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msm-5.15/arch/arm64/boot/dts/qcom/apq8016-sbc.dts
Stephan Gerhold 04f16697d3 arm64: dts: qcom: apq8016-sbc: Fix 1.8V power rail on LS expansion 
[ Upstream commit 5500f823db38db073d30557af159b77fb1f2bf26 ]

The 96Boards specification expects a 1.8V power rail on the low-speed
expansion connector that is able to provide at least 0.18W / 100 mA.
According to the DB410c hardware user manual this is done by connecting
both L15 and L16 in parallel with up to 55mA each (for 110 mA total) [1].

Unfortunately the current regulator setup in the DB410c device tree
does not implement the specification correctly and only provides 5 mA:

  - Only L15 is marked always-on, so L16 is never enabled.
  - Without specifying a load the regulator is put into LPM where
    it can only provide 5 mA.

Fix this by:

  - Adding proper voltage constraints for L16.
  - Making L16 always-on.
  - Adding regulator-system-load for both L15 and L16. 100 mA should be
    available in total, so specify 50 mA for each. (The regulator
    hardware can only be in normal (55 mA) or low-power mode (5 mA) so
    this will actually result in the expected 110 mA total...)

[1]: https://www.96boards.org/documentation/consumer/dragonboard/dragonboard410c/hardware-docs/hardware-user-manual.md.html#power-supplies

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Fixes: 828dd5d66f ("arm64: dts: apq8016-sbc: make 1.8v available on LS expansion")
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230510-msm8916-regulators-v1-2-54d4960a05fc@gerhold.net
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-07-23 13:47:02 +02:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*/
/dts-v1/;
#include "msm8916-pm8916.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
#include <dt-bindings/pinctrl/qcom,pmic-mpp.h>
#include <dt-bindings/sound/apq8016-lpass.h>
/ {
model = "Qualcomm Technologies, Inc. APQ 8016 SBC";
compatible = "qcom,apq8016-sbc", "qcom,apq8016";
aliases {
serial0 = &blsp1_uart2;
serial1 = &blsp1_uart1;
usid0 = &pm8916_0;
i2c0 = &blsp_i2c2;
i2c1 = &blsp_i2c6;
i2c3 = &blsp_i2c4;
spi0 = &blsp_spi5;
spi1 = &blsp_spi3;
};
chosen {
stdout-path = "serial0";
};
camera_vdddo_1v8: camera-vdddo-1v8 {
compatible = "regulator-fixed";
regulator-name = "camera_vdddo";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
};
camera_vdda_2v8: camera-vdda-2v8 {
compatible = "regulator-fixed";
regulator-name = "camera_vdda";
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
regulator-always-on;
};
camera_vddd_1v5: camera-vddd-1v5 {
compatible = "regulator-fixed";
regulator-name = "camera_vddd";
regulator-min-microvolt = <1500000>;
regulator-max-microvolt = <1500000>;
regulator-always-on;
};
reserved-memory {
ramoops@bff00000 {
compatible = "ramoops";
reg = <0x0 0xbff00000 0x0 0x100000>;
record-size = <0x20000>;
console-size = <0x20000>;
ftrace-size = <0x20000>;
};
};
usb2513 {
compatible = "smsc,usb3503";
reset-gpios = <&pm8916_gpios 3 GPIO_ACTIVE_LOW>;
initial-mode = <1>;
};
usb_id: usb-id {
compatible = "linux,extcon-usb-gpio";
id-gpio = <&msmgpio 121 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&usb_id_default>;
