeed/uart-routing.yaml b/Documentation/devicetree/bindings/soc/aspeed/uart-routing.yaml new file mode 100644 index 000000000000..6876407124dc --- /dev/null +++ b/Documentation/devicetree/bindings/soc/aspeed/uart-routing.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# # Copyright (c) 2018 Google LLC +# # Copyright (c) 2021 Aspeed Technology Inc. +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/soc/aspeed/uart-routing.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Aspeed UART Routing Controller + +maintainers: + - Oskar Senft + - Chia-Wei Wang + +description: + The Aspeed UART routing control allow to dynamically route the inputs for + the built-in UARTS and physical serial I/O ports. + + This allows, for example, to connect the output of UART to another UART. + This can be used to enable Host <-> BMC communication via UARTs, e.g. to + allow access to the Host's serial console. + + This driver is for the BMC side. The sysfs files allow the BMC userspace + which owns the system configuration policy, to configure how UARTs and + physical serial I/O ports are routed. + +properties: + compatible: + items: + - enum: + - aspeed,ast2400-uart-routing + - aspeed,ast2500-uart-routing + - aspeed,ast2600-uart-routing + reg: + maxItems: 1 + +required: + - compatible + +additionalProperties: false + +examples: + - | + lpc: lpc@1e789000 { + compatible = "aspeed,ast2600-lpc-v2", "simple-mfd", "syscon"; + reg = <0x1e789000 0x1000>; + + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x1e789000 0x1000>; + + uart_routing: uart-routing@98 { + compatible = "aspeed,ast2600-uart-routing"; + reg = <0x98 0x8>; + }; + }; -- 2.17.1