[PATCH 0/3] Board support for Fernsehfee 3.0

[PATCH 0/3] Board support for Fernsehfee 3.0

[J. Neuschäfer via B4 Relay]

Fernsehfee[1] ("TV fairy") is a family of set-top boxes marketed as
ad-blocking appliances. This patchset adds board support in the form of
a device tree for the third generation, Fernsehfee 3.0.

[1]: https://fernsehfee.de/ (German), https://www.telefairy.com/ (English)

Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
---
J. Neuschäfer (3):
      dt-bindings: vendor-prefixes: Add TC Unterhaltungselektronik AG
      dt-bindings: arm: amlogic: Add TCU Fernsehfee 3.0 board
      ARM: dts: amlogic: Add TCU Fernsehfee 3.0

 Documentation/devicetree/bindings/arm/amlogic.yaml |   1 +
 .../devicetree/bindings/vendor-prefixes.yaml       |   2 +
 arch/arm/boot/dts/amlogic/Makefile                 |   1 +
 arch/arm/boot/dts/amlogic/meson8-fernsehfee3.dts   | 219 +++++++++++++++++++++
 arch/arm/boot/dts/amlogic/meson8.dtsi              |  18 ++
 5 files changed, 241 insertions(+)
---
base-commit: 4701f33a10702d5fc577c32434eb62adde0a1ae1
change-id: 20250315-fernsehfee-b5aef930ca7e

Best regards,
-- 
J. Neuschäfer <j.ne@posteo.net>

[PATCH 1/3] dt-bindings: vendor-prefixes: Add TC Unterhaltungselektronik AG

[J. Neuschäfer via B4 Relay]

From: "J. Neuschäfer" <j.ne@posteo.net>

TC Unterhaltungselektronik is the company behind Fernsehfee branded
set-top boxes.

Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 5079ca6ce1d1e9e2b52312439e4b1d48b262200c..0019f6131bbfc11ba55f5a15a238825abf665aaf 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -1484,6 +1484,8 @@ patternProperties:
     description: Toby Churchill Ltd.
   "^tcs,.*":
     description: Shenzhen City Tang Cheng Technology Co., Ltd.
+  "^tcu,.*":
+    description: TC Unterhaltungselektronik AG
   "^tdo,.*":
     description: Shangai Top Display Optoelectronics Co., Ltd
   "^team-source-display,.*":

-- 
2.48.0.rc1.219.gb6b6757d772

Re: [PATCH 1/3] dt-bindings: vendor-prefixes: Add TC Unterhaltungselektronik AG

[Krzysztof Kozlowski]

On 23/03/2025 13:37, J. Neuschäfer via B4 Relay wrote:
> From: "J. Neuschäfer" <j.ne@posteo.net>
> 
> TC Unterhaltungselektronik is the company behind Fernsehfee branded
> set-top boxes.
> 
> Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
> ---

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

Best regards,
Krzysztof

[PATCH 2/3] dt-bindings: arm: amlogic: Add TCU Fernsehfee 3.0 board

[J. Neuschäfer via B4 Relay]

From: "J. Neuschäfer" <j.ne@posteo.net>

Fernsehfee ("TV fairy") 3.0 is a set-top box with HDMI input and output
ports. It originally ran Android 4.4 and a Linux 3.10 kernel.

  https://fernsehfee.de/  (German)
  https://telefairy.com/  (English)

Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
---
 Documentation/devicetree/bindings/arm/amlogic.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/amlogic.yaml b/Documentation/devicetree/bindings/arm/amlogic.yaml
index 0647851ae1f55a27bfb148252532bcf15ca905bf..f6f045528da32cf4625b30da59262ca21da860e6 100644
--- a/Documentation/devicetree/bindings/arm/amlogic.yaml
+++ b/Documentation/devicetree/bindings/arm/amlogic.yaml
@@ -27,6 +27,7 @@ properties:
         items:
           - enum:
               - minix,neo-x8
+              - tcu,fernsehfee3
           - const: amlogic,meson8
 
       - description: Boards with the Amlogic Meson8m2 SoC

-- 
2.48.0.rc1.219.gb6b6757d772

Re: [PATCH 2/3] dt-bindings: arm: amlogic: Add TCU Fernsehfee 3.0 board

[Krzysztof Kozlowski]

On 23/03/2025 13:37, J. Neuschäfer via B4 Relay wrote:
> From: "J. Neuschäfer" <j.ne@posteo.net>
> 
> Fernsehfee ("TV fairy") 3.0 is a set-top box with HDMI input and output
> ports. It originally ran Android 4.4 and a Linux 3.10 kernel.
> 
>   https://fernsehfee.de/  (German)
>   https://telefairy.com/  (English)

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

Best regards,
Krzysztof

Re: [PATCH 2/3] dt-bindings: arm: amlogic: Add TCU Fernsehfee 3.0 board

[Martin Blumenstingl]

On Sun, Mar 23, 2025 at 1:38 PM J. Neuschäfer via B4 Relay
<devnull+j.ne.posteo.net@kernel.org> wrote:
>
> From: "J. Neuschäfer" <j.ne@posteo.net>
>
> Fernsehfee ("TV fairy") 3.0 is a set-top box with HDMI input and output
> ports. It originally ran Android 4.4 and a Linux 3.10 kernel.
>
>   https://fernsehfee.de/  (German)
>   https://telefairy.com/  (English)
>
> Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

[PATCH 3/3] ARM: dts: amlogic: Add TCU Fernsehfee 3.0

[J. Neuschäfer via B4 Relay]

From: "J. Neuschäfer" <j.ne@posteo.net>

Fernsehfee[1] ("TV fairy") 3.0 is a set-top box with HDMI input and
output ports. It originally ran Android 4.4 and a Linux 3.10 kernel.

