[PATCH v2] arm: dts: sun8i: Add the TBS A711 tablet devicetree

[PATCH v2] arm: dts: sun8i: Add the TBS A711 tablet devicetree

[Maxime Ripard]

The TBS A711 is a tablet with an A83T, a modem, wifi/BT chip, an eMMC and a
1024x600 LVDS display.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
Changes from v1:
  - Added the vqmmc
  - Added the vbus supplies to the PHY
  - Changed a bit the uart1 pinctrl formatting

 arch/arm/boot/dts/Makefile                |   1 +
 arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 199 ++++++++++++++++++++++++++++++
 2 files changed, 200 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index d9af20b65932..237c16055154 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -906,6 +906,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
 	sun8i-a83t-allwinner-h8homlet-v2.dtb \
 	sun8i-a83t-bananapi-m3.dtb \
 	sun8i-a83t-cubietruck-plus.dtb \
+	sun8i-a83t-tbs-a711.dtb \
 	sun8i-h2-plus-orangepi-zero.dtb \
 	sun8i-h3-bananapi-m2-plus.dtb \
 	sun8i-h3-beelink-x2.dtb \
diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
new file mode 100644
index 000000000000..723641f56a74
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2017 Touchless Biometric Systems AG
+ * Tomas Novotny <tomas@novotny.cz>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+#include "sun8i-a83t.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+/ {
+	model = "TBS A711 Tablet";
+	compatible = "tbs-biometrics,a711", "allwinner,sun8i-a83t";
+
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	reg_vbat: reg-vbat {
+		compatible = "regulator-fixed";
+		regulator-name = "vbat";
+		regulator-min-microvolt = <3700000>;
+		regulator-max-microvolt = <3700000>;
+	};
+
+	reg_vmain: reg-vmain {
+		compatible = "regulator-fixed";
+		regulator-name = "vmain";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&r_pio 0 9 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		vin-supply = <&reg_vbat>;
+	};
+
+	wifi_pwrseq: wifi_pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 WL-PMU-EN */
+
+		/*
+		 * This is actually Bluetooth's clock, but we have to
+		 * hook it up somewheere
+		 */
+		clocks = <&ac100_rtc 1>;
+		clock-names = "ext_clock";
+	};
+};
+
+/*
+ * An USB-2 hub is connected here, which also means we don't need to
+ * enable the OHCI controller.
+ */
+&ehci0 {
+	status = "okay";
+};
+
+/*
+ * There's a modem connected here that needs to be initialised before
+ * being able to be enumerated.
+ */
+&ehci1 {
+	status = "okay";
+};
+
+&mmc0 {
+	vmmc-supply = <&reg_vcc3v3>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_pins>;
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
+
+&mmc1 {
+	mmc-pwrseq = <&wifi_pwrseq>;
+	bus-width = <4>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc1_pins>;
+	vmmc-supply = <&reg_vcc3v3>;
+	vqmmc-supply = <&reg_vcc3v3>;
+	non-removable;
+	wakeup-source;
+	status = "okay";
+
+	brcmf: wifi at 1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+		interrupt-parent = <&r_pio>;
+		interrupts = <0 3 IRQ_TYPE_LEVEL_LOW>; /* PL3 WL_WAKE_UP */
+		interrupt-names = "host-wake";
+	};
+};
+
+&mmc2 {
+	pinctrl-0 = <&mmc2_8bit_emmc_pins>;
+	pinctrl-names = "default";
+	vmmc-supply = <&reg_vcc3v3>;
+	vqmmc-supply = <&reg_vcc3v3>;
+	bus-width = <8>;
+	non-removable;
+	cap-mmc-hw-reset;
+	status = "okay";
+};
+
+&r_rsb {
+	status = "okay";
+
+	axp813: pmic at 3a3 {
+		compatible = "x-powers,axp813";
+		reg = <0x3a3>;
+		interrupt-parent = <&r_intc>;
+		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	ac100: codec at e89 {
+		compatible = "x-powers,ac100";
+		reg = <0xe89>;
+
+		ac100_codec: codec {
+			compatible = "x-powers,ac100-codec";
+			interrupt-parent = <&r_pio>;
+			interrupts = <0 12 IRQ_TYPE_LEVEL_LOW>; /* PL12 */
+			#clock-cells = <0>;
+			clock-output-names = "4M_adda";
+		};
+
+		ac100_rtc: rtc {
+			compatible = "x-powers,ac100-rtc";
+			interrupt-parent = <&r_intc>;
+			interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+			clocks = <&ac100_codec>;
+			#clock-cells = <1>;
+			clock-output-names = "cko1_rtc",
+					     "cko2_rtc",
+					     "cko3_rtc";
+		};
+	};
+
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pb_pins>;
+	status = "okay";
+};
+
+/* There's the BT part of the AP6210 connected to that UART */
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
+	status = "okay";
+};
+
+&usbphy {
+	usb1_vbus_supply = <&reg_vcc5v0>;
+	usb2_vbus_supply = <&reg_vcc5v0>;
+	status = "okay";
+};
-- 
2.13.5

