linux-kernel - [PATCH v2 2/2] ASoC: dt-bindings: fsl

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Date:   Mon, 21 Sep 2020 22:08:12 +0300
From:   "Viorel Suman (OSS)" <viorel.suman@....nxp.com>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, Timur Tabi <timur@...nel.org>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Shengjiu Wang <shengjiu.wang@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Viorel Suman <viorel.suman@....com>,
        Matthias Schiffer <matthias.schiffer@...tq-group.com>,
        Cosmin-Gabriel Samoila <cosmin.samoila@....com>,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Cc:     NXP Linux Team <linux-imx@....com>,
        Viorel Suman <viorel.suman@...il.com>
Subject: [PATCH v2 2/2] ASoC: dt-bindings: fsl_xcvr: Add document for XCVR

From: Viorel Suman <viorel.suman@....com>

XCVR (Audio Transceiver) is a new IP module found on i.MX8MP.

Signed-off-by: Viorel Suman <viorel.suman@....com>
---
 .../devicetree/bindings/sound/fsl,xcvr.yaml        | 103 +++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/fsl,xcvr.yaml

diff --git a/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml b/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml
new file mode 100644
index 00000000..8abab2d
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml
@@ -0,0 +1,103 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/fsl,xcvr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP Audio Transceiver (XCVR) Controller
+
+maintainers:
+  - Viorel Suman <viorel.suman@....com>
+
+properties:
+  $nodename:
+    pattern: "^xcvr@.*"
+
+  compatible:
+    const: fsl,imx8mp-xcvr
+
+  reg:
+    items:
+      - description: 20K RAM for code and data
+      - description: registers space
+      - description: RX FIFO address
+      - description: TX FIFO address
+
+  reg-names:
+    items:
+      - const: ram
+      - const: regs
+      - const: rxfifo
+      - const: txfifo
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Peripheral clock
+      - description: PHY clock
+      - description: SPBA clock
+      - description: PLL clock
+
+  clock-names:
+    items:
+      - const: ipg
+      - const: phy
+      - const: spba
+      - const: pll_ipg
+
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
+  firmware-name:
+    $ref: /schemas/types.yaml#/definitions/string
+    const: imx/xcvr/xcvr-imx8mp.bin
+    description: |
+      Should contain the name of the default firmware image
+      file located on the firmware search path
+
+  resets:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+  - firmware-name
+  - resets
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/imx8mp-clock.h>
+    #include <dt-bindings/reset/imx8mp-reset.h>
+
+    xcvr: xcvr@...c0000 {
+           compatible = "fsl,imx8mp-xcvr";
+           reg = <0x30cc0000 0x800>,
+                 <0x30cc0800 0x400>,
+                 <0x30cc0c00 0x080>,
+                 <0x30cc0e00 0x080>;
+           reg-names = "ram", "regs", "rxfifo", "txfifo";
+           interrupts = <0x0 128 IRQ_TYPE_LEVEL_HIGH>;
+           clocks = <&audiomix_clk IMX8MP_CLK_AUDIOMIX_EARC_IPG>,
+                    <&audiomix_clk IMX8MP_CLK_AUDIOMIX_EARC_PHY>,
+                    <&audiomix_clk IMX8MP_CLK_AUDIOMIX_SPBA2_ROOT>,
+                    <&audiomix_clk IMX8MP_CLK_AUDIOMIX_AUDPLL_ROOT>;
+           clock-names = "ipg", "phy", "spba", "pll_ipg";
+           dmas = <&sdma2 30 2 0>, <&sdma2 31 2 0>;
+           dma-names = "rx", "tx";
+           firmware-name = "imx/xcvr/xcvr-imx8mp.bin";
+           resets = <&audiomix_reset 0>;
+    };
-- 
2.7.4