[PATCH 0/8] arm64: dts: qcom: msm8939-samsung-a7: Add initial dts

[PATCH 0/8] arm64: dts: qcom: msm8939-samsung-a7: Add initial dts

[Lin, Meng-Bo]

This dts adds support for Samsung Galaxy A7 smartphone released in 2015.

Add a device tree for A7 with initial support for:

- GPIO keys
- Hall Sensor
- SDHCI (internal and external storage)
- USB Device Mode
- UART (on USB connector via the SM5502 MUIC)
- WCNSS (WiFi/BT)
- Regulators
- Touch key
- Accelerometer/Magnetometer
- Fuelgauge
- NFC
- Vibrator
- Touchscreen

[PATCH 1/8] dt-bindings: qcom: Document msm8939,a7

[Lin, Meng-Bo]

Document samsung,a7 bindings used in its device tree.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
---
 Documentation/devicetree/bindings/arm/qcom.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/qcom.yaml b/Documentation/devicetree/bindings/arm/qcom.yaml
index 450f616774e0..a6f7ef4f0830 100644
--- a/Documentation/devicetree/bindings/arm/qcom.yaml
+++ b/Documentation/devicetree/bindings/arm/qcom.yaml
@@ -186,6 +186,7 @@ properties:
 
       - items:
           - enum:
+              - samsung,a7
               - sony,kanuti-tulip
               - square,apq8039-t2
           - const: qcom,msm8939
-- 
2.39.2

[PATCH 2/8] arm64: dts: qcom: msm8939-samsung-a7: Add initial dts

[Lin, Meng-Bo]

This dts adds support for Samsung Galaxy A7 smartphone released in 2015.

Add a device tree for A7 with initial support for:

- GPIO keys
- Hall Sensor
- SDHCI (internal and external storage)
- USB Device Mode
- UART (on USB connector via the SM5502 MUIC)
- WCNSS (WiFi/BT)
- Regulators

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
---
 arch/arm64/boot/dts/qcom/Makefile             |   1 +
 .../boot/dts/qcom/msm8939-samsung-a7.dts      | 163 ++++++++++++++++++
 2 files changed, 164 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 337abc4ceb17..23fd31d4bf5a 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -39,6 +39,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-thwc-uf896.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-thwc-ufi001c.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-wingtech-wt88047.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-yiming-uz801v3.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= msm8939-samsung-a7.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8939-sony-xperia-kanuti-tulip.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8953-motorola-potter.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8953-xiaomi-daisy.dtb
diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
new file mode 100644
index 000000000000..cf2738bc3313
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/dts-v1/;
+
+#include "msm8939-pm8916.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+	model = "Samsung Galaxy A7 (2015)";
+	compatible = "samsung,a7", "qcom,msm8939";
+	chassis-type = "handset";
+
+	aliases {
+		mmc0 = &sdhc_1; /* SDC1 eMMC slot */
+		mmc1 = &sdhc_2; /* SDC2 SD card slot */
+		serial0 = &blsp_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-hall-sensor {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&gpio_hall_sensor_default>;
+		pinctrl-names = "default";
+
+		label = "GPIO Hall Effect Sensor";
+
+		event-hall-sensor {
+			label = "Hall Effect Sensor";
+			gpios = <&tlmm 52 GPIO_ACTIVE_LOW>;
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_LID>;
+			linux,can-disable;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&gpio_keys_default>;
+		pinctrl-names = "default";
+
+		label = "GPIO Buttons";
+
+		button-volume-up {
+			label = "Volume Up";
+			gpios = <&tlmm 107 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEUP>;
+		};
+
+		button-home {
+			label = "Home";
+			gpios = <&tlmm 109 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_HOMEPAGE>;
+		};
+	};
+};
+
+&blsp_i2c1 {
+	status = "okay";
+
+	muic: extcon@25 {
+		compatible = "siliconmitus,sm5502-muic";
+		reg = <0x25>;
+
+		interrupt-parent = <&tlmm>;
+		interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
+
+		pinctrl-0 = <&muic_int_default>;
+		pinctrl-names = "default";
+	};
+};
+
+&blsp_uart2 {
+	status = "okay";
+};
+
+&pm8916_resin {
+	linux,code = <KEY_VOLUMEDOWN>;
+	status = "okay";
+};
+
+&pm8916_rpm_regulators {
+	pm8916_l17: l17 {
+		regulator-min-microvolt = <2850000>;
+		regulator-max-microvolt = <2850000>;
+	};
+};
+
+&sdhc_1 {
+	status = "okay";
+};
+
+&sdhc_2 {
+	pinctrl-0 = <&sdc2_default &sdc2_cd_default>;
+	pinctrl-1 = <&sdc2_sleep &sdc2_cd_default>;
+	pinctrl-names = "default", "sleep";
+
+	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
+
+	status = "okay";
+};
+
+&usb {
+	extcon = <&muic>, <&muic>;
+	status = "okay";
+};
+
+&usb_hs_phy {
+	extcon = <&muic>;
+};
+
+&wcnss {
+	status = "okay";
+};
+
+&wcnss_iris {
+	compatible = "qcom,wcn3660b";
+};
+
+&tlmm {
+	gpio_hall_sensor_default: gpio-hall-sensor-default-state {
+		pins = "gpio52";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	gpio_keys_default: gpio-keys-default-state {
+		pins = "gpio107", "gpio109";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+
+	muic_int_default: muic-int-default-state {
+		pins = "gpio12";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	sdc2_cd_default: sdc2-cd-default-state {
+		pins = "gpio38";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+};
-- 
2.39.2