[PATCH v2] arm: dts: sun8i: Add the TBS A711 tablet devicetree

[Chen-Yu Tsai]

On Fri, Sep 1, 2017 at 9:48 PM, Maxime Ripard
<maxime.ripard@free-electrons.com> wrote:
> The TBS A711 is a tablet with an A83T, a modem, wifi/BT chip, an eMMC and a
> 1024x600 LVDS display.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
> ---
> Changes from v1:
>   - Added the vqmmc
>   - Added the vbus supplies to the PHY
>   - Changed a bit the uart1 pinctrl formatting
>
>  arch/arm/boot/dts/Makefile                |   1 +
>  arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 199 ++++++++++++++++++++++++++++++
>  2 files changed, 200 insertions(+)
>  create mode 100644 arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index d9af20b65932..237c16055154 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -906,6 +906,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
>         sun8i-a83t-allwinner-h8homlet-v2.dtb \
>         sun8i-a83t-bananapi-m3.dtb \
>         sun8i-a83t-cubietruck-plus.dtb \
> +       sun8i-a83t-tbs-a711.dtb \
>         sun8i-h2-plus-orangepi-zero.dtb \
>         sun8i-h3-bananapi-m2-plus.dtb \
>         sun8i-h3-beelink-x2.dtb \
> diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> new file mode 100644
> index 000000000000..723641f56a74
> --- /dev/null
> +++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> @@ -0,0 +1,199 @@
> +/*
> + * Copyright (C) 2017 Touchless Biometric Systems AG
> + * Tomas Novotny <tomas@novotny.cz>
> + *
> + * This file is dual-licensed: you can use it either under the terms
> + * of the GPL or the X11 license, at your option. Note that this dual
> + * licensing only applies to this file, and not this project as a
> + * whole.
> + *
> + *  a) This file is free software; you can redistribute it and/or
> + *     modify it under the terms of the GNU General Public License as
> + *     published by the Free Software Foundation; either version 2 of the
> + *     License, or (at your option) any later version.
> + *
> + *     This file is distributed in the hope that it will be useful,
> + *     but WITHOUT ANY WARRANTY; without even the implied warranty of
> + *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + *     GNU General Public License for more details.
> + *
> + * Or, alternatively,
> + *
> + *  b) Permission is hereby granted, free of charge, to any person
> + *     obtaining a copy of this software and associated documentation
> + *     files (the "Software"), to deal in the Software without
> + *     restriction, including without limitation the rights to use,
> + *     copy, modify, merge, publish, distribute, sublicense, and/or
> + *     sell copies of the Software, and to permit persons to whom the
> + *     Software is furnished to do so, subject to the following
> + *     conditions:
> + *
> + *     The above copyright notice and this permission notice shall be
> + *     included in all copies or substantial portions of the Software.
> + *
> + *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
> + *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
> + *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
> + *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + *     OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +/dts-v1/;
> +#include "sun8i-a83t.dtsi"
> +#include "sunxi-common-regulators.dtsi"
> +
> +/ {
> +       model = "TBS A711 Tablet";
> +       compatible = "tbs-biometrics,a711", "allwinner,sun8i-a83t";
> +
> +       aliases {
> +               serial0 = &uart0;
> +               serial1 = &uart1;
> +       };
> +
> +       chosen {
> +               stdout-path = "serial0:115200n8";
> +       };
> +
> +       reg_vbat: reg-vbat {
> +               compatible = "regulator-fixed";
> +               regulator-name = "vbat";
> +               regulator-min-microvolt = <3700000>;
> +               regulator-max-microvolt = <3700000>;
> +       };
> +
> +       reg_vmain: reg-vmain {
> +               compatible = "regulator-fixed";
> +               regulator-name = "vmain";
> +               regulator-min-microvolt = <5000000>;
> +               regulator-max-microvolt = <5000000>;
> +               gpio = <&r_pio 0 9 GPIO_ACTIVE_HIGH>;
> +               enable-active-high;
> +               vin-supply = <&reg_vbat>;
> +       };
> +
> +       wifi_pwrseq: wifi_pwrseq {
> +               compatible = "mmc-pwrseq-simple";
> +               reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 WL-PMU-EN */
> +
> +               /*
> +                * This is actually Bluetooth's clock, but we have to
> +                * hook it up somewheere
> +                */
> +               clocks = <&ac100_rtc 1>;
> +               clock-names = "ext_clock";
> +       };
> +};
> +
> +/*
> + * An USB-2 hub is connected here, which also means we don't need to
> + * enable the OHCI controller.
> + */
> +&ehci0 {
> +       status = "okay";
> +};
> +
> +/*
> + * There's a modem connected here that needs to be initialised before
> + * being able to be enumerated.
> + */
> +&ehci1 {
> +       status = "okay";
> +};
> +
> +&mmc0 {
> +       vmmc-supply = <&reg_vcc3v3>;
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&mmc0_pins>;
> +       cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;
> +       status = "okay";
> +};
> +
> +&mmc1 {
> +       mmc-pwrseq = <&wifi_pwrseq>;
> +       bus-width = <4>;
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&mmc1_pins>;
> +       vmmc-supply = <&reg_vcc3v3>;
> +       vqmmc-supply = <&reg_vcc3v3>;
> +       non-removable;
> +       wakeup-source;
> +       status = "okay";
> +
> +       brcmf: wifi at 1 {
> +               reg = <1>;
> +               compatible = "brcm,bcm4329-fmac";
> +               interrupt-parent = <&r_pio>;
> +               interrupts = <0 3 IRQ_TYPE_LEVEL_LOW>; /* PL3 WL_WAKE_UP */
> +               interrupt-names = "host-wake";
> +       };
> +};
> +
> +&mmc2 {
> +       pinctrl-0 = <&mmc2_8bit_emmc_pins>;
> +       pinctrl-names = "default";
> +       vmmc-supply = <&reg_vcc3v3>;
> +       vqmmc-supply = <&reg_vcc3v3>;
> +       bus-width = <8>;
> +       non-removable;
> +       cap-mmc-hw-reset;
> +       status = "okay";
> +};
> +
> +&r_rsb {
> +       status = "okay";
> +
> +       axp813: pmic at 3a3 {
> +               compatible = "x-powers,axp813";
> +               reg = <0x3a3>;
> +               interrupt-parent = <&r_intc>;
> +               interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> +       };
> +
> +       ac100: codec at e89 {
> +               compatible = "x-powers,ac100";
> +               reg = <0xe89>;
> +
> +               ac100_codec: codec {
> +                       compatible = "x-powers,ac100-codec";
> +                       interrupt-parent = <&r_pio>;
> +                       interrupts = <0 12 IRQ_TYPE_LEVEL_LOW>; /* PL12 */
> +                       #clock-cells = <0>;
> +                       clock-output-names = "4M_adda";
> +               };
> +
> +               ac100_rtc: rtc {
> +                       compatible = "x-powers,ac100-rtc";
> +                       interrupt-parent = <&r_intc>;
> +                       interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> +                       clocks = <&ac100_codec>;
> +                       #clock-cells = <1>;
> +                       clock-output-names = "cko1_rtc",
> +                                            "cko2_rtc",
> +                                            "cko3_rtc";
> +               };
> +       };
> +
> +};
> +
> +&uart0 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&uart0_pb_pins>;
> +       status = "okay";
> +};
> +
> +/* There's the BT part of the AP6210 connected to that UART */
> +&uart1 {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
> +       status = "okay";
> +};
> +
> +&usbphy {
> +       usb1_vbus_supply = <&reg_vcc5v0>;
> +       usb2_vbus_supply = <&reg_vcc5v0>;