The following features are tested and known to work:

- Ethernet
- Power LED (switching between green and red)
- Power button
- eMMC
- SD Card
- USB
- Wifi

The following features are untested or not working:

- HDMI input and output
- Infrared remote control input and output

[1]: https://fernsehfee.de/ (German), https://telefairy.com/ (English)

Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
---
 arch/arm/boot/dts/amlogic/Makefile               |   1 +
 arch/arm/boot/dts/amlogic/meson8-fernsehfee3.dts | 219 +++++++++++++++++++++++
 arch/arm/boot/dts/amlogic/meson8.dtsi            |  18 ++
 3 files changed, 238 insertions(+)

diff --git a/arch/arm/boot/dts/amlogic/Makefile b/arch/arm/boot/dts/amlogic/Makefile
index 504c533b1173298ec7f45099888d88b2fb74b978..3c8a1e88b386cd7fb9b5f41f47d7ff78fe7eeacc 100644
--- a/arch/arm/boot/dts/amlogic/Makefile
+++ b/arch/arm/boot/dts/amlogic/Makefile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_MACH_MESON8) += \
 	meson8-minix-neo-x8.dtb \
+	meson8-fernsehfee3.dtb \
 	meson8b-ec100.dtb \
 	meson8b-mxq.dtb \
 	meson8b-odroidc1.dtb \
diff --git a/arch/arm/boot/dts/amlogic/meson8-fernsehfee3.dts b/arch/arm/boot/dts/amlogic/meson8-fernsehfee3.dts
new file mode 100644
index 0000000000000000000000000000000000000000..47507316ac4a56f2bcf84ad0446a06ea9fe890cd
--- /dev/null
+++ b/arch/arm/boot/dts/amlogic/meson8-fernsehfee3.dts
@@ -0,0 +1,219 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+// Copyright (C) 2025 J. Neuschäfer <j.ne@posteo.net>
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/leds/common.h>
+
+#include "meson8.dtsi"
+
+/ {
+	model = "Fernsehfee 3.0";
+	compatible = "tcu,fernsehfee3", "amlogic,meson8";
+
+	aliases {
+		serial0 = &uart_AO;
+		gpiochip0 = &gpio;
+		gpiochip1 = &gpio_ao;
+		i2c0 = &i2c_AO;
+		i2c1 = &i2c_B;
+		mmc0 = &sdhc;
+		mmc1 = &sdio;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x40000000>;  /* 1 GiB */
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <100>;
+
+		power-button {
+			label = "Power button";
+			linux,code = <KEY_POWER>;
+			gpios = <&gpio_ao GPIOAO_3 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			/*
+			 * The power LED can be turned red, otherwise it is green.
+			 */
+			gpios = <&gpio_ao GPIO_TEST_N GPIO_ACTIVE_LOW>;
+			function = LED_FUNCTION_POWER;
+			color = <LED_COLOR_ID_RED>;
+		};
+	};
+
+	vcc_5v: regulator-5v {
+		/* 5V rail, always on as long as the system is running */
+		compatible = "regulator-fixed";
+		regulator-name = "5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+	};
+
+	vcc_3v3: regulator-3v3 {
+		/* Chipown AP2420 step-down converter */
+		compatible = "regulator-fixed";
+		regulator-name = "3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc_5v>;
+	};
+
+	vcc_1v8: regulator-1v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc_3v3>;
+	};
+
+	wifi_3v3: regulator-wifi {
+		compatible = "regulator-fixed";
+		regulator-name = "3.3V-WIFI";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc_3v3>;
+		gpio = <&gpio GPIOX_11 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+};
+
+&ethmac {
+	status = "okay";
+	pinctrl-0 = <&eth_pins>;
+	pinctrl-names = "default";
+	phy-handle = <&eth_phy0>;
+	phy-mode = "rmii";
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		eth_phy0: ethernet-phy@0 {
+			/* IC Plus IP101A (0x02430c54) */
+			reg = <0>;
+
+			reset-assert-us = <10000>;
+			reset-deassert-us = <10000>;
+			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&i2c_AO {
+	status = "okay";
+	pinctrl-0 = <&i2c_ao_pins>;
+	pinctrl-names = "default";
+
+	pmic@32 {
+		compatible = "ricoh,rn5t618";
+		reg = <0x32>;
+		system-power-controller;
+	};
+
+	eeprom@50 {
+		/* Fairchild FM24C08A */
+		compatible = "atmel,24c08";
+		reg = <0x50>;
+		pagesize = <16>;
+		wp-gpios = <&gpio GPIOH_3 GPIO_ACTIVE_HIGH>;
+		num-addresses = <4>;
+	};
+};
+
+&i2c_B {
+	status = "okay";
+	pinctrl-0 = <&i2c_b_pins>;
+	pinctrl-names = "default";
+
+	/* TODO: SiI9293 HDMI receiver @ 0x39 */
+};
+
+&sdhc {
+	status = "okay";
+	pinctrl-0 = <&sdxc_c_pins>;
+	pinctrl-names = "default";
+
+	/* eMMC */
+	bus-width = <8>;
+	max-frequency = <100000000>;
+
+	disable-wp;
+	cap-mmc-highspeed;
+	mmc-hs200-1_8v;
+	no-sdio;
+
+	vmmc-supply = <&vcc_3v3>;
+	vqmmc-supply = <&vcc_1v8>;
+};
+
+&sdio {
+	status = "okay";
+	pinctrl-0 = <&sd_b_pins>;
+
+	/* SD card */
+	sd_card_slot: slot@1 {
+		compatible = "mmc-slot";
+		reg = <1>;
+		status = "okay";
+
+		bus-width = <4>;
+		cap-mmc-highspeed;
+		cap-sd-highspeed;
+		disable-wp;
+
+		cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_LOW>;
+
+		vmmc-supply = <&vcc_3v3>;
+	};
+};
+
+&uart_AO {
+	status = "okay";
+	pinctrl-0 = <&uart_ao_a_pins>;
+	pinctrl-names = "default";
+};
+
+&usb0 {
+	status = "okay";
+};
+
+&usb0_phy {
+	status = "okay";
+};
+
+&usb1 {
+	status = "okay";
+	dr_mode = "host";
+	/*
+	 * This bus features a Realtek RTL8188 2.4GHz WiFi module, with a
+	 * 3.3V supply voltage that must be enabled before use.
+	 */
+	vbus-supply = <&wifi_3v3>;
+};
+
+&usb1_phy {
+	status = "okay";
+};
+
+&ir_receiver {
+	status = "okay";
+	pinctrl-0 = <&ir_recv_pins>;
+	pinctrl-names = "default";
+};
diff --git a/arch/arm/boot/dts/amlogic/meson8.dtsi b/arch/arm/boot/dts/amlogic/meson8.dtsi
index 9ff142d9fe3f4576fdd3230a966c8a6250870de7..300eccbfc0071ce10290be1c496132ac6b6a4dbc 100644
--- a/arch/arm/boot/dts/amlogic/meson8.dtsi
+++ b/arch/arm/boot/dts/amlogic/meson8.dtsi
@@ -477,6 +477,14 @@ gpio: bank@80 {
 			gpio-ranges = <&pinctrl_cbus 0 0 120>;
 		};
 
