diff options
| -rw-r--r-- | drivers/clk/renesas/r8a779a0-cpg-mssr.c | 4 | ||||
| -rw-r--r-- | drivers/clk/renesas/r8a779g0-cpg-mssr.c | 20 | ||||
| -rw-r--r-- | drivers/clk/renesas/r9a06g032-clocks.c | 28 | ||||
| -rw-r--r-- | drivers/clk/renesas/rcar-gen4-cpg.c | 156 | ||||
| -rw-r--r-- | drivers/clk/renesas/rcar-gen4-cpg.h | 1 | ||||
| -rw-r--r-- | drivers/clk/renesas/renesas-cpg-mssr.c | 5 |
6 files changed, 200 insertions, 14 deletions
diff --git a/drivers/clk/renesas/r8a779a0-cpg-mssr.c b/drivers/clk/renesas/r8a779a0-cpg-mssr.c index e02542ca24a0..fcc8279647a6 100644 --- a/drivers/clk/renesas/r8a779a0-cpg-mssr.c +++ b/drivers/clk/renesas/r8a779a0-cpg-mssr.c @@ -176,8 +176,8 @@ static const struct mssr_mod_clk r8a779a0_mod_clks[] __initconst = { DEF_MOD("scif3", 704, R8A779A0_CLK_S1D8), DEF_MOD("scif4", 705, R8A779A0_CLK_S1D8), DEF_MOD("sdhi0", 706, R8A779A0_CLK_SD0), - DEF_MOD("sydm1", 709, R8A779A0_CLK_S1D2), - DEF_MOD("sydm2", 710, R8A779A0_CLK_S1D2), + DEF_MOD("sys-dmac1", 709, R8A779A0_CLK_S1D2), + DEF_MOD("sys-dmac2", 710, R8A779A0_CLK_S1D2), DEF_MOD("tmu0", 713, R8A779A0_CLK_CL16MCK), DEF_MOD("tmu1", 714, R8A779A0_CLK_S1D4), DEF_MOD("tmu2", 715, R8A779A0_CLK_S1D4), diff --git a/drivers/clk/renesas/r8a779g0-cpg-mssr.c b/drivers/clk/renesas/r8a779g0-cpg-mssr.c index 745ff9214fe8..7fca11204f74 100644 --- a/drivers/clk/renesas/r8a779g0-cpg-mssr.c +++ b/drivers/clk/renesas/r8a779g0-cpg-mssr.c @@ -66,13 +66,13 @@ static const struct cpg_core_clk r8a779g0_core_clks[] __initconst = { DEF_INPUT("extalr", CLK_EXTALR), /* Internal Core Clocks */ - DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN4_MAIN, CLK_EXTAL), - DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN4_PLL1, CLK_MAIN), - DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN4_PLL2, CLK_MAIN), - DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN4_PLL3, CLK_MAIN), - DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN4_PLL4, CLK_MAIN), - DEF_BASE(".pll5", CLK_PLL5, CLK_TYPE_GEN4_PLL5, CLK_MAIN), - DEF_BASE(".pll6", CLK_PLL6, CLK_TYPE_GEN4_PLL6, CLK_MAIN), + DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN4_MAIN, CLK_EXTAL), + DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN4_PLL1, CLK_MAIN), + DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN4_PLL2_VAR, CLK_MAIN), + DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN4_PLL3, CLK_MAIN), + DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN4_PLL4, CLK_MAIN), + DEF_BASE(".pll5", CLK_PLL5, CLK_TYPE_GEN4_PLL5, CLK_MAIN), + DEF_BASE(".pll6", CLK_PLL6, CLK_TYPE_GEN4_PLL6, CLK_MAIN), DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1), DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 2, 1), @@ -145,6 +145,7 @@ static const struct cpg_core_clk r8a779g0_core_clks[] __initconst = { DEF_FIXED("viobusd2", R8A779G0_CLK_VIOBUSD2, CLK_VIO, 2, 1), DEF_FIXED("vcbus", R8A779G0_CLK_VCBUS, CLK_VC, 1, 1), DEF_FIXED("vcbusd2", R8A779G0_CLK_VCBUSD2, CLK_VC, 2, 1), + DEF_DIV6P1("canfd", R8A779G0_CLK_CANFD, CLK_PLL5_DIV4, 0x878), DEF_FIXED("dsiref", R8A779G0_CLK_DSIREF, CLK_PLL5_DIV4, 48, 1), DEF_DIV6P1("dsiext", R8A779G0_CLK_DSIEXT, CLK_PLL5_DIV4, 0x884), @@ -163,6 +164,7 @@ static const struct mssr_mod_clk r8a779g0_mod_clks[] __initconst = { DEF_MOD("avb0", 211, R8A779G0_CLK_S0D4_HSC), DEF_MOD("avb1", 212, R8A779G0_CLK_S0D4_HSC), DEF_MOD("avb2", 213, R8A779G0_CLK_S0D4_HSC), + DEF_MOD("canfd0", 328, R8A779G0_CLK_SASYNCPERD2), DEF_MOD("dis0", 411, R8A779G0_CLK_VIOBUSD2), DEF_MOD("dsitxlink0", 415, R8A779G0_CLK_VIOBUSD2), DEF_MOD("dsitxlink1", 416, R8A779G0_CLK_VIOBUSD2), @@ -192,8 +194,8 @@ static const struct mssr_mod_clk r8a779g0_mod_clks[] __initconst = { DEF_MOD("scif3", 704, R8A779G0_CLK_SASYNCPERD4), DEF_MOD("scif4", 705, R8A779G0_CLK_SASYNCPERD4), DEF_MOD("sdhi", 706, R8A779G0_CLK_SD0), - DEF_MOD("sydm0", 709, R8A779G0_CLK_S0D6_PER), - DEF_MOD("sydm1", 710, R8A779G0_CLK_S0D6_PER), + DEF_MOD("sys-dmac0", 709, R8A779G0_CLK_S0D6_PER), + DEF_MOD("sys-dmac1", 710, R8A779G0_CLK_S0D6_PER), DEF_MOD("tmu0", 713, R8A779G0_CLK_SASYNCRT), DEF_MOD("tmu1", 714, R8A779G0_CLK_SASYNCPERD2), DEF_MOD("tmu2", 715, R8A779G0_CLK_SASYNCPERD2), diff --git a/drivers/clk/renesas/r9a06g032-clocks.c b/drivers/clk/renesas/r9a06g032-clocks.c index 983faa5707b9..087146f2ee06 100644 --- a/drivers/clk/renesas/r9a06g032-clocks.c +++ b/drivers/clk/renesas/r9a06g032-clocks.c @@ -25,6 +25,8 @@ #include <linux/spinlock.h> #include <dt-bindings/clock/r9a06g032-sysctrl.h> +#define R9A06G032_SYSCTRL_USB 0x00 +#define R9A06G032_SYSCTRL_USB_H2MODE (1<<1) #define R9A06G032_SYSCTRL_DMAMUX 0xA0 struct r9a06g032_gate { @@ -918,6 +920,29 @@ static void r9a06g032_clocks_del_clk_provider(void *data) of_clk_del_provider(data); } +static void __init r9a06g032_init_h2mode(struct r9a06g032_priv *clocks) +{ + struct device_node *usbf_np = NULL; + u32 usb; + + while ((usbf_np = of_find_compatible_node(usbf_np, NULL, + "renesas,rzn1-usbf"))) { + if (of_device_is_available(usbf_np)) + break; + } + + usb = readl(clocks->reg + R9A06G032_SYSCTRL_USB); + if (usbf_np) { + /* 1 host and 1 device mode */ + usb &= ~R9A06G032_SYSCTRL_USB_H2MODE; + of_node_put(usbf_np); + } else { + /* 2 hosts mode */ + usb |= R9A06G032_SYSCTRL_USB_H2MODE; + } + writel(usb, clocks->reg + R9A06G032_SYSCTRL_USB); +} + static int __init r9a06g032_clocks_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -947,6 +972,9 @@ static int __init