linux-kernel - [PATCH v9 2/5] dt-bindings: scsi: ufs: add document for hisi-ufs

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Message-ID: <20180417140814.38098-3-liwei213@huawei.com>
Date:   Tue, 17 Apr 2018 22:08:11 +0800
From:   Li Wei <liwei213@...wei.com>
To:     <robh+dt@...nel.org>, <mark.rutland@....com>,
        <catalin.marinas@....com>, <will.deacon@....com>,
        <vinholikatti@...il.com>, <jejb@...ux.vnet.ibm.com>,
        <martin.petersen@...cle.com>, <khilman@...libre.com>,
        <arnd@...db.de>, <gregory.clement@...e-electrons.com>,
        <thomas.petazzoni@...e-electrons.com>,
        <yamada.masahiro@...ionext.com>, <riku.voipio@...aro.org>,
        <treding@...dia.com>, <krzk@...nel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-scsi@...r.kernel.org>
CC:     <zangleigang@...ilicon.com>, <gengjianfeng@...ilicon.com>,
        <guodong.xu@...aro.org>
Subject: [PATCH v9 2/5] dt-bindings: scsi: ufs: add document for hisi-ufs

add ufs node document for Hisilicon.

Signed-off-by: Li Wei <liwei213@...wei.com>
---
 Documentation/devicetree/bindings/ufs/ufs-hisi.txt | 29 ++++++++++++++++++++++
 .../devicetree/bindings/ufs/ufshcd-pltfrm.txt      | 10 +++++---
 2 files changed, 36 insertions(+), 3 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/ufs/ufs-hisi.txt

diff --git a/Documentation/devicetree/bindings/ufs/ufs-hisi.txt b/Documentation/devicetree/bindings/ufs/ufs-hisi.txt
new file mode 100644
index 000000000000..d49ab7d8f31d
--- /dev/null
+++ b/Documentation/devicetree/bindings/ufs/ufs-hisi.txt
@@ -0,0 +1,29 @@
+* Hisilicon Universal Flash Storage (UFS) Host Controller
+
+UFS nodes are defined to describe on-chip UFS hardware macro.
+Each UFS Host Controller should have its own node.
+
+Required properties:
+- compatible        : compatible list, contains one of the following -
+					"hisilicon,hi3660-ufs", "jedec,ufs-1.1" for hisi ufs
+					host controller present on Hi36xx chipset.
+- reg               : should contain UFS register address space & UFS SYS CTRL register address,
+- interrupt-parent  : interrupt device
+- interrupts        : interrupt number
+- resets            : reset node register, the "arst" corresponds to reset the APB/AXI bus.
+- reset-names       : describe reset node register
+
+Example:
+
+	ufs: ufs@...b0000 {
+		compatible = "hisilicon,hi3660-ufs", "jedec,ufs-1.1";
+		/* 0: HCI standard */
+		/* 1: UFS SYS CTRL */
+		reg = <0x0 0xff3b0000 0x0 0x1000>,
+			<0x0 0xff3b1000 0x0 0x1000>;
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_SPI 278 IRQ_TYPE_LEVEL_HIGH>;
+		/* offset: 0x84; bit: 7  */
+		resets = <&crg_rst 0x84 7>;
+		reset-names = "arst";
+	};
diff --git a/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt b/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
index c39dfef76a18..adcfb79f63f5 100644
--- a/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
+++ b/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
@@ -41,6 +41,8 @@ Optional properties:
 -lanes-per-direction	: number of lanes available per direction - either 1 or 2.
 			  Note that it is assume same number of lanes is used both
 			  directions at once. If not specified, default is 2 lanes per direction.
+- resets            : reset node register, the "rst" corresponds to reset the whole UFS IP.
+- reset-names       : describe reset node register
 
 Note: If above properties are not defined it can be assumed that the supply
 regulators or clocks are always on.
@@ -61,9 +63,11 @@ Example:
 		vccq-max-microamp = 200000;
 		vccq2-max-microamp = 200000;
 
-		clocks = <&core 0>, <&ref 0>, <&iface 0>;
-		clock-names = "core_clk", "ref_clk", "iface_clk";
-		freq-table-hz = <100000000 200000000>, <0 0>, <0 0>;
+		clocks = <&core 0>, <&ref 0>, <&phy 0>, <&iface 0>;
+		clock-names = "core_clk", "ref_clk", "phy_clk", "iface_clk";
+		freq-table-hz = <100000000 200000000>, <0 0>, <0 0>, <0 0>;
+		resets = <&reset 0 1>;
+		reset-names = "rst";
 		phys = <&ufsphy1>;
 		phy-names = "ufsphy";
 	};
-- 
2.15.0