PROCESSOR-SDK-AM62X: Need to on/off GPIO0_39(buzzer) on AM62X EVK

Hello Dnyaneshwar,

Can you clarify what you mean by buzzer? Are you trying to connect a buzzer to the GPIO?

Thanks,

Anshu

Yes.It is already connected to EVM on GPIO0_39. its TMB12A05 active buzzer. I have tried to on it but it is not turning on. I have added AM62X_IOPAD(0x00a0, PIN_INPUT_PULLUP, 7) /* (K25) GPMC0_WPn.GPIO0_39 */ in k3-am62x-sk-common.dtsi file .

Same thing i have done with AM62X EVK there i can able to control the GPIO0_39 means when i enter echo 0 > value it gives 0 and vice versa.

But here it is not working 

Here you can see after doing echo 1 > value it shows 0.

Just to confirm, if you disconnect the buzzer and run the commands, what happens? 

Typically, if the value doesn't change, then there is a mistake with the device tree.

Thanks,

Anshu

actually we have connected  buzzer to evm board so we can not able to remove it .

How can i modify the device tree so that it can turn on buzzer 

below you can find dts file also.

// SPDX-License-Identifier: GPL-2.0
/*
* AM625 SK: www.ti.com/.../sprr448
*
* Copyright (C) 2021-2022 Texas Instruments Incorporated - https://www.ti.com/
*/

/dts-v1/;

#include "k3-am62x-sk-common.dtsi"

/ {
compatible = "ti,am625-sk", "ti,am625";
model = "Texas Instruments AM625 SK";

opp-table {
/* Add 1.4GHz OPP for am625-sk board. Requires VDD_CORE to be at 0.85V */
opp-1400000000 {
opp-hz = /bits/ 64 <1400000000>;
opp-supported-hw = <0x01 0x0004>;
clock-latency-ns = <6000000>;
};
};

buzzer {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&buzzer_pins_default>;
};

memory@80000000 {
device_type = "memory";
/* 2G RAM */
reg = <0x00000000 0x80000000 0x00000000 0x80000000>;

};

vmain_pd: regulator-0 {
/* TPS65988 PD CONTROLLER OUTPUT */
compatible = "regulator-fixed";
regulator-name = "vmain_pd";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
regulator-boot-on;
};

vcc_5v0: regulator-1 {
/* Output of LM34936 */
compatible = "regulator-fixed";
regulator-name = "vcc_5v0";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
vin-supply = <&vmain_pd>;
regulator-always-on;
regulator-boot-on;
};

vcc_3v3_sys: regulator-2 {
/* output of LM61460-Q1 */
compatible = "regulator-fixed";
regulator-name = "vcc_3v3_sys";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
vin-supply = <&vmain_pd>;
regulator-always-on;
regulator-boot-on;
};

vdd_mmc1: regulator-3 {
/* TPS22918DBVR */
compatible = "regulator-fixed";
regulator-name = "vdd_mmc1";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
enable-active-high;
vin-supply = <&vcc_3v3_sys>;
//gpio = <&exp1 3 GPIO_ACTIVE_HIGH>;
};

vdd_sd_dv: regulator-4 {
/* Output of TLV71033 */
compatible = "regulator-gpio";
regulator-name = "tlv71033";
pinctrl-names = "default";
pinctrl-0 = <&vdd_sd_dv_pins_default>;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
vin-supply = <&vcc_5v0>;
gpios = <&main_gpio0 31 GPIO_ACTIVE_LOW>;
states = <3300000 0x0>,
<3300000 0x1>;
};

vcc_1v8: regulator-5 {
/* output of TPS6282518DMQ */
compatible = "regulator-fixed";
regulator-name = "vcc_1v8";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
vin-supply = <&vcc_3v3_sys>;
regulator-always-on;
regulator-boot-on;
};

wlan_lten: regulator-6 {
compatible = "regulator-fixed";
regulator-name = "wlan_lten";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
vin-supply = <&vcc_3v3_sys>;
gpios = <&exp1 11 GPIO_ACTIVE_LOW>;
};

