From patchwork Mon Nov 4 07:31:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 13860987 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 586BAD111B3 for ; Mon, 4 Nov 2024 07:33:03 +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:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id: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=PpwnJDHagjiI+9KC2RAJRFChuwAduR6B97es+rFNoNw=; b=Xvfvv+6j+e5Op6 jsbcDyFSz4vykbpxlzrIvZTa5VDw7/3puLM1sv1tUUnDJ1DA89UlI4+/g+DezfHGRCR8xOOBnbrLX wv+tC4AnrFh66K5CFg5VnScOC+ytG7e+QHh+B7SzLcEoZhhgid6ZYkpCqTwi1STLE4f1p5qMZ0TJK aITzCbPYCi2K0qnHP2CnUWzm4p2F+04RhNtZxF4RAGW2K6F9iidzKE3hCA0XEYdA2IlDIDWtj3OUV w8McbJ4fLpStwSTtFQZsrWmYbvyAsaPg/O4istM+SABPAl191KuiScOOIamyVtj2ng0AIzqzXOFeH ZMkINeG7ju8UOXQ4Allw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t7ra7-0000000CrCf-1emv; Mon, 04 Nov 2024 07:32:59 +0000 Received: from mail-m10141.netease.com ([154.81.10.141]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t7ra3-0000000CrBx-3w2Q for linux-rockchip@lists.infradead.org; Mon, 04 Nov 2024 07:32:57 +0000 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTP id 1b5d89cc; Mon, 4 Nov 2024 15:32:51 +0800 (GMT+08:00) From: Shawn Lin To: Rob Herring , "James E . J . Bottomley" , "Martin K . Petersen" , Krzysztof Kozlowski , Conor Dooley , Ulf Hansson , Heiko Stuebner , "Rafael J . Wysocki" Cc: Manivannan Sadhasivam , Alim Akhtar , Avri Altman , Bart Van Assche , YiFeng Zhao , Liang Chen , linux-scsi@vger.kernel.org, linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Shawn Lin Subject: [PATCH v4 2/7] dt-bindings: ufs: Document Rockchip UFS host controller Date: Mon, 4 Nov 2024 15:31:56 +0800 Message-Id: <1730705521-23081-3-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1730705521-23081-1-git-send-email-shawn.lin@rock-chips.com> References: <1730705521-23081-1-git-send-email-shawn.lin@rock-chips.com> X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZQx4eTVYfQx9KS0wdH0JISk1WFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSU9PT0 hVSktLVUpCS0tZBg++ X-HM-Tid: 0a92f6173f3409cckunm1b5d89cc X-HM-MType: 1 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6PlE6SQw6ITIvLDo#HisyDzwo LBoaCTpVSlVKTEhLTEtOTkxISE5MVTMWGhIXVQgTGgwVVRcSFTsJFBgQVhgTEgsIVRgUFkVZV1kS C1lBWU5DVUlJVUxVSkpPWVdZCAFZQUhDT0k3Bg++ DKIM-Signature: a=rsa-sha256; b=KSVxPdwFDVoqngFirPI2IBr5cWLLVww7StkydZ2wpTw83ZGY3oEa99cAmj5mSGL1XBwGH9X0ezVtGilNUQklv6RkyaY/a4sW6Tddz9wl6w0WIkD+Otjsm+MSJyXDTFXmp6n0klQcJYgMBgYrutFJDl6DvLR8GXKBYXkBNanq0mE=; s=default; c=relaxed/relaxed; d=rock-chips.com; v=1; bh=t0jfq2PeStTsZaJFc2X5b22FPiijLc9hnERUdwLupVk=; h=date:mime-version:subject:message-id:from; X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241103_233256_234369_70B579A1 X-CRM114-Status: GOOD ( 15.83 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Document Rockchip UFS host controller for RK3576 SoC. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Shawn Lin --- Changes in v4: - properly describe reset-gpios Changes in v3: - rename the file to rockchip,rk3576-ufshc.yaml - add description for reset-gpios - use rockchip,rk3576-ufshc as compatible Changes in v2: - rename the file - add reset-gpios .../bindings/ufs/rockchip,rk3576-ufshc.yaml | 105 +++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 Documentation/devicetree/bindings/ufs/rockchip,rk3576-ufshc.yaml diff --git a/Documentation/devicetree/bindings/ufs/rockchip,rk3576-ufshc.yaml b/Documentation/devicetree/bindings/ufs/rockchip,rk3576-ufshc.yaml new file mode 100644 index 0000000..bc4c3de --- /dev/null +++ b/Documentation/devicetree/bindings/ufs/rockchip,rk3576-ufshc.yaml @@ -0,0 +1,105 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/ufs/rockchip,rk3576-ufshc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip UFS Host Controller + +maintainers: + - Shawn Lin + +allOf: + - $ref: ufs-common.yaml + +properties: + compatible: + const: rockchip,rk3576-ufshc + + reg: + maxItems: 5 + + reg-names: + items: + - const: hci + - const: mphy + - const: hci_grf + - const: mphy_grf + - const: hci_apb + + clocks: + maxItems: 4 + + clock-names: + items: + - const: core + - const: pclk + - const: pclk_mphy + - const: ref_out + + power-domains: + maxItems: 1 + + resets: + maxItems: 4 + + reset-names: + items: + - const: biu + - const: sys + - const: ufs + - const: grf + + reset-gpios: + maxItems: 1 + description: | + GPIO specifiers for host to reset the whole UFS device including PHY and + memory. This gpio is active low and should choose the one whose high output + voltage is lower than 1.5V based on the UFS spec. + +required: + - compatible + - reg + - reg-names + - clocks + - clock-names + - interrupts + - power-domains + - resets + - reset-names + - reset-gpios + +unevaluatedProperties: false + +examples: + - | + #include + #include + #include + #include + #include + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + ufs: ufs@2a2d0000 { + compatible = "rockchip,rk3576-ufshc"; + reg = <0x0 0x2a2d0000 0x0 0x10000>, + <0x0 0x2b040000 0x0 0x10000>, + <0x0 0x2601f000 0x0 0x1000>, + <0x0 0x2603c000 0x0 0x1000>, + <0x0 0x2a2e0000 0x0 0x10000>; + reg-names = "hci", "mphy", "hci_grf", "mphy_grf", "hci_apb"; + clocks = <&cru ACLK_UFS_SYS>, <&cru PCLK_USB_ROOT>, <&cru PCLK_MPHY>, + <&cru CLK_REF_UFS_CLKOUT>; + clock-names = "core", "pclk", "pclk_mphy", "ref_out"; + interrupts = ; + power-domains = <&power RK3576_PD_USB>; + resets = <&cru SRST_A_UFS_BIU>, <&cru SRST_A_UFS_SYS>, <&cru SRST_A_UFS>, + <&cru SRST_P_UFS_GRF>; + reset-names = "biu", "sys", "ufs", "grf"; + reset-gpios = <&gpio4 RK_PD0 GPIO_ACTIVE_LOW>; + }; + };