};
hdmi-out {
compatible = "hdmi-connector";
type = "a";
port {
hdmi_con: endpoint {
remote-endpoint = <&adv7533_out>;
};
};
};
gpio-keys {
compatible = "gpio-keys";
#address-cells = <1>;
#size-cells = <0>;
autorepeat;
pinctrl-names = "default";
pinctrl-0 = <&msm_key_volp_n_default>;
button@0 {
label = "Volume Up";
linux,code = <KEY_VOLUMEUP>;
gpios = <&msmgpio 107 GPIO_ACTIVE_LOW>;
};
};
leds {
pinctrl-names = "default";
pinctrl-0 = <&msmgpio_leds>,
<&pm8916_gpios_leds>,
<&pm8916_mpps_leds>;
compatible = "gpio-leds";
led@1 {
label = "apq8016-sbc:green:user1";
gpios = <&msmgpio 21 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "heartbeat";
default-state = "off";
};
led@2 {
label = "apq8016-sbc:green:user2";
gpios = <&msmgpio 120 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "mmc0";
default-state = "off";
};
led@3 {
label = "apq8016-sbc:green:user3";
gpios = <&pm8916_gpios 1 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "mmc1";
default-state = "off";
};
led@4 {
label = "apq8016-sbc:green:user4";
gpios = <&pm8916_gpios 2 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "none";
panic-indicator;
default-state = "off";
};
led@5 {
label = "apq8016-sbc:yellow:wlan";
gpios = <&pm8916_mpps 2 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "phy0tx";
default-state = "off";
};
led@6 {
label = "apq8016-sbc:blue:bt";
gpios = <&pm8916_mpps 3 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "bluetooth-power";
default-state = "off";
};
};
};
&blsp_dma {
status = "okay";
};
&blsp_i2c2 {
/* On Low speed expansion */
status = "okay";
label = "LS-I2C0";
};
&blsp_i2c4 {
/* On High speed expansion */
status = "okay";
label = "HS-I2C2";
adv_bridge: bridge@39 {
status = "okay";
compatible = "adi,adv7533";
reg = <0x39>;
interrupt-parent = <&msmgpio>;
interrupts = <31 IRQ_TYPE_EDGE_FALLING>;
adi,dsi-lanes = <4>;
clocks = <&rpmcc RPM_SMD_BB_CLK2>;
clock-names = "cec";
pd-gpios = <&msmgpio 32 GPIO_ACTIVE_HIGH>;
avdd-supply = <&pm8916_l6>;
v1p2-supply = <&pm8916_l6>;
v3p3-supply = <&pm8916_l17>;
pinctrl-names = "default","sleep";
pinctrl-0 = <&adv7533_int_active &adv7533_switch_active>;
pinctrl-1 = <&adv7533_int_suspend &adv7533_switch_suspend>;
#sound-dai-cells = <1>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
adv7533_in: endpoint {
remote-endpoint = <&dsi0_out>;
};
};
port@1 {
reg = <1>;
adv7533_out: endpoint {
remote-endpoint = <&hdmi_con>;
};
};
};
};
};
&blsp_i2c6 {
/* On Low speed expansion */
status = "okay";
label = "LS-I2C1";
};
&blsp_spi3 {
/* On High speed expansion */
status = "okay";
label = "HS-SPI1";
};
&blsp_spi5 {
/* On Low speed expansion */
status = "okay";
label = "LS-SPI0";
};
&blsp1_uart1 {
status = "okay";
label = "LS-UART0";
};
&blsp1_uart2 {
status = "okay";
label = "LS-UART1";
};
&camss {
status = "okay";
ports {
port@0 {
reg = <0>;
csiphy0_ep: endpoint {
clock-lanes = <1>;
data-lanes = <0 2>;
remote-endpoint = <&ov5640_ep>;
status = "okay";
};
};
};
};
&cci {
status = "okay";
};
&cci_i2c0 {
camera_rear@3b {
compatible = "ovti,ov5640";
reg = <0x3b>;
enable-gpios = <&msmgpio 34 GPIO_ACTIVE_HIGH>;
reset-gpios = <&msmgpio 35 GPIO_ACTIVE_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&camera_rear_default>;
