Commit 031314bd authored by Pritam Manohar Sutar's avatar Pritam Manohar Sutar Committed by Vinod Koul
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phy: exynos5-usbdrd: support HS phy for ExynosAutov920 



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.

Reviewed-by: default avatarAlim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: default avatarPritam Manohar Sutar <pritam.sutar@samsung.com>
Link: https://patch.msgid.link/20251124110453.2887437-3-pritam.sutar@samsung.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 28810c0d

drivers/phy/samsung/phy-exynos5-usbdrd.c

+123 −0
Original line number Diff line number Diff line
@@ -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;



	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)

{

	struct phy_usb_instance *inst = phy_get_drvdata(phy);

	struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);

	int ret;



	dev_dbg(phy_drd->dev, "Request to power_on usbdrd_phy phy\n");



	ret = clk_bulk_prepare_enable(phy_drd->drv_data->n_core_clks,

				      phy_drd->core_clks);

	if (ret)

		return ret;



	/* Enable supply */

	ret = regulator_bulk_enable(phy_drd->drv_data->n_regulators,

				    phy_drd->regulators);

	if (ret) {

		dev_err(phy_drd->dev, "Failed to enable PHY regulator(s)\n");

		goto fail_supply;

	}



	return 0;



fail_supply:

	clk_bulk_disable_unprepare(phy_drd->drv_data->n_core_clks,

				   phy_drd->core_clks);



	return ret;

}



static int exynosautov920_usbdrd_phy_power_off(struct phy *phy)

{

	struct phy_usb_instance *inst = phy_get_drvdata(phy);

	struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);



	dev_dbg(phy_drd->dev, "Request to power_off usbdrd_phy phy\n");



	/* Disable supply */

	regulator_bulk_disable(phy_drd->drv_data->n_regulators,

			       phy_drd->regulators);



	clk_bulk_disable_unprepare(phy_drd->drv_data->n_core_clks,

				   phy_drd->core_clks);



	return 0;

}



static const char * const exynosautov920_usb20_regulators[] = {

	"dvdd", "vdd18", "vdd33",

};



static const struct phy_ops exynosautov920_usbdrd_phy_ops = {

	.init		= exynosautov920_usbdrd_phy_init,

	.exit		= exynosautov920_usbdrd_phy_exit,

	.power_on       = exynosautov920_usbdrd_phy_power_on,

	.power_off      = exynosautov920_usbdrd_phy_power_off,

	.owner		= THIS_MODULE,

};



static const struct exynos5_usbdrd_phy_config phy_cfg_exynosautov920[] = {

	{

		.id		= EXYNOS5_DRDPHY_UTMI,

		.phy_isol	= exynos5_usbdrd_phy_isol,

		.phy_init	= exynos850_usbdrd_utmi_init,

	},

};



static const struct exynos5_usbdrd_phy_drvdata exynosautov920_usbdrd_phy = {

	.phy_cfg		= phy_cfg_exynosautov920,

	.phy_ops		= &exynosautov920_usbdrd_phy_ops,

	.pmu_offset_usbdrd0_phy	= EXYNOSAUTOV920_PHY_CTRL_USB20,

	.clk_names		= exynos5_clk_names,

	.n_clks			= ARRAY_SIZE(exynos5_clk_names),

	.core_clk_names		= exynos5_core_clk_names,

	.n_core_clks		= ARRAY_SIZE(exynos5_core_clk_names),

	.regulator_names	= exynosautov920_usb20_regulators,

	.n_regulators		= ARRAY_SIZE(exynosautov920_usb20_regulators),

};



static const struct exynos5_usbdrd_phy_config phy_cfg_gs101[] = {

	{

		.id		= EXYNOS5_DRDPHY_UTMI,
@@ -2260,6 +2380,9 @@ static const struct of_device_id exynos5_usbdrd_phy_of_match[] = { 
	}, {

		.compatible = "samsung,exynos990-usbdrd-phy",

		.data = &exynos990_usbdrd_phy

	}, {

		.compatible = "samsung,exynosautov920-usbdrd-phy",

		.data = &exynosautov920_usbdrd_phy

	},

	{ },

};

include/linux/soc/samsung/exynos-regs-pmu.h

+2 −0
Original line number Diff line number Diff line
@@ -1015,4 +1015,6 @@ 
#define GS101_GRP2_INTR_BID_UPEND				(0x0208)

#define GS101_GRP2_INTR_BID_CLEAR				(0x020c)



/* exynosautov920 */

#define EXYNOSAUTOV920_PHY_CTRL_USB20				(0x0710)

#endif /* __LINUX_SOC_EXYNOS_REGS_PMU_H */