wlan_en: regulator-7 {
compatible = "regulator-fixed";
regulator-name = "wlan_en";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
vin-supply = <&wlan_lten>;
enable-active-high;
gpios = <&main_gpio0 71 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&wlan_en_pins_default>;
};

vdd_core: regulator-8 {
/* output of TPS62826DMQ */
compatible = "regulator-fixed";
regulator-name = "vdd_core";
regulator-min-microvolt = <850000>;
regulator-max-microvolt = <850000>;
vin-supply = <&vcc_3v3_sys>;
regulator-always-on;
regulator-boot-on;
};
};

&main_pmx0 {
main_rmii2_pins_default: main-rmii2-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x168, PIN_INPUT, 1) /* (AE21) RGMII2_TXC.RMII2_CRS_DV */
AM62X_IOPAD(0x180, PIN_INPUT, 1) /* (AD23) RGMII2_RXC.RMII2_REF_CLK */
AM62X_IOPAD(0x184, PIN_INPUT, 1) /* (AE23) RGMII2_RD0.RMII2_RXD0 */
AM62X_IOPAD(0x188, PIN_INPUT, 1) /* (AB20) RGMII2_RD1.RMII2_RXD1 */
AM62X_IOPAD(0x17c, PIN_OUTPUT_PULLUP, 7) /* (AD22) RGMII2_RX_CTL.RMII2_RX_ER */
AM62X_IOPAD(0x16c, PIN_OUTPUT, 1) /* (Y18) RGMII2_TD0.RMII2_TXD0 */
AM62X_IOPAD(0x170, PIN_OUTPUT, 1) /* (AA18) RGMII2_TD1.RMII2_TXD1 */
AM62X_IOPAD(0x164, PIN_OUTPUT, 1) /* (AA19) RGMII2_TX_CTL.RMII2_TX_EN */
>;
};

refclk1_and_reset_pins_default: refclk1-and-reset-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x1f0, PIN_OUTPUT_PULLUP, 5) /* (A18) EXT_REFCLK1 */
AM62X_IOPAD(0x254, PIN_OUTPUT_PULLUP, 7) /* (C20) USB0_DRVVBUS */
>;
};

ospi0_pins_default: ospi0-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x000, PIN_OUTPUT, 0) /* (H24) OSPI0_CLK */
AM62X_IOPAD(0x02c, PIN_OUTPUT, 0) /* (F23) OSPI0_CSn0 */
AM62X_IOPAD(0x00c, PIN_INPUT, 0) /* (E25) OSPI0_D0 */
AM62X_IOPAD(0x010, PIN_INPUT, 0) /* (G24) OSPI0_D1 */
AM62X_IOPAD(0x014, PIN_INPUT, 0) /* (F25) OSPI0_D2 */
AM62X_IOPAD(0x018, PIN_INPUT, 0) /* (F24) OSPI0_D3 */
AM62X_IOPAD(0x01c, PIN_INPUT, 0) /* (J23) OSPI0_D4 */
AM62X_IOPAD(0x020, PIN_INPUT, 0) /* (J25) OSPI0_D5 */
AM62X_IOPAD(0x024, PIN_INPUT, 0) /* (H25) OSPI0_D6 */
AM62X_IOPAD(0x028, PIN_INPUT, 0) /* (J22) OSPI0_D7 */
AM62X_IOPAD(0x008, PIN_INPUT, 0) /* (J24) OSPI0_DQS */
>;
};

buzzer_pins_default: buzzer-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0xa0, PIN_INPUT_PULLUP, 7) //GPIO0_39
>;
};

vdd_sd_dv_pins_default: vdd-sd-dv-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x07c, PIN_OUTPUT, 7) /* (P25) GPMC0_CLK.GPIO0_31 */
>;
};

