[PATCH v3 0/3] Initial Samsung Galaxy Tab 4 10.1 (SM-T530) support

[PATCH v3 0/3] Initial Samsung Galaxy Tab 4 10.1 (SM-T530) support

[Matti Lehtimäki]

Add device tree node for pm8226 GPIOs and support for the Samsung Galaxy
Tab 4 10.1 (SM-T530) tablet which is based on apq8026.

Changes in v3:
  - Fix sdhc_2 bus width
  - Reorder includes

Changes in v2:
  - Change codename to matisse-wifi
  - Remove msm-id from device dts
  - Rename pm8226 gpio node

Matti Lehtimäki (3):
  ARM: dts: qcom: pm8226: Add node for the GPIOs
  dt-bindings: arm: qcom: Document samsung,matisse-wifi device
  ARM: dts: qcom: Add support for Samsung Galaxy Tab 4 10.1 (SM-T530)

 .../devicetree/bindings/arm/qcom.yaml         |   1 +
 arch/arm/boot/dts/Makefile                    |   1 +
 .../dts/qcom-apq8026-samsung-matisse-wifi.dts | 469 ++++++++++++++++++
 arch/arm/boot/dts/qcom-pm8226.dtsi            |  10 +
 4 files changed, 481 insertions(+)
 create mode 100644 arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts

-- 
2.34.1

[PATCH v3 1/3] ARM: dts: qcom: pm8226: Add node for the GPIOs

[Matti Lehtimäki]

The PM8226 provides 8 GPIOs. Add a node to support them.

Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
---
(no changes since v2)

Changes in v2:
  - Rename pm8226 gpio node
---
 arch/arm/boot/dts/qcom-pm8226.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-pm8226.dtsi b/arch/arm/boot/dts/qcom-pm8226.dtsi
index 9b7d9d04ded6..0c10fa16a0f3 100644
--- a/arch/arm/boot/dts/qcom-pm8226.dtsi
+++ b/arch/arm/boot/dts/qcom-pm8226.dtsi
@@ -90,6 +90,16 @@ pm8226_mpps: mpps@a000 {
 			interrupt-controller;
 			#interrupt-cells = <2>;
 		};
+
+		pm8226_gpios: gpio@c000 {
+			compatible = "qcom,pm8226-gpio", "qcom,spmi-gpio";
+			reg = <0xc000>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&pm8226_gpios 0 0 8>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
 	};
 
 	pm8226_1: pm8226@1 {
-- 
2.34.1

Re: [PATCH v3 1/3] ARM: dts: qcom: pm8226: Add node for the GPIOs

[Dmitry Baryshkov]

On Sun, 24 Jul 2022 at 20:25, Matti Lehtimäki <matti.lehtimaki@gmail.com> wrote:
>
> The PM8226 provides 8 GPIOs. Add a node to support them.
>
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

> ---
> (no changes since v2)


-- 
With best wishes
Dmitry

Re: [PATCH v3 1/3] ARM: dts: qcom: pm8226: Add node for the GPIOs

[Krzysztof Kozlowski]

On 24/07/2022 19:24, Matti Lehtimäki wrote:
> The PM8226 provides 8 GPIOs. Add a node to support them.
> 
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> ---
> (no changes since v2)


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>


Best regards,
Krzysztof

[PATCH v3 2/3] dt-bindings: arm: qcom: Document samsung,matisse-wifi device

[Matti Lehtimäki]

Add binding documentation for Samsung Galaxy Tab 4 10.1 (2014) wifi
tablet which is based on Snapdragon 400 (apq8026) SoC.

Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
(no changes since v2)

Changes in v2:
  - Change codename to matisse-wifi
---
 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 5c06d1bfc046..5b5b0e0ee8e7 100644
--- a/Documentation/devicetree/bindings/arm/qcom.yaml
+++ b/Documentation/devicetree/bindings/arm/qcom.yaml
@@ -104,6 +104,7 @@ properties:
           - enum:
               - asus,sparrow
               - lg,lenok
+              - samsung,matisse-wifi
           - const: qcom,apq8026
 
       - items:
-- 
2.34.1

[PATCH v3 3/3] ARM: dts: qcom: Add support for Samsung Galaxy Tab 4 10.1 (SM-T530)

[Matti Lehtimäki]

Add a device tree for the Samsung Galaxy Tab 4 10.1 (SM-T530) wifi tablet
based on the apq8026 platform.

