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From: Neil Armstrong <narmstrong@baylibre.com>
To: Anand Moon <linux.amoon@gmail.com>,
	linux-phy@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org
Cc: Matt Corallo <oc2udbzfd@mattcorallo.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Kevin Hilman <khilman@baylibre.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Kishon Vijay Abraham I <kishon@ti.com>,
	Vinod Koul <vkoul@kernel.org>,
	Emiliano Ingrassia <ingrassia@epigenesys.com>,
	Brian Kim <brian.kim@hardkernel.com>
Subject: Re: [PATCHv3 1/6] ARM: dts: meson8b: odroidc1: Add usb phy power node
Date: Mon, 30 Aug 2021 09:45:26 +0200	[thread overview]
Message-ID: <c7f6213b-5ddc-881c-1aea-9cc7b03e6a4f@baylibre.com> (raw)
In-Reply-To: <20210817041548.1276-2-linux.amoon@gmail.com>

Hi,

On 17/08/2021 06:15, Anand Moon wrote:
> Add missing usb phy power node for usb node fix below warning.
> P5V0 regulator supply input voltage range to USB host controller.
> As described in the C1+ schematics, GPIO GPIOAO_5 is used to
> enable input power to USB ports, set it to Active Low.
> 
> [    1.260772] dwc2 c90c0000.usb: Looking up vbus-supply from device tree
> [    1.260784] dwc2 c90c0000.usb: Looking up vbus-supply property in
> 		mode /soc/usb@c90c0000 failed

First of all, DT is not here to fix boot message.

Secondly, if the vbus-supply is optional, the message should be removed from
the driver/regulator core instead.

Finally, I looked at the Odroid-C1 schematics and the GPIOAO.BIT5 is an input
to the S805, and the PWREN signal is controlled by the USB Hub so this regulator
should not be added at all.

Neil

> 
> Fixes: 2eb79a4d15ff (ARM: dts: meson: enabling the USB Host
> 		controller on Odroid-C1/C1+ board)
> 
> Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
> Signed-off-by: Anand Moon <linux.amoon@gmail.com>
> ---
> V2 > changes gpio polarity ACTIVE_HIGH to ACTIVE_LOW.
>      Fix the source power from phy-supply to vbus-supply.
> 
> [1] https://lore.kernel.org/linux-devicetree/20210716103651.1455-2-linux.amoon@gmail.com/
> 
> V1 > Fix the Input GPIO polarity from HIGH to LOW.
> 
> previous version
> [0] https://patchwork.kernel.org/project/linux-amlogic/patch/20190113181808.5768-1-linux.amoon@gmail.com
> 
> changes fix the vbus-suppy to phy-supply, drop enable usb0
> 
>     USB_PWR                       2    1      0 unknown  5000mV     0mA  5000mV  5000mV
>        phy-c1108820.phy.0-phy     2                                 0mA     0mV     0mV
> ---
>  arch/arm/boot/dts/meson8b-odroidc1.dts | 19 ++++++++++++++++++-
>  1 file changed, 18 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
> index c440ef94e082..30ec6a7f20c7 100644
> --- a/arch/arm/boot/dts/meson8b-odroidc1.dts
> +++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
> @@ -32,6 +32,23 @@ emmc_pwrseq: emmc-pwrseq {
>  		reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
>  	};
>  
> +	usb_pwr_en: regulator-usb-pwr-en {
> +		compatible = "regulator-fixed";
> +
> +		regulator-name = "USB_OTG_PWR";
> +
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		/*
> +		 * signal name from schematics: USB_POWER - P5V0
> +		 */
> +		vin-supply = <&p5v0>;
> +		/*
> +		 * signal name from schematics: PWREN - GPIOAO.BIT5
> +		 */
> +		gpios = <&gpio_ao GPIOAO_5 GPIO_ACTIVE_LOW>;
> +	};
> +
>  	leds {
>  		compatible = "gpio-leds";
>  		blue {
> @@ -119,7 +136,6 @@ vcc_3v3: regulator-vcc-3v3 {
>  		regulator-name = "VCC3V3";
>  		regulator-min-microvolt = <3300000>;
>  		regulator-max-microvolt = <3300000>;
> -
>  		vin-supply = <&p5v0>;

As martin said, only a single functional change per patch please, this line removal should go in another patch.

>  	};
>  
> @@ -382,4 +398,5 @@ &usb1_phy {
>  
>  &usb1 {
>  	status = "okay";
> +	vbus-supply = <&usb_pwr_en>;
>  };
> 


  parent reply	other threads:[~2021-08-30  7:45 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-17  4:15 [PATCHv3 0/6] Meson-8b and Meson-gxbb Fix some missing code Anand Moon
2021-08-17  4:15 ` [PATCHv3 1/6] ARM: dts: meson8b: odroidc1: Add usb phy power node Anand Moon
2021-08-28 15:53   ` Martin Blumenstingl
2021-08-30  7:45   ` Neil Armstrong [this message]
2021-08-30 19:37     ` Martin Blumenstingl
2021-08-31 14:50       ` Neil Armstrong
2021-08-31 20:47         ` Anand Moon
2021-09-20 19:26           ` Martin Blumenstingl
2021-09-25 17:41             ` Anand Moon
2021-08-17  4:15 ` [PATCHv3 2/6] ARM: dts: meson8b: odroidc1: Set usb power source to always on Anand Moon
2021-08-28 15:56   ` Martin Blumenstingl
2021-08-17  4:15 ` [PATCHv3 3/6] arm64: dts: amlogic: odroidc2: Fix the chip enable signal for usb power Anand Moon
2021-08-28 16:00   ` Martin Blumenstingl
2021-08-17  4:15 ` [PATCHv3 4/6] arm64: dts: amlogic: odroidc2: use vbus-supply for power source for usb nodes Anand Moon
2021-08-28 16:06   ` Martin Blumenstingl
2021-08-17  4:15 ` [PATCHv3 5/6] phy: amlogic: meson8b-usb2: Power off the PHY by putting it into reset mode Anand Moon
2021-08-17 10:30   ` Vinod Koul
2021-08-17  4:15 ` [PATCHv3 6/6] phy: amlogic: meson8b-usb2: don't log an error on -EPROBE_DEFER Anand Moon
2021-08-17 10:31   ` Vinod Koul

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