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Signed-off-by: Lad Prabhakar --- v1->v2 - Dropped DDIV_DIVCTL_WIDTH - width is now extracted from conf - Updated DDIV_GET_* macros - Now doing rmw as some of the DIVCTLx require it --- drivers/clk/renesas/rzv2h-cpg.c | 165 ++++++++++++++++++++++++++++++++ drivers/clk/renesas/rzv2h-cpg.h | 7 ++ 2 files changed, 172 insertions(+) diff --git a/drivers/clk/renesas/rzv2h-cpg.c b/drivers/clk/renesas/rzv2h-cpg.c index 34221046dc46..54070dd1c019 100644 --- a/drivers/clk/renesas/rzv2h-cpg.c +++ b/drivers/clk/renesas/rzv2h-cpg.c @@ -45,14 +45,23 @@ #define PDIV(val) FIELD_GET(GENMASK(5, 0), (val)) #define SDIV(val) FIELD_GET(GENMASK(2, 0), (val)) +#define DDIV_DIVCTL_WEN(shift) (1 << ((shift) + 16)) +#define DDIV_GET_WIDTH(val) FIELD_GET(GENMASK(3, 0), (val)) +#define DDIV_GET_SHIFT(val) FIELD_GET(GENMASK(7, 4), (val)) +#define DDIV_GET_REG_OFFSET(val) FIELD_GET(GENMASK(18, 8), (val)) +#define DDIV_GET_MON(val) FIELD_GET(GENMASK(23, 19), (val)) + #define GET_MOD_CLK_ID(base, index, bit) \ ((base) + ((((index) * (16))) + (bit))) +#define CPG_CLKSTATUS0 (0x700) + /** * struct rzv2h_cpg_priv - Clock Pulse Generator Private Data * * @dev: CPG device * @base: CPG register block base address + * @rmw_lock: protects register accesses * @clks: Array containing all Core and Module Clocks * @num_core_clks: Number of Core Clocks in clks[] * @num_mod_clks: Number of Module Clocks in clks[] @@ -64,6 +73,7 @@ struct rzv2h_cpg_priv { struct device *dev; void __iomem *base; + spinlock_t rmw_lock; struct clk **clks; unsigned int num_core_clks; @@ -108,6 +118,21 @@ struct mod_clock { #define to_mod_clock(_hw) container_of(_hw, struct mod_clock, hw) +/** + * struct ddiv_clk - DDIV clock + * + * @priv: CPG private data + * @div: divider clk + * @mon: monitor bit in CPG_CLKSTATUS0 register + */ +struct ddiv_clk { + struct rzv2h_cpg_priv *priv; + struct clk_divider div; + u8 mon; +}; + +#define to_ddiv_clock(_div) container_of(_div, struct ddiv_clk, div) + static unsigned long rzv2h_cpg_pll_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { @@ -173,6 +198,141 @@ rzv2h_cpg_pll_clk_register(const struct cpg_core_clk *core, return pll_clk->hw.clk; } +static unsigned long rzv2h_ddiv_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_divider *divider = to_clk_divider(hw); + unsigned int val; + + val = readl(divider->reg) >> divider->shift; + val &= clk_div_mask(divider->width); + + return divider_recalc_rate(hw, parent_rate, val, divider->table, + divider->flags, divider->width); +} + +static long rzv2h_ddiv_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) +{ + struct clk_divider *divider = to_clk_divider(hw); + + return divider_round_rate(hw, rate, prate, divider->table, + divider->width, divider->flags); +} + +static int rzv2h_ddiv_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + struct clk_divider *divider = to_clk_divider(hw); + + return divider_determine_rate(hw, req, divider->table, divider->width, + divider->flags); +} + +static inline int rzv2h_cpg_wait_ddiv_clk_update_done(void __iomem *base, u8 mon) +{ + u32 bitmask = BIT(mon); + u32 val; + + return readl_poll_timeout_atomic(base + CPG_CLKSTATUS0, val, !