linux-kernel - Re: [PATCH 2/2] usb: dwc3: exynos: add support for Google Tensor gs101

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Date: Wed, 24 Apr 2024 22:43:28 +0000
From: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
To: André Draszik <andre.draszik@...aro.org>
CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Peter Griffin <peter.griffin@...aro.org>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Tudor Ambarus <tudor.ambarus@...aro.org>,
        Will McVicker <willmcvicker@...gle.com>, Roy Luo <royluo@...gle.com>,
        "kernel-team@...roid.com" <kernel-team@...roid.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
        "linux-samsung-soc@...r.kernel.org" <linux-samsung-soc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] usb: dwc3: exynos: add support for Google Tensor
 gs101

On Tue, Apr 23, 2024, André Draszik wrote:
> The Exynos-based Google Tensor gs101 SoC has a DWC3 compatible USB
> controller and can reuse the existing Exynos glue. Add the
> google,gs101-dwusb3 compatible and associated driver data. Four clocks
> are required for USB for this SoC:
>     * bus clock
>     * suspend clock
>     * Link interface AXI clock
>     * Link interface APB clock
> 
> Signed-off-by: André Draszik <andre.draszik@...aro.org>
> ---
>  drivers/usb/dwc3/dwc3-exynos.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
> index 3427522a7c6a..9a6e988d165a 100644
> --- a/drivers/usb/dwc3/dwc3-exynos.c
> +++ b/drivers/usb/dwc3/dwc3-exynos.c
> @@ -169,6 +169,12 @@ static const struct dwc3_exynos_driverdata exynos850_drvdata = {
>  	.suspend_clk_idx = -1,
>  };
>  
> +static const struct dwc3_exynos_driverdata gs101_drvdata = {
> +	.clk_names = { "bus_early", "susp_clk", "link_aclk", "link_pclk" },
> +	.num_clks = 4,
> +	.suspend_clk_idx = 1,
> +};
> +
>  static const struct of_device_id exynos_dwc3_match[] = {
>  	{
>  		.compatible = "samsung,exynos5250-dwusb3",
> @@ -182,6 +188,9 @@ static const struct of_device_id exynos_dwc3_match[] = {
>  	}, {
>  		.compatible = "samsung,exynos850-dwusb3",
>  		.data = &exynos850_drvdata,
> +	}, {
> +		.compatible = "google,gs101-dwusb3",
> +		.data = &gs101_drvdata,
>  	}, {
>  	}
>  };
> 
> -- 
> 2.44.0.769.g3c40516874-goog
> 

Acked-by: Thinh Nguyen <Thinh.Nguyen@...opsys.com>

Thanks,
Thinh