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Mon, 22 Jul 2024 22:33:41 +0000 (GMT) Received: from epsmgmcp1.samsung.com (unknown [182.195.42.82]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20240722223341epsmtrp1bccf7c2d69249661d26c5813d771303e~kqcT6UzQz2611526115epsmtrp1H; Mon, 22 Jul 2024 22:33:41 +0000 (GMT) X-AuditID: b6c32a46-24fff70000002752-14-669ede45af43 Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgmcp1.samsung.com (Symantec Messaging Gateway) with SMTP id 64.78.19367.44EDE966; Tue, 23 Jul 2024 07:33:40 +0900 (KST) Received: from localhost.localdomain (unknown [10.229.9.60]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20240722223340epsmtip1f2c22379f0246fe648818a3fbb383874~kqcTvDsgr2290522905epsmtip14; Mon, 22 Jul 2024 22:33:40 +0000 (GMT) From: Sunyeal Hong To: Krzysztof Kozlowski , Sylwester Nawrocki , Chanwoo Choi , Alim Akhtar , Michael Turquette , Stephen Boyd , Rob Herring , Conor Dooley Cc: linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Sunyeal Hong Subject: [PATCH v4 3/4] clk: samsung: clk-pll: Add support for pll_531x Date: Tue, 23 Jul 2024 07:33:32 +0900 Message-ID: <20240722223333.1137947-4-sunyeal.hong@samsung.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240722223333.1137947-1-sunyeal.hong@samsung.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrLJsWRmVeSWpSXmKPExsWy7bCmua7rvXlpButuqVo8mLeNzWLN3nNM Fte/PGe1mH/kHKvF+fMb2C02Pb7GavGx5x6rxeVdc9gsZpzfx2Rx8ZSrxf89O9gtDr9pZ7X4 d20ji0XTsvVMDnwe72+0sntsWtXJ5rF5Sb1H35ZVjB6fN8kFsEZl22SkJqakFimk5iXnp2Tm pdsqeQfHO8ebmhkY6hpaWpgrKeQl5qbaKrn4BOi6ZeYA3amkUJaYUwoUCkgsLlbSt7Mpyi8t SVXIyC8usVVKLUjJKTAv0CtOzC0uzUvXy0stsTI0MDAyBSpMyM7ofXqFteCpWMXMF7oNjN+E uhg5OSQETCQentvL3MXIxSEksINRonPLTijnE6PE675l7HDOwY37WGBaui+/h6raySix5tY/ JgjnI6PE9m8XWbsYOTjYBHQl/vxzAImLCOxhkthyfglYEbPAWUaJu3MWsIOMEhZwl7jWvBRs LIuAqsTXAweZQWxeAXuJw+susUKsk5e4uOY5G8hQTgEHicm3FCBKBCVOznwC1soMVNK8dTbY RRICUzkkJi9fAHWqi8Sr1gNQtrDEq+Nb2CFsKYmX/W1Qdr7E5OtvmSCaGxglrv3rZoZI2Ess OvOTHWQxs4CmxPpd+iCmhICyxJFbUHv5JDoO/2WHCPNKdLRBw1RN4tOVy1BDZCSOnXgGZXtI 3GzsYIGE1WRGia9T1jJOYFSYheSdWUjemYWweAEj8ypGsdSC4tz01GKjAiN4DCfn525iBKdb LbcdjFPeftA7xMjEwXiIUYKDWUmE98mruWlCvCmJlVWpRfnxRaU5qcWHGE2BYT2RWUo0OR+Y 8PNK4g1NLA1MzMwMzY1MDcyVxHnvtc5NERJITyxJzU5NLUgtgulj4uCUamBSyg0WsFXUyzqp 2F7jVGnR6/yls/VFcc7EO9JHuQ5FzdeImyP8Z5Zdv1Cv6YUpj0QSTT/I3be5HvFXprU2cNed RQVxHkwHu/YdbRAyz0v8EnVL7I25dK+14cYFMs3Zz3zurmBUmKpdyPn5Q2rC73jnKVsdo85Z vUsXeaZvljbh0/5tBe+nPO22+5729vO28Gpdn3314geaOR5sCFANOhq3cQNnExOnEEOMcw3H xbyC2b9OsOvpmz59cl/uNOf1H31z2a+KGWl3n5duMLi7UUm9MZg5jHvvtHcrM9+/VzP4Me3p 5yr/rUpb9J6uef/uz4r7stttWR4Ub7TvmnzuU1DK3cUzdqa4u1pN5P28p0OJpTgj0VCLuag4 EQDeDvI1QAQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrMLMWRmVeSWpSXmKPExsWy7bCSnK7LvXlpBtsnWFs8mLeNzWLN3nNM Fte/PGe1mH/kHKvF+fMb2C02Pb7GavGx5x6rxeVdc9gsZpzfx2Rx8ZSrxf89O9gtDr9pZ7X4 d20ji0XTsvVMDnwe72+0sntsWtXJ5rF5Sb1H35ZVjB6fN8kFsEZx2aSk5mSWpRbp2yVwZfQ+ vcJa8FSsYuYL3QbGb0JdjJwcEgImEt2X3zN3MXJxCAlsZ5TYNv8YG0RCRmJjw392CFtY4n7L EVaIoveMEn3bHjF2MXJwsAnoSvz55wASFxE4xCQx8fNTFhCHWeAyo8Sxu5OZQbqFBdwlrjUv ZQGxWQRUJb4eOAgW5xWwlzi87hIrxAZ5iYtrnrOBDOUUcJCYfEsBJCwEVDLr5TWockGJkzOf gI1hBipv3jqbeQKjwCwkqVlIUgsYmVYxiqYWFOem5yYXGOoVJ+YWl+al6yXn525iBMeDVtAO