[PATCH 3/8] arm64: dts: qcom: msm8939-samsung-a7: Add touch key

[Lin, Meng-Bo]

Add the CORERIVER TC360 touch key together with the necessary
fixed regulator for it.

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

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
---
 .../boot/dts/qcom/msm8939-samsung-a7.dts      | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
index cf2738bc3313..98a2738eb8ea 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -68,6 +68,63 @@ button-home {
 			linux,code = <KEY_HOMEPAGE>;
 		};
 	};
+
+	i2c-tkey {
+		compatible = "i2c-gpio";
+		sda-gpios = <&tlmm 16 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&tlmm 17 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+		pinctrl-0 = <&tkey_i2c_default>;
+		pinctrl-names = "default";
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		touchkey@20 {
+			/* Note: Actually an ABOV MCU that implements same interface */
+			compatible = "coreriver,tc360-touchkey";
+			reg = <0x20>;
+
+			interrupt-parent = <&tlmm>;
+			interrupts = <20 IRQ_TYPE_EDGE_FALLING>;
+
+			vcc-supply = <&reg_touch_key>;
+			vdd-supply = <&reg_keyled>;
+			vddio-supply = <&pm8916_l6>;
+
+			linux,keycodes = <KEY_APPSELECT KEY_BACK>;
+
+			pinctrl-0 = <&tkey_default>;
+			pinctrl-names = "default";
+		};
+	};
+
+	reg_keyled: regulator-keyled {
+		compatible = "regulator-fixed";
+		regulator-name = "keyled";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		/* NOTE: On some variants e.g. SM-A700FD it's GPIO 91 */
+		gpio = <&tlmm 100 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&tkey_led_en_default>;
+		pinctrl-names = "default";
+	};
+
+	reg_touch_key: regulator-touch-key {
+		compatible = "regulator-fixed";
+		regulator-name = "touch_key";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+
+		gpio = <&tlmm 56 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&tkey_en_default>;
+		pinctrl-names = "default";
+	};
 };
 
 &blsp_i2c1 {
@@ -160,4 +217,32 @@ sdc2_cd_default: sdc2-cd-default-state {
 		drive-strength = <2>;
 		bias-pull-up;
 	};
+
+	tkey_default: tkey-default-state {
+		pins = "gpio20";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	tkey_en_default: tkey-en-default-state {
+		pins = "gpio56";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	tkey_i2c_default: tkey-i2c-default-state {
+		pins = "gpio16", "gpio17";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	tkey_led_en_default: tkey-led-en-default-state {
+		pins = "gpio100";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
 };
-- 
2.39.2

[PATCH 4/8] arm64: dts: qcom: msm8939-samsung-a7: Add accelerometer/magnetometer

[Lin, Meng-Bo]