Currently supported are accelerometer sensor, hall sensor,
internal storage, physical buttons (power & volume), screen
(based on simple-framebuffer set up by the bootloader), sdcard,
touchscreen and USB.

Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
---
Changes in v3:
  - Fix sdhc_2 bus width
  - Reorder includes

Changes in v2:
  - Change codename to matisse-wifi
  - Remove msm-id, not needed when lk2nd is used
  - Remove unused labels from reserved memory regions
  - Rename muic node
---
 arch/arm/boot/dts/Makefile                    |   1 +
 .../dts/qcom-apq8026-samsung-matisse-wifi.dts | 469 ++++++++++++++++++
 2 files changed, 470 insertions(+)
 create mode 100644 arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 5112f493f494..8bac4f4f8656 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1010,6 +1010,7 @@ dtb-$(CONFIG_ARCH_QCOM) += \
 	qcom-apq8016-sbc.dtb \
 	qcom-apq8026-asus-sparrow.dtb \
 	qcom-apq8026-lg-lenok.dtb \
+	qcom-apq8026-samsung-matisse-wifi.dtb \
 	qcom-apq8060-dragonboard.dtb \
 	qcom-apq8064-cm-qs600.dtb \
 	qcom-apq8064-ifc6410.dtb \
diff --git a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
new file mode 100644
index 000000000000..78a119107069
--- /dev/null
+++ b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
@@ -0,0 +1,469 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) 2022, Matti Lehtimäki <matti.lehtimaki@gmail.com>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include "qcom-msm8226.dtsi"
+#include "qcom-pm8226.dtsi"
+
+/delete-node/ &smem_region;
+
+/ {
+	model = "Samsung Galaxy Tab 4 10.1";
+	compatible = "samsung,matisse-wifi", "qcom,apq8026";
+	chassis-type = "tablet";
+
+	aliases {
+		mmc0 = &sdhc_1; /* SDC1 eMMC slot */
+		mmc1 = &sdhc_2; /* SDC2 SD card slot */
+		display0 = &framebuffer0;
+	};
+
+	chosen {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		stdout-path = "display0";
+
+		framebuffer0: framebuffer@3200000 {
+			compatible = "simple-framebuffer";
+			reg = <0x3200000 0x800000>;
+			width = <1280>;
+			height = <800>;
+			stride = <(1280 * 3)>;
+			format = "r8g8b8";
+		};
+	};
+
+	gpio-hall-sensor {
+		compatible = "gpio-keys";
+
+		event-hall-sensor {
+			label = "Hall Effect Sensor";
+			gpios = <&tlmm 110 GPIO_ACTIVE_HIGH>;
+			interrupts = <&tlmm 110 IRQ_TYPE_EDGE_FALLING>;
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_LID>;
+			debounce-interval = <15>;
+			wakeup-source;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		autorepeat;
+
+		key-home {
+			label = "Home";
+			gpios = <&tlmm 108 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_HOMEPAGE>;
+			debounce-interval = <15>;
+		};
+
+		key-volume-down {
+			label = "Volume Down";
+			gpios = <&tlmm 107 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEDOWN>;
+			debounce-interval = <15>;
+		};
+
+		key-volume-up {
+			label = "Volume Up";
+			gpios = <&tlmm 106 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_VOLUMEUP>;
+			debounce-interval = <15>;
+		};
+	};
+
+	i2c-muic {
+		compatible = "i2c-gpio";
+		sda-gpios = <&tlmm 14 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&tlmm 15 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&muic_i2c_default_state>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		muic: usb-switch@25 {
+			compatible = "siliconmitus,sm5502-muic";
+			reg = <0x25>;
