iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
Stephan Gerhold 5e57e5d0d6 arm64: dts: qcom: msm8916-samsung-a2015: Add NFC 
The Samsung Galaxy A3/A5 both have a Samsung S3FWRN5 NFC chip that
works quite well with the s3fwrn5 driver in the Linux NFC subsystem.

The clock setup for the NFC chip is a bit special (although this
seems to be a common approach used for Qualcomm devices with NFC):

The NFC chip has an output GPIO that is asserted whenever the clock
is needed to function properly. On the A3/A5 this is wired up to
PM8916 GPIO2, which is then configured with a special function
(NFC_CLK_REQ or BB_CLK2_REQ).

Enabling the rpmcc RPM_SMD_BB_CLK2_PIN clock will then instruct
PM8916 to automatically enable the clock whenever the NFC chip
requests it. The advantage is that the clock is only enabled when
needed and we don't need to manage it ourselves from the NFC driver.

Note that for some reason Samsung decided to connect the I2C pins
to GPIOs where no hardware I2C bus is available, so we need to
fall back to software bit-banging with i2c-gpio.

Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210604172742.10593-5-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2021-06-05 23:07:51 -05:00

475 lines
8.5 KiB
Plaintext
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-only
#include "msm8916-pm8916.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
/ {
aliases {
serial0 = &blsp1_uart2;
};
chosen {
stdout-path = "serial0";
};
reserved-memory {
/* Additional memory used by Samsung firmware modifications */
tz-apps@85500000 {
reg = <0x0 0x85500000 0x0 0xb00000>;
no-map;
};
};
gpio-keys {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&gpio_keys_default>;
label = "GPIO Buttons";
volume-up {
label = "Volume Up";
gpios = <&msmgpio 107 GPIO_ACTIVE_LOW>;
linux,code = <KEY_VOLUMEUP>;
};
home {
label = "Home";
gpios = <&msmgpio 109 GPIO_ACTIVE_LOW>;
linux,code = <KEY_HOMEPAGE>;
};
};
gpio-hall-sensor {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&gpio_hall_sensor_default>;
label = "GPIO Hall Effect Sensor";
hall-sensor {
label = "Hall Effect Sensor";
gpios = <&msmgpio 52 GPIO_ACTIVE_LOW>;
linux,input-type = <EV_SW>;
linux,code = <SW_LID>;
linux,can-disable;
};
};
reg_vdd_tsp: regulator-vdd-tsp {
compatible = "regulator-fixed";
regulator-name = "vdd_tsp";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&msmgpio 73 GPIO_ACTIVE_HIGH>;
enable-active-high;
pinctrl-names = "default";
pinctrl-0 = <&tsp_en_default>;
};
i2c-muic {
compatible = "i2c-gpio";
sda-gpios = <&msmgpio 105 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
scl-gpios = <&msmgpio 106 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
pinctrl-names = "default";
pinctrl-0 = <&muic_i2c_default>;
#address-cells = <1>;
#size-cells = <0>;
muic: extcon@25 {
compatible = "siliconmitus,sm5502-muic";
reg = <0x25>;
interrupt-parent = <&msmgpio>;
interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
pinctrl-names = "default";
pinctrl-0 = <&muic_int_default>;
};
};
i2c-tkey {
compatible = "i2c-gpio";
sda-gpios = <&msmgpio 16 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
scl-gpios = <&msmgpio 17 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
pinctrl-names = "default";
pinctrl-0 = <&tkey_i2c_default>;
#address-cells = <1>;
#size-cells = <0>;
touchkey: touchkey@20 {
/* Note: Actually an ABOV MCU that implements same interface */
compatible = "coreriver,tc360-touchkey";
reg = <0x20>;
interrupt-parent = <&msmgpio>;
interrupts = <98 IRQ_TYPE_EDGE_FALLING>;
/* vcc/vdd-supply are board-specific */
vddio-supply = <&pm8916_l6>;
linux,keycodes = <KEY_APPSELECT KEY_BACK>;
pinctrl-names = "default";
pinctrl-0 = <&tkey_default>;
};
};
i2c-nfc {
compatible = "i2c-gpio";
sda-gpios = <&msmgpio 0 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
scl-gpios = <&msmgpio 1 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
pinctrl-names = "default";
pinctrl-0 = <&nfc_i2c_default>;
#address-cells = <1>;
#size-cells = <0>;