A7 uses a Bosch BMC150 accelerometer/magnetometer combo.
The chip provides two separate I2C devices for the accelerometer
and magnetometer that are already supported by the bmc150-accel
and bmc150-magn driver.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
---
 .../boot/dts/qcom/msm8939-samsung-a7.dts      | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
index 98a2738eb8ea..6a817038a3b9 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -69,6 +69,43 @@ button-home {
 		};
 	};
 
+	i2c-sensor {
+		compatible = "i2c-gpio";
+		sda-gpios = <&tlmm 84 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&tlmm 85 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+		pinctrl-0 = <&sensor_i2c_default>;
+		pinctrl-names = "default";
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		accelerometer: accelerometer@10 {
+			compatible = "bosch,bmc150_accel";
+			reg = <0x10>;
+			interrupt-parent = <&tlmm>;
+			interrupts = <115 IRQ_TYPE_EDGE_RISING>;
+
+			vdd-supply = <&pm8916_l17>;
+			vddio-supply = <&pm8916_l5>;
+
+			pinctrl-0 = <&accel_int_default>;
+			pinctrl-names = "default";
+
+			mount-matrix = "-1", "0", "0",
+					"0", "-1", "0",
+					"0", "0", "1";
+		};
+
+		magnetometer@12 {
+			compatible = "bosch,bmc150_magn";
+			reg = <0x12>;
+
+			vdd-supply = <&pm8916_l17>;
+			vddio-supply = <&pm8916_l5>;
+		};
+	};
+
 	i2c-tkey {
 		compatible = "i2c-gpio";
 		sda-gpios = <&tlmm 16 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
@@ -190,6 +227,13 @@ &wcnss_iris {
 };
 
 &tlmm {
+	accel_int_default: accel-int-default-state {
+		pins = "gpio115";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	gpio_hall_sensor_default: gpio-hall-sensor-default-state {
 		pins = "gpio52";
 		function = "gpio";
@@ -218,6 +262,13 @@ sdc2_cd_default: sdc2-cd-default-state {
 		bias-pull-up;
 	};
 
+	sensor_i2c_default: sensor-i2c-default-state {
+		pins = "gpio84", "gpio85";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	tkey_default: tkey-default-state {
 		pins = "gpio20";
 		function = "gpio";
-- 
2.39.2

[PATCH 5/8] arm64: dts: qcom: msm8939-samsung-a7: Add rt5033 battery

[Lin, Meng-Bo]

The Samsung Galaxy A7 uses a Richtek RT5033 PMIC as battery
fuel gauge, charger, flash LED and for some regulators. For now,
only add the fuel gauge/battery device to the device tree,
so we can check the remaining battery percentage.

The other RT5033 drivers need some more work first before
they can be used properly.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
---
 .../boot/dts/qcom/msm8939-samsung-a7.dts      | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
index 6a817038a3b9..271dcea6da94 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -69,6 +69,29 @@ button-home {
 		};
 	};
 
+	i2c-fg {
+		compatible = "i2c-gpio";
+		sda-gpios = <&tlmm 106 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&tlmm 105 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+		pinctrl-0 = <&fg_i2c_default>;
+		pinctrl-names = "default";
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		battery@35 {
+			compatible = "richtek,rt5033-battery";
+			reg = <0x35>;
+
+			interrupt-parent = <&tlmm>;
+			interrupts = <121 IRQ_TYPE_EDGE_BOTH>;
+
+			pinctrl-0 = <&fg_alert_default>;
+			pinctrl-names = "default";
+		};
+	};
+
 	i2c-sensor {
 		compatible = "i2c-gpio";
 		sda-gpios = <&tlmm 84 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
@@ -234,6 +257,20 @@ accel_int_default: accel-int-default-state {
 		bias-disable;
 	};
 
+	fg_alert_default: fg-alert-default-state {
+		pins = "gpio121";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	fg_i2c_default: fg-i2c-default-state {
+		pins = "gpio105", "gpio106";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	gpio_hall_sensor_default: gpio-hall-sensor-default-state {
 		pins = "gpio52";
 		function = "gpio";
-- 
2.39.2

[PATCH 6/8] arm64: dts: qcom: msm8939-samsung-a7: Add NFC

[Lin, Meng-Bo]

The Galaxy A7 has a NXP PN547, which is supported
by the nxp-nci-i2c driver in mainline. It seems to detect NFC tags
using "nfctool" just fine, although more testing is difficult given
there seem to be very few useful applications making use of the
Linux NFC subsystem.

