Re: [PATCH v3 3/7] arm64: dts: ti: k3-j722s-evm: Update USB0 and USB1

[Roger Quadros <rogerq@kernel.org>]

On 24/05/2024 12:05, Siddharth Vadapalli wrote:
> From: Ravi Gunasekaran <r-gunasekaran@ti.com>
> 
> The GPIO expander on the EVM allows the USB selection for Type-C
> port to either USB0 or USB1 via USB hub. By default, let the Type-C
> port select USB0 via the GPIO expander port P05.
> 
> Enable super-speed on USB1 by updating SerDes0 lane configuration.
> 
> Signed-off-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
> Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
> ---
> v2:
> https://lore.kernel.org/r/20240513114443.16350-4-r-gunasekaran@ti.com/
> Changes since v2:
> - Renamed serdes0_ln_ctrl to serdes_ln_ctrl corresponding to the change
>   made in patch 1.
> - Dropped Serdes1 idle-states since it has not yet been added in the
>   serdes_ln_ctrl node.
> - Dropped Serdes1 specific Lane-Muxing macros in "k3-serdes.h".
> - Added newline after /* J722S */ in "k3-serdes.h" following the file
>   convention.
> 
> v1:
> https://lore.kernel.org/r/20240429120932.11456-4-r-gunasekaran@ti.com/
> Changes since v1:
> - Removed USB aliases, line-name property for p05 GPIO hog.
> - Included k3-j722s-main.dtsi.
> 
>  arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 54 +++++++++++++++++++++++++
>  arch/arm64/boot/dts/ti/k3-j722s.dtsi    |  5 +++
>  arch/arm64/boot/dts/ti/k3-serdes.h      |  5 +++
>  3 files changed, 64 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
> index bf3c246d13d1..a3bda39cc223 100644
> --- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
> @@ -9,7 +9,9 @@
>  /dts-v1/;
>  
>  #include <dt-bindings/net/ti-dp83867.h>
> +#include <dt-bindings/phy/phy.h>
>  #include "k3-j722s.dtsi"
> +#include "k3-serdes.h"
>  
>  / {
>  	compatible = "ti,j722s-evm", "ti,j722s";
> @@ -202,6 +204,12 @@ J722S_IOPAD(0x0130, PIN_OUTPUT, 0) /* (AG26) RGMII1_TXC */
>  			J722S_IOPAD(0x012c, PIN_OUTPUT, 0) /* (AF25) RGMII1_TX_CTL */
>  		>;
>  	};
> +
> +	main_usb1_pins_default: main-usb1-default-pins {
> +		pinctrl-single,pins = <
> +			J722S_IOPAD(0x0258, PIN_INPUT, 0) /* (B27) USB1_DRVVBUS */
> +		>;
> +	};
>  };
>  
>  &cpsw3g {
> @@ -301,6 +309,13 @@ exp1: gpio@23 {
>  				  "PCIe0_1L_RC_RSTz", "PCIe0_1L_PRSNT#",
>  				  "ENET1_EXP_SPARE2", "ENET1_EXP_PWRDN",
>  				  "PD_I2ENET1_I2CMUX_SELC_IRQ", "ENET1_EXP_RESETZ";
> +
> +		p05-hog {
> +			/* P05 - USB2.0_MUX_SEL */
> +			gpio-hog;
> +			gpios = <5 GPIO_ACTIVE_LOW>;
> +			output-high;
> +		};
>  	};
>  };
>  
> @@ -384,3 +399,42 @@ &sdhci1 {
>  	status = "okay";
>  	bootph-all;
>  };
> +
> +&serdes_ln_ctrl {
> +	idle-states = <J722S_SERDES0_LANE0_USB>;
> +};
> +
> +&serdes0 {
> +	status = "okay";
> +	serdes0_usb_link: phy@0 {
> +		reg = <0>;
> +		cdns,num-lanes = <1>;
> +		#phy-cells = <0>;
> +		cdns,phy-type = <PHY_TYPE_USB3>;
> +		resets = <&serdes_wiz0 1>;
> +	};
> +};
> +
> +&usbss0 {
> +	ti,vbus-divider;
> +	status = "okay";
> +};
> +
> +&usb0 {
> +	dr_mode = "otg";
> +	usb-role-switch;
> +};
> +
> +&usbss1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&main_usb1_pins_default>;
> +	ti,vbus-divider;
> +	status = "okay";
> +};
> +
> +&usb1 {
> +	dr_mode = "host";
> +	maximum-speed = "super-speed";
> +	phys = <&serdes0_usb_link>;
> +	phy-names = "cdns3,usb3-phy";
> +};
> diff --git a/arch/arm64/boot/dts/ti/k3-j722s.dtsi b/arch/arm64/boot/dts/ti/k3-j722s.dtsi
> index c75744edb143..61b64fae1bf4 100644
> --- a/arch/arm64/boot/dts/ti/k3-j722s.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j722s.dtsi
> @@ -87,3 +87,8 @@ &oc_sram {
>  	reg = <0x00 0x70000000 0x00 0x40000>;
>  	ranges = <0x00 0x00 0x70000000 0x40000>;
>  };
> +
> +/* Include bus peripherals that are additionally
> + * present in J722S
> + */
> + #include "k3-j722s-main.dtsi"
> diff --git a/arch/arm64/boot/dts/ti/k3-serdes.h b/arch/arm64/boot/dts/ti/k3-serdes.h

The k3-serdes.h changes should be in a separate independent patch.

> index a011ad893b44..e6a036a4e70b 100644
> --- a/arch/arm64/boot/dts/ti/k3-serdes.h
> +++ b/arch/arm64/boot/dts/ti/k3-serdes.h
> @@ -201,4 +201,9 @@
>  #define J784S4_SERDES4_LANE3_USB		0x2
>  #define J784S4_SERDES4_LANE3_IP4_UNUSED		0x3
>  
> +/* J722S */
> +
> +#define J722S_SERDES0_LANE0_USB			0x0
> +#define J722S_SERDES0_LANE0_QSGMII_LANE2	0x1
> +
>  #endif /* DTS_ARM64_TI_K3_SERDES_H */

-- 
cheers,
-roger

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