+		i2c_b_pins: i2c-b {
+			mux {
+				groups = "i2c_sda_b", "i2c_sck_b";
+				function = "i2c_b";
+				bias-disable;
+			};
+		};
+
 		sd_a_pins: sd-a {
 			mux {
 				groups = "sd_d0_a", "sd_d1_a", "sd_d2_a",
@@ -522,6 +530,16 @@ mux {
 			};
 		};
 
+		sdxc_c_pins: sdxc-c {
+			mux {
+				groups = "sdxc_d0_c", "sdxc_d13_c",
+					"sdxc_clk_c", "sdxc_cmd_c",
+					"sdxc_d47_c";
+				function = "sdxc_c";
+				bias_pull_up;
+			};
+		};
+
 		spdif_out_pins: spdif-out {
 			mux {
 				groups = "spdif_out";

-- 
2.48.0.rc1.219.gb6b6757d772

HDMI output (Re: [PATCH 3/3] ARM: dts: amlogic: Add TCU Fernsehfee 3.0)

[J. Neuschäfer]

On Sun, Mar 23, 2025 at 01:37:52PM +0100, J. Neuschäfer via B4 Relay wrote:
> From: "J. Neuschäfer" <j.ne@posteo.net>
> 
> Fernsehfee[1] ("TV fairy") 3.0 is a set-top box with HDMI input and
> output ports. It originally ran Android 4.4 and a Linux 3.10 kernel.
> 
> The following features are tested and known to work:
> 
> - Ethernet
> - Power LED (switching between green and red)
> - Power button
> - eMMC
> - SD Card
> - USB
> - Wifi
> 
> The following features are untested or not working:
> 
> - HDMI input and output
> - Infrared remote control input and output

FWIW, with Martin Blumenstingl's meson-mx-integration-6.13-20250112
branch, HDMI output works (albeit not at all resolutions).