xmXr/+odYmTiYDzEKMHBrCTC++TV3DQh3pTEyqrUovz4otKc1OJDjNIcLErivMo5nSlCAumJ JanZqakFqUUwWSYOTqkGJrM+tvC3FxsNZ1TnNd1uefZWXf3yUv89oX3VDwuWrQtPfnW7ZXer YAxzsM5txq5ctfuHw49bh52/1/RGd/UqviTrzFvWxw0Zb3sdE7m6eMqnC7YLviy5a5Z4U3dt dsokb6euCbdzO79VWoZIzd+SxGxt8H1OtVxP8ecff2MrAwIjy/tD7ndEdRt81Zx0UE/G3727 2VTg89aba782/pNUl54/+ffbdYHPRVUfvrp85PmZJ1vlUmVelTSwP24LUVm0WtXgS9yqX7tj 1Jj90n5O4gu/Kn7raUjakedshnoWvLNLLt5oujn/0LN6061hhw9u+df64WvhD9vVUhnlGfyb 7tjb/1x1W+jVd56GjzXdk5RYijMSDbWYi4oTAQTS1xr2AgAA X-CMS-MailID: 20240722223341epcas2p3937838f701942cc76b85858720e97a50 X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240722223341epcas2p3937838f701942cc76b85858720e97a50 References: <20240722223333.1137947-1-sunyeal.hong@samsung.com> pll531x PLL is used in Exynos Auto v920 SoC for shared pll. pll531x: Integer/fractional PLL with mid frequency FVCO (800 to 3120 MHz) PLL531x FOUT = (MDIV x FIN)/(PDIV x 2^SDIV) for integer PLL FOUT = (MDIV + F/2^32-F[31]) x FIN/(PDIV x 2^SDIV) for fractional PLL Signed-off-by: Sunyeal Hong Reviewed-by: Alim Akhtar --- drivers/clk/samsung/clk-pll.c | 44 +++++++++++++++++++++++++++++++++++ drivers/clk/samsung/clk-pll.h | 1 + 2 files changed, 45 insertions(+) diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c index 4be879ab917e..a6c81075417a 100644 --- a/drivers/clk/samsung/clk-pll.c +++ b/drivers/clk/samsung/clk-pll.c @@ -1261,6 +1261,47 @@ static const struct clk_ops samsung_pll2650xx_clk_min_ops = { .recalc_rate = samsung_pll2650xx_recalc_rate, }; +/* + * PLL531X Clock Type + */ +/* Maximum lock time can be 500 * PDIV cycles */ +#define PLL531X_LOCK_FACTOR (500) +#define PLL531X_MDIV_MASK (0x3FF) +#define PLL531X_PDIV_MASK (0x3F) +#define PLL531X_SDIV_MASK (0x7) +#define PLL531X_FDIV_MASK (0xFFFFFFFF) +#define PLL531X_MDIV_SHIFT (16) +#define PLL531X_PDIV_SHIFT (8) +#define PLL531X_SDIV_SHIFT (0) + +static unsigned long samsung_pll531x_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct samsung_clk_pll *pll = to_clk_pll(hw); + u32 pdiv, sdiv, fdiv, pll_con0, pll_con8; + u64 mdiv, fout = parent_rate; + + pll_con0 = readl_relaxed(pll->con_reg); + pll_con8 = readl_relaxed(pll->con_reg + 20); + mdiv = (pll_con0 >> PLL531X_MDIV_SHIFT) & PLL531X_MDIV_MASK; + pdiv = (pll_con0 >> PLL531X_PDIV_SHIFT) & PLL531X_PDIV_MASK; + sdiv = (pll_con0 >> PLL531X_SDIV_SHIFT) & PLL531X_SDIV_MASK; + fdiv = (pll_con8 & PLL531X_FDIV_MASK); + + if (fdiv >> 31) + mdiv--; + + fout *= (mdiv << 24) + (fdiv >> 8); + do_div(fout, (pdiv << sdiv)); + fout >>= 24; + + return (unsigned long)fout; +} + +static const struct clk_ops samsung_pll531x_clk_ops = { + .recalc_rate = samsung_pll531x_recalc_rate, +}; + static void __init _samsung_clk_register_pll(struct samsung_clk_provider *ctx, const struct samsung_pll_clock *pll_clk) { @@ -1394,6 +1435,9 @@ static void __init _samsung_clk_register_pll(struct samsung_clk_provider *ctx, else init.ops = &samsung_pll2650xx_clk_ops; break; + case pll_531x: + init.ops = &samsung_pll531x_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 ffd3d52c0dec..ce9d6f21f993 100644 --- a/drivers/clk/samsung/clk-pll.h +++ b/drivers/clk/samsung/clk-pll.h @@ -41,6 +41,7 @@ enum samsung_pll_type { pll_0516x, pll_0517x, pll_0518x, + pll_531x, }; #define PLL_RATE(_fin, _m, _p, _s, _k, _ks) \