clocks = <&gcc GCC_CAMSS_MCLK0_CLK>;
clock-names = "xclk";
clock-frequency = <23880000>;
vdddo-supply = <&camera_vdddo_1v8>;
vdda-supply = <&camera_vdda_2v8>;
vddd-supply = <&camera_vddd_1v5>;
/* No camera mezzanine by default */
status = "disabled";
port {
ov5640_ep: endpoint {
clock-lanes = <1>;
data-lanes = <0 2>;
remote-endpoint = <&csiphy0_ep>;
};
};
};
};
&dsi0_out {
data-lanes = <0 1 2 3>;
remote-endpoint = <&adv7533_in>;
};
&lpass {
status = "okay";
};
&mdss {
status = "okay";
};
&mpss {
status = "okay";
firmware-name = "qcom/apq8016/mba.mbn", "qcom/apq8016/modem.mbn";
};
&pm8916_resin {
status = "okay";
linux,code = <KEY_VOLUMEDOWN>;
};
&pronto {
status = "okay";
firmware-name = "qcom/apq8016/wcnss.mbn";
};
&sdhc_1 {
status = "okay";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&sdc1_clk_on &sdc1_cmd_on &sdc1_data_on>;
pinctrl-1 = <&sdc1_clk_off &sdc1_cmd_off &sdc1_data_off>;
};
&sdhc_2 {
status = "okay";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&sdc2_clk_on &sdc2_cmd_on &sdc2_data_on &sdc2_cd_on>;
pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
cd-gpios = <&msmgpio 38 GPIO_ACTIVE_LOW>;
};
&sound {
status = "okay";
pinctrl-0 = <&cdc_pdm_lines_act &ext_sec_tlmm_lines_act &ext_mclk_tlmm_lines_act>;
pinctrl-1 = <&cdc_pdm_lines_sus &ext_sec_tlmm_lines_sus &ext_mclk_tlmm_lines_sus>;
pinctrl-names = "default", "sleep";
qcom,model = "DB410c";
qcom,audio-routing =
"AMIC2", "MIC BIAS Internal2",
"AMIC3", "MIC BIAS External1";
external-dai-link@0 {
link-name = "ADV7533";
cpu {
sound-dai = <&lpass MI2S_QUATERNARY>;
};
codec {
sound-dai = <&adv_bridge 0>;
};
};
internal-codec-playback-dai-link@0 {
link-name = "WCD";
cpu {
sound-dai = <&lpass MI2S_PRIMARY>;
};
codec {
sound-dai = <&lpass_codec 0>, <&wcd_codec 0>;
};
};
internal-codec-capture-dai-link@0 {
link-name = "WCD-Capture";
cpu {
sound-dai = <&lpass MI2S_TERTIARY>;
};
codec {
sound-dai = <&lpass_codec 1>, <&wcd_codec 1>;
};
};
};
&usb {
status = "okay";
extcon = <&usb_id>, <&usb_id>;
pinctrl-names = "default", "device";
pinctrl-0 = <&usb_sw_sel_pm &usb_hub_reset_pm>;
pinctrl-1 = <&usb_sw_sel_pm_device &usb_hub_reset_pm_device>;
};
&usb_hs_phy {
extcon = <&usb_id>;
};
&wcd_codec {
clocks = <&gcc GCC_CODEC_DIGCODEC_CLK>;
clock-names = "mclk";
qcom,mbhc-vthreshold-low = <75 150 237 450 500>;
qcom,mbhc-vthreshold-high = <75 150 237 450 500>;
};
&wcnss_ctrl {
firmware-name = "qcom/apq8016/WCNSS_qcom_wlan_nv_sbc.bin";
};
/* Enable CoreSight */
&cti0 { status = "okay"; };
&cti1 { status = "okay"; };
&cti12 { status = "okay"; };
&cti13 { status = "okay"; };
&cti14 { status = "okay"; };
&cti15 { status = "okay"; };
&debug0 { status = "okay"; };
&debug1 { status = "okay"; };
&debug2 { status = "okay"; };
&debug3 { status = "okay"; };
&etf { status = "okay"; };
&etm0 { status = "okay"; };
&etm1 { status = "okay"; };
&etm2 { status = "okay"; };
&etm3 { status = "okay"; };
&etr { status = "okay"; };
&funnel0 { status = "okay"; };
&funnel1 { status = "okay"; };
&replicator { status = "okay"; };
&stm { status = "okay"; };
&tpiu { status = "okay"; };
&smd_rpm_regulators {
vdd_l1_l2_l3-supply = <&pm8916_s3>;
