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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/ufs/samsung,exynos-ufs.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Samsung SoC series UFS host controller Device Tree Bindings
maintainers:
- Alim Akhtar <alim.akhtar@samsung.com>
description: |
Each Samsung UFS host controller instance should have its own node.
This binding define Samsung specific binding other then what is used
in the common ufshcd bindings
[1] Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
properties:
compatible:
enum:
- samsung,exynos7-ufs
- samsung,exynosautov9-ufs
- samsung,exynosautov9-ufs-vh
reg:
items:
- description: HCI register
- description: vendor specific register
- description: unipro register
- description: UFS protector register
reg-names:
items:
- const: hci
- const: vs_hci
- const: unipro
- const: ufsp
clocks:
items:
- description: ufs link core clock
- description: unipro main clock
clock-names:
items:
- const: core_clk
- const: sclk_unipro_main
interrupts:
maxItems: 1
phys:
maxItems: 1
phy-names:
const: ufs-phy
samsung,sysreg:
$ref: '/schemas/types.yaml#/definitions/phandle-array'
description: Should be phandle/offset pair. The phandle to the syscon node
which indicates the FSYSx sysreg interface and the offset of
the control register for UFS io coherency setting.
dma-coherent: true
required:
- compatible
- reg
- interrupts
- phys
- phy-names
- clocks
- clock-names
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/exynos7-clk.h>
ufs: ufs@15570000 {
compatible = "samsung,exynos7-ufs";
reg = <0x15570000 0x100>,
<0x15570100 0x100>,
<0x15571000 0x200>,
<0x15572000 0x300>;
reg-names = "hci", "vs_hci", "unipro", "ufsp";
interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clock_fsys1 ACLK_UFS20_LINK>,
<&clock_fsys1 SCLK_UFSUNIPRO20_USER>;
clock-names = "core_clk", "sclk_unipro_main";
pinctrl-names = "default";
pinctrl-0 = <&ufs_rst_n &ufs_refclk_out>;
phys = <&ufs_phy>;
phy-names = "ufs-phy";
};
...
|