main_gpio1_ioexp_intr_pins_default: main-gpio1-ioexp-intr-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x01d4, PIN_INPUT, 7) /* (B15) UART0_RTSn.GPIO1_23 */
>;
};

wlan_en_pins_default: wlan-en-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x124, PIN_OUTPUT, 7) /* (A23) MMC2_SDCD.GPIO0_71 */
>;
};

main_mmc2_pins_default: main-mmc2-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x120, PIN_INPUT, 0) /* (C24) MMC2_CMD */
AM62X_IOPAD(0x118, PIN_INPUT, 0) /* (D25) MMC2_CLK */
AM62X_IOPAD(0x114, PIN_INPUT, 0) /* (B24) MMC2_DAT0 */
AM62X_IOPAD(0x110, PIN_INPUT, 0) /* (C25) MMC2_DAT1 */
AM62X_IOPAD(0x10c, PIN_INPUT, 0) /* (E23) MMC2_DAT2 */
AM62X_IOPAD(0x108, PIN_INPUT, 0) /* (D24) MMC2_DAT3 */
AM62X_IOPAD(0x11c, PIN_INPUT, 0) /* (#N/A) MMC2_CLKB */
>;
};

main_wlirq_pins_default: main-wlirq-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x128, PIN_INPUT, 7) /* (B23) MMC2_SDWP.GPIO0_72 */
>;
};
};

&main_i2c1 {
exp1: gpio@22 {
compatible = "ti,tca6424";
reg = <0x22>;
gpio-controller;
#gpio-cells = <2>;
gpio-line-names = "GPIO_CPSW2_RST", "GPIO_CPSW1_RST",
"PRU_DETECT", "MMC1_SD_EN",
"VPP_LDO_EN", "EXP_PS_3V3_En",
"EXP_PS_5V0_En", "EXP_HAT_DETECT",
"GPIO_AUD_RSTn", "GPIO_eMMC_RSTn",
"UART1_FET_BUF_EN", "WL_LT_EN",
"GPIO_HDMI_RSTn", "CSI_GPIO1",
"CSI_GPIO2", "PRU_3V3_EN",
"HDMI_INTn", "PD_I2C_IRQ",
"MCASP1_FET_EN", "MCASP1_BUF_BT_EN",
"MCASP1_FET_SEL", "UART1_FET_SEL",
"TSINT#", "IO_EXP_TEST_LED";

interrupt-parent = <&main_gpio1>;
interrupts = <23 IRQ_TYPE_EDGE_FALLING>;
interrupt-controller;
#interrupt-cells = <2>;

pinctrl-names = "default";
pinctrl-0 = <&main_gpio1_ioexp_intr_pins_default>;
};
};

&sdhci1 {
//vmmc-supply = <&vdd_mmc1>;
//vqmmc-supply = <&vdd_sd_dv>;
};

&sdhci2 {
status = "okay";
vmmc-supply = <&wlan_en>;
pinctrl-names = "default";
pinctrl-0 = <&main_mmc2_pins_default>;
bus-width = <4>;
non-removable;
ti,fails-without-test-cd;
cap-power-off-card;
keep-power-in-suspend;
assigned-clocks = <&k3_clks 157 158>;
assigned-clock-parents = <&k3_clks 157 160>;

#address-cells = <1>;
#size-cells = <0>;
wlcore: wlcore@2 {
compatible = "ti,wl1837";
reg = <2>;
pinctrl-names = "default";
pinctrl-0 = <&main_wlirq_pins_default>;
interrupt-parent = <&main_gpio0>;
interrupts = <72 IRQ_TYPE_EDGE_RISING>;
};
};

&cpsw3g {
pinctrl-names = "default";
pinctrl-0 = <&main_rgmii1_pins_default
&main_rmii2_pins_default
&refclk1_and_reset_pins_default>;
assigned-clocks = <&k3_clks 157 20>;
assigned-clock-parents = <&k3_clks 157 21>;

cpts@3d000 {
/* MAP HW3_TS_PUSH to GENF1 */
ti,pps = <2 1>;
};
};

