Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 as permitted sender) client-ip=2620:137:e000::3:4;
Message-ID: <9fe7d0d2-3582-4b62-be9b-aa9134c18023@linaro.org>
Date:   Tue, 10 Oct 2023 10:10:55 +0200
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
From:   Neil Armstrong <neil.armstrong@linaro.org>
Reply-To: neil.armstrong@linaro.org
Subject: Re: [PATCH v1] arm64: dts: amlogic: Used onboard usb hub reset on
 odroid n2
To:     Anand Moon <linux.amoon@gmail.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Kevin Hilman <khilman@baylibre.com>,
        Jerome Brunet <jbrunet@baylibre.com>,
        Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc:     devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org
References: <20231010032446.3194-1-linux.amoon@gmail.com>
Content-Language: en-US, fr
Autocrypt: addr=neil.armstrong@linaro.org; keydata=
 xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP
 GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4
 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9
 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik
 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB
 AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA
 OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk
 Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04
 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ
 GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw
 UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa
 GzJmiVclkPc2BY592IGBXRDQ38urXeM4nfhhvqA50b/nAEXc6FzqgXqDkEIwR66/Gbp0t3+r
 yQzpKRyQif3OwE0ETVkGzwEIALyKDN/OGURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYp
 QTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXMcoJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+
 SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hiSvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY
 4yG6xI99NIPEVE9lNBXBKIlewIyVlkOaYvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoM
 Mtsyw18YoX9BqMFInxqYQQ3j/HpVgTSvmo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUX
 oUk33HEAEQEAAcLAXwQYAQIACQUCTVkGzwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfn
 M7IbRuiSZS1unlySUVYu3SD6YBYnNi3G5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa3
 3eDIHu/zr1HMKErm+2SD6PO9umRef8V82o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCS
 KmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy
 4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJC3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTT
 QbM0WUIBIcGmq38+OgUsMYu4NzLu7uZFAcmp6h8g
Organization: Linaro Developer Services
In-Reply-To: <20231010032446.3194-1-linux.amoon@gmail.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk

Hi,

On 10/10/2023 05:24, Anand Moon wrote:
> On Odroid n2/n2+ previously use gpio-hog to reset the usb hub,
> switch to used on-board usb hub reset to enable the usb hub
> and enable power to hub.
> 
> Signed-off-by: Anand Moon <linux.amoon@gmail.com>
> ---
>   .../dts/amlogic/meson-g12b-odroid-n2.dtsi     | 36 ++++++++++++-------
>   1 file changed, 24 insertions(+), 12 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
> index 91c9769fda20..9e671444eca6 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
> @@ -31,6 +31,30 @@ hub_5v: regulator-hub_5v {
>   		enable-active-high;
>   	};
>   
> +	/* USB hub supports both USB 2.0 and USB 3.0 root hub */
> +	usb-hub {
> +		dr_mode = "host";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		/* 2.0 hub on port 1 */
> +		hub_2_0: hub@1 {
> +			compatible = "usb5e3,610";
> +			reg = <1>;
> +			peer-hub = <&hub_3_0>;

It seems peer-hub is missing from Documentation/devicetree/bindings/usb/genesys,gl850g.yaml, could you add it ?

Thanks,
Neil

> +			vdd-supply = <&usb_pwr_en>;
> +		};
> +
> +		/* 3.0 hub on port 4 */
> +		hub_3_0: hub@2 {
> +			compatible = "usb5e3,620";
> +			reg = <2>;
> +			peer-hub = <&hub_2_0>;
> +			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;
> +			vdd-supply = <&vcc_5v>;
> +		};
> +	};
> +
>   	sound {
>   		compatible = "amlogic,axg-sound-card";
>   		model = "ODROID-N2";
> @@ -234,18 +258,6 @@ &gpio {
>   		"PIN_3",  /* GPIOX_17 */
>   		"PIN_5",  /* GPIOX_18 */
>   		"PIN_36"; /* GPIOX_19 */
> -	/*
> -	 * WARNING: The USB Hub on the Odroid-N2 needs a reset signal
> -	 * to be turned high in order to be detected by the USB Controller
> -	 * This signal should be handled by a USB specific power sequence
> -	 * in order to reset the Hub when USB bus is powered down.
> -	 */
> -	usb-hub-hog {
> -		gpio-hog;
> -		gpios = <GPIOH_4 GPIO_ACTIVE_HIGH>;
> -		output-high;
> -		line-name = "usb-hub-reset";
> -	};
>   };
>   
>   &i2c3 {