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Date: Mon, 18 Jul 2022 15:51:54 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Matti Lehtimäki <matti.lehtimaki@...il.com>,
linux-arm-msm@...r.kernel.org
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
soc@...nel.org, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Konrad Dybcio <konrad.dybcio@...ainline.org>,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] ARM: dts: qcom: Add support for Samsung Galaxy Tab 4
10.1 (SM-T530)
On 17/07/2022 23:34, Matti Lehtimäki 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@...il.com>
Thank you for your patch. There is something to discuss/improve.
> ---
> arch/arm/boot/dts/Makefile | 1 +
> .../dts/qcom-apq8026-samsung-matissewifi.dts | 475 ++++++++++++++++++
> 2 files changed, 476 insertions(+)
> create mode 100644 arch/arm/boot/dts/qcom-apq8026-samsung-matissewifi.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 5112f493f494..4d02a1740079 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-matissewifi.dtb \
> qcom-apq8060-dragonboard.dtb \
> qcom-apq8064-cm-qs600.dtb \
> qcom-apq8064-ifc6410.dtb \
> diff --git a/arch/arm/boot/dts/qcom-apq8026-samsung-matissewifi.dts b/arch/arm/boot/dts/qcom-apq8026-samsung-matissewifi.dts
> new file mode 100644
> index 000000000000..f4c5eb9db11c
> --- /dev/null
> +++ b/arch/arm/boot/dts/qcom-apq8026-samsung-matissewifi.dts
> @@ -0,0 +1,475 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) 2022, Matti Lehtimäki <matti.lehtimaki@...il.com>
> + */
> +
> +/dts-v1/;
> +
> +#include "qcom-msm8226.dtsi"
> +#include "qcom-pm8226.dtsi"
> +#include <dt-bindings/input/input.h>
> +
> +/delete-node/ &smem_region;
> +
> +/ {
> + model = "Samsung Galaxy Tab 4 10.1";
> + compatible = "samsung,matissewifi", "qcom,apq8026";
> + chassis-type = "tablet";
> +
> + qcom,msm-id = <0xC708FF01 0 0x20000>,
> + <0xC708FF01 1 0x20000>,
> + <0xC708FF01 2 0x20000>,
> + <0xC708FF01 3 0x20000>;
Lower case hex and does not match bindings.
https://lore.kernel.org/all/20220705130300.100882-2-krzysztof.kozlowski@linaro.org/
This would need detailed explanation because it really does not look
correct.
> +
> + 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@...0000 {
> + compatible = "simple-framebuffer";
> + reg = <0x3200000 0x800000>;
> + width = <1280>;
> + height = <800>;
> + stride = <(1280 * 3)>;
> + format = "r8g8b8";
> + status = "okay";
> + };
> + };
> +
> + 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: extcon@25 {
extcon is Linux specific, need some generic name instead.
> + 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@...0000 {
Generic node names, so memory@
> + reg = <0x3200000 0x800000>;
> + no-map;
> + };
> +
> + mpss_region: mpss@...0000 {
The same and so on...
> + reg = <0x08400000 0x1f00000>;
> + no-map;
> + };
> +
> + mba_region: mba@...0000 {
Best regards,
Krzysztof
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