linux-kernel - [PATCH v4 3/6] dt-bindindgs: clock: nxp: support i.MX95 Display Master CSR module

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Message-Id: <20240314-imx95-blk-ctl-v4-3-d23de23b6ff2@nxp.com>
Date: Thu, 14 Mar 2024 21:25:12 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Abel Vesa <abelvesa@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>
Cc: linux-clk@...r.kernel.org, imx@...ts.linux.dev, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH v4 3/6] dt-bindindgs: clock: nxp: support i.MX95 Display
 Master CSR module

From: Peng Fan <peng.fan@....com>

i.MX95 DISPLAY_MASTER_CSR includes registers to control DSI clock settings,
clock gating, and pixel link select. Add dt-binding for it.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 .../clock/nxp,imx95-display-master-csr.yaml        | 62 ++++++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/nxp,imx95-display-master-csr.yaml b/Documentation/devicetree/bindings/clock/nxp,imx95-display-master-csr.yaml
new file mode 100644
index 000000000000..ed0ec3a24d09
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/nxp,imx95-display-master-csr.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/nxp,imx95-display-master-csr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP i.MX95 Display Master Block Control
+
+maintainers:
+  - Peng Fan <peng.fan@....com>
+
+properties:
+  compatible:
+    items:
+      - const: nxp,imx95-display-master-csr
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+    description:
+      The clock consumer should specify the desired clock by having the clock
+      ID in its "clocks" phandle cell. See
+      include/dt-bindings/clock/nxp,imx95-clock.h
+
+  mux-controller:
+    type: object
+    $ref: /schemas/mux/reg-mux.yaml
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+  - mux-controller
+
+additionalProperties: false
+
+examples:
+  - |
+    syscon@...10000 {
+      compatible = "nxp,imx95-display-master-csr", "syscon";
+      reg = <0x4c410000 0x10000>;
+      #clock-cells = <1>;
+      clocks = <&scmi_clk 62>;
+      power-domains = <&scmi_devpd 3>;
+
+      mux: mux-controller {
+        compatible = "mmio-mux";
+        #mux-control-cells = <1>;
+        mux-reg-masks = <0x4 0x00000001>; /* Pixel_link_sel */
+        idle-states = <0>;
+      };
+    };
+...

-- 
2.37.1