From nobody Fri Oct 3 21:43:26 2025 Received: from mailout1.samsung.com (mailout1.samsung.com [203.254.224.24]) (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 4A6CD2EC57B for ; Mon, 25 Aug 2025 12:07:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.254.224.24 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756123631; cv=none; b=t95MYlFUttchaepU/3YSfTicNlRoZq+qOXKt+k2jRkINYvtqLGKz14r/6sNcv0lAVj+Etjvfo27sP0NOnFEaNOumbw0XTSgWUv+lRKGfcpvmj9jQPXWYvUtKbmAcppyls2q9in+yffbedx6UB7q8dJn6Pn6feRzeXGsOqYbkLA0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756123631; c=relaxed/simple; bh=moAJ+xQwNYcsGonpLKGjxCWt79+T5JgYR0iZ/O7RjpA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:Content-Type: References; b=HYwJNaz3Skv16gr1pwjofYLtwBEFyzOswGwLjUaWU8n9oTeyhPeD4vlvq2ZiGjw9Vmiv7RuYxkl2sf6OmvncafVgsJOuwH3SKalRBwcMV8Hjfg1YOXd3jKyGB0QHyYs/Zw4AeHGYO1yBdXvT9G7LImD1q8CUqwEfQ0v3SB20pyo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com; spf=pass smtp.mailfrom=samsung.com; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b=dwnHZPd/; arc=none smtp.client-ip=203.254.224.24 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=samsung.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="dwnHZPd/" Received: from epcas5p3.samsung.com (unknown [182.195.41.41]) by mailout1.samsung.com (KnoxPortal) with ESMTP id 20250825120707epoutp012d468f010eda53e30fd99cef612afbe0~fASJ_XgFO0280502805epoutp01V for ; Mon, 25 Aug 2025 12:07:07 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout1.samsung.com 20250825120707epoutp012d468f010eda53e30fd99cef612afbe0~fASJ_XgFO0280502805epoutp01V DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1756123627; bh=XRS2AYyulu+HD1BQE2XYQG4DqHwf0HFMuQOuYnh3HSQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dwnHZPd/xBU7CchlsZKQ23sV57bBZ61OpmLV7dMj9boBE7a6VVTZeqx/viQuns2Ub /MRGfW2rACTpMPJIn0SVtTicMWLjxy/p4CigDYz09t0a/tqkiGSl96Ymix2ZFHwhTH aHkvP6Of7y2cEuBoGKbxi9GUIboQ+Cgb5ereO7aY= Received: from epsnrtp02.localdomain (unknown [182.195.42.154]) by epcas5p2.samsung.com (KnoxPortal) with ESMTPS id 20250825120706epcas5p2c745ffc3d54c422803ab953eaff4d3dc~fASJOCJLO1942319423epcas5p26; Mon, 25 Aug 2025 12:07:06 +0000 (GMT) Received: from epcas5p4.samsung.com (unknown [182.195.38.94]) by epsnrtp02.localdomain (Postfix) with ESMTP id 4c9V0913Wjz2SSKf; Mon, 25 Aug 2025 12:07:05 +0000 (GMT) Received: from epsmtip2.samsung.com (unknown [182.195.34.31]) by epcas5p3.samsung.com (KnoxPortal) with ESMTPA id 20250825120704epcas5p37385c913027d74d221012c4ae1550c73~fASHTwPfq2789627896epcas5p3G; Mon, 25 Aug 2025 12:07:04 +0000 (GMT) Received: from Jaguar.samsungds.net (unknown [107.109.115.6]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20250825120659epsmtip2288249bf0fd51df9775a3305b500000b~fASCvaQtU0148701487epsmtip2t; Mon, 25 Aug 2025 12:06:59 +0000 (GMT) From: Ravi Patel To: jesper.nilsson@axis.com, mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, krzk@kernel.org, s.nawrocki@samsung.com, cw00.choi@samsung.com, alim.akhtar@samsung.com, linus.walleij@linaro.org, tomasz.figa@gmail.com, catalin.marinas@arm.com, will@kernel.org, arnd@arndb.de Cc: ksk4725@coasia.com, kenkim@coasia.com, pjsin865@coasia.com, gwk1013@coasia.com, hgkim05@coasia.com, mingyoungbo@coasia.com, smn1196@coasia.com, pankaj.dubey@samsung.com, shradha.t@samsung.com, ravi.patel@samsung.com, inbaraj.e@samsung.com, swathi.ks@samsung.com, hrishikesh.d@samsung.com, dj76.yang@samsung.com, hypmean.kim@samsung.