From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A2B7E28E579; Tue, 12 Aug 2025 14:18:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755008284; cv=none; b=F42xX8uq4rHG/d6aSomW1nukbjUXLS5l2v12+Ck7hSZpjKk/qajbycyA00aTu5FoELNN66moTctPZctjxlvcgWXaxMNQkOBWSWLXnR8li4hMwWN6YNom9UOW+vNDA0m74dscPYhXf3WhtHhZTFcD9HvSL6pRcnB7VjoUCfbTRv4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755008284; c=relaxed/simple; bh=XO4yi+cl35zAmP3v6jAb/UAs/XIZlfZgkA7+goZt8gY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ZCaxQv1t4bw9fGu1fS12XJCu4StqxAgtgUh2VdBL9wf6hXVKGFNDk7OpwFMybcyAT55Q9H04z+Xg//piyt4kw1dmcK7OcbVGoBDGhcbyB3A2BbuBhgflRIRhcTjiebizskFpxD1vv2Ft1dlZ1ixGzP3T3u5Rs8sM+v+vyAXimQs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qKXnghsv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qKXnghsv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5A503C4CEF0; Tue, 12 Aug 2025 14:18:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755008284; bh=XO4yi+cl35zAmP3v6jAb/UAs/XIZlfZgkA7+goZt8gY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=qKXnghsvCobCiCc1V94xXx9EcY1CxqZVopyNQmp037uV70h1uWJLg3M0VmfiTPz3h ByRRD1j4hVIiL6aUCnFZ8NzgcK4Qd0fUtsYjPQF2gx6FHl+7GF+LFikcd3kIZ0rBrb rvy9gPLUErtuutBlKCnxjKC/NslhH1pwpAF9ZBOIhkAkzo4qZBbjNraTFl2P+u9Lgs QZPMWprmeBHhCm6nIKPKKqIAgkzfJtMrLrjxvBPHb8cfCI6MeeCLfJbgLokI109IGQ eOMOyPCIuiBhlGlzWageG9NOgncojpHfxL/tJolfGEAhIaT0jErLVQvhMXt2cqaq5H Y/ZyOMbrv64aQ== Date: Tue, 12 Aug 2025 19:48:00 +0530 From: Vinod Koul To: Pritam Manohar Sutar Cc: kishon@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, alim.akhtar@samsung.com, andre.draszik@linaro.org, peter.griffin@linaro.org, kauschluss@disroot.org, ivo.ivanov.ivanov1@gmail.com, igor.belwon@mentallysanemainliners.org, m.szyprowski@samsung.com, s.nawrocki@samsung.com, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, rosa.pila@samsung.com, dev.tailor@samsung.com, faraz.ata@samsung.com, muhammed.ali@samsung.com, selvarasu.g@samsung.com Subject: Re: [PATCH v5 4/6] phy: exynos5-usbdrd: support HS combo phy for ExynosAutov920 Message-ID: References: <20250805115216.3798121-1-pritam.sutar@samsung.com> <20250805115216.3798121-5-pritam.sutar@samsung.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250805115216.3798121-5-pritam.sutar@samsung.com> On 05-08-25, 17:22, Pritam Manohar Sutar wrote: > Support UTMI+ combo phy for this SoC which is somewhat simmilar to > what the existing Exynos850 support does. The difference is that > some register offsets and bit fields are defferent from Exynos850. > > Add required change in phy driver to support combo HS phy for this SoC. > > Signed-off-by: Pritam Manohar Sutar > --- > drivers/phy/samsung/phy-exynos5-usbdrd.c | 210 +++++++++++++++++++++++ > 1 file changed, 210 insertions(+) > > diff --git a/drivers/phy/samsung/phy-exynos5-usbdrd.c b/drivers/phy/samsung/phy-exynos5-usbdrd.c > index 5400dd23e500..c22f4de7d094 100644 > --- a/drivers/phy/samsung/phy-exynos5-usbdrd.c > +++ b/drivers/phy/samsung/phy-exynos5-usbdrd.c > @@ -41,6 +41,13 @@ > #define EXYNOS2200_CLKRST_LINK_PCLK_SEL BIT(1) > > #define EXYNOS2200_DRD_UTMI 0x10 > + > +/* ExynosAutov920 bits */ > +#define UTMICTL_FORCE_UTMI_SUSPEND BIT(13) > +#define UTMICTL_FORCE_UTMI_SLEEP BIT(12) > +#define UTMICTL_FORCE_DPPULLDOWN BIT(9) > +#define UTMICTL_FORCE_DMPULLDOWN BIT(8) > + > #define EXYNOS2200_UTMI_FORCE_VBUSVALID BIT(1) > #define EXYNOS2200_UTMI_FORCE_BVALID BIT(0) > > @@ -250,6 +257,22 @@ > #define EXYNOS850_DRD_HSP_TEST 0x5c > #define HSP_TEST_SIDDQ BIT(24) > > +#define EXYNOSAUTOV920_DRD_HSP_CLKRST 0x100 > +#define HSPCLKRST_PHY20_SW_PORTRESET BIT(3) > +#define HSPCLKRST_PHY20_SW_POR BIT(1) > +#define HSPCLKRST_PHY20_SW_POR_SEL BIT(0) > + > +#define EXYNOSAUTOV920_DRD_HSPCTL 0x104 > +#define HSPCTRL_VBUSVLDEXTSEL BIT(13) > +#define HSPCTRL_VBUSVLDEXT BIT(12) > +#define HSPCTRL_EN_UTMISUSPEND BIT(9) > +#define HSPCTRL_COMMONONN BIT(8) > + > +#define EXYNOSAUTOV920_DRD_HSP_TEST 0x10c > + > +#define EXYNOSAUTOV920_DRD_HSPPLLTUNE 0x110 > +#define HSPPLLTUNE_FSEL GENMASK(18, 16) > + > /* Exynos9 - GS101 */ > #define EXYNOS850_DRD_SECPMACTL 0x48 > #define SECPMACTL_PMA_ROPLL_REF_CLK_SEL GENMASK(13, 12) > @@ -2054,6 +2077,139 @@ static const struct exynos5_usbdrd_phy_drvdata exynos990_usbdrd_phy = { > .n_regulators = ARRAY_SIZE(exynos5_regulator_names), > }; > > +static void > +exynosautov920_usbdrd_utmi_init(struct exynos5_usbdrd_phy *phy_drd) > +{ > + void __iomem *reg_phy = phy_drd->reg_phy; > + u32 reg; > + > + /* > + * Disable HWACG (hardware auto clock gating control). This > + * forces QACTIVE signal in Q-Channel interface to HIGH level, > + * to make sure the PHY clock is not gated by the hardware. > + */ > + reg = readl(reg_phy + EXYNOS850_DRD_LINKCTRL); > + reg |= LINKCTRL_FORCE_QACT; > + writel(reg, reg_phy + EXYNOS850_DRD_LINKCTRL); maybe add a read-modify-write helper, this is user a lot here > + > + /* De-assert link reset */ > + reg = readl(reg_phy + EXYNOS2200_DRD_CLKRST); > + reg &= ~CLKRST_LINK_SW_RST; > + writel(reg, reg_phy + EXYNOS2200_DRD_CLKRST); > + > + /* Set PHY POR High */ > + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSP_CLKRST); > + reg |= HSPCLKRST_PHY20_SW_POR | HSPCLKRST_PHY20_SW_POR_SEL; > + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSP_CLKRST); > + > + /* Enable UTMI+ */ > + reg = readl(reg_phy + EXYNOS2200_DRD_UTMI); > + reg &= ~(UTMICTL_FORCE_UTMI_SUSPEND | UTMICTL_FORCE_UTMI_SLEEP | > + UTMICTL_FORCE_DPPULLDOWN | UTMICTL_FORCE_DMPULLDOWN); > + writel(reg, reg_phy + EXYNOS2200_DRD_UTMI); > + > + /* set phy clock & control HS phy */ > + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSPCTL); > + reg |= HSPCTRL_EN_UTMISUSPEND | HSPCTRL_COMMONONN; > + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSPCTL); > + > + fsleep(100); > + > + /* Set VBUS Valid and DP-Pull up control by VBUS pad usage */ > + reg = readl(reg_phy + EXYNOS850_DRD_LINKCTRL); > + reg |= FIELD_PREP_CONST(LINKCTRL_BUS_FILTER_BYPASS, 0xf); > + writel(reg, reg_phy + EXYNOS850_DRD_LINKCTRL); > + > + reg = readl(reg_phy + EXYNOS2200_DRD_UTMI); > + reg |= EXYNOS2200_UTMI_FORCE_VBUSVALID | EXYNOS2200_UTMI_FORCE_BVALID; > + writel(reg, reg_phy + EXYNOS2200_DRD_UTMI); > + > + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSPCTL); > + reg |= HSPCTRL_VBUSVLDEXTSEL | HSPCTRL_VBUSVLDEXT; > + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSPCTL); > + > + /* Setting FSEL for refference clock */ > + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSPPLLTUNE); > + reg &= ~HSPPLLTUNE_FSEL; Empty line here please > + switch (phy_drd->extrefclk) { > + case EXYNOS5_FSEL_50MHZ: > + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 7); > + break; > + case EXYNOS5_FSEL_26MHZ: > + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 6); > + break; > + case EXYNOS5_FSEL_24MHZ: > + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 2); > + break; > + case EXYNOS5_FSEL_20MHZ: > + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 1); > + break; > + case EXYNOS5_FSEL_19MHZ2: > + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 0); > + break; > + default: > + dev_warn(phy_drd->dev, "unsupported ref clk: %#.2x\n", > + phy_drd->extrefclk); but we still continue? -- ~Vinod