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: 840710 Received: from mail-m60244.netease.com (mail-m60244.netease.com [210.79.60.244]) (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 9D0461BD014; Mon, 4 Nov 2024 11:02:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.79.60.244 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730718132; cv=none; b=pfdagVvpalo+K20VuU435zM03A6ZXLLzQ91/Hfd30MpyoH7H/Cyklra6TZ4EHGV4rufebGHhOT3R9ofGb22XOoFv98yrk4RtjCMWTmwvrPwMQznAyi+DCuM5TRmzNZ10FyOZCawkXtsUdc7clr57Zz4G2q27OeYbiWGtpEVrpxg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730718132; c=relaxed/simple; bh=AWmRrV/UZ+5iDnXL4rcR+Cq8I1OD5Oyw/4/xpteEEf8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=hXeLhBGK1GNTlH0pOZrgpaipUfXdwllSkdfrN0/kZc7i6CPesKUKd7dYC7B506r2j+HXK7DMgsG+pEWx+uKDf8wlRYdsBnyDa31zLahHWRqnw1SXuMlhs5a6z9gfuO5TahvXrU0CbJ1itGIuepFza0NmZe00GZJPvlbe0/Bw+8c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com; spf=pass smtp.mailfrom=rock-chips.com; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b=KSVxPdwF; arc=none smtp.client-ip=210.79.60.244 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rock-chips.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b="KSVxPdwF" 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; Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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>; + }; + };