linux-kernel - [PATCH v4 1/5] dt-bindings: phy: Document Samsung UFS PHY bindings

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Date:   Fri, 27 Mar 2020 22:36:34 +0530
From:   Alim Akhtar <alim.akhtar@...sung.com>
To:     robh+dt@...nel.org, devicetree@...r.kernel.org,
        linux-scsi@...r.kernel.org
Cc:     krzk@...nel.org, avri.altman@....com, martin.petersen@...cle.com,
        kwmad.kim@...sung.com, stanley.chu@...iatek.com,
        cang@...eaurora.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Alim Akhtar <alim.akhtar@...sung.com>
Subject: [PATCH v4 1/5] dt-bindings: phy: Document Samsung UFS PHY bindings

This patch documents Samsung UFS PHY device tree bindings

Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com>
---
 .../bindings/phy/samsung,ufs-phy.yaml         | 67 +++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml

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 000000000000..41ba481ecc76
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/samsung,ufs-phy.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0)
+%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 Device Tree Bindings
+
+maintainers:
+  - Alim Akhtar <alim.akhtar@...sung.com>
+
+properties:
+  "#phy-cells":
+    const: 0
+
+  compatible:
+    enum:
+      - samsung,exynos7-ufs-phy
+
+  reg:
+    maxItems: 1
+    description: PHY base register address
+
+  reg-names:
+    items:
+      - const: phy-pma
+
+  clocks:
+    items:
+      - description: PLL reference clock
+      - description: Referencec clock parrent
+
+  clock-names:
+    items:
+      - const: ref_clk_parent
+      - const: ref_clk
+
+  samsung,pmu-syscon:
+    $ref: '/schemas/types.yaml#/definitions/phandle'
+    description: phandle for PMU system controller interface, used to
+                 control pmu registers for power isolation
+
+required:
+  - "#phy-cells"
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - samsung,pmu-syscon
+
+examples:
+  - |
+    #include <dt-bindings/clock/exynos7-clk.h>
+
+    ufs_phy: ufs-phy@...71800 {
+        compatible = "samsung,exynos7-ufs-phy";
+        reg = <0x15571800 0x240>;
+        reg-names = "phy-pma";
+        samsung,pmu-syscon = <&pmu_system_controller>;
+        #phy-cells = <0>;
+        clocks = <&clock_fsys1 MOUT_FSYS1_PHYCLK_SEL1>,
+                 <&clock_top1 CLK_SCLK_PHY_FSYS1_26M>;
+        clock-names = "ref_clk_parent",
+                      "ref_clk";
+    };
+...

base-commit: fb33c6510d5595144d585aa194d377cf74d31911
-- 
2.17.1