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Message-Id: <20210817101119.423853-3-frattaroli.nicolas@gmail.com>
Date: Tue, 17 Aug 2021 12:11:17 +0200
From: Nicolas Frattaroli <frattaroli.nicolas@...il.com>
To: Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Heiko Stuebner <heiko@...ech.de>,
Nicolas Frattaroli <frattaroli.nicolas@...il.com>
Cc: alsa-devel@...a-project.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] dt-bindings: sound: add rockchip i2s-tdm binding
This adds the YAML bindings for the Rockchip I2S/TDM audio driver.
Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas@...il.com>
---
.../bindings/sound/rockchip,i2s-tdm.yaml | 221 ++++++++++++++++++
include/dt-bindings/sound/rockchip,i2s-tdm.h | 9 +
2 files changed, 230 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml
create mode 100644 include/dt-bindings/sound/rockchip,i2s-tdm.h
diff --git a/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml b/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml
new file mode 100644
index 000000000000..c3022620b47f
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml
@@ -0,0 +1,221 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/rockchip,i2s-tdm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip I2S/TDM Controller
+
+description:
+ The Rockchip I2S/TDM Controller is a Time Division Multiplexed
+ audio interface found in various Rockchip SoCs, allowing up
+ to 8 channels of audio over a serial interface.
+
+maintainers:
+ - Nicolas Frattaroli <frattaroli.nicolas@...il.com>
+
+properties:
+ compatible:
+ enum:
+ - rockchip,px30-i2s-tdm
+ - rockchip,rk1808-i2s-tdm
+ - rockchip,rk3308-i2s-tdm
+ - rockchip,rk3568-i2s-tdm
+ - rockchip,rv1126-i2s-tdm
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ dmas:
+ minItems: 1
+ maxItems: 2
+
+ dma-names:
+ oneOf:
+ - const: rx
+ - items:
+ - const: tx
+ - const: rx
+
+ clocks:
+ items:
+ - description: clock for TX
+ - description: clock for RX
+ - description: clock for I2S bus
+
+ clock-names:
+ items:
+ - const: mclk_tx
+ - const: mclk_rx
+ - const: hclk
+
+ rockchip,frame-width:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 64
+ minimum: 32
+ maximum: 512
+ description:
+ Width of a frame, usually slot width multiplied by number of slots.
+ Must be even.
+
+ resets:
+ items:
+ - description: reset for TX
+ - description: reset for RX
+
+ reset-names:
+ items:
+ - const: tx-m
+ - const: rx-m
+
+ rockchip,cru:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ The phandle of the cru.
+ Required if both playback and capture are used, i.e. if rockchip,clk-trcm
+ is 0.
+
+ rockchip,grf:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ The phandle of the syscon node for the GRF register.
+
+ rockchip,mclk-calibrate:
+ description:
+ Enable mclk source calibration.
+ type: boolean
+
+ rockchip,trcm-sync:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Which lrck/bclk clocks each direction will sync to. You should use the
+ constants in <dt-bindings/sound/rockchip,i2s-tdm.h>
+ oneOf:
+ - const: 0
+ description:
+ RK_TRCM_TXRX. Use both the TX and the RX clock for TX and RX.
+ - const: 1
+ description:
+ RK_TRCM_TX. Use only the TX clock for TX and RX.
+ - const: 2
+ description:
+ RK_TRCM_RX. Use only the RX clock for TX and RX.
+
+ "#sound-dai-cells":
+ const: 0
+
+ rockchip,no-dmaengine:
+ description:
+ If present, driver will not register a pcm dmaengine, only the dai.
+ If the dai is part of multi-dais, the property should be present.
+ type: boolean
+
+ rockchip,playback-only:
+ description: Specify that the controller only has playback capability.
+ type: boolean
+
+ rockchip,capture-only:
+ description: Specify that the controller only has capture capability.
+ type: boolean
+
+ rockchip,i2s-rx-route:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Defines the mapping of I2S RX sdis to I2S data bus lines.
+ By default, they are mapped one-to-one.
+ items:
+ - description: which sdi to connect to data line 0
+ - description: which sdi to connect to data line 1
+ - description: which sdi to connect to data line 2
+ - description: which sdi to connect to data line 3
+
+ rockchip,i2s-tx-route:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Defines the mapping of I2S TX sdos to I2S data bus lines.
+ By default, they are mapped one-to-one.
+ items:
+ - description: which sdo to connect to data line 0
+ - description: which sdo to connect to data line 1
+ - description: which sdo to connect to data line 2
+ - description: which sdo to connect to data line 3
+
+ rockchip,tdm-fsync-half-frame:
+ description: Whether to use half frame fsync.
+ type: boolean
+
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - dmas
+ - dma-names
+ - clocks
+ - clock-names
+ - resets
+ - reset-names
+ - rockchip,grf
+ - "#sound-dai-cells"
+ - rockchip,trcm-sync
+
+allOf:
+ - if:
+ properties:
+ rockchip,clk-trcm:
+ contains:
+ enum: [0]
+ then:
+ required:
+ - rockchip,cru
+
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/rk3568-cru.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/pinctrl/rockchip.h>
+ #include <dt-bindings/sound/rockchip,i2s-tdm.h>
+
+
+ foo {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ i2s@...10000 {
+ compatible = "rockchip,rk3568-i2s-tdm";
+ reg = <0x0 0xfe410000 0x0 0x1000>;
+ interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cru MCLK_I2S1_8CH_TX>, <&cru MCLK_I2S1_8CH_RX>,
+ <&cru HCLK_I2S1_8CH>;
+ clock-names = "mclk_tx", "mclk_rx", "hclk";
+ dmas = <&dmac1 2>, <&dmac1 3>;
+ dma-names = "tx", "rx";
+ resets = <&cru SRST_M_I2S1_8CH_TX>, <&cru SRST_M_I2S1_8CH_RX>;
+ reset-names = "tx-m", "rx-m";
+ rockchip,trcm-sync = <RK_TRCM_TX>;
+ rockchip,cru = <&cru>;
+ rockchip,grf = <&grf>;
+ #sound-dai-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 =
+ <&i2s1m0_sclktx
+ &i2s1m0_sclkrx
+ &i2s1m0_lrcktx
+ &i2s1m0_lrckrx
+ &i2s1m0_sdi0
+ &i2s1m0_sdi1
+ &i2s1m0_sdi2
+ &i2s1m0_sdi3
+ &i2s1m0_sdo0
+ &i2s1m0_sdo1
+ &i2s1m0_sdo2
+ &i2s1m0_sdo3>;
+ status = "disabled";
+ };
+ };
diff --git a/include/dt-bindings/sound/rockchip,i2s-tdm.h b/include/dt-bindings/sound/rockchip,i2s-tdm.h
new file mode 100644
index 000000000000..32494d64cf33
--- /dev/null
+++ b/include/dt-bindings/sound/rockchip,i2s-tdm.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _DT_BINDINGS_ROCKCHIP_I2S_TDM_H
+#define _DT_BINDINGS_ROCKCHIP_I2S_TDM_H
+
+#define RK_TRCM_TXRX 0
+#define RK_TRCM_TX 1
+#define RK_TRCM_RX 2
+
+#endif /* _DT_BINDINGS_ROCKCHIP_I2S_TDM_H */
--
2.32.0
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