linux-kernel - Re: [PATCH 3/3] arm64: dts: ti: Add DT overlay for PCIe + USB3.0 SERDES personality card

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Message-ID: <f0a05e0f-a40b-425d-883f-f3222f323dcd@ti.com>
Date: Thu, 8 Feb 2024 09:54:05 +0530
From: Vignesh Raghavendra <vigneshr@...com>
To: Roger Quadros <rogerq@...nel.org>, <nm@...com>
CC: <afd@...com>, <a-bhatia1@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <srk@...com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        "Kishon Vijay
 Abraham I" <kishon@...com>
Subject: Re: [PATCH 3/3] arm64: dts: ti: Add DT overlay for PCIe + USB3.0
 SERDES personality card



On 06/02/24 19:06, Roger Quadros wrote:
> 
> 
> On 05/02/2024 16:46, Vignesh Raghavendra wrote:
>>
>>
>> On 26/01/24 17:15, Roger Quadros wrote:
>>> From: Kishon Vijay Abraham I <kishon@...com>
>>>
>>
>> [...]
>>
>>>  # Boards with J7200 SoC
>>>  k3-j7200-evm-dtbs := k3-j7200-common-proc-board.dtb k3-j7200-evm-quad-port-eth-exp.dtbo
>>> diff --git a/arch/arm64/boot/dts/ti/k3-am654-pcie-usb3.dtso b/arch/arm64/boot/dts/ti/k3-am654-pcie-usb3.dtso
>>> new file mode 100644
>>> index 000000000000..c63b7241c005
>>> --- /dev/null
>>> +++ b/arch/arm64/boot/dts/ti/k3-am654-pcie-usb3.dtso
>>> @@ -0,0 +1,67 @@
>>> +// SPDX-License-Identifier: GPL-2.0-only OR MIT
>>> +/**
>>> + * DT overlay for SERDES personality card: 1lane PCIe + USB3.0 DRD on AM654 EVM
>>> + *
>>> + * Copyright (C) 2018-2024 Texas Instruments Incorporated - http://www.ti.com/
>>> + */
>>> +
>>> +/dts-v1/;
>>> +/plugin/;
>>> +#include <dt-bindings/gpio/gpio.h>
>>> +#include <dt-bindings/phy/phy.h>
>>> +#include <dt-bindings/phy/phy-am654-serdes.h>
>>> +
>>> +#include "k3-pinctrl.h"
>>> +
>>> +&serdes1 {
>>> +	status = "okay";
>>> +};
>>> +
>>> +&pcie1_rc {
>>> +	num-lanes = <1>;
>>> +	phys = <&serdes1 PHY_TYPE_PCIE 0>;
>>> +	phy-names = "pcie-phy0";
>>> +	reset-gpios = <&pca9555 5 GPIO_ACTIVE_HIGH>;
>>> +	status = "okay";
>>> +};
>>> +
>>> +&pcie1_ep {
>>> +	num-lanes = <1>;
>>> +	phys = <&serdes1 PHY_TYPE_PCIE 0>;
>>> +	phy-names = "pcie-phy0";
>>> +};
>>> +
>>> +&main_pmx0 {
>>> +	usb0_pins_default: usb0_pins_default {
>>
>> No underscores in node-name and also should end with -pins
>>
>>> +		pinctrl-single,pins = <
>>> +			AM65X_IOPAD(0x02bc, PIN_OUTPUT, 0) /* (AD9) USB0_DRVVBUS */
>>> +		>;
>>> +	};
>>> +};
>>> +
>>> +&serdes0 {
>>> +	status = "okay";
>>> +	assigned-clocks = <&k3_clks 153 4>, <&serdes0 AM654_SERDES_CMU_REFCLK>;
>>> +	assigned-clock-parents = <&k3_clks 153 7>, <&k3_clks 153 4>;
>>> +};
>>> +
>>> +&dwc3_0 {
>>> +	status = "okay";
>>> +	assigned-clock-parents = <&k3_clks 151 4>,      /* set REF_CLK to 20MHz i.e. PER0_PLL/48 */
>>> +	<&k3_clks 151 8>;      /* set PIPE3_TXB_CLK to WIZ8B2M4VSB */
>>> +	phys = <&serdes0 PHY_TYPE_USB3 0>;
>>> +	phy-names = "usb3-phy";
>>> +};
>>> +
>>> +&usb0 {
>>> +	pinctrl-names = "default";
>>> +	pinctrl-0 = <&usb0_pins_default>;
>>> +	dr_mode = "host";
>>> +	maximum-speed = "super-speed";
>>> +	snps,dis-u1-entry-quirk;
>>> +	snps,dis-u2-entry-quirk;
>>> +};
>>> +
>>> +&usb0_phy {
>>> +	status = "okay";
>>> +};
>>
>>
>> BTW, this breaks build on 6.8-rc1
>>
>>
>>   DTOVL   arch/arm64/boot/dts/ti/k3-am654-gp-evm.dtb
>>
>> Failed to apply 'arch/arm64/boot/dts/ti/k3-am654-pcie-usb3.dtbo': FDT_ERR_NOTFOUND
>>
>>
> 
> It builds fine for me. Did the 3rd patch apply cleanly for you?
> 


Yes, build failure is due to the fact that I picked up Andrew's patch to
remove pcie_ep node. Could you please respin this on top of ti-next /
linux-next?

--
Regards
Vignesh