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

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Date: Tue, 6 Feb 2024 15:36:16 +0200
From: Roger Quadros <rogerq@...nel.org>
To: Vignesh Raghavendra <vigneshr@...com>, 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 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?

-- 
cheers,
-roger