&cpsw_port2 {
phy-mode = "rmii";
phy-handle = <&cpsw3g_phy1>;
phy-reset-gpios = <&main_gpio1 50 GPIO_PULL_UP>;
phy-reset-duration = <1000>;
status = "okay";
};

&cpsw3g_mdio {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&main_mdio1_pins_default>;

cpsw3g_phy1: ethernet-phy@1 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <1>;
};
};

&ospi0 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&ospi0_pins_default>;

flash@0{
compatible = "jedec,spi-nor";
reg = <0x0>;
spi-tx-bus-width = <8>;
spi-rx-bus-width = <8>;
spi-max-frequency = <25000000>;
cdns,tshsl-ns = <60>;
cdns,tsd2d-ns = <60>;
cdns,tchsh-ns = <60>;
cdns,tslch-ns = <60>;
cdns,read-delay = <4>;

partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;

partition@0 {
label = "ospi.tiboot3";
reg = <0x0 0x80000>;
};

partition@80000 {
label = "ospi.tispl";
reg = <0x80000 0x200000>;
};

partition@280000 {
label = "ospi.u-boot";
reg = <0x280000 0x400000>;
};

partition@680000 {
label = "ospi.env";
reg = <0x680000 0x40000>;
};

partition@6c0000 {
label = "ospi.env.backup";
reg = <0x6c0000 0x40000>;
};

partition@800000 {
label = "ospi.rootfs";
reg = <0x800000 0x37c0000>;
};

partition@3fc0000 {
label = "ospi.phypattern";
reg = <0x3fc0000 0x40000>;
};
};
};
};

&tlv320aic3106 {
DVDD-supply = <&vcc_1v8>;
};

#define K3_TS_OFFSET(pa, val) (0x4+(pa)*4) (0x10000 | val)

&timesync_router {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&cpsw_cpts>;

/* Use Time Sync Router to map GENF1 input to HW3_TS_PUSH output */
cpsw_cpts: cpsw-cpts {
pinctrl-single,pins = <
/* pps [cpsw cpts genf1] in17 -> out12 [cpsw cpts hw3_push] */
K3_TS_OFFSET(12, 17)
>;
};
};

Hi,

Change the reference node name to &buzzer, not buzzer.

Thanks,

Anshu

Like this one :- 

&buzzer {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&buzzer_pins_default>;
};

Any other changes needs to do ?

Hi,

Try that first. Was there a different result?

Thanks,

Anshu

After applying &buzzer it is giving error while creating the dtb file .fig 1

but when i remove that its successfully created dtb file fig 2

You can see both image below 

fig 1

fig 2

Now what to do ?

but when i checked with multimeter on SK-AM62X EVK board then GPIO0_39 it gives 3.3v when i type command echo 1 > value ; cat value = 1 

and when i type the command echo 0 > value; cat value = 0 then its shows 0 voltage on multimeter.

Is the case that buzzer is not getting sufficient voltage ?

Hi,

Move the buzzer reference node to closer to the bottom with the other reference nodes.

We cannot provide support for non-TI products, so I recommend you speak with the manufacturer of the buzzer to get help with that.

Thanks,

Anshu

Can you just show me that how to do that by taking example of my dts file ?

Hi

I tried to add buzzer reference node to closer to the bottom with other reference nodes but still i am not able to make dtb file.

Tried in both cases buzzer and &buzzer both cases giving error .

Hello,

Put the PinMux definitions in the main_pmx0 node.

The error says its on line 390 but the snapshot of your device tree has 390 on the timesync router.