Best regards,
J. Neuschäfer

Re: [PATCH 3/3] ARM: dts: amlogic: Add TCU Fernsehfee 3.0

[Neil Armstrong]

On 23/03/2025 13:37, J. Neuschäfer via B4 Relay wrote:
> From: "J. Neuschäfer" <j.ne@posteo.net>
> 
> Fernsehfee[1] ("TV fairy") 3.0 is a set-top box with HDMI input and
> output ports. It originally ran Android 4.4 and a Linux 3.10 kernel.
> 
> The following features are tested and known to work:
> 
> - Ethernet
> - Power LED (switching between green and red)
> - Power button
> - eMMC
> - SD Card
> - USB
> - Wifi
> 
> The following features are untested or not working:
> 
> - HDMI input and output
> - Infrared remote control input and output
> 
> [1]: https://fernsehfee.de/ (German), https://telefairy.com/ (English)
> 
> Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
> ---
>   arch/arm/boot/dts/amlogic/Makefile               |   1 +
>   arch/arm/boot/dts/amlogic/meson8-fernsehfee3.dts | 219 +++++++++++++++++++++++
>   arch/arm/boot/dts/amlogic/meson8.dtsi            |  18 ++
>   3 files changed, 238 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/amlogic/Makefile b/arch/arm/boot/dts/amlogic/Makefile
> index 504c533b1173298ec7f45099888d88b2fb74b978..3c8a1e88b386cd7fb9b5f41f47d7ff78fe7eeacc 100644
> --- a/arch/arm/boot/dts/amlogic/Makefile
> +++ b/arch/arm/boot/dts/amlogic/Makefile
> @@ -1,6 +1,7 @@
>   # SPDX-License-Identifier: GPL-2.0
>   dtb-$(CONFIG_MACH_MESON8) += \
>   	meson8-minix-neo-x8.dtb \
> +	meson8-fernsehfee3.dtb \
>   	meson8b-ec100.dtb \
>   	meson8b-mxq.dtb \
>   	meson8b-odroidc1.dtb \
> diff --git a/arch/arm/boot/dts/amlogic/meson8-fernsehfee3.dts b/arch/arm/boot/dts/amlogic/meson8-fernsehfee3.dts
> new file mode 100644
> index 0000000000000000000000000000000000000000..47507316ac4a56f2bcf84ad0446a06ea9fe890cd
> --- /dev/null
> +++ b/arch/arm/boot/dts/amlogic/meson8-fernsehfee3.dts
> @@ -0,0 +1,219 @@
> +// SPDX-License-Identifier: GPL-2.0-only OR MIT
> +// Copyright (C) 2025 J. Neuschäfer <j.ne@posteo.net>
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/linux-event-codes.h>
> +#include <dt-bindings/leds/common.h>
> +
> +#include "meson8.dtsi"
> +
> +/ {
> +	model = "Fernsehfee 3.0";
> +	compatible = "tcu,fernsehfee3", "amlogic,meson8";
> +
> +	aliases {
> +		serial0 = &uart_AO;
> +		gpiochip0 = &gpio;
> +		gpiochip1 = &gpio_ao;
> +		i2c0 = &i2c_AO;
> +		i2c1 = &i2c_B;
> +		mmc0 = &sdhc;
> +		mmc1 = &sdio;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	memory@0 {
> +		device_type = "memory";
> +		reg = <0x0 0x40000000>;  /* 1 GiB */
> +	};
> +
> +	gpio-keys {
> +		compatible = "gpio-keys-polled";
> +		poll-interval = <100>;
> +
> +		power-button {
> +			label = "Power button";
> +			linux,code = <KEY_POWER>;
> +			gpios = <&gpio_ao GPIOAO_3 GPIO_ACTIVE_LOW>;
> +		};
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		led-0 {
> +			/*
> +			 * The power LED can be turned red, otherwise it is green.
> +			 */
> +			gpios = <&gpio_ao GPIO_TEST_N GPIO_ACTIVE_LOW>;
> +			function = LED_FUNCTION_POWER;
> +			color = <LED_COLOR_ID_RED>;
> +		};
> +	};
> +
> +	vcc_5v: regulator-5v {
> +		/* 5V rail, always on as long as the system is running */
> +		compatible = "regulator-fixed";
> +		regulator-name = "5V";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		regulator-always-on;
> +	};
> +
> +	vcc_3v3: regulator-3v3 {
> +		/* Chipown AP2420 step-down converter */
> +		compatible = "regulator-fixed";
> +		regulator-name = "3.3V";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		vin-supply = <&vcc_5v>;
> +	};
> +
> +	vcc_1v8: regulator-1v8 {
> +		compatible = "regulator-fixed";
> +		regulator-name = "1.8V";
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <1800000>;
> +		vin-supply = <&vcc_3v3>;
> +	};
> +
> +	wifi_3v3: regulator-wifi {
> +		compatible = "regulator-fixed";
> +		regulator-name = "3.3V-WIFI";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		vin-supply = <&vcc_3v3>;
> +		gpio = <&gpio GPIOX_11 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +	};
> +};
> +
> +&ethmac {
> +	status = "okay";
> +	pinctrl-0 = <&eth_pins>;
> +	pinctrl-names = "default";
> +	phy-handle = <&eth_phy0>;
> +	phy-mode = "rmii";
> +
> +	mdio {
> +		compatible = "snps,dwmac-mdio";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		eth_phy0: ethernet-phy@0 {
> +			/* IC Plus IP101A (0x02430c54) */
> +			reg = <0>;
> +
> +			reset-assert-us = <10000>;
> +			reset-deassert-us = <10000>;
> +			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;
> +		};
> +	};
> +};
> +
> +&i2c_AO {
> +	status = "okay";
> +	pinctrl-0 = <&i2c_ao_pins>;
> +	pinctrl-names = "default";
> +
> +	pmic@32 {
> +		compatible = "ricoh,rn5t618";
> +		reg = <0x32>;
> +		system-power-controller;
> +	};
> +
> +	eeprom@50 {
> +		/* Fairchild FM24C08A */
> +		compatible = "atmel,24c08";
> +		reg = <0x50>;
> +		pagesize = <16>;
> +		wp-gpios = <&gpio GPIOH_3 GPIO_ACTIVE_HIGH>;
> +		num-addresses = <4>;
> +	};
> +};
> +
> +&i2c_B {
> +	status = "okay";
> +	pinctrl-0 = <&i2c_b_pins>;
> +	pinctrl-names = "default";
> +
> +	/* TODO: SiI9293 HDMI receiver @ 0x39 */
> +};
> +
> +&sdhc {
> +	status = "okay";
> +	pinctrl-0 = <&sdxc_c_pins>;
> +	pinctrl-names = "default";
> +
> +	/* eMMC */
> +	bus-width = <8>;
> +	max-frequency = <100000000>;
> +
> +	disable-wp;
> +	cap-mmc-highspeed;
> +	mmc-hs200-1_8v;
> +	no-sdio;
> +
> +	vmmc-supply = <&vcc_3v3>;
> +	vqmmc-supply = <&vcc_1v8>;
> +};
> +
> +&sdio {
> +	status = "okay";
> +	pinctrl-0 = <&sd_b_pins>;
> +
> +	/* SD card */
> +	sd_card_slot: slot@1 {