vdd_l4_l5_l6-supply = <&pm8916_s4>;
vdd_l7-supply = <&pm8916_s4>;
s3 {
regulator-min-microvolt = <1250000>;
regulator-max-microvolt = <1350000>;
};
s4 {
regulator-min-microvolt = <1850000>;
regulator-max-microvolt = <2150000>;
regulator-always-on;
regulator-boot-on;
};
l1 {
regulator-min-microvolt = <1225000>;
regulator-max-microvolt = <1225000>;
};
l2 {
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
};
l4 {
regulator-min-microvolt = <2050000>;
regulator-max-microvolt = <2050000>;
};
l5 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
l6 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
l7 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
l8 {
regulator-min-microvolt = <2900000>;
regulator-max-microvolt = <2900000>;
};
l9 {
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
l10 {
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
};
l11 {
regulator-min-microvolt = <2950000>;
regulator-max-microvolt = <2950000>;
regulator-allow-set-load;
regulator-system-load = <200000>;
};
l12 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <2950000>;
};
l13 {
regulator-min-microvolt = <3075000>;
regulator-max-microvolt = <3075000>;
};
l14 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
};
/*
* The 96Boards specification expects a 1.8V power rail on the low-speed
* expansion connector that is able to provide at least 0.18W / 100 mA.
* L15/L16 are connected in parallel to provide 55 mA each. A minimum load
* must be specified to ensure the regulators are not put in LPM where they
* would only provide 5 mA.
*/
l15 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-system-load = <50000>;
regulator-allow-set-load;
regulator-always-on;
};
l16 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-system-load = <50000>;
regulator-allow-set-load;
regulator-always-on;
};
l17 {
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
l18 {
regulator-min-microvolt = <2700000>;
regulator-max-microvolt = <2700000>;
};
};
/*
* 2mA drive strength is not enough when connecting multiple
* I2C devices with different pull up resistors.
*/
&i2c2_default {
drive-strength = <16>;
};
&i2c4_default {
drive-strength = <16>;
};
&i2c6_default {
drive-strength = <16>;
};
/*
* GPIO name legend: proper name = the GPIO line is used as GPIO
* NC = not connected (pin out but not routed from the chip to
* anything the board)
* "[PER]" = pin is muxed for [peripheral] (not GPIO)
* LSEC = Low Speed External Connector
* HSEC = High Speed External Connector
*
* Line names are taken from the schematic "DragonBoard410c"
* dated monday, august 31, 2015. Page 5 in particular.
*
* For the lines routed to the external connectors the
* lines are named after the 96Boards CE Specification 1.0,
* Appendix "Expansion Connector Signal Description".
*
* When the 96Board naming of a line and the schematic name of
* the same line are in conflict, the 96Board specification
* takes precedence, which means that the external UART on the
* LSEC is named UART0 while the schematic and SoC names this
* UART3. This is only for the informational lines i.e. "[FOO]",
* the GPIO named lines "GPIO-A" thru "GPIO-L" are the only
* ones actually used for GPIO.