+
+			interrupt-parent = <&tlmm>;
+			interrupts = <67 IRQ_TYPE_EDGE_FALLING>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&muic_int_default_state>;
+		};
+	};
+
+	reg_tsp_1p8v: regulator-tsp-1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "tsp_1p8v";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+
+		gpio = <&tlmm 31 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&tsp_en_default_state>;
+	};
+
+	reg_tsp_3p3v: regulator-tsp-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "tsp_3p3v";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+
+		gpio = <&tlmm 73 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&tsp_en1_default_state>;
+	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		framebuffer@3200000 {
+			reg = <0x3200000 0x800000>;
+			no-map;
+		};
+
+		mpss@8400000 {
+			reg = <0x08400000 0x1f00000>;
+			no-map;
+		};
+
+		mba@a300000 {
+			reg = <0x0a300000 0x100000>;
+			no-map;
+		};
+
+		reserved@cb00000 {
+			reg = <0x0cb00000 0x700000>;
+			no-map;
+		};
+
+		wcnss@d200000 {
+			reg = <0x0d200000 0x700000>;
+			no-map;
+		};
+
+		adsp@d900000 {
+			reg = <0x0d900000 0x1800000>;
+			no-map;
+		};
+
+		venus@f100000 {
+			reg = <0x0f100000 0x500000>;
+			no-map;
+		};
+
+		smem_region: smem@fa00000 {
+			reg = <0xfa00000 0x100000>;
+			no-map;
+		};
+
+		reserved@fb00000 {
+			reg = <0x0fb00000 0x260000>;
+			no-map;
+		};
+
+		rfsa@fd60000 {
+			reg = <0x0fd60000 0x20000>;
+			no-map;
+		};
+
+		rmtfs@fd80000 {
+			compatible = "qcom,rmtfs-mem";
+			reg = <0x0fd80000 0x180000>;
+			no-map;
+
+			qcom,client-id = <1>;
+		};
+	};
+};
+
+&blsp1_i2c2 {
+	status = "okay";
+
+	accelerometer@1d {
+		compatible = "st,lis2hh12";
+		reg = <0x1d>;
+
+		interrupt-parent = <&tlmm>;
+		interrupts = <54 IRQ_TYPE_LEVEL_HIGH>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&accel_int_default_state>;
+
+		st,drdy-int-pin = <1>;
+
+		vdd-supply = <&pm8226_l19>;
+		vddio-supply = <&pm8226_lvs1>;
+	};
+};
+
+&blsp1_i2c5 {
+	status = "okay";
+
+	touchscreen@4a {
+		compatible = "atmel,maxtouch";
+		reg = <0x4a>;
+
+		interrupt-parent = <&tlmm>;
+		interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&tsp_int_rst_default_state>;
+
+		reset-gpios = <&pm8226_gpios 6 GPIO_ACTIVE_LOW>;
+
+		vdd-supply = <&reg_tsp_1p8v>;
+		vdda-supply = <&reg_tsp_3p3v>;
+	};
+};
+
+&rpm_requests {
+	pm8226-regulators {
+		compatible = "qcom,rpm-pm8226-regulators";
+
+		pm8226_s3: s3 {
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1300000>;
+		};
+
+		pm8226_s4: s4 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+		};
+
+		pm8226_s5: s5 {
+			regulator-min-microvolt = <1150000>;
+			regulator-max-microvolt = <1150000>;
+		};
+
+		pm8226_l1: l1 {
+			regulator-min-microvolt = <1225000>;
+			regulator-max-microvolt = <1225000>;
+		};
+
+		pm8226_l2: l2 {
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1200000>;
+		};
+
+		pm8226_l3: l3 {
+			regulator-min-microvolt = <750000>;
+			regulator-max-microvolt = <1337500>;
+			regulator-always-on;
+		};
+
+		pm8226_l4: l4 {
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1200000>;
+		};
+
+		pm8226_l5: l5 {
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1200000>;
+		};
+
+		pm8226_l6: l6 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-always-on;
+		};
+
+		pm8226_l7: l7 {
+			regulator-min-microvolt = <1850000>;