Small NIT: no need to for a label here

> +		compatible = "mmc-slot";
> +		reg = <1>;
> +		status = "okay";
> +
> +		bus-width = <4>;
> +		cap-mmc-highspeed;
> +		cap-sd-highspeed;
> +		disable-wp;
> +
> +		cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_LOW>;
> +
> +		vmmc-supply = <&vcc_3v3>;
> +	};
> +};
> +
> +&uart_AO {
> +	status = "okay";
> +	pinctrl-0 = <&uart_ao_a_pins>;
> +	pinctrl-names = "default";
> +};
> +
> +&usb0 {
> +	status = "okay";
> +};
> +
> +&usb0_phy {
> +	status = "okay";
> +};
> +
> +&usb1 {
> +	status = "okay";
> +	dr_mode = "host";
> +	/*
> +	 * This bus features a Realtek RTL8188 2.4GHz WiFi module, with a
> +	 * 3.3V supply voltage that must be enabled before use.
> +	 */
> +	vbus-supply = <&wifi_3v3>;
> +};
> +
> +&usb1_phy {
> +	status = "okay";
> +};
> +
> +&ir_receiver {
> +	status = "okay";
> +	pinctrl-0 = <&ir_recv_pins>;
> +	pinctrl-names = "default";
> +};
> diff --git a/arch/arm/boot/dts/amlogic/meson8.dtsi b/arch/arm/boot/dts/amlogic/meson8.dtsi
> index 9ff142d9fe3f4576fdd3230a966c8a6250870de7..300eccbfc0071ce10290be1c496132ac6b6a4dbc 100644
> --- a/arch/arm/boot/dts/amlogic/meson8.dtsi
> +++ b/arch/arm/boot/dts/amlogic/meson8.dtsi
> @@ -477,6 +477,14 @@ gpio: bank@80 {
>   			gpio-ranges = <&pinctrl_cbus 0 0 120>;
>   		};
>   
> +		i2c_b_pins: i2c-b {
> +			mux {
> +				groups = "i2c_sda_b", "i2c_sck_b";
> +				function = "i2c_b";
> +				bias-disable;
> +			};
> +		};
> +
>   		sd_a_pins: sd-a {
>   			mux {
>   				groups = "sd_d0_a", "sd_d1_a", "sd_d2_a",
> @@ -522,6 +530,16 @@ mux {
>   			};
>   		};
>   
> +		sdxc_c_pins: sdxc-c {
> +			mux {
> +				groups = "sdxc_d0_c", "sdxc_d13_c",
> +					"sdxc_clk_c", "sdxc_cmd_c",
> +					"sdxc_d47_c";
> +				function = "sdxc_c";
> +				bias_pull_up;
> +			};
> +		};
> +
>   		spdif_out_pins: spdif-out {
>   			mux {
>   				groups = "spdif_out";
> 

Apart that:
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Thanks !
Neil

Re: [PATCH 3/3] ARM: dts: amlogic: Add TCU Fernsehfee 3.0

[Martin Blumenstingl]

Thanks for your patch!

On Sun, Mar 23, 2025 at 1:38 PM J. Neuschäfer via B4 Relay
<devnull+j.ne.posteo.net@kernel.org> wrote:
[...]
> +               eth_phy0: ethernet-phy@0 {
> +                       /* IC Plus IP101A (0x02430c54) */
> +                       reg = <0>;
Does reg = <1> also work on your board?
0 is the broadcast address. It's unfortunately something that we still
have incorrect in a lot of .dts files.