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.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
---
 .../boot/dts/qcom/msm8939-samsung-a7.dts      | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
index 271dcea6da94..dcbc8a97ce63 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -92,6 +92,32 @@ battery@35 {
 		};
 	};
 
+	i2c-nfc {
+		compatible = "i2c-gpio";
+		sda-gpios = <&tlmm 0 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&tlmm 1 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+		pinctrl-0 = <&nfc_i2c_default>;
+		pinctrl-names = "default";
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		nfc@2b {
+			compatible = "nxp,pn547", "nxp,nxp-nci-i2c";
+			reg = <0x2b>;
+
+			interrupt-parent = <&tlmm>;
+			interrupts = <21 IRQ_TYPE_EDGE_RISING>;
+
+			enable-gpios = <&tlmm 116 GPIO_ACTIVE_HIGH>;
+			firmware-gpios = <&tlmm 49 GPIO_ACTIVE_HIGH>;
+
+			pinctrl-0 = <&nfc_default>;
+			pinctrl-names = "default";
+		};
+	};
+
 	i2c-sensor {
 		compatible = "i2c-gpio";
 		sda-gpios = <&tlmm 84 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
@@ -292,6 +318,29 @@ muic_int_default: muic-int-default-state {
 		bias-disable;
 	};
 
+	nfc_default: nfc-default-state {
+		irq-pins {
+			pins = "gpio21";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-down;
+		};
+
+		nfc-pins {
+			pins = "gpio49", "gpio116";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
+
+	nfc_i2c_default: nfc-i2c-default-state {
+		pins = "gpio0", "gpio1";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	sdc2_cd_default: sdc2-cd-default-state {
 		pins = "gpio38";
 		function = "gpio";
-- 
2.39.2

[PATCH 7/8] arm64: dts: qcom: msm8939-samsung-a7: Add vibrator

[Lin, Meng-Bo]

A7 uses motor driver controlled with PWM signal with a fixed regulator
that powers the driver and is controlled by enable signal.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
---
 .../boot/dts/qcom/msm8939-samsung-a7.dts      | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
index dcbc8a97ce63..ea74b61782de 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -185,6 +185,16 @@ touchkey@20 {
 		};
 	};
 
+	pwm_vibrator: pwm-vibrator {
+		compatible = "clk-pwm";
+		#pwm-cells = <2>;
+
+		clocks = <&gcc GCC_GP2_CLK>;
+
+		pinctrl-0 = <&motor_pwm_default>;
+		pinctrl-names = "default";
+	};
+
 	reg_keyled: regulator-keyled {
 		compatible = "regulator-fixed";
 		regulator-name = "keyled";
@@ -211,6 +221,28 @@ reg_touch_key: regulator-touch-key {
 		pinctrl-0 = <&tkey_en_default>;
 		pinctrl-names = "default";
 	};
+
+	reg_vibrator: regulator-vibrator {
+		compatible = "regulator-fixed";
+		regulator-name = "motor_en";
+		regulator-min-microvolt = <3000000>;
+		regulator-max-microvolt = <3000000>;
+
+		gpio = <&tlmm 86 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&motor_en_default>;
+		pinctrl-names = "default";
+	};
+
+	vibrator {
+		compatible = "pwm-vibrator";
+
+		pwms = <&pwm_vibrator 0 100000>;
+		pwm-names = "enable";
+
+		vcc-supply = <&reg_vibrator>;
+	};
 };
 
 &blsp_i2c1 {
@@ -311,6 +343,18 @@ gpio_keys_default: gpio-keys-default-state {
 		bias-pull-up;
 	};
 
+	motor_en_default: motor-en-default-state {
+		pins = "gpio86";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	motor_pwm_default: motor-pwm-default-state {
+		pins = "gpio50";
+		function = "gcc_gp2_clk_a";
+	};
+
 	muic_int_default: muic-int-default-state {
 		pins = "gpio12";
 		function = "gpio";
-- 
2.39.2

