linux-kernel - Re: [PATCH v5 2/6] phy: exynos5-usbdrd: support HS phy for ExynosAutov920

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Message-ID: <aJtMdHcidETZyiIp@vaman>
Date: Tue, 12 Aug 2025 19:45:16 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Pritam Manohar Sutar <pritam.sutar@...sung.com>
Cc: kishon@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, alim.akhtar@...sung.com,
	andre.draszik@...aro.org, peter.griffin@...aro.org,
	kauschluss@...root.org, ivo.ivanov.ivanov1@...il.com,
	igor.belwon@...tallysanemainliners.org, m.szyprowski@...sung.com,
	s.nawrocki@...sung.com, linux-phy@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, rosa.pila@...sung.com,
	dev.tailor@...sung.com, faraz.ata@...sung.com,
	muhammed.ali@...sung.com, selvarasu.g@...sung.com
Subject: Re: [PATCH v5 2/6] phy: exynos5-usbdrd: support HS phy for
 ExynosAutov920

On 05-08-25, 17:22, Pritam Manohar Sutar wrote:
> Enable UTMI+ phy support for this SoC which is very similar to what
> the existing Exynos850 supports.
> 
> Add required change in phy driver to support HS phy for this SoC.
> 
> Signed-off-by: Pritam Manohar Sutar <pritam.sutar@...sung.com>
> ---
>  drivers/phy/samsung/phy-exynos5-usbdrd.c    | 123 ++++++++++++++++++++
>  include/linux/soc/samsung/exynos-regs-pmu.h |   2 +
>  2 files changed, 125 insertions(+)
> 
> diff --git a/drivers/phy/samsung/phy-exynos5-usbdrd.c b/drivers/phy/samsung/phy-exynos5-usbdrd.c
> index dd660ebe8045..5400dd23e500 100644
> --- a/drivers/phy/samsung/phy-exynos5-usbdrd.c
> +++ b/drivers/phy/samsung/phy-exynos5-usbdrd.c
> @@ -2054,6 +2054,126 @@ static const struct exynos5_usbdrd_phy_drvdata exynos990_usbdrd_phy = {
>  	.n_regulators		= ARRAY_SIZE(exynos5_regulator_names),
>  };
>  
> +static int exynosautov920_usbdrd_phy_init(struct phy *phy)
> +{
> +	struct phy_usb_instance *inst = phy_get_drvdata(phy);
> +	struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);
> +	int ret;
> +
> +	ret = clk_bulk_prepare_enable(phy_drd->drv_data->n_clks, phy_drd->clks);
> +	if (ret)
> +		return ret;
> +
> +	/* Bypass PHY isol */
> +	inst->phy_cfg->phy_isol(inst, false);
> +
> +	/* UTMI or PIPE3 specific init */
> +	inst->phy_cfg->phy_init(phy_drd);
> +
> +	clk_bulk_disable_unprepare(phy_drd->drv_data->n_clks, phy_drd->clks);
> +
> +	return 0;
> +}
> +
> +static int exynosautov920_usbdrd_phy_exit(struct phy *phy)
> +{
> +	struct phy_usb_instance *inst = phy_get_drvdata(phy);
> +	struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);
> +	int ret = 0;

Superfluous init..

> +
> +	ret = clk_bulk_prepare_enable(phy_drd->drv_data->n_clks, phy_drd->clks);
> +	if (ret)
> +		return ret;
> +
> +	exynos850_usbdrd_phy_exit(phy);
> +
> +	/* enable PHY isol */
> +	inst->phy_cfg->phy_isol(inst, true);
> +
> +	clk_bulk_disable_unprepare(phy_drd->drv_data->n_clks, phy_drd->clks);
> +
> +	return 0;
> +}
> +
> +static int exynosautov920_usbdrd_phy_power_on(struct phy *phy)
> +{
> +	int ret;
> +	struct phy_usb_instance *inst = phy_get_drvdata(phy);
> +	struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);

Reverse chrsitmas tree pls

-- 
~Vinod