r9a06g032_clocks_probe(struct platform_device *pdev) clocks->reg = of_iomap(np, 0); if (WARN_ON(!clocks->reg)) return -ENOMEM; + + r9a06g032_init_h2mode(clocks); + for (i = 0; i < ARRAY_SIZE(r9a06g032_clocks); ++i) { const struct r9a06g032_clkdesc *d = &r9a06g032_clocks[i]; const char *parent_name = d->source ? diff --git a/drivers/clk/renesas/rcar-gen4-cpg.c b/drivers/clk/renesas/rcar-gen4-cpg.c index e27832e5114f..c68d8b987054 100644 --- a/drivers/clk/renesas/rcar-gen4-cpg.c +++ b/drivers/clk/renesas/rcar-gen4-cpg.c @@ -17,6 +17,7 @@ #include <linux/err.h> #include <linux/init.h> #include <linux/io.h> +#include <linux/iopoll.h> #include <linux/slab.h> #include "renesas-cpg-mssr.h" @@ -27,6 +28,152 @@ static const struct rcar_gen4_cpg_pll_config *cpg_pll_config __initdata; static unsigned int cpg_clk_extalr __initdata; static u32 cpg_mode __initdata; +#define CPG_PLLECR 0x0820 /* PLL Enable Control Register */ + +#define CPG_PLLECR_PLLST(n) BIT(8 + ((n) < 3 ? (n) - 1 : \ + (n) > 3 ? (n) + 1 : n)) /* PLLn Circuit Status */ + +#define CPG_PLL1CR0 0x830 /* PLLn Control Registers */ +#define CPG_PLL1CR1 0x8b0 +#define CPG_PLL2CR0 0x834 +#define CPG_PLL2CR1 0x8b8 +#define CPG_PLL3CR0 0x83c +#define CPG_PLL3CR1 0x8c0 +#define CPG_PLL4CR0 0x844 +#define CPG_PLL4CR1 0x8c8 +#define CPG_PLL6CR0 0x84c +#define CPG_PLL6CR1 0x8d8 + +#define CPG_PLLxCR0_KICK BIT(31) +#define CPG_PLLxCR0_NI GENMASK(27, 20) /* Integer mult. factor */ +#define CPG_PLLxCR0_SSMODE GENMASK(18, 16) /* PLL mode */ +#define CPG_PLLxCR0_SSMODE_FM BIT(18) /* Fractional Multiplication */ +#define CPG_PLLxCR0_SSMODE_DITH BIT(17) /* Frequency Dithering */ +#define CPG_PLLxCR0_SSMODE_CENT BIT(16) /* Center (vs. Down) Spread Dithering */ +#define CPG_PLLxCR0_SSFREQ GENMASK(14, 8) /* SSCG Modulation Frequency */ +#define CPG_PLLxCR0_SSDEPT GENMASK(6, 0) /* SSCG Modulation Depth */ + +#define SSMODE_FM BIT(2) /* Fractional Multiplication */ +#define SSMODE_DITHER BIT(1) /* Frequency Dithering */ +#define SSMODE_CENTER BIT(0) /* Center (vs. Down) Spread Dithering */ + +/* PLL Clocks */ +struct cpg_pll_clk { + struct clk_hw hw; + void __iomem *pllcr0_reg; + void __iomem *pllecr_reg; + u32 pllecr_pllst_mask; +}; + +#define to_pll_clk(_hw) container_of(_hw, struct cpg_pll_clk, hw) + +static unsigned long cpg_pll_clk_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct cpg_pll_clk *pll_clk = to_pll_clk(hw); + unsigned int mult; + + mult = FIELD_GET(CPG_PLLxCR0_NI, readl(pll_clk->pllcr0_reg)) + 1; + + return parent_rate * mult * 2; +} + +static int cpg_pll_clk_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + unsigned int min_mult, max_mult, mult; + unsigned long prate; + + prate = req->best_parent_rate * 2; + min