(val & bitmask), 10, 200); +} + +static int rzv2h_ddiv_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct clk_divider *divider = to_clk_divider(hw); + struct ddiv_clk *ddiv = to_ddiv_clock(divider); + struct rzv2h_cpg_priv *priv = ddiv->priv; + unsigned long flags = 0; + int value; + u32 val; + int ret; + + value = divider_get_val(rate, parent_rate, divider->table, + divider->width, divider->flags); + if (value < 0) + return value; + + spin_lock_irqsave(divider->lock, flags); + + ret = rzv2h_cpg_wait_ddiv_clk_update_done(priv->base, ddiv->mon); + if (ret) + goto ddiv_timeout; + + val = readl(divider->reg) | DDIV_DIVCTL_WEN(divider->shift); + val &= ~(clk_div_mask(divider->width) << divider->shift); + val |= (u32)value << divider->shift; + writel(val, divider->reg); + + ret = rzv2h_cpg_wait_ddiv_clk_update_done(priv->base, ddiv->mon); + if (ret) + goto ddiv_timeout; + + spin_unlock_irqrestore(divider->lock, flags); + + return 0; + +ddiv_timeout: + spin_unlock_irqrestore(divider->lock, flags); + return ret; +} + +static const struct clk_ops rzv2h_ddiv_clk_divider_ops = { + .recalc_rate = rzv2h_ddiv_recalc_rate, + .round_rate = rzv2h_ddiv_round_rate, + .determine_rate = rzv2h_ddiv_determine_rate, + .set_rate = rzv2h_ddiv_set_rate, +}; + +static struct clk * __init +rzv2h_cpg_ddiv_clk_register(const struct cpg_core_clk *core, + struct rzv2h_cpg_priv *priv) +{ + u8 shift = DDIV_GET_SHIFT(core->conf); + struct clk_init_data init = {}; + struct device *dev = priv->dev; + const struct clk *parent; + const char *parent_name; + struct clk_divider *div; + struct ddiv_clk *ddiv; + int ret; + + parent = priv->clks[core->parent]; + if (IS_ERR(parent)) + return ERR_CAST(parent); + + parent_name = __clk_get_name(parent); + + if ((shift + DDIV_GET_WIDTH(core->conf)) > 16) + return ERR_PTR(-EINVAL); + + ddiv = devm_kzalloc(priv->dev, sizeof(*ddiv), GFP_KERNEL); + if (!ddiv) + return ERR_PTR(-ENOMEM); + + init.name = core->name; + init.ops = &rzv2h_ddiv_clk_divider_ops; + init.parent_names = &parent_name; + init.num_parents = 1; + + ddiv->priv = priv; + ddiv->mon = DDIV_GET_MON(core->conf); + div = &ddiv->div; + div->reg = priv->base + DDIV_GET_REG_OFFSET(core->conf); + div->shift = shift; + div->width = DDIV_GET_WIDTH(core->conf); + div->flags = core->flag; + div->lock = &priv->rmw_lock; + div->hw.init = &init; + div->table = core->dtable; + + ret = devm_clk_hw_register(dev, &div->hw); + if (ret) + return ERR_PTR(ret); + + return div->hw.clk; +} + static struct clk *rzv2h_cpg_clk_src_twocell_get(struct of_phandle_args *clkspec, void *data) @@ -254,6 +414,9 @@ rzv2h_cpg_register_core_clk(const struct cpg_core_clk *core, case CLK_TYPE_PLL: clk = rzv2h_cpg_pll_clk_register(core, priv, &rzv2h_cpg_pll_ops); break; + case CLK_TYPE_DDIV: + clk = rzv2h_cpg_ddiv_clk_register(core, priv); + break; default: goto fail; } @@ -612,6 +775,8 @@ static int __init rzv2h_cpg_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; + spin_lock_init(&priv->rmw_lock); + priv->dev = dev; priv->base = devm_platform_ioremap_resource(pdev, 0); diff --git a/drivers/clk/renesas/rzv2h-cpg.h b/drivers/clk/renesas/rzv2h-cpg.h index 6df59e041701..936af15b648a 100644 --- a/drivers/clk/renesas/rzv2h-cpg.h +++ b/drivers/clk/renesas/rzv2h-cpg.h @@ -24,6 +24,8 @@ struct cpg_core_clk { unsigned int mult; unsigned int type; unsigned int conf; + const struct clk_div_table *dtable; + u32 flag; }; enum clk_types { @@ -31,6 +33,7 @@ enum clk_types { CLK_TYPE_IN, /* External Clock Input */ CLK_TYPE_FF, /* Fixed Factor Clock */ CLK_TYPE_PLL, + CLK_TYPE_DDIV, /* Dynamic Switching Divider */ }; /* BIT(31) indicates if CLK1/2 are accessible or not */ @@ -49,6 +52,10 @@ enum clk_types { DEF_TYPE(_name, _id, CLK_TYPE_IN) #define DEF_FIXED(_name, _id, _parent, _mult, _div) \ DEF_BASE(_name, _id, CLK_TYPE_FF, _parent, .div = _div, .mult = _mult) +#define DEF_DDIV(_name, _id, _parent, _conf, _dtable) \ + DEF_TYPE(_name, _id, CLK_TYPE_DDIV, .conf = _conf, \ + .parent = _parent, .dtable = _dtable, \ + .flag = CLK_DIVIDER_HIWORD_MASK) /** * struct rzv2h_mod_clk - Module Clocks definitions From patchwork Thu Aug 22 11:16:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lad, Prabhakar" X-Patchwork-Id: 13773228 Received: from mail-lj1-f179.google.com (mail-lj1-f179.google.com [209.85.208.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6FCF11B81D1; Thu, 22 Aug 2024 11:16:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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Thu, 22 Aug 2024 04:16:47 -0700 (PDT) Received: from prasmi.home ([2a00:23c8:2500:a01:2595:4364:d152:dff3]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a868f4f46a2sm104479766b.208.2024.08.22.04.16.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Aug 2024 04:16:46 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Geert Uytterhoeven , Michael Turquette , Stephen Boyd Cc: linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH v2 2/2] clk: renesas: r9a09g057-cpg: Add clock and reset entries for GTM/RIIC/SDHI/WDT Date: Thu, 22 Aug 2024 12:16:31 +0100 Message-Id: <20240822111631.544886-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240822111631.544886-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20240822111631.544886-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar Add clock and reset entries for GTM, RIIC, SDHI and WDT IP blocks. Signed-off-by: Lad Prabhakar --- v1->v2 - Updated DDIV_PACK macro to accommodate width --- drivers/clk/renesas/r9a09g057-cpg.c | 84 +++++++++++++++++++++++++++++ drivers/clk/renesas/rzv2h-cpg.h | 7 +++ 2 files changed, 91 insertions(+) diff --git a/drivers/clk/renesas/r9a09g057-cpg.c b/drivers/clk/renesas/r9a09g057-cpg.c index 9722b810e027..3ee32db5c0af 100644 --- a/drivers/clk/renesas/r9a09g057-cpg.c +++ b/drivers/clk/renesas/r9a09g057-cpg.c @@ -25,16 +25,31 @@ enum clk_ids { /* PLL Clocks */ CLK_PLLCM33, + CLK_PLLCLN, CLK_PLLDTY, CLK_PLLCA55, /* Internal Core Clocks */ CLK_PLLCM33_DIV16, + CLK_PLLCLN_DIV2, + CLK_PLLCLN_DIV8, + CLK_PLLCLN_DIV16, + CLK_PLLDTY_ACPU, + CLK_PLLDTY_ACPU_DIV4, /* Module Clocks */ MOD_CLK_BASE, }; +static const struct clk_div_table dtable_2_64[] = { + {0, 2}, + {1, 4}, + {2, 8}, + {3, 16}, + {4, 64}, + {0, 0}, +}; + static const struct cpg_core_clk r9a09g057_core_clks[] __initconst = { /* External Clock Inputs */ DEF_INPUT("audio_extal", CLK_AUDIO_EXTAL), @@ -43,23 +58,92 @@ static const struct cpg_core_clk r9a09g057_core_clks[] __initconst = { /* PLL Clocks */ DEF_FIXED(".pllcm33", CLK_PLLCM33, CLK_QEXTAL, 200, 3), + DEF_FIXED(".pllcln", CLK_PLLCLN, CLK_QEXTAL, 200, 3), DEF_FIXED(".plldty", CLK_PLLDTY, CLK_QEXTAL, 200, 3), DEF_PLL(".pllca55", CLK_PLLCA55, CLK_QEXTAL, PLL_CONF(0x64)), /* Internal Core Clocks */ DEF_FIXED(".pllcm33_div16", CLK_PLLCM33_DIV16, CLK_PLLCM33, 1, 16), + DEF_FIXED(".pllcln_div2", CLK_PLLCLN_DIV2, CLK_PLLCLN, 1, 2), + DEF_FIXED(".pllcln_div8", CLK_PLLCLN_DIV8, CLK_PLLCLN, 1, 8), + DEF_FIXED(".pllcln_div16", CLK_PLLCLN_DIV16, CLK_PLLCLN, 1, 16), + + DEF_DDIV(".plldty_acpu", CLK_PLLDTY_ACPU, CLK_PLLDTY, CDDIV0_DIVCTL2, dtable_2_64), + DEF_FIXED(".plldty_acpu_div4", CLK_PLLDTY_ACPU_DIV4, CLK_PLLDTY_ACPU, 1, 4), + /* Core Clocks */ DEF_FIXED("sys_0_pclk", R9A09G057_SYS_0_PCLK, CLK_QEXTAL, 1, 1), DEF_FIXED("iotop_0_shclk", R9A09G057_IOTOP_0_SHCLK, CLK_PLLCM33_DIV16, 1, 1), }; static const struct rzv2h_mod_clk r9a09g057_mod_clks[] __initconst = { + DEF_MOD("gtm_0_pclk", CLK_PLLCM33_DIV16, 4, 3, 2, 3), + DEF_MOD("gtm_1_pclk", CLK_PLLCM33_DIV16, 4, 4, 2, 4), + DEF_MOD("gtm_2_pclk", CLK_PLLCLN_DIV16, 4, 5, 2, 5), + DEF_MOD("gtm_3_pclk", CLK_PLLCLN_DIV16, 4, 6, 2, 6), + DEF_MOD("gtm_4_pclk", CLK_PLLCLN_DIV16, 4, 7, 2, 7), + DEF_MOD("gtm_5_pclk", CLK_PLLCLN_DIV16, 4, 8, 2, 8), + DEF_MOD("gtm_6_pclk", CLK_PLLCLN_DIV16, 4, 9, 2, 9), + DEF_MOD("gtm_7_pclk", CLK_PLLCLN_DIV16, 4, 10, 2, 10), + DEF_MOD("wdt_0_clkp", CLK_PLLCM33_DIV16, 4, 11, 2, 11), + DEF_MOD("wdt_0_clk_loco", CLK_QEXTAL, 4, 12, 2, 12), + DEF_MOD("wdt_1_clkp", CLK_PLLCLN_DIV16, 4, 13, 2, 13), + DEF_MOD("wdt_1_clk_loco", CLK_QEXTAL, 4, 14, 2, 14), + DEF_MOD("wdt_2_clkp", CLK_PLLCLN_DIV16, 4, 15, 2, 15), + DEF_MOD("wdt_2_clk_loco", CLK_QEXTAL, 5, 0, 2, 16), + DEF_MOD("wdt_3_clkp", CLK_PLLCLN_DIV16, 5, 1, 2, 17), + DEF_MOD("wdt_3_clk_loco", CLK_QEXTAL, 5, 2, 2, 18), DEF_MOD("scif_0_clk_pck", CLK_PLLCM33_DIV16, 8, 15, 4, 15), + DEF_MOD("riic_8_ckm", CLK_PLLCM33_DIV16, 9, 