nfc@27 {
compatible = "samsung,s3fwrn5-i2c";
reg = <0x27>;
interrupt-parent = <&msmgpio>;
interrupts = <21 IRQ_TYPE_EDGE_RISING>;
en-gpios = <&msmgpio 20 GPIO_ACTIVE_HIGH>;
wake-gpios = <&msmgpio 49 GPIO_ACTIVE_HIGH>;
clocks = <&rpmcc RPM_SMD_BB_CLK2_PIN>;
pinctrl-names = "default";
pinctrl-0 = <&nfc_default &nfc_clk_req>;
};
};
};
&blsp_i2c2 {
status = "okay";
accelerometer: accelerometer@10 {
compatible = "bosch,bmc150_accel";
reg = <0x10>;
interrupt-parent = <&msmgpio>;
interrupts = <115 IRQ_TYPE_EDGE_RISING>;
vdd-supply = <&pm8916_l17>;
vddio-supply = <&pm8916_l5>;
pinctrl-names = "default";
pinctrl-0 = <&accel_int_default>;
};
magnetometer@12 {
compatible = "bosch,bmc150_magn";
reg = <0x12>;
vdd-supply = <&pm8916_l17>;
vddio-supply = <&pm8916_l5>;
};
};
&blsp_i2c4 {
status = "okay";
battery@35 {
compatible = "richtek,rt5033-battery";
reg = <0x35>;
interrupt-parent = <&msmgpio>;
interrupts = <121 IRQ_TYPE_EDGE_BOTH>;
pinctrl-names = "default";
pinctrl-0 = <&fg_alert_default>;
};
};
&blsp1_uart2 {
status = "okay";
};
&dsi0 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&mdss_default>;
pinctrl-1 = <&mdss_sleep>;
};
&mdss {
status = "okay";
};
&pm8916_resin {
status = "okay";
linux,code = <KEY_VOLUMEDOWN>;
};
&pronto {
status = "okay";
};
&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>;
};
&usb {
status = "okay";
extcon = <&muic>, <&muic>;
};
&usb_hs_phy {
extcon = <&muic>;
};
&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 = <1200000>;
regulator-max-microvolt = <1300000>;
};
s4 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <2100000>;
};
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 = <2850000>;
regulator-max-microvolt = <2900000>;
};
l9 {
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
l10 {
regulator-min-microvolt = <2700000>;
regulator-max-microvolt = <2800000>;
};
l11 {
regulator-min-microvolt = <1800000>;
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>;
};
l15 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
};
l16 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
};
l17 {
regulator-min-microvolt = <2850000>;
regulator-max-microvolt = <2850000>;
};
l18 {
regulator-min-microvolt = <2700000>;
regulator-max-microvolt = <2700000>;
};
};
&msmgpio {
accel_int_default: accel-int-default {
pins = "gpio115";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
fg_alert_default: fg-alert-default {
pins = "gpio121";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
gpio_keys_default: gpio-keys-default {
pins = "gpio107", "gpio109";
function = "gpio";
drive-strength = <2>;
bias-pull-up;
};
gpio_hall_sensor_default: gpio-hall-sensor-default {
pins = "gpio52";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
mdss {
mdss_default: mdss-default {
pins = "gpio25";
function = "gpio";
drive-strength = <8>;
bias-disable;
};
mdss_sleep: mdss-sleep {
pins = "gpio25";
function = "gpio";
drive-strength = <2>;
bias-pull-down;
};
};
muic_i2c_default: muic-i2c-default {
pins = "gpio105", "gpio106";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
muic_int_default: muic-int-default {
pins = "gpio12";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
nfc_default: nfc-default {
pins = "gpio20", "gpio49";
function = "gpio";
drive-strength = <2>;
bias-disable;
irq {
pins = "gpio21";
function = "gpio";
drive-strength = <2>;
bias-pull-down;
};
};
nfc_i2c_default: nfc-i2c-default {
pins = "gpio0", "gpio1";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
tkey_default: tkey-default {
pins = "gpio98";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
tkey_i2c_default: tkey-i2c-default {
pins = "gpio16", "gpio17";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
tsp_en_default: tsp-en-default {
pins = "gpio73";
function = "gpio";
drive-strength = <2>;
bias-disable;
};
};
&pm8916_gpios {
nfc_clk_req: nfc-clk-req {
pins = "gpio2";
function = "func1";
input-enable;
bias-disable;
power-source = <PM8916_GPIO_L2>;
};
};
Reference in New Issue View Git Blame Copy Permalink