[PATCH] ARM: dts: add BeagleBone Audio Cape (Rev A) dtsi

Jack Mitchell
2014-01-22T11:52:42Z

From: Jack Mitchell <jack@embed.me.uk>

Devicetree include file for setting up the am335x mcasp bus, i2c-2
bus, and audio codec required for a functioning BeagleBone Audio Cape.

Signed-off-by: Jack Mitchell <jack@embed.me.uk>
Signed-off-by: Matt Porter <mporter@linaro.org>
---
arch/arm/boot/dts/am335x-bone-audio-cape-reva.dtsi | 124 +++++++++++++++++++++
arch/arm/boot/dts/am335x-bone-common.dtsi | 14 +++
2 files changed, 138 insertions(+)
create mode 100644 arch/arm/boot/dts/am335x-bone-audio-cape-reva.dtsi

diff --git a/arch/arm/boot/dts/am335x-bone-audio-cape-reva.dtsi b/arch/arm/boot/dts/am335x-bone-audio-cape-reva.dtsi
new file mode 100644
index 0000000..b8ec3dc
--- /dev/null
+++ b/arch/arm/boot/dts/am335x-bone-audio-cape-reva.dtsi
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2014 Jack Mitchell <jack@embed.me.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * In order to enable the BeagleBone Audio Cape this dtsi must be
+ * incuded in the top level dts. On BeagleBone Black hardware the
+ * status of the HDMI dts node must also be set to "disabled".
+ *
+ * --- a/arch/arm/boot/dts/am335x-bone.dts
+ * +++ b/arch/arm/boot/dts/am335x-bone.dts
+ * @@ -9,6 +9,7 @@
+ *
+ * #include "am33xx.dtsi"
+ * #include "am335x-bone-common.dtsi"
+ * +#include "am335x-bone-audio-cape-reva.dtsi"
+ *
+ * &ldo3_reg {
+ * regulator-min-microvolt = <1800000>;
+ *
+ * On BeagleBone Black hardware the status of the HDMI dts node must
+ * also be set to "disabled"
+ *
+ * --- a/arch/arm/boot/dts/am335x-boneblack.dts
+ * +++ b/arch/arm/boot/dts/am335x-boneblack.dts
+ * @@ -73,6 +74,6 @@
+ * pinctrl-names = "default", "off";
+ * pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
+ * pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;
+ * - status = "okay";
+ * + status = "disabled";
+ * };
+ * };
+ */
+
+/ {
+ sound {
+ compatible = "ti,da830-evm-audio";
+ ti,model = "AM335x BeagleBone Audio Cape Rev. A";
+ ti,audio-codec = <&tlv320aic3106>;
+ ti,mcasp-controller = <&mcasp0>;
+ ti,codec-clock-rate = <12000000>;
+ ti,audio-routing =
+ "Headphone Jack", "HPLOUT",
+ "Headphone Jack", "HPROUT",
+ "LINE1L", "Line In",
+ "LINE1R", "Line In";
+ };
+
+ audio-cape-gpio-leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&bone_audio_cape_led_pins>;
+
+ audio-led0 {
+ label = "audio:green:usr0";
+ gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "heartbeat";
+ default-state = "off";
+ };
+
+ audio-led1 {
+ label = "audio:green:usr1";
+ gpios = <&gpio1 19 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "mmc0";
+ default-state = "off";
+ };
+ };
+};
+
+&am33xx_pinmux {
+ bone_audio_cape_led_pins: pinmux_bone_audio_cape_led_pins {
+ pinctrl-single,pins = <
+ 0x48 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a2.gpio1_18 */
+ 0x4c (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a3.gpio1_19 */
+ >;
+ };
+
+ bone_audio_cape_pins: bone_audio_cape_pins {
+ pinctrl-single,pins = <
+ 0x190 (PIN_INPUT_PULLUP | MUX_MODE0) /* mcasp0_aclkx.mcasp0_aclkx */
+ 0x194 (PIN_INPUT_PULLUP | MUX_MODE0) /* mcasp0_fsx.mcasp0_fsx */
+ 0x19c (PIN_INPUT_PULLUP | MUX_MODE2) /* mcasp0_ahclkr.mcasp0_axr2 */
+ 0x1ac (PIN_INPUT_PULLUP | MUX_MODE2) /* mcasp0_ahclkx.mcasp0_axr3 */
+ >;
+ };
+};
+
+&i2c2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c2_pins>;
+
+ status = "okay";
+ clock-frequency = <100000>;
+
+ tlv320aic3106: tlv320aic3106@1b {
+ compatible = "ti,tlv320aic3106";
+ reg = <0x1b>;
+ status = "okay";
+
+ /* Regulators */
+ AVDD-supply = <&vmmcsd_fixed>;
+ IOVDD-supply = <&vmmcsd_fixed>;
+ DRVDD-supply = <&vmmcsd_fixed>;
+ DVDD-supply = <&vdd1v8_fixed>;
+ };
+};
+
+&mcasp0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&bone_audio_cape_pins>;
+
+ status = "okay";
+
+ op-mode = <0>; /* MCASP_IIS_MODE */
+ tdm-slots = <2>;
+ serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */
+ 0 0 2 1
+ >;
+ tx-num-evt = <1>;
+ rx-num-evt = <1>;
+};
diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi
index e3f27ec..c1c0f74 100644
--- a/arch/arm/boot/dts/am335x-bone-common.dtsi
+++ b/arch/arm/boot/dts/am335x-bone-common.dtsi
@@ -62,12 +62,26 @@
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
+
+ vdd1v8_fixed: fixedregulator@1 {
+ compatible = "regulator-fixed";
+ regulator-name = "vdd1v8_fixed";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
};

&am33xx_pinmux {
pinctrl-names = "default";
pinctrl-0 = <&clkout2_pin>;

+ i2c2_pins: pinmux_i2c2_pins {
+ pinctrl-single,pins = <
+ 0x178 (PIN_INPUT_PULLUP | MUX_MODE3) /* uart1_ctsn.i2c2_sda */
+ 0x17c (PIN_INPUT_PULLUP | MUX_MODE3) /* uart1_rtsn.i2c2_scl */
+ >;
+ };
+
user_leds_s0: user_leds_s0 {
pinctrl-single,pins = <
0x54 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a5.gpio1_21 */
--
1.8.5.2