*/
&msmgpio {
gpio-line-names =
"[UART0_TX]", /* GPIO_0, LSEC pin 5 */
"[UART0_RX]", /* GPIO_1, LSEC pin 7 */
"[UART0_CTS_N]", /* GPIO_2, LSEC pin 3 */
"[UART0_RTS_N]", /* GPIO_3, LSEC pin 9 */
"[UART1_TX]", /* GPIO_4, LSEC pin 11 */
"[UART1_RX]", /* GPIO_5, LSEC pin 13 */
"[I2C0_SDA]", /* GPIO_8, LSEC pin 17 */
"[I2C0_SCL]", /* GPIO_7, LSEC pin 15 */
"[SPI1_DOUT]", /* SPI1_MOSI, HSEC pin 1 */
"[SPI1_DIN]", /* SPI1_MISO, HSEC pin 11 */
"[SPI1_CS]", /* SPI1_CS_N, HSEC pin 7 */
"[SPI1_SCLK]", /* SPI1_CLK, HSEC pin 9 */
"GPIO-B", /* LS_EXP_GPIO_B, LSEC pin 24 */
"GPIO-C", /* LS_EXP_GPIO_C, LSEC pin 25 */
"[I2C3_SDA]", /* HSEC pin 38 */
"[I2C3_SCL]", /* HSEC pin 36 */
"[SPI0_MOSI]", /* LSEC pin 14 */
"[SPI0_MISO]", /* LSEC pin 10 */
"[SPI0_CS_N]", /* LSEC pin 12 */
"[SPI0_CLK]", /* LSEC pin 8 */
"HDMI_HPD_N", /* GPIO 20 */
"USR_LED_1_CTRL",
"[I2C1_SDA]", /* GPIO_22, LSEC pin 21 */
"[I2C1_SCL]", /* GPIO_23, LSEC pin 19 */
"GPIO-G", /* LS_EXP_GPIO_G, LSEC pin 29 */
"GPIO-H", /* LS_EXP_GPIO_H, LSEC pin 30 */
"[CSI0_MCLK]", /* HSEC pin 15 */
"[CSI1_MCLK]", /* HSEC pin 17 */
"GPIO-K", /* LS_EXP_GPIO_K, LSEC pin 33 */
"[I2C2_SDA]", /* HSEC pin 34 */
"[I2C2_SCL]", /* HSEC pin 32 */
"DSI2HDMI_INT_N",
"DSI_SW_SEL_APQ",
"GPIO-L", /* LS_EXP_GPIO_L, LSEC pin 34 */
"GPIO-J", /* LS_EXP_GPIO_J, LSEC pin 32 */
"GPIO-I", /* LS_EXP_GPIO_I, LSEC pin 31 */
"GPIO-A", /* LS_EXP_GPIO_A, LSEC pin 23 */
"FORCED_USB_BOOT",
"SD_CARD_DET_N",
"[WCSS_BT_SSBI]",
"[WCSS_WLAN_DATA_2]", /* GPIO 40 */
"[WCSS_WLAN_DATA_1]",
"[WCSS_WLAN_DATA_0]",
"[WCSS_WLAN_SET]",
"[WCSS_WLAN_CLK]",
"[WCSS_FM_SSBI]",
"[WCSS_FM_SDI]",
"[WCSS_BT_DAT_CTL]",
"[WCSS_BT_DAT_STB]",
"NC",
"NC", /* GPIO 50 */
"NC",
"NC",
"NC",
"NC",
"NC",
"NC",
"NC",
"NC",
"NC",
"NC", /* GPIO 60 */
"NC",
"NC",
"[CDC_PDM0_CLK]",
"[CDC_PDM0_SYNC]",
"[CDC_PDM0_TX0]",
"[CDC_PDM0_RX0]",
"[CDC_PDM0_RX1]",
"[CDC_PDM0_RX2]",
"GPIO-D", /* LS_EXP_GPIO_D, LSEC pin 26 */
"NC", /* GPIO 70 */
"NC",
"NC",
"NC",
"NC", /* GPIO 74 */
"NC",
"NC",
"NC",
"NC",
"NC",
"BOOT_CONFIG_0", /* GPIO 80 */
"BOOT_CONFIG_1",
"BOOT_CONFIG_2",
"BOOT_CONFIG_3",
"NC",
"NC",
"BOOT_CONFIG_5",
"NC",
"NC",
"NC",
"NC", /* GPIO 90 */
"NC",
"NC",
"NC",
"NC",
"NC",
"NC",
"NC",
"NC",
"NC",
"NC", /* GPIO 100 */
"NC",
"NC",
"NC",
"SSBI_GPS",
"NC",
"NC",
"KEY_VOLP_N",
"NC",
"NC",