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@axis.com, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, soc@lists.linux.dev Subject: [PATCH v3 02/10] clk: samsung: Add clock PLL support for ARTPEC-8 SoC Date: Mon, 25 Aug 2025 17:14:28 +0530 Message-Id: <20250825114436.46882-3-ravi.patel@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250825114436.46882-1-ravi.patel@samsung.com> X-CMS-MailID: 20250825120704epcas5p37385c913027d74d221012c4ae1550c73 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P cpgsPolicy: CPGSC10-541,Y X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250825120704epcas5p37385c913027d74d221012c4ae1550c73 References: <20250825114436.46882-1-ravi.patel@samsung.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 From: Hakyeong Kim Add below clock PLL support for Axis ARTPEC-8 SoC platform: - pll_1017x: Integer PLL with mid frequency FVCO (950 to 2400 MHz) This is used in ARTPEC-8 SoC for shared PLL - pll_1031x: Integer/Fractional PLL with mid frequency FVCO (600 to 1200 MHz) This is used in ARTPEC-8 SoC for Audio PLL FOUT calculation for pll_1017x and pll_1031x: FOUT =3D (MDIV x FIN)/(PDIV x 2^SDIV) for integer PLL FOUT =3D (((MDIV + KDIV)/65536) x FIN)/(PDIV x 2^SDIV) for fractional PLL Signed-off-by: Hakyeong Kim Signed-off-by: SeonGu Kang Signed-off-by: Ravi Patel --- drivers/clk/samsung/clk-pll.c | 128 +++++++++++++++++++++++++++++++++- drivers/clk/samsung/clk-pll.h | 2 + 2 files changed, 129 insertions(+), 1 deletion(-) diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c index 3c04a0388ff9..7bea7be1d7e4 100644 --- a/drivers/clk/samsung/clk-pll.c +++ b/drivers/clk/samsung/clk-pll.c @@ -278,7 +278,7 @@ static int samsung_pll35xx_set_rate(struct clk_hw *hw, = unsigned long drate, } =20 /* Set PLL lock time. */ - if (pll->type =3D=3D pll_142xx) + if (pll->type =3D=3D pll_142xx || pll->type =3D=3D pll_1017x) writel_relaxed(rate->pdiv * PLL142XX_LOCK_FACTOR, pll->lock_reg); else @@ -1330,6 +1330,125 @@ static const struct clk_ops samsung_pll531x_clk_ops= =3D { .recalc_rate =3D samsung_pll531x_recalc_rate, }; =20 +/* + * PLL1031x Clock Type + */ +#define PLL1031X_LOCK_FACTOR (500) + +#define PLL1031X_MDIV_MASK (0x3ff) +#define PLL1031X_PDIV_MASK (0x3f) +#define PLL1031X_SDIV_MASK (0x7) +#define PLL1031X_MDIV_SHIFT (16) +#define PLL1031X_PDIV_SHIFT (8) +#define PLL1031X_SDIV_SHIFT (0) + +#define PLL1031X_KDIV_MASK (0xffff) +#define PLL1031X_KDIV_SHIFT (0) +#define PLL1031X_MFR_MASK (0x3f) +#define PLL1031X_MRR_MASK (0x1f) +#define PLL1031X_MFR_SHIFT (16) +#define PLL1031X_MRR_SHIFT (24) + +static unsigned long samsung_pll1031x_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct samsung_clk_pll *pll =3D to_clk_pll(hw); + u32 mdiv, pdiv, sdiv, kdiv, pll_con0, pll_con3; + u64 fvco =3D parent_rate; + + pll_con0 =3D readl_relaxed(pll->con_reg); + pll_con3 =3D readl_relaxed(pll->con_reg + 0xc); + mdiv =3D (pll_con0 >> PLL1031X_MDIV_SHIFT) & PLL1031X_MDIV_MASK; + pdiv =3D (pll_con0 >> PLL1031X_PDIV_SHIFT) & PLL1031X_PDIV_MASK; + sdiv =3D (pll_con0 >> PLL1031X_SDIV_SHIFT) & PLL1031X_SDIV_MASK; + kdiv =3D (pll_con3 & PLL1031X_KDIV_MASK); + + fvco *=3D (mdiv << PLL1031X_MDIV_SHIFT) + kdiv; + do_div(fvco, (pdiv << sdiv)); + fvco >>=3D PLL1031X_MDIV_SHIFT; + + return (unsigned long)fvco; +} + +static bool samsung_pll1031x_mpk_change(u32 pll_con0, u32 pll_con3, + const struct samsung_pll_rate_table *rate) +{ + u32 old_mdiv, old_pdiv, old_kdiv; + + old_mdiv =3D (pll_con0 >> PLL1031X_MDIV_SHIFT) & PLL1031X_MDIV_MASK; + old_pdiv =3D (pll_con0 >> PLL1031X_PDIV_SHIFT) & PLL1031X_PDIV_MASK; + old_kdiv =3D (pll_con3 >> PLL1031X_KDIV_SHIFT) & PLL1031X_KDIV_MASK; + + return (old_mdiv !