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Date: Fri, 28 Oct 2022 10:33:03 +0100
From: Jon Hunter <jonathanh@...dia.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Wayne Chang <waynec@...dia.com>, gregkh@...uxfoundation.org,
robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
treding@...dia.com, thierry.reding@...il.com,
heikki.krogerus@...ux.intel.com, ajayg@...dia.com, kishon@...com,
vkoul@...nel.org, p.zabel@...gutronix.de, balbi@...nel.org,
mathias.nyman@...el.com, jckuo@...dia.com
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, singhanc@...dia.com,
linux-i2c@...r.kernel.org, linux-phy@...ts.infradead.org,
linux-tegra@...r.kernel.org
Subject: Re: [PATCH 04/11] arm64: tegra: Enable XUSB host and device on Jetson
AGX Orin
On 28/10/2022 03:23, Krzysztof Kozlowski wrote:
> On 24/10/2022 03:41, Wayne Chang wrote:
>> This commit enables XUSB host, device, and pad controller on
>> Jetson AGX Orin.
>>
>> Signed-off-by: Wayne Chang <waynec@...dia.com>
>> ---
>> .../boot/dts/nvidia/tegra234-p3701-0000.dtsi | 48 +++++
>> .../nvidia/tegra234-p3737-0000+p3701-0000.dts | 184 ++++++++++++++++++
>> arch/arm64/boot/dts/nvidia/tegra234.dtsi | 170 ++++++++++++++++
>> 3 files changed, 402 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
>> index 9e4d72cfa69f..8acef87a5398 100644
>> --- a/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
>> +++ b/arch/arm64/boot/dts/nvidia/tegra234-p3701-0000.dtsi
>> @@ -61,6 +61,29 @@ mmc@...0000 {
>> non-removable;
>> };
>>
>> + padctl@...0000 {
>> + vclamp-usb-supply = <&vdd_ao_1v8>;
>> + avdd-usb-supply = <&vdd_ao_3v3>;
>> +
>> + ports {
>> + usb2-0 {
>> + vbus-supply = <&vdd_5v0_sys>;
>> + };
>> +
>> + usb2-1 {
>> + vbus-supply = <&vdd_5v0_sys>;
>> + };
>> +
>> + usb2-2 {
>> + vbus-supply = <&vdd_5v0_sys>;
>> + };
>> +
>> + usb2-3 {
>> + vbus-supply = <&vdd_5v0_sys>;
>> + };
>> + };
>> + };
>> +
>> rtc@...0000 {
>> status = "okay";
>> };
>> @@ -69,4 +92,29 @@ pmc@...0000 {
>> nvidia,invert-interrupt;
>> };
>> };
>> +
>> + vdd_5v0_sys: regulator@0 {
>> + compatible = "regulator-fixed";
>> + regulator-name = "VIN_SYS_5V0";
>> + regulator-min-microvolt = <5000000>;
>> + regulator-max-microvolt = <5000000>;
>> + regulator-always-on;
>> + regulator-boot-on;
>> + };
>> +
>> + vdd_ao_1v8: regulator@1 {
>> + compatible = "regulator-fixed";
>> + regulator-name = "vdd-AO-1v8";
>> + regulator-min-microvolt = <1800000>;
>> + regulator-max-microvolt = <1800000>;
>> + regulator-always-on;
>> + };
>> +
>> + vdd_ao_3v3: regulator@2 {
>> + compatible = "regulator-fixed";
>> + regulator-name = "vdd-AO-3v3";
>> + regulator-min-microvolt = <3300000>;
>> + regulator-max-microvolt = <3300000>;
>> + regulator-always-on;
>> + };
>> };
>> diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
>> index 57ab75328814..b4630280bb32 100644
>> --- a/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
>> +++ b/arch/arm64/boot/dts/nvidia/tegra234-p3737-0000+p3701-0000.dts
>> @@ -2011,6 +2011,190 @@ hda@...0000 {
>> nvidia,model = "NVIDIA Jetson AGX Orin HDA";
>> status = "okay";
>> };
>> +
>> + padctl@...0000 {
>> + status = "okay";
>> +
>> + pads {
>> + usb2 {
>> + lanes {
>> + usb2-0 {
>> + status = "okay";
>> + };
>> +
>> + usb2-1 {
>> + status = "okay";