3, 4, 19), + DEF_MOD("riic_0_ckm", CLK_PLLCLN_DIV16, 9, 4, 4, 20), + DEF_MOD("riic_1_ckm", CLK_PLLCLN_DIV16, 9, 5, 4, 21), + DEF_MOD("riic_2_ckm", CLK_PLLCLN_DIV16, 9, 6, 4, 22), + DEF_MOD("riic_3_ckm", CLK_PLLCLN_DIV16, 9, 7, 4, 23), + DEF_MOD("riic_4_ckm", CLK_PLLCLN_DIV16, 9, 8, 4, 24), + DEF_MOD("riic_5_ckm", CLK_PLLCLN_DIV16, 9, 9, 4, 25), + DEF_MOD("riic_6_ckm", CLK_PLLCLN_DIV16, 9, 10, 4, 26), + DEF_MOD("riic_7_ckm", CLK_PLLCLN_DIV16, 9, 11, 4, 27), + DEF_MOD("sdhi_0_imclk", CLK_PLLCLN_DIV8, 10, 3, 5, 3), + DEF_MOD("sdhi_0_imclk2", CLK_PLLCLN_DIV8, 10, 4, 5, 4), + DEF_MOD("sdhi_0_clk_hs", CLK_PLLCLN_DIV2, 10, 5, 5, 5), + DEF_MOD("sdhi_0_aclk", CLK_PLLDTY_ACPU_DIV4, 10, 6, 5, 6), + DEF_MOD("sdhi_1_imclk", CLK_PLLCLN_DIV8, 10, 7, 5, 7), + DEF_MOD("sdhi_1_imclk2", CLK_PLLCLN_DIV8, 10, 8, 5, 8), + DEF_MOD("sdhi_1_clk_hs", CLK_PLLCLN_DIV2, 10, 9, 5, 9), + DEF_MOD("sdhi_1_aclk", CLK_PLLDTY_ACPU_DIV4, 10, 10, 5, 10), + DEF_MOD("sdhi_2_imclk", CLK_PLLCLN_DIV8, 10, 11, 5, 11), + DEF_MOD("sdhi_2_imclk2", CLK_PLLCLN_DIV8, 10, 12, 5, 12), + DEF_MOD("sdhi_2_clk_hs", CLK_PLLCLN_DIV2, 10, 13, 5, 13), + DEF_MOD("sdhi_2_aclk", CLK_PLLDTY_ACPU_DIV4, 10, 14, 5, 14), }; static const struct rzv2h_reset r9a09g057_resets[] __initconst = { + DEF_RST(6, 13, 2, 30), /* GTM_0_PRESETZ */ + DEF_RST(6, 14, 2, 31), /* GTM_1_PRESETZ */ + DEF_RST(6, 15, 3, 0), /* GTM_2_PRESETZ */ + DEF_RST(7, 0, 3, 1), /* GTM_3_PRESETZ */ + DEF_RST(7, 1, 3, 2), /* GTM_4_PRESETZ */ + DEF_RST(7, 2, 3, 3), /* GTM_5_PRESETZ */ + DEF_RST(7, 3, 3, 4), /* GTM_6_PRESETZ */ + DEF_RST(7, 4, 3, 5), /* GTM_7_PRESETZ */ + DEF_RST(7, 5, 3, 6), /* WDT_0_RESET */ + DEF_RST(7, 6, 3, 7), /* WDT_1_RESET */ + DEF_RST(7, 7, 3, 8), /* WDT_2_RESET */ + DEF_RST(7, 8, 3, 9), /* WDT_3_RESET */ DEF_RST(9, 5, 4, 6), /* SCIF_0_RST_SYSTEM_N */ + DEF_RST(9, 8, 4, 9), /* RIIC_0_MRST */ + DEF_RST(9, 9, 4, 10), /* RIIC_1_MRST */ + DEF_RST(9, 10, 4, 11), /* RIIC_2_MRST */ + DEF_RST(9, 11, 4, 12), /* RIIC_3_MRST */ + DEF_RST(9, 12, 4, 13), /* RIIC_4_MRST */ + DEF_RST(9, 13, 4, 14), /* RIIC_5_MRST */ + DEF_RST(9, 14, 4, 15), /* RIIC_6_MRST */ + DEF_RST(9, 15, 4, 16), /* RIIC_7_MRST */ + DEF_RST(10, 0, 4, 17), /* RIIC_8_MRST */ + DEF_RST(10, 7, 4, 24), /* SDHI_0_IXRST */ + DEF_RST(10, 8, 4, 25), /* SDHI_1_IXRST */ + DEF_RST(10, 9, 4, 26), /* SDHI_2_IXRST */ }; const struct rzv2h_cpg_info r9a09g057_cpg_info __initconst = { diff --git a/drivers/clk/renesas/rzv2h-cpg.h b/drivers/clk/renesas/rzv2h-cpg.h index 936af15b648a..09648a431014 100644 --- a/drivers/clk/renesas/rzv2h-cpg.h +++ b/drivers/clk/renesas/rzv2h-cpg.h @@ -8,6 +8,13 @@ #ifndef __RENESAS_RZV2H_CPG_H__ #define __RENESAS_RZV2H_CPG_H__ +#define CPG_CDDIV0 (0x400) + +#define DDIV_PACK(offset, bitpos, mon, size) \ + (((mon) << 19) | ((offset) << 8) | ((bitpos) << 4) | (size)) + +#define CDDIV0_DIVCTL2 DDIV_PACK(CPG_CDDIV0, 8, 2, 3) + /** * Definitions of CPG Core Clocks *