diff options
Diffstat (limited to 'Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml b/Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml new file mode 100644 index 000000000..c5dbb91ac --- /dev/null +++ b/Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml @@ -0,0 +1,112 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/samsung,ufs-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung SoC series UFS PHY + +maintainers: + - Alim Akhtar <alim.akhtar@samsung.com> + +properties: + "#phy-cells": + const: 0 + + compatible: + enum: + - samsung,exynos7-ufs-phy + - samsung,exynosautov9-ufs-phy + - tesla,fsd-ufs-phy + + reg: + maxItems: 1 + + reg-names: + items: + - const: phy-pma + + clocks: + minItems: 1 + maxItems: 4 + + clock-names: + minItems: 1 + maxItems: 4 + + samsung,pmu-syscon: + $ref: '/schemas/types.yaml#/definitions/phandle-array' + maxItems: 1 + items: + minItems: 1 + items: + - description: phandle for PMU system controller interface, used to + control pmu registers bits for ufs m-phy + - description: offset of the pmu control register + description: + It can be phandle/offset pair. The second cell which can represent an + offset is optional. + +required: + - "#phy-cells" + - compatible + - reg + - reg-names + - clocks + - clock-names + - samsung,pmu-syscon + +allOf: + - if: + properties: + compatible: + contains: + const: samsung,exynos7-ufs-phy + + then: + properties: + clocks: + items: + - description: PLL reference clock + - description: symbol clock for input symbol (rx0-ch0 symbol clock) + - description: symbol clock for input symbol (rx1-ch1 symbol clock) + - description: symbol clock for output symbol (tx0 symbol clock) + + clock-names: + items: + - const: ref_clk + - const: rx1_symbol_clk + - const: rx0_symbol_clk + - const: tx0_symbol_clk + + else: + properties: + clocks: + items: + - description: PLL reference clock + + clock-names: + items: + - const: ref_clk + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/exynos7-clk.h> + + ufs_phy: ufs-phy@15571800 { + compatible = "samsung,exynos7-ufs-phy"; + reg = <0x15571800 0x240>; + reg-names = "phy-pma"; + samsung,pmu-syscon = <&pmu_system_controller>; + #phy-cells = <0>; + clocks = <&clock_fsys1 SCLK_COMBO_PHY_EMBEDDED_26M>, + <&clock_fsys1 PHYCLK_UFS20_RX1_SYMBOL_USER>, + <&clock_fsys1 PHYCLK_UFS20_RX0_SYMBOL_USER>, + <&clock_fsys1 PHYCLK_UFS20_TX0_SYMBOL_USER>; + clock-names = "ref_clk", "rx1_symbol_clk", + "rx0_symbol_clk", "tx0_symbol_clk"; + + }; +... |