From patchwork Thu Jun 13 08:25:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hui Wang X-Patchwork-Id: 804102 Received: from smtp-relay-canonical-1.canonical.com (smtp-relay-canonical-1.canonical.com [185.125.188.121]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 63CDC13D605; Thu, 13 Jun 2024 08:25:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.125.188.121 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718267161; cv=none; b=U5raO7Ljr67UlHV7Zq11wc+l+2KA6SlROsf1BAslBuUvVsgZ1kGY8NuwK/oonvVYMbiOnJ/TkAq+9Q5pbXVO0tjfKyTbg8hNEO8xJ9ul2nuLO3q90AUneZzZKbDk2crlMnydSF52TQPVAyFRw6i536M9H//BvQyKWkty9S1WL2Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718267161; c=relaxed/simple; bh=EDYv1B7PGHb9bGboetU+iX/v1DXk0zLDEHhdH1Dn+lk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=M94gNel3d1RTmI5FDle1sgOmCxijXlsxRcjy4+DikUMlZ9JcF/NIt/Ol77jiUSADK1yBOPgvZ60RKjUr4dzv70lrqkdNqpWHmuDnsRQeYwDv9b9bONhq5sjY5pYNT7ZyCBCrHXtrf4F6Sp12Qlx6bvZKkR0Qqsh62f6pd4W0qlA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=canonical.com; spf=pass smtp.mailfrom=canonical.com; dkim=pass (2048-bit key) header.d=canonical.com header.i=@canonical.com header.b=bLVKXO8n; arc=none smtp.client-ip=185.125.188.121 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=canonical.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=canonical.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=canonical.com header.i=@canonical.com header.b="bLVKXO8n" Received: from hwang4-ThinkPad-T14s-Gen-2a.conference (unknown [123.112.65.116]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-1.canonical.com (Postfix) with ESMTPSA id 0CB6C3F1DD; Thu, 13 Jun 2024 08:25:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1718267156; bh=yjnaeeD9WWuqmqNzoLXUqkLImKXM+ZgDbAX6D3QNxpk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=bLVKXO8nC5IqV35WWZV5Fwq/00m1d8poNSQxrdVdpk/5Hp2YTgb6RHywRoCPdcM5V V2Xt2zUbfGcYmnbsZIk2Pgq9GkVunzU9eJBMrFphO9jKYn4ijAXECL/e2drCLua8bg VMcFYkSCXmVHe7hRuh+fJRcL7JhWUZ4s3cZmhyCfQT6P9F6+nzVMJCHG5xdUkgrWjv w10BNeWR9iZ90bYci6L8TfBE17+Q9yOZEde/je3qrFsRagumNcjdGWDHNnFOlv3cMq qSbrwVh6rMZOq3cZOJ4AWCK3PfLHMY9SeZuI6pt6w1OwmSOaXjI4g3E/BmdCNKaSC7 KGpc7b7UFvm1A== From: Hui Wang To: linux-serial@vger.kernel.org, devicetree@vger.kernel.org, gregkh@linuxfoundation.org Cc: jirislaby@kernel.org, hvilleneuve@dimonoff.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andy@kernel.org, lech.perczak@camlingroup.com, Maarten.Brock@sttls.nl, hui.wang@canonical.com Subject: [PATCH v4 1/2] dt-bindings: serial: sc16is7xx: add reset-gpios Date: Thu, 13 Jun 2024 16:25:27 +0800 Message-Id: <20240613082528.22591-1-hui.wang@canonical.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In some designs, the chip reset pin is connected to a GPIO, and this GPIO needs to be set correctly before probing the driver, so add a reset-gpios in the device tree. Signed-off-by: Hui Wang --- No change between v3 and v4. Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml index 5dec15b7e7c3..88871480018e 100644 --- a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml +++ b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml @@ -28,6 +28,9 @@ properties: clocks: maxItems: 1 + reset-gpios: + maxItems: 1 + clock-frequency: description: When there is no clock provider visible to the platform, this @@ -91,6 +94,7 @@ unevaluatedProperties: false examples: - | #include + #include i2c { #address-cells = <1>; #size-cells = <0>; @@ -120,6 +124,7 @@ examples: compatible = "nxp,sc16is752"; reg = <0x54>; clocks = <&clk20m>; + reset-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>; interrupt-parent = <&gpio3>; interrupts = <7 IRQ_TYPE_EDGE_FALLING>; nxp,modem-control-line-ports = <0 1>; /* Ports 0 and 1 as modem control lines */