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Message-Id: <20220416135458.104048-2-linux@fw-web.de>
Date:   Sat, 16 Apr 2022 15:54:53 +0200
From:   Frank Wunderlich <linux@...web.de>
To:     linux-rockchip@...ts.infradead.org
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Krzysztof WilczyƄski <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Johan Jonker <jbx6244@...il.com>,
        Peter Geis <pgwipeout@...il.com>,
        Michael Riesch <michael.riesch@...fvision.net>,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org
Subject: [RFC/RFT 1/6] dt-bindings: phy: rockchip: add pcie3 phy

From: Frank Wunderlich <frank-w@...lic-files.de>

Add a new binding file for Rockchip PCIe V3 phy driver.

Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
 .../bindings/phy/rockchip-pcie3-phy.yaml      | 77 +++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/rockchip-pcie3-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/rockchip-pcie3-phy.yaml b/Documentation/devicetree/bindings/phy/rockchip-pcie3-phy.yaml
new file mode 100644
index 000000000000..58a8ce175f13
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/rockchip-pcie3-phy.yaml
@@ -0,0 +1,77 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/rockchip-pcie3-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip PCIe v3 phy
+
+maintainers:
+  - Heiko Stuebner <heiko@...ech.de>
+
+properties:
+  compatible:
+    enum:
+      - rockchip,rk3568-pcie3-phy
+      - rockchip,rk3588-pcie3-phy
+
+  reg:
+    maxItems: 2
+
+  clocks:
+    minItems: 1
+    maxItems: 3
+
+  clock-names:
+    contains:
+      anyOf:
+        - enum: [ refclk_m, refclk_n, pclk ]
+
+  "#phy-cells":
+    const: 0
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    const: phy
+
+  rockchip,phy-grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle to the syscon managing the phy "general register files"
+
+  rockchip,pipe-grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle to the syscon managing the pipe "general register files"
+
+  rockchip,pcie30-phymode:
+    $ref: '/schemas/types.yaml#/definitions/uint32'
+    description: |
+      use PHY_MODE_PCIE_AGGREGATION if not defined
+    minimum: 0x0
+    maximum: 0x4
+
+
+required:
+  - compatible
+  - reg
+  - rockchip,phy-grf
+
+additionalProperties: false
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rk3568-cru.h>
+    pcie30phy: phy@...c0000 {
+      compatible = "rockchip,rk3568-pcie3-phy";
+      reg = <0x0 0xfe8c0000 0x0 0x20000>;
+      #phy-cells = <0>;
+      clocks = <&pmucru CLK_PCIE30PHY_REF_M>, <&pmucru CLK_PCIE30PHY_REF_N>,
+       <&cru PCLK_PCIE30PHY>;
+      clock-names = "refclk_m", "refclk_n", "pclk";
+      resets = <&cru SRST_PCIE30PHY>;
+      reset-names = "phy";
+      rockchip,phy-grf = <&pcie30_phy_grf>;
+    };
-- 
2.25.1

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