"[LS_EXP_MI2S_WS]", /* GPIO 110 */
"NC",
"NC",
"[LS_EXP_MI2S_SCK]",
"[LS_EXP_MI2S_DATA0]",
"GPIO-E", /* LS_EXP_GPIO_E, LSEC pin 27 */
"NC",
"[DSI2HDMI_MI2S_WS]",
"[DSI2HDMI_MI2S_SCK]",
"[DSI2HDMI_MI2S_DATA0]",
"USR_LED_2_CTRL", /* GPIO 120 */
"SB_HS_ID";
msmgpio_leds: msmgpio-leds {
pins = "gpio21", "gpio120";
function = "gpio";
output-low;
};
usb_id_default: usb-id-default {
pins = "gpio121";
function = "gpio";
drive-strength = <8>;
input-enable;
bias-pull-up;
};
adv7533_int_active: adv533-int-active {
pins = "gpio31";
function = "gpio";
drive-strength = <16>;
bias-disable;
};
adv7533_int_suspend: adv7533-int-suspend {
pins = "gpio31";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
adv7533_switch_active: adv7533-switch-active {
pins = "gpio32";
function = "gpio";
drive-strength = <16>;
bias-disable;
};
adv7533_switch_suspend: adv7533-switch-suspend {
pins = "gpio32";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
msm_key_volp_n_default: msm-key-volp-n-default {
pins = "gpio107";
function = "gpio";
drive-strength = <8>;
input-enable;
bias-pull-up;
};
};
&pm8916_gpios {
gpio-line-names =
"USR_LED_3_CTRL",
"USR_LED_4_CTRL",
"USB_HUB_RESET_N_PM",
"USB_SW_SEL_PM";
usb_hub_reset_pm: usb-hub-reset-pm {
pins = "gpio3";
function = PMIC_GPIO_FUNC_NORMAL;
input-disable;
output-high;
};
usb_hub_reset_pm_device: usb-hub-reset-pm-device {
pins = "gpio3";
function = PMIC_GPIO_FUNC_NORMAL;
output-low;
};
usb_sw_sel_pm: usb-sw-sel-pm {
pins = "gpio4";
function = PMIC_GPIO_FUNC_NORMAL;
power-source = <PM8916_GPIO_VPH>;
input-disable;
output-high;
};
usb_sw_sel_pm_device: usb-sw-sel-pm-device {
pins = "gpio4";
function = PMIC_GPIO_FUNC_NORMAL;
power-source = <PM8916_GPIO_VPH>;
input-disable;
output-low;
};
pm8916_gpios_leds: pm8916-gpios-leds {
pins = "gpio1", "gpio2";
function = PMIC_GPIO_FUNC_NORMAL;
output-low;
};
};
&pm8916_mpps {
gpio-line-names =
"VDD_PX_BIAS",
"WLAN_LED_CTRL",
"BT_LED_CTRL",
"GPIO-F"; /* LS_EXP_GPIO_F, LSEC pin 28 */
pinctrl-names = "default";
pinctrl-0 = <&ls_exp_gpio_f>;
ls_exp_gpio_f: pm8916-mpp4-state {
pins = "mpp4";
function = "digital";
output-low;
power-source = <PM8916_MPP_L5>; // 1.8V
};
pm8916_mpps_leds: pm8916-mpps-state {
pins = "mpp2", "mpp3";
function = "digital";
output-low;
};
};
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