OK. I was expecting something more controllable. If it's always on,
like tied to system 5V power, then there's little point in adding
them. It's just a dummy regulator either way.

Otherwise,

Reviewed-by: Chen-Yu Tsai <wens@csie.org>

BTW, do you have access to schematics for this tablet?

> +       status = "okay";
> +};
> --
> 2.13.5
>

[PATCH v2] arm: dts: sun8i: Add the TBS A711 tablet devicetree

[Maxime Ripard]

Hi,

On Fri, Sep 01, 2017 at 09:55:27PM +0800, Chen-Yu Tsai wrote:
> > +&usbphy {
> > +       usb1_vbus_supply = <&reg_vcc5v0>;
> > +       usb2_vbus_supply = <&reg_vcc5v0>;
> 
> OK. I was expecting something more controllable. If it's always on,
> like tied to system 5V power, then there's little point in adding
> them. It's just a dummy regulator either way.

Even if it works, I'd still prefer to model the regulator tree
properly, instead of having hanging regulators that are used by
something but you don't really know what.

> Otherwise,
> 
> Reviewed-by: Chen-Yu Tsai <wens@csie.org>

Applied, thanks!

> BTW, do you have access to schematics for this tablet?

I do, but I'm not sure how public they are. You have the fex file here
if you're looking for something in there:
https://www.mail-archive.com/linux-sunxi at googlegroups.com/msg21573.html

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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