[PATCH 8/8] arm64: dts: qcom: msm8939-samsung-a7: Add touchscreen

[Lin, Meng-Bo]

A7 uses a Cypress TrueTouch Generation 5 that is connected to blsp_i2c5.
Add it to the device tree.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
---
 .../boot/dts/qcom/msm8939-samsung-a7.dts      | 66 +++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
index ea74b61782de..66e56ac59998 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -222,6 +222,33 @@ reg_touch_key: regulator-touch-key {
 		pinctrl-names = "default";
 	};
 
+	reg_tsp_vdd: regulator-tsp-vdd {
+		compatible = "regulator-fixed";
+		regulator-name = "tsp_vdd";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&pm8916_s4>;
+
+		gpio = <&tlmm 8 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&reg_tsp_io_en_default>;
+		pinctrl-names = "default";
+	};
+
+	reg_vdd_tsp: regulator-vdd-tsp {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_tsp";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 73 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-0 = <&reg_tsp_en_default>;
+		pinctrl-names = "default";
+	};
+
 	reg_vibrator: regulator-vibrator {
 		compatible = "regulator-fixed";
 		regulator-name = "motor_en";
@@ -260,6 +287,24 @@ muic: extcon@25 {
 	};
 };
 
+&blsp_i2c5 {
+	status = "okay";
+
+	touchscreen@24 {
+		compatible = "cypress,tt21000";
+
+		reg = <0x24>;
+		interrupt-parent = <&tlmm>;
+		interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+		vdd-supply = <&reg_vdd_tsp>;
+		vddio-supply = <&reg_tsp_vdd>;
+
+		pinctrl-0 = <&tsp_int_default>;
+		pinctrl-names = "default";
+	};
+};
+
 &blsp_uart2 {
 	status = "okay";
 };
@@ -385,6 +430,20 @@ nfc_i2c_default: nfc-i2c-default-state {
 		bias-disable;
 	};
 
+	reg_tsp_en_default: reg-tsp-en-default-state {
+		pins = "gpio73";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	reg_tsp_io_en_default: reg-tsp-io-en-default-state {
+		pins = "gpio8";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	sdc2_cd_default: sdc2-cd-default-state {
 		pins = "gpio38";
 		function = "gpio";
@@ -426,4 +485,11 @@ tkey_led_en_default: tkey-led-en-default-state {
 		drive-strength = <2>;
 		bias-disable;
 	};
+
+	tsp_int_default: tsp-int-default-state {
+		pins = "gpio13";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
 };
-- 
2.39.2

Re: [PATCH 1/8] dt-bindings: qcom: Document msm8939,a7

[Rob Herring]

On Thu, 22 Jun 2023 02:04:30 +0000, Lin, Meng-Bo wrote:
> Document samsung,a7 bindings used in its device tree.
> 
> Signed-off-by: Lin, Meng-Bo <linmengbo0689@protonmail.com>
> ---
>  Documentation/devicetree/bindings/arm/qcom.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH 3/8] arm64: dts: qcom: msm8939-samsung-a7: Add touch key

[Krzysztof Kozlowski]

On 22/06/2023 04:04, Lin, Meng-Bo wrote:
> Add the CORERIVER TC360 touch key together with the necessary
> fixed regulator for it.
> 
> Note that for some reason Samsung decided to connect this to GPIOs
> where no hardware I2C bus is available, so we need to fall back
> to software bit-banging using i2c-gpio.

Squash patches doing one logical change. That change is: adding new
board. Since you sent it as one patchset, then one commit is to add new
DTS. There is no point in sending piece of board and immediately another
piece. It's not release early, release often.

Best regards,
Krzysztof

[PATCH v2 0/2] arm64: dts: qcom: msm8939-samsung-a7: Add initial dts

[Lin, Meng-Bo]

v2: Squash patches

This dts adds support for Samsung Galaxy A7 smartphone released in 2015.

Add a device tree for A7 with initial support for:

- GPIO keys
- Hall Sensor
- SDHCI (internal and external storage)
- USB Device Mode
- UART (on USB connector via the SM5502 MUIC)
- WCNSS (WiFi/BT)
- Regulators
- Touch key
- Accelerometer/Magnetometer
- Fuelgauge
- NFC
- Vibrator
- Touchscreen