linux-kernel - [PATCH v5 77/80] dt-bindings: display: vc4: hdmi: Add BCM2711 HDMI controllers bindings

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Date:   Thu,  3 Sep 2020 10:01:49 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Eric Anholt <eric@...olt.net>
Cc:     dri-devel@...ts.freedesktop.org,
        linux-rpi-kernel@...ts.infradead.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Tim Gover <tim.gover@...pberrypi.com>,
        Phil Elwell <phil@...pberrypi.com>,
        Maxime Ripard <maxime@...no.tech>,
        Rob Herring <robh@...nel.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Hoegeun Kwon <hoegeun.kwon@...sung.com>,
        Stefan Wahren <stefan.wahren@...e.com>
Subject: [PATCH v5 77/80] dt-bindings: display: vc4: hdmi: Add BCM2711 HDMI controllers bindings

The HDMI controllers found in the BCM2711 SoC need some adjustments to the
bindings, especially since the registers have been shuffled around in more
register ranges.

Reviewed-by: Rob Herring <robh@...nel.org>
Tested-by: Chanwoo Choi <cw00.choi@...sung.com>
Tested-by: Hoegeun Kwon <hoegeun.kwon@...sung.com>
Tested-by: Stefan Wahren <stefan.wahren@...e.com>
Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
 Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml | 117 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 117 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml

diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
new file mode 100644
index 000000000000..03a76729d26c
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/brcm,bcm2711-hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM2711 HDMI Controller Device Tree Bindings
+
+maintainers:
+  - Eric Anholt <eric@...olt.net>
+
+properties:
+  compatible:
+    enum:
+      - brcm,bcm2711-hdmi0
+      - brcm,bcm2711-hdmi1
+
+  reg:
+    items:
+      - description: HDMI controller register range
+      - description: DVP register range
+      - description: HDMI PHY register range
+      - description: Rate Manager register range
+      - description: Packet RAM register range
+      - description: Metadata RAM register range
+      - description: CSC register range
+      - description: CEC register range
+      - description: HD register range
+
+  reg-names:
+    items:
+      - const: hdmi
+      - const: dvp
+      - const: phy
+      - const: rm
+      - const: packet
+      - const: metadata
+      - const: csc
+      - const: cec
+      - const: hd
+
+  clocks:
+    items:
+      - description: The HDMI state machine clock
+      - description: The Pixel BVB clock
+      - description: The HDMI Audio parent clock
+      - description: The HDMI CEC parent clock
+
+  clock-names:
+    items:
+      - const: hdmi
+      - const: bvb
+      - const: audio
+      - const: cec
+
+  ddc:
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/phandle
+    description: >
+      Phandle of the I2C controller used for DDC EDID probing
+
+  hpd-gpios:
+    description: >
+      The GPIO pin for the HDMI hotplug detect (if it doesn't appear
+      as an interrupt/status bit in the HDMI controller itself)
+
+  dmas:
+    maxItems: 1
+    description: >
+      Should contain one entry pointing to the DMA channel used to
+      transfer audio data.
+
+  dma-names:
+    const: audio-rx
+
+  resets:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - resets
+  - ddc
+
+additionalProperties: false
+
+examples:
+  - |
+    hdmi0: hdmi@...00700 {
+        compatible = "brcm,bcm2711-hdmi0";
+        reg = <0x7ef00700 0x300>,
+              <0x7ef00300 0x200>,
+              <0x7ef00f00 0x80>,
+              <0x7ef00f80 0x80>,
+              <0x7ef01b00 0x200>,
+              <0x7ef01f00 0x400>,
+              <0x7ef00200 0x80>,
+              <0x7ef04300 0x100>,
+              <0x7ef20000 0x100>;
+        reg-names = "hdmi",
+                    "dvp",
+                    "phy",
+                    "rm",
+                    "packet",
+                    "metadata",
+                    "csc",
+                    "cec",
+                    "hd";
+        clocks = <&firmware_clocks 13>, <&firmware_clocks 14>, <&dvp 1>, <&clk_27MHz>;
+        clock-names = "hdmi", "bvb", "audio", "cec";
+        resets = <&dvp 0>;
+        ddc = <&ddc0>;
+    };
+
+...
-- 
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