linux-kernel - Re: [PATCH v3 2/2] phy: exynos5-usbdrd: Add support for the Exynos990 usbdrd phy

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Message-ID: <491d2d64-b06f-43ec-ba74-a623613beec6@linaro.org>
Date: Mon, 19 May 2025 14:58:47 +0200
From: neil.armstrong@...aro.org
To: Igor Belwon <igor.belwon@...tallysanemainliners.org>,
 Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Marek Szyprowski <m.szyprowski@...sung.com>,
 Sylwester Nawrocki <s.nawrocki@...sung.com>,
 Alim Akhtar <alim.akhtar@...sung.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, 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,
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v3 2/2] phy: exynos5-usbdrd: Add support for the Exynos990
 usbdrd phy

On 15/05/2025 16:43, Igor Belwon wrote:
> The Exynos990 usbdrd PHY is a combo PHY which supports USB SS, HS and
> DisplayPort outputs. This commit adds support only for UTMI+ (USB HS).
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Signed-off-by: Igor Belwon <igor.belwon@...tallysanemainliners.org>
> ---
>   drivers/phy/samsung/phy-exynos5-usbdrd.c    | 32 +++++++++++++++++++++++++++++
>   include/linux/soc/samsung/exynos-regs-pmu.h |  3 +++
>   2 files changed, 35 insertions(+)
> 
> diff --git a/drivers/phy/samsung/phy-exynos5-usbdrd.c b/drivers/phy/samsung/phy-exynos5-usbdrd.c
> index 917a76d584f0856f1e445630e2cf97b3c3e46b13..dd660ebe80458a13413ca9735339b4e1095af8ea 100644
> --- a/drivers/phy/samsung/phy-exynos5-usbdrd.c
> +++ b/drivers/phy/samsung/phy-exynos5-usbdrd.c
> @@ -2025,6 +2025,35 @@ static const struct exynos5_usbdrd_phy_drvdata exynos850_usbdrd_phy = {
>   	.n_regulators		= ARRAY_SIZE(exynos5_regulator_names),
>   };
>   
> +static const struct exynos5_usbdrd_phy_tuning exynos990_tunes_utmi_postinit[] = {
> +	PHY_TUNING_ENTRY_PHY(EXYNOS850_DRD_HSPPARACON,
> +			     (HSPPARACON_TXVREF |
> +			      HSPPARACON_TXPREEMPAMP | HSPPARACON_SQRX |
> +			      HSPPARACON_COMPDIS),
> +			     (FIELD_PREP_CONST(HSPPARACON_TXVREF, 7) |
> +			      FIELD_PREP_CONST(HSPPARACON_TXPREEMPAMP, 3) |
> +			      FIELD_PREP_CONST(HSPPARACON_SQRX, 5) |
> +			      FIELD_PREP_CONST(HSPPARACON_COMPDIS, 7))),
> +	PHY_TUNING_ENTRY_LAST
> +};
> +
> +static const struct exynos5_usbdrd_phy_tuning *exynos990_tunes[PTS_MAX] = {
> +	[PTS_UTMI_POSTINIT] = exynos990_tunes_utmi_postinit,
> +};
> +
> +static const struct exynos5_usbdrd_phy_drvdata exynos990_usbdrd_phy = {
> +	.phy_cfg		= phy_cfg_exynos850,
> +	.phy_ops		= &exynos850_usbdrd_phy_ops,
> +	.phy_tunes		= exynos990_tunes,
> +	.pmu_offset_usbdrd0_phy	= EXYNOS990_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	= exynos5_regulator_names,
> +	.n_regulators		= ARRAY_SIZE(exynos5_regulator_names),
> +};
> +
>   static const struct exynos5_usbdrd_phy_config phy_cfg_gs101[] = {
>   	{
>   		.id		= EXYNOS5_DRDPHY_UTMI,
> @@ -2228,6 +2257,9 @@ static const struct of_device_id exynos5_usbdrd_phy_of_match[] = {
>   	}, {
>   		.compatible = "samsung,exynos850-usbdrd-phy",
>   		.data = &exynos850_usbdrd_phy
> +	}, {
> +		.compatible = "samsung,exynos990-usbdrd-phy",
> +		.data = &exynos990_usbdrd_phy
>   	},
>   	{ },
>   };
> diff --git a/include/linux/soc/samsung/exynos-regs-pmu.h b/include/linux/soc/samsung/exynos-regs-pmu.h
> index 1a2c0e0838f99821151661878f022f2129a0c19b..7754697e581077ec0fd60b63649728896ca145c9 100644
> --- a/include/linux/soc/samsung/exynos-regs-pmu.h
> +++ b/include/linux/soc/samsung/exynos-regs-pmu.h
> @@ -662,6 +662,9 @@
>   #define EXYNOS5433_PAD_RETENTION_UFS_OPTION			(0x3268)
>   #define EXYNOS5433_PAD_RETENTION_FSYSGENIO_OPTION		(0x32A8)
>   
> +/* For Exynos990 */
> +#define EXYNOS990_PHY_CTRL_USB20				(0x72C)
> +
>   /* For Tensor GS101 */
>   /* PMU ALIVE */
>   #define GS101_SYSIP_DAT0					(0x810)
> 

Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>