[...]
> +&i2c_AO {
> +       status = "okay";
> +       pinctrl-0 = <&i2c_ao_pins>;
> +       pinctrl-names = "default";
> +
> +       pmic@32 {
> +               compatible = "ricoh,rn5t618";
> +               reg = <0x32>;
> +               system-power-controller;
Here I'm a bit surprised:
Aren't some of the outputs used to drive VCCK (CPU power rail) and
VDDEE (everything else power rail, which also powers the GPU)?

[...]
> +&usb1 {
> +       status = "okay";
> +       dr_mode = "host";
> +       /*
> +        * This bus features a Realtek RTL8188 2.4GHz WiFi module, with a
> +        * 3.3V supply voltage that must be enabled before use.
> +        */
> +       vbus-supply = <&wifi_3v3>;
If you want to go for perfection then you can use
Documentation/devicetree/bindings/sound/xmos,xvf3500.yaml as
reference.
It's also an "onboard" USB device which requires toggling a GPIO and regulators.
The driver side is super easy to manage as it's generic (meaning: it
parses any GPIO and regulator as long as the USB ID is registered):
drivers/usb/misc/onboard_usb_dev.c

That way you can just describe the RTL8188 on the USB bus and assign
it's vd33-supply without having to (ab)use vbus-supply of the USB
controller.

[...]
> +               sdxc_c_pins: sdxc-c {
> +                       mux {
> +                               groups = "sdxc_d0_c", "sdxc_d13_c",
> +                                       "sdxc_clk_c", "sdxc_cmd_c",
> +                                       "sdxc_d47_c";
> +                               function = "sdxc_c";
> +                               bias_pull_up;
This has to be bias-pull-up (dashes instead of underscores).


Best regards,
Martin

Re: [PATCH 3/3] ARM: dts: amlogic: Add TCU Fernsehfee 3.0

[J. Neuschäfer]

On Sun, Mar 30, 2025 at 11:10:28PM +0200, Martin Blumenstingl wrote:
> Thanks for your patch!
> 
> On Sun, Mar 23, 2025 at 1:38 PM J. Neuschäfer via B4 Relay
> <devnull+j.ne.posteo.net@kernel.org> wrote:
> [...]
> > +               eth_phy0: ethernet-phy@0 {
> > +                       /* IC Plus IP101A (0x02430c54) */
> > +                       reg = <0>;
> Does reg = <1> also work on your board?
> 0 is the broadcast address. It's unfortunately something that we still
> have incorrect in a lot of .dts files.

Unfortunately not. I tried addresses 1 to 31 without success, which
seems strange; my guess was that the PHY should respond to one of them.
I get this error:

# ip l set eth0 up
[    6.806847] meson6-dwmac c9410000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
[    6.810609] meson6-dwmac c9410000.ethernet eth0: __stmmac_open: Cannot attach to PHY (error: -19)


> 
> [...]
> > +&i2c_AO {
> > +       status = "okay";
> > +       pinctrl-0 = <&i2c_ao_pins>;
> > +       pinctrl-names = "default";
> > +
> > +       pmic@32 {
> > +               compatible = "ricoh,rn5t618";
> > +               reg = <0x32>;
> > +               system-power-controller;
> Here I'm a bit surprised:
> Aren't some of the outputs used to drive VCCK (CPU power rail) and
> VDDEE (everything else power rail, which also powers the GPU)?

Unfortunately I don't have schematics and I wasn't able to trace the
connections on the board because they're so tiny. So it's quite possible that
you're right, but I can't be sure.

Are there voltage sensors in the Meson8 SoC that I could use to establishs the
relation between PMIC outputs and SoC supplies?

> 
> [...]
> > +&usb1 {
> > +       status = "okay";
> > +       dr_mode = "host";
> > +       /*
> > +        * This bus features a Realtek RTL8188 2.4GHz WiFi module, with a
> > +        * 3.3V supply voltage that must be enabled before use.
> > +        */
> > +       vbus-supply = <&wifi_3v3>;
> If you want to go for perfection then you can use
> Documentation/devicetree/bindings/sound/xmos,xvf3500.yaml as
> reference.
> It's also an "onboard" USB device which requires toggling a GPIO and regulators.
> The driver side is super easy to manage as it's generic (meaning: it
> parses any GPIO and regulator as long as the USB ID is registered):
> drivers/usb/misc/onboard_usb_dev.c

I considered using onboard_usb_dev, but then came to the conclusion that
I don't need it because I don't need reset sequencing, only power.

> That way you can just describe the RTL8188 on the USB bus and assign
> it's vd33-supply without having to (ab)use vbus-supply of the USB
> controller.

This does sound reasonable. I'll reconsider the onboard_usb_dev
approach.

> 
> [...]
> > +               sdxc_c_pins: sdxc-c {
> > +                       mux {
> > +                               groups = "sdxc_d0_c", "sdxc_d13_c",
> > +                                       "sdxc_clk_c", "sdxc_cmd_c",
> > +                                       "sdxc_d47_c";
> > +                               function = "sdxc_c";
> > +                               bias_pull_up;
> This has to be bias-pull-up (dashes instead of underscores).

Oh, good catch, I'll fix it.