+			regulator-max-microvolt = <1850000>;
+		};
+
+		pm8226_l8: l8 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-always-on;
+		};
+
+		pm8226_l9: l9 {
+			regulator-min-microvolt = <2050000>;
+			regulator-max-microvolt = <2050000>;
+		};
+
+		pm8226_l10: l10 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+		};
+
+		pm8226_l12: l12 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+		};
+
+		pm8226_l14: l14 {
+			regulator-min-microvolt = <2750000>;
+			regulator-max-microvolt = <2750000>;
+		};
+
+		pm8226_l15: l15 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <3300000>;
+		};
+
+		pm8226_l16: l16 {
+			regulator-min-microvolt = <3000000>;
+			regulator-max-microvolt = <3350000>;
+		};
+
+		pm8226_l17: l17 {
+			regulator-min-microvolt = <2950000>;
+			regulator-max-microvolt = <2950000>;
+
+			regulator-system-load = <200000>;
+			regulator-allow-set-load;
+			regulator-always-on;
+		};
+
+		pm8226_l18: l18 {
+			regulator-min-microvolt = <2950000>;
+			regulator-max-microvolt = <2950000>;
+		};
+
+		pm8226_l19: l19 {
+			regulator-min-microvolt = <2850000>;
+			regulator-max-microvolt = <3000000>;
+		};
+
+		pm8226_l20: l20 {
+			regulator-min-microvolt = <3075000>;
+			regulator-max-microvolt = <3075000>;
+		};
+
+		pm8226_l21: l21 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <2950000>;
+		};
+
+		pm8226_l22: l22 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <3000000>;
+		};
+
+		pm8226_l23: l23 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <3300000>;
+		};
+
+		pm8226_l24: l24 {
+			regulator-min-microvolt = <1300000>;
+			regulator-max-microvolt = <1350000>;
+		};
+
+		pm8226_l25: l25 {
+			regulator-min-microvolt = <1775000>;
+			regulator-max-microvolt = <2125000>;
+		};
+
+		pm8226_l26: l26 {
+			regulator-min-microvolt = <1225000>;
+			regulator-max-microvolt = <1300000>;
+		};
+
+		pm8226_l27: l27 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+		};
+
+		pm8226_l28: l28 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <2950000>;
+		};
+
+		pm8226_lvs1: lvs1 {};
+	};
+};
+
+&sdhc_1 {
+	status = "okay";
+
+	vmmc-supply = <&pm8226_l17>;
+	vqmmc-supply = <&pm8226_l6>;
+
+	bus-width = <8>;
+	non-removable;
+};
+
+&sdhc_2 {
+	status = "okay";
+
+	vmmc-supply = <&pm8226_l18>;
+	vqmmc-supply = <&pm8226_l21>;
+
+	bus-width = <4>;
+	cd-gpios = <&tlmm 38 GPIO_ACTIVE_LOW>;
+};
+
+&tlmm {
+	accel_int_default_state: accel-int-default-state {
+		pins = "gpio54";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	muic_i2c_default_state: muic-i2c-default-state {
+		pins = "gpio14", "gpio15";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	muic_int_default_state: muic-int-default-state {
+		pins = "gpio67";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	tsp_en_default_state: tsp-en-default-state {
+		pins = "gpio31";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	tsp_en1_default_state: tsp-en1-default-state {
+		pins = "gpio73";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	tsp_int_rst_default_state: tsp-int-rst-default-state {
+		pins = "gpio17";
+		function = "gpio";
+		drive-strength = <10>;
+		bias-pull-up;
+	};
+};
+
+&usb {
+	status = "okay";
+	extcon = <&muic>, <&muic>;
+};
+
+&usb_hs_phy {
+	extcon = <&muic>;
+	v1p8-supply = <&pm8226_l10>;
+	v3p3-supply = <&pm8226_l20>;
+};
-- 
2.34.1

