From patchwork Tue Aug 8 15:42:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dylan Hung X-Patchwork-Id: 13346162 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E9086C001DB for ; Tue, 8 Aug 2023 15:43:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=9+pKrmQnS8iW7593TfEXJpZXBuRz4IaANW83XdTQXRI=; b=cpyt2fr62ousgg 5++wb6yNbY75UD+sMsCQ/7fDhX+lK9YVZ0JiMN4KI2Gn7LrejdBRWUsnbxg5m4MwSD5t8U/Vx9hsE LGmKRllCOMkp1w4iFpqY4ZyO8dUI9A59Uj65bdZL8og1G9nz4fpItjHGdERkafg+2ig2YDmZkbRTV JWxTeZ1j8OT5D0E422C9ScOyAo+DCFmZrsEWK1h9AmCNx19fcPsR94zzZtk1Ao0ioSMuAkJ6UqvV9 gqLEkZOPwlOTGBH+cumKN8ojU6RaT9wTVDE3E6QK3B10m4361OL9gLXRIK5/gcrmbt7Qx1YWMgg79 CUh6lNf0V3XSnP6t8odQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qTOrN-002pZr-0E; Tue, 08 Aug 2023 15:43:01 +0000 Received: from mail.aspeedtech.com ([211.20.114.72] helo=TWMBX02.aspeed.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qTOrG-002pVn-1k; Tue, 08 Aug 2023 15:42:55 +0000 Received: from TWMBX02.aspeed.com (192.168.0.24) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 8 Aug 2023 23:42:45 +0800 Received: from localhost.localdomain (192.168.10.10) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 8 Aug 2023 23:42:45 +0800 From: Dylan Hung To: , , , , , , , , , , , , CC: , Subject: [PATCH 2/3] dt-bindings: i3c: ast2600: Add resets and reset-names Date: Tue, 8 Aug 2023 23:42:40 +0800 Message-ID: <20230808154241.749641-3-dylan_hung@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230808154241.749641-1-dylan_hung@aspeedtech.com> References: <20230808154241.749641-1-dylan_hung@aspeedtech.com> MIME-Version: 1.0 Received-SPF: Fail (TWMBX02.aspeed.com: domain of dylan_hung@aspeedtech.com does not designate 192.168.10.10 as permitted sender) receiver=TWMBX02.aspeed.com; client-ip=192.168.10.10; helo=localhost.localdomain; X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230808_084254_575479_B477A1D8 X-CRM114-Status: UNSURE ( 9.00 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add two reset lines to the AST2600 I3C controller: - core_rst: the reset line of the controller itself - global_rst: the reset line of the I3C global register block. Since all six I3C controllers in AST2600 share this global register block, the driver needs to handle this carefully. Generally, this reset line should only need to be de-asserted. Signed-off-by: Dylan Hung --- .../devicetree/bindings/i3c/aspeed,ast2600-i3c.yaml | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/i3c/aspeed,ast2600-i3c.yaml b/Documentation/devicetree/bindings/i3c/aspeed,ast2600-i3c.yaml index fcc3dbff9c9a..3166d6f3a39c 100644 --- a/Documentation/devicetree/bindings/i3c/aspeed,ast2600-i3c.yaml +++ b/Documentation/devicetree/bindings/i3c/aspeed,ast2600-i3c.yaml @@ -23,7 +23,12 @@ properties: maxItems: 1 resets: - maxItems: 1 + maxItems: 2 + + reset-names: + items: + - const: core_rst + - const: global_rst interrupts: maxItems: 1 @@ -48,6 +53,8 @@ required: - compatible - reg - clocks + - resets + - reset-names - interrupts - aspeed,global-regs @@ -63,7 +70,8 @@ examples: #address-cells = <3>; #size-cells = <0>; clocks = <&syscon 0>; - resets = <&syscon 0>; + resets = <&syscon 40>, <&syscon 39>; + reset-names = "core_rst", "global_rst"; aspeed,global-regs = <&i3c_global 0>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_i3c1_default>;