Thanks for your review,
J. Neuschäfer

Re: [PATCH 3/3] ARM: dts: amlogic: Add TCU Fernsehfee 3.0

[Martin Blumenstingl]

On Tue, Apr 1, 2025 at 3:00 PM J. Neuschäfer <j.ne@posteo.net> wrote:
>
> On Sun, Mar 30, 2025 at 11:10:28PM +0200, Martin Blumenstingl wrote:
> > Thanks for your patch!
> >
> > On Sun, Mar 23, 2025 at 1:38 PM J. Neuschäfer via B4 Relay
> > <devnull+j.ne.posteo.net@kernel.org> wrote:
> > [...]
> > > +               eth_phy0: ethernet-phy@0 {
> > > +                       /* IC Plus IP101A (0x02430c54) */
> > > +                       reg = <0>;
> > Does reg = <1> also work on your board?
> > 0 is the broadcast address. It's unfortunately something that we still
> > have incorrect in a lot of .dts files.
>
> Unfortunately not. I tried addresses 1 to 31 without success, which
> seems strange; my guess was that the PHY should respond to one of them.
> I get this error:
>
> # ip l set eth0 up
> [    6.806847] meson6-dwmac c9410000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
> [    6.810609] meson6-dwmac c9410000.ethernet eth0: __stmmac_open: Cannot attach to PHY (error: -19)
Thanks for testing. Let's keep it at zero then.

> >
> > [...]
> > > +&i2c_AO {
> > > +       status = "okay";
> > > +       pinctrl-0 = <&i2c_ao_pins>;
> > > +       pinctrl-names = "default";
> > > +
> > > +       pmic@32 {
> > > +               compatible = "ricoh,rn5t618";
> > > +               reg = <0x32>;
> > > +               system-power-controller;
> > Here I'm a bit surprised:
> > Aren't some of the outputs used to drive VCCK (CPU power rail) and
> > VDDEE (everything else power rail, which also powers the GPU)?
>
> Unfortunately I don't have schematics and I wasn't able to trace the
> connections on the board because they're so tiny. So it's quite possible that
> you're right, but I can't be sure.
>
> Are there voltage sensors in the Meson8 SoC that I could use to establishs the
> relation between PMIC outputs and SoC supplies?
There aren't any sensors (that I'm aware of). But you can check
/sys/kernel/debug/regulator/regulator_summary and compare the values
with the ones from arch/arm/boot/dts/amlogic/meson8m2-mxiii-plus.dts
Also the vendor u-boot and kernel logs may provide some information.

> >
> > [...]
> > > +&usb1 {
> > > +       status = "okay";
> > > +       dr_mode = "host";
> > > +       /*
> > > +        * This bus features a Realtek RTL8188 2.4GHz WiFi module, with a
> > > +        * 3.3V supply voltage that must be enabled before use.
> > > +        */
> > > +       vbus-supply = <&wifi_3v3>;
> > If you want to go for perfection then you can use
> > Documentation/devicetree/bindings/sound/xmos,xvf3500.yaml as
> > reference.
> > It's also an "onboard" USB device which requires toggling a GPIO and regulators.
> > The driver side is super easy to manage as it's generic (meaning: it
> > parses any GPIO and regulator as long as the USB ID is registered):
> > drivers/usb/misc/onboard_usb_dev.c
>
> I considered using onboard_usb_dev, but then came to the conclusion that
> I don't need it because I don't need reset sequencing, only power.
>
> > That way you can just describe the RTL8188 on the USB bus and assign
> > it's vd33-supply without having to (ab)use vbus-supply of the USB
> > controller.
>
> This does sound reasonable. I'll reconsider the onboard_usb_dev
> approach.
Thank you for the onboard usb device patches (for those who are curious: [0])!


[0] https://lore.kernel.org/lkml/20250403-rtl-onboard-v1-0-10ca9a6a4ee0@posteo.net/

Re: [PATCH 3/3] ARM: dts: amlogic: Add TCU Fernsehfee 3.0

[J. Neuschäfer]