Thanks,

Anshu

&main_pmx0 {
main_rmii2_pins_default: main-rmii2-pins-default {
pinctrl-single,pins = <
// AM62X_IOPAD(0x184, PIN_INPUT, 0) /* (AE23) RGMII2_RD0 */
// AM62X_IOPAD(0x188, PIN_INPUT, 0) /* (AB20) RGMII2_RD1 */
// AM62X_IOPAD(0x18c, PIN_INPUT, 0) /* (AC21) RGMII2_RD2 */
// AM62X_IOPAD(0x190, PIN_INPUT, 0) /* (AE22) RGMII2_RD3 */
// AM62X_IOPAD(0x180, PIN_INPUT, 0) /* (AD23) RGMII2_RXC */
// AM62X_IOPAD(0x17c, PIN_INPUT, 0) /* (AD22) RGMII2_RX_CTL */
// AM62X_IOPAD(0x16c, PIN_OUTPUT, 0) /* (Y18) RGMII2_TD0 */
// AM62X_IOPAD(0x170, PIN_OUTPUT, 0) /* (AA18) RGMII2_TD1 */
// AM62X_IOPAD(0x174, PIN_OUTPUT, 0) /* (AD21) RGMII2_TD2 */
// AM62X_IOPAD(0x178, PIN_OUTPUT, 0) /* (AC20) RGMII2_TD3 */
// AM62X_IOPAD(0x168, PIN_OUTPUT, 0) /* (AE21) RGMII2_TXC */
// AM62X_IOPAD(0x164, PIN_OUTPUT, 0) /* (AA19) RGMII2_TX_CTL */

AM62X_IOPAD(0x168, PIN_INPUT, 1) /* (AE21) RGMII2_TXC.RMII2_CRS_DV */
AM62X_IOPAD(0x180, PIN_INPUT, 1) /* (AD23) RGMII2_RXC.RMII2_REF_CLK */
AM62X_IOPAD(0x184, PIN_INPUT, 1) /* (AE23) RGMII2_RD0.RMII2_RXD0 */
AM62X_IOPAD(0x188, PIN_INPUT, 1) /* (AB20) RGMII2_RD1.RMII2_RXD1 */
AM62X_IOPAD(0x17c, PIN_OUTPUT_PULLUP, 7) /* (AD22) RGMII2_RX_CTL.RMII2_RX_ER */
AM62X_IOPAD(0x16c, PIN_OUTPUT, 1) /* (Y18) RGMII2_TD0.RMII2_TXD0 */
AM62X_IOPAD(0x170, PIN_OUTPUT, 1) /* (AA18) RGMII2_TD1.RMII2_TXD1 */
AM62X_IOPAD(0x164, PIN_OUTPUT, 1) /* (AA19) RGMII2_TX_CTL.RMII2_TX_EN */
>;
};
refclk1_and_reset_pins_default: refclk1-and-reset-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x1f0, PIN_OUTPUT_PULLUP, 5) /* (A18) EXT_REFCLK1 */
AM62X_IOPAD(0x254, PIN_OUTPUT_PULLUP, 7) /* (C20) USB0_DRVVBUS */
>;
};

buzzer_pins_default: buzzer-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x00a0, PIN_INPUT_PULLUP, 7) //GPIO0_39
>;
};

Like this i have added i can able to create DTB file also only problem is to still buzzer is not turning on/off ?

#include "k3-am62x-sk-common.dtsi"

/ {
compatible = "ti,am625-sk", "ti,am625";
model = "Texas Instruments AM625 SK";

opp-table {
/* Add 1.4GHz OPP for am625-sk board. Requires VDD_CORE to be at 0.85V */
opp-1400000000 {
opp-hz = /bits/ 64 <1400000000>;
opp-supported-hw = <0x01 0x0004>;
clock-latency-ns = <6000000>;
};
};

buzzer {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&buzzer_pins_default>;

};
memory@80000000 {
device_type = "memory";
/* 2G RAM */
reg = <0x00000000 0x80000000 0x00000000 0x80000000>;

};

Like this buzzer reference node is here only without &buzzer i can able to create dtb file ,are you telling me to add somewhere else ?

Hi Anshu

Is there other changes needs to do in k3-am62x-sk-common.dtsi file ?

Regards,

Dnyaneshwar