Re: [PATCH v3 3/3] ARM: dts: qcom: Add support for Samsung Galaxy Tab 4 10.1 (SM-T530)

[Dmitry Baryshkov]

On Sun, 24 Jul 2022 at 20:25, Matti Lehtimäki <matti.lehtimaki@gmail.com> wrote:
>
> Add a device tree for the Samsung Galaxy Tab 4 10.1 (SM-T530) wifi tablet
> based on the apq8026 platform.
>
> Currently supported are accelerometer sensor, hall sensor,
> internal storage, physical buttons (power & volume), screen
> (based on simple-framebuffer set up by the bootloader), sdcard,
> touchscreen and USB.
>
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
> ---
> Changes in v3:
>   - Fix sdhc_2 bus width
>   - Reorder includes
>
> Changes in v2:
>   - Change codename to matisse-wifi
>   - Remove msm-id, not needed when lk2nd is used
>   - Remove unused labels from reserved memory regions
>   - Rename muic node
> ---
>  arch/arm/boot/dts/Makefile                    |   1 +
>  .../dts/qcom-apq8026-samsung-matisse-wifi.dts | 469 ++++++++++++++++++
>  2 files changed, 470 insertions(+)
>  create mode 100644 arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 5112f493f494..8bac4f4f8656 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -1010,6 +1010,7 @@ dtb-$(CONFIG_ARCH_QCOM) += \
>         qcom-apq8016-sbc.dtb \
>         qcom-apq8026-asus-sparrow.dtb \
>         qcom-apq8026-lg-lenok.dtb \
> +       qcom-apq8026-samsung-matisse-wifi.dtb \
>         qcom-apq8060-dragonboard.dtb \
>         qcom-apq8064-cm-qs600.dtb \
>         qcom-apq8064-ifc6410.dtb \
> diff --git a/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
> new file mode 100644
> index 000000000000..78a119107069
> --- /dev/null
> +++ b/arch/arm/boot/dts/qcom-apq8026-samsung-matisse-wifi.dts
> @@ -0,0 +1,469 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) 2022, Matti Lehtimäki <matti.lehtimaki@gmail.com>
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/input/input.h>
> +#include "qcom-msm8226.dtsi"
> +#include "qcom-pm8226.dtsi"
> +
> +/delete-node/ &smem_region;

Please move this to the /reserved-memory node. having it there would
help understanding that we are just changing the address.

> +
> +/ {
> +       model = "Samsung Galaxy Tab 4 10.1";
> +       compatible = "samsung,matisse-wifi", "qcom,apq8026";
> +       chassis-type = "tablet";
> +

[skipped]

> +       i2c-muic {
> +               compatible = "i2c-gpio";

Is there any reason for using i2c-gpio rather than blsp_i2c4?
According to the pinctrl-msm8226, gpio14/15 can be mapped to the blsp.

> +               sda-gpios = <&tlmm 14 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
> +               scl-gpios = <&tlmm 15 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
> +
> +               pinctrl-names = "default";
> +               pinctrl-0 = <&muic_i2c_default_state>;
> +
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               muic: usb-switch@25 {
> +                       compatible = "siliconmitus,sm5502-muic";
> +                       reg = <0x25>;
> +
> +                       interrupt-parent = <&tlmm>;
> +                       interrupts = <67 IRQ_TYPE_EDGE_FALLING>;
> +
> +                       pinctrl-names = "default";
> +                       pinctrl-0 = <&muic_int_default_state>;
> +               };
> +       };

[skipped]


-- 
With best wishes
Dmitry

Re: [PATCH v3 3/3] ARM: dts: qcom: Add support for Samsung Galaxy Tab 4 10.1 (SM-T530)

[Matti Lehtimäki]

On 24.7.2022 21.55, Dmitry Baryshkov wrote:
> On Sun, 24 Jul 2022 at 20:25, Matti Lehtimäki <matti.lehtimaki@gmail.com> wrote:
>> +/delete-node/ &smem_region;
> 
> Please move this to the /reserved-memory node. having it there would
> help understanding that we are just changing the address.

I can move this to /reserved-memory node in next version. Other option
would be to have a comment here, it seems both ways are used.

>> +       i2c-muic {
>> +               compatible = "i2c-gpio";
> 
> Is there any reason for using i2c-gpio rather than blsp_i2c4?
> According to the pinctrl-msm8226, gpio14/15 can be mapped to the blsp.

The reason to use i2c-gpio for this was using the other devices with
similar node as an example. I tested and having the muic node in
blsp_i2c4 worked the same.

-Matti