On Sun, Apr 06, 2025 at 10:36:18PM +0200, Martin Blumenstingl wrote:
> On Tue, Apr 1, 2025 at 3:00 PM J. Neuschäfer <j.ne@posteo.net> wrote:
> >
> > On Sun, Mar 30, 2025 at 11:10:28PM +0200, Martin Blumenstingl wrote:
> > > Thanks for your patch!
> > >
> > > On Sun, Mar 23, 2025 at 1:38 PM J. Neuschäfer via B4 Relay
> > > <devnull+j.ne.posteo.net@kernel.org> wrote:
> > > [...]
> > > > +               eth_phy0: ethernet-phy@0 {
> > > > +                       /* IC Plus IP101A (0x02430c54) */
> > > > +                       reg = <0>;
> > > Does reg = <1> also work on your board?
> > > 0 is the broadcast address. It's unfortunately something that we still
> > > have incorrect in a lot of .dts files.
> >
> > Unfortunately not. I tried addresses 1 to 31 without success, which
> > seems strange; my guess was that the PHY should respond to one of them.
> > I get this error:
> >
> > # ip l set eth0 up
> > [    6.806847] meson6-dwmac c9410000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
> > [    6.810609] meson6-dwmac c9410000.ethernet eth0: __stmmac_open: Cannot attach to PHY (error: -19)
> Thanks for testing. Let's keep it at zero then.
> 
> > >
> > > [...]
> > > > +&i2c_AO {
> > > > +       status = "okay";
> > > > +       pinctrl-0 = <&i2c_ao_pins>;
> > > > +       pinctrl-names = "default";
> > > > +
> > > > +       pmic@32 {
> > > > +               compatible = "ricoh,rn5t618";
> > > > +               reg = <0x32>;
> > > > +               system-power-controller;
> > > Here I'm a bit surprised:
> > > Aren't some of the outputs used to drive VCCK (CPU power rail) and
> > > VDDEE (everything else power rail, which also powers the GPU)?
> >
> > Unfortunately I don't have schematics and I wasn't able to trace the
> > connections on the board because they're so tiny. So it's quite possible that
> > you're right, but I can't be sure.
> >
> > Are there voltage sensors in the Meson8 SoC that I could use to establishs the
> > relation between PMIC outputs and SoC supplies?
>
> There aren't any sensors (that I'm aware of). But you can check
> /sys/kernel/debug/regulator/regulator_summary and compare the values
> with the ones from arch/arm/boot/dts/amlogic/meson8m2-mxiii-plus.dts
> Also the vendor u-boot and kernel logs may provide some information.

The values in /sys/kernel/debug/regulator/regulator_summary do indeed
match the values in meson8m2-mxiii-plus.dts:

 DCDC1                            0    0      0 unknown  1100mV     0mA     0mV     0mV
 DCDC2                            0    0      0 unknown  1150mV     0mA     0mV     0mV
 DCDC3                            0    0      0 unknown  1500mV     0mA     0mV     0mV
 LDO1                             0    0      0 unknown  2900mV     0mA     0mV     0mV
 LDO2                             0    0      0 unknown  1800mV     0mA     0mV     0mV
 LDO3                             0    0      0 unknown  1800mV     0mA     0mV     0mV
 LDO4                             0    0      0 unknown  2850mV     0mA     0mV     0mV
 LDO5                             0    0      0 unknown  1800mV     0mA     0mV     0mV
 LDORTC1                          0    0      0 unknown  2700mV     0mA     0mV     0mV
 LDORTC2                          0    0      0 unknown   900mV     0mA     0mV     0mV

After I copy the regulator table from meson8m2-mxiii-plus.dts, I can indeed
observe the effect of regulators being on/off. I will use that to further
investigate how the regulators are used.

The vendor u-boot/kernel aren't very useful, unfortunately.
The downstream devicetree includes these settings:

	rn5t618 {
		status = "okay";
		ddr_voltage   = <1500000>; // 1.5V
		vddao_voltage = <1200000>; // 1.2V
		[...]
	};

The corresponding driver seems to associate ddr_voltage with DCDC2 and
vddio_voltage with DCDC3, although this part of the code[1] is "#if 0"'d.

[1] https://github.com/endlessm/linux-meson/blob/master/drivers/amlogic/power/ricoh/ricoh_pmu.c#L127


Best regards,
J. Neuschäfer

Re: [PATCH 0/3] Board support for Fernsehfee 3.0

[Neil Armstrong]

Hi,

On Sun, 23 Mar 2025 13:37:49 +0100, J. Neuschäfer wrote:
> Fernsehfee[1] ("TV fairy") is a family of set-top boxes marketed as
> ad-blocking appliances. This patchset adds board support in the form of
> a device tree for the third generation, Fernsehfee 3.0.
> 
> [1]: https://fernsehfee.de/ (German), https://www.telefairy.com/ (English)
> 
> 
> [...]

Thanks, Applied to https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git (v6.16/arm-dt)

[1/3] dt-bindings: vendor-prefixes: Add TC Unterhaltungselektronik AG
      https://git.kernel.org/amlogic/c/40f983aa2d809b4934a260c76b82e9ff19c09a88
[2/3] dt-bindings: arm: amlogic: Add TCU Fernsehfee 3.0 board
      https://git.kernel.org/amlogic/c/eb7af1268e0042e83607918229cd62c3669cdcb8
[3/3] ARM: dts: amlogic: Add TCU Fernsehfee 3.0
      https://git.kernel.org/amlogic/c/dac928757928a8ea06eaf5694d5deae53a21616f

These changes has been applied on the intermediate git tree [1].

The v6.16/arm-dt branch will then be sent via a formal Pull Request to the Linux SoC maintainers
for inclusion in their intermediate git branches in order to be sent to Linus during
the next merge window, or sooner if it's a set of fixes.

In the cases of fixes, those will be merged in the current release candidate
kernel and as soon they appear on the Linux master branch they will be
backported to the previous Stable and Long-Stable kernels [2].

The intermediate git branches are merged daily in the linux-next tree [3],
people are encouraged testing these pre-release kernels and report issues on the
relevant mailing-lists.

If problems are discovered on those changes, please submit a signed-off-by revert
patch followed by a corrective changeset.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
[3] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git

-- 
Neil