From patchwork Mon Jun 3 12:37:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hui Wang X-Patchwork-Id: 801361 Received: from smtp-relay-canonical-0.canonical.com (smtp-relay-canonical-0.canonical.com [185.125.188.120]) (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 2D21A12C522; Mon, 3 Jun 2024 12:37:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.125.188.120 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717418267; cv=none; b=cjiAdDYrWgH+hHU6QP5H5LkADqIC1jTkJZFOVFCMNLwfc359uWZMvf7ed6IzuDZrEPSN1abEZuuTf2ezsnwLEHTVc8ZV7qjLP3tFh6OODczlKQiT/BwLwy530piwTOhJoe6oMVM16B9gNlfyjr//8tTRMlA942YZy+7RVliB+wY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717418267; c=relaxed/simple; bh=iNqoXL3l6pGrCO8tF1wXllFct7L4FEYTzyPho9173rY=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=LeKzglNU3DWop6g+oHdf5gFWZ9dQT5Or0JkgiaGfA9V3J9WRXcJkA/5Kjtp4IpOT1Dkje4C7x6Fa9pURmL9eelU1lWAjoHrcLm5eBDaWHWQlq0iFCcZOQ+JIY/g8gBxRxXMh0Nl6eTgEvAjMRxSkzjOYuxUcwRkWm5exZnLJlo4= 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=gJIX7C0w; arc=none smtp.client-ip=185.125.188.120 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="gJIX7C0w" 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-0.canonical.com (Postfix) with ESMTPSA id ECF243F5DC; Mon, 3 Jun 2024 12:37:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1717418256; bh=F5M+W+x3E5jyNkr7sCMlyiuydTbGqQoGu0AaMJzisok=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=gJIX7C0wCbNvEPyuplbpqn1Rx1l36yx+fxa6xV9X1OwyynZFvjLallTKBnek4sykJ wmeRWToP5fYinagzivKKlxh1ibDDD5aVNG2wHTVqFxEEUOBJx1ZOnHcAbP3ut0Quwd R0Oaggnjovy2k+JEEJj0qzjWI9iogJkHEllmZRtlhaR7DeELD3sk2W4f7/SJsZ0luy SkXwWzo5xsNpIncHY4TEHqoSc3kmi0iERvCWZN8AHKtj/p3utdBhVVn7aLeq0GKW4c ihnZ/Ldt1q0KOVDa3HOXpaelM0Y7NEg5pUeYkZiVY/YMeaoiesJ/w91pA0enGqutTu RIE0ELS9FvE1g== From: Hui Wang To: linux-serial@vger.kernel.org, devicetree@vger.kernel.org, gregkh@linuxfoundation.org Cc: jirislaby@kernel.org, hvilleneuve@dimonoff.com, hui.wang@canonical.com Subject: [PATCH 1/2] dt-bindings: serial: sc16is7xx: add reset-gpios Date: Mon, 3 Jun 2024 20:37:09 +0800 Message-Id: <20240603123710.649549-1-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, this gpio needs to be set correctly before probing the driver, so adding a reset-gpios in the device tree. Signed-off-by: Hui Wang --- Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.yaml index 5dec15b7e7c3..62aff6e034cb 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 @@ -120,6 +123,7 @@ 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 */