>> + };
>> +
>> + usb2-2 {
>> + status = "okay";
>> + };
>> +
>> + usb2-3 {
>> + status = "okay";
>> + };
>> + };
>> + };
>> +
>> + usb3 {
>> + lanes {
>> + usb3-0 {
>> + status = "okay";
>> + };
>> +
>> + usb3-1 {
>> + status = "okay";
>> + };
>> +
>> + usb3-2 {
>> + status = "okay";
>> + };
>> + };
>> + };
>> + };
>> +
>> + ports {
>> + usb2-0 {
>> + mode = "otg";
>> + usb-role-switch;
>> + status = "okay";
>> + port {
>> + hs_typec_p1: endpoint {
>> + remote-endpoint = <&hs_ucsi_ccg_p1>;
>> + };
>> + };
>> + };
>> +
>> + usb2-1 {
>> + mode = "host";
>> + status = "okay";
>> + port {
>> + hs_typec_p0: endpoint {
>> + remote-endpoint = <&hs_ucsi_ccg_p0>;
>> + };
>> + };
>> + };
>> +
>> + usb2-2 {
>> + mode = "host";
>> + status = "okay";
>> + };
>> +
>> + usb2-3 {
>> + mode = "host";
>> + status = "okay";
>> + };
>> +
>> + usb3-0 {
>> + nvidia,usb2-companion = <1>;
>> + status = "okay";
>> + port {
>> + ss_typec_p0: endpoint {
>> + remote-endpoint = <&ss_ucsi_ccg_p0>;
>> + };
>> + };
>> + };
>> +
>> + usb3-1 {
>> + nvidia,usb2-companion = <0>;
>> + status = "okay";
>> + port {
>> + ss_typec_p1: endpoint {
>> + remote-endpoint = <&ss_ucsi_ccg_p1>;
>> + };
>> + };
>> + };
>> +
>> + usb3-2 {
>> + nvidia,usb2-companion = <3>;
>> + status = "okay";
>> + };
>> + };
>> + };
>> +
>> + usb@...0000 {
>> + status = "okay";
>> +
>> + phys = <&{/bus@...adctl@...0000/pads/usb2/lanes/usb2-0}>,
>> + <&{/bus@...adctl@...0000/pads/usb3/lanes/usb3-1}>;
>> + phy-names = "usb2-0", "usb3-1";
>> + };
>> +
>> + usb@...0000 {
>> + status = "okay";
>> +
>> + phys = <&{/bus@...adctl@...0000/pads/usb2/lanes/usb2-0}>,
>> + <&{/bus@...adctl@...0000/pads/usb2/lanes/usb2-1}>,
>> + <&{/bus@...adctl@...0000/pads/usb2/lanes/usb2-2}>,
>> + <&{/bus@...adctl@...0000/pads/usb2/lanes/usb2-3}>,
>> + <&{/bus@...adctl@...0000/pads/usb3/lanes/usb3-0}>,
>> + <&{/bus@...adctl@...0000/pads/usb3/lanes/usb3-1}>,
>> + <&{/bus@...adctl@...0000/pads/usb3/lanes/usb3-2}>;
>> + phy-names = "usb2-0", "usb2-1", "usb2-2", "usb2-3",
>> + "usb3-0", "usb3-1", "usb3-2";
>> + };
>> +
>> + i2c@...0000 {
>> + status = "okay";
>> + ucsi_ccg: ucsi_ccg@8 {
>
> No underscores in node names.
>
>> + compatible = "cypress,cypd4226";
>> + cypress,firmware-build = "gn";
>> + interrupt-parent = <&gpio>;
>> + interrupts = <TEGRA234_MAIN_GPIO(Y, 4) IRQ_TYPE_LEVEL_LOW>;
>> + reg = <0x08>;
>> + status = "okay";
>
> The pattern of redefining full path in Tegra is confusing - I have no
> clue which of these status=okay are correct which are redundant.
>
> Do you?
I understand you may not like this approach, however, this comment is
not really relevant to just this patch, but a general comment. But yes
we will ensure that this is correct.
>
>
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + ccg_typec_con0: connector@0 {
>> + compatible = "usb-c-connector";
>> + reg = <0>;
>> + label = "USB-C";
>> + data-role = "host";
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + port@0 {
>> + reg = <0>;
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>
> Hm, why do you have here cells?
>
> Did you test the DTS with dtbs_check?
That does not look correct and so we will correct.
Thanks!
Jon
--
nvpublic
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