=3D rate->mdiv || old_pdiv !=3D rate->pdiv || + old_kdiv !=3D rate->kdiv); +} + +static int samsung_pll1031x_set_rate(struct clk_hw *hw, unsigned long drat= e, + unsigned long prate) +{ + struct samsung_clk_pll *pll =3D to_clk_pll(hw); + const struct samsung_pll_rate_table *rate; + u32 con0, con3; + + /* Get required rate settings from table */ + rate =3D samsung_get_pll_settings(pll, drate); + if (!rate) { + pr_err("%s: Invalid rate : %lu for pll clk %s\n", __func__, + drate, clk_hw_get_name(hw)); + return -EINVAL; + } + + con0 =3D readl_relaxed(pll->con_reg); + con3 =3D readl_relaxed(pll->con_reg + 0xc); + + if (!(samsung_pll1031x_mpk_change(con0, con3, rate))) { + /* If only s change, change just s value only */ + con0 &=3D ~(PLL1031X_SDIV_MASK << PLL1031X_SDIV_SHIFT); + con0 |=3D rate->sdiv << PLL1031X_SDIV_SHIFT; + writel_relaxed(con0, pll->con_reg); + + return 0; + } + + /* Set PLL lock time. */ + writel_relaxed(rate->pdiv * PLL1031X_LOCK_FACTOR, pll->lock_reg); + + /* Set PLL M, P, and S values. */ + con0 &=3D ~((PLL1031X_MDIV_MASK << PLL1031X_MDIV_SHIFT) | + (PLL1031X_PDIV_MASK << PLL1031X_PDIV_SHIFT) | + (PLL1031X_SDIV_MASK << PLL1031X_SDIV_SHIFT)); + + con0 |=3D (rate->mdiv << PLL1031X_MDIV_SHIFT) | + (rate->pdiv << PLL1031X_PDIV_SHIFT) | + (rate->sdiv << PLL1031X_SDIV_SHIFT); + + /* Set PLL K, MFR and MRR values. */ + con3 =3D readl_relaxed(pll->con_reg + 0xc); + con3 &=3D ~((PLL1031X_KDIV_MASK << PLL1031X_KDIV_SHIFT) | + (PLL1031X_MFR_MASK << PLL1031X_MFR_SHIFT) | + (PLL1031X_MRR_MASK << PLL1031X_MRR_SHIFT)); + con3 |=3D (rate->kdiv << PLL1031X_KDIV_SHIFT) | + (rate->mfr << PLL1031X_MFR_SHIFT) | + (rate->mrr << PLL1031X_MRR_SHIFT); + + /* Write configuration to PLL */ + writel_relaxed(con0, pll->con_reg); + writel_relaxed(con3, pll->con_reg + 0xc); + + /* Wait for PLL lock if the PLL is enabled */ + return samsung_pll_lock_wait(pll, BIT(pll->lock_offs)); +} + +static const struct clk_ops samsung_pll1031x_clk_ops =3D { + .recalc_rate =3D samsung_pll1031x_recalc_rate, + .determine_rate =3D samsung_pll_determine_rate, + .set_rate =3D samsung_pll1031x_set_rate, +}; + +static const struct clk_ops samsung_pll1031x_clk_min_ops =3D { + .recalc_rate =3D samsung_pll1031x_recalc_rate, +}; + static void __init _samsung_clk_register_pll(struct samsung_clk_provider *= ctx, const struct samsung_pll_clock *pll_clk) { @@ -1378,6 +1497,7 @@ static void __init _samsung_clk_register_pll(struct s= amsung_clk_provider *ctx, case pll_1451x: case pll_1452x: case pll_142xx: + case pll_1017x: pll->enable_offs =3D PLL35XX_ENABLE_SHIFT; pll->lock_offs =3D PLL35XX_LOCK_STAT_SHIFT; if (!pll->rate_table) @@ -1473,6 +1593,12 @@ static void __init _samsung_clk_register_pll(struct = samsung_clk_provider *ctx, case pll_4311: init.ops =3D &samsung_pll531x_clk_ops; break; + case pll_1031x: + if (!pll->rate_table) + init.ops =3D &samsung_pll1031x_clk_min_ops; + else + init.ops =3D &samsung_pll1031x_clk_ops; + break; default: pr_warn("%s: Unknown pll type for pll clk %s\n", __func__, pll_clk->name); diff --git a/drivers/clk/samsung/clk-pll.h b/drivers/clk/samsung/clk-pll.h index e9a5f8e0e0a3..6c8bb7f26da5 100644 --- a/drivers/clk/samsung/clk-pll.h +++ b/drivers/clk/samsung/clk-pll.h @@ -49,6 +49,8 @@ enum samsung_pll_type { pll_0718x, pll_0732x, pll_4311, + pll_1017x, + pll_1031x, }; =20 #define PLL_RATE(_fin, _m, _p, _s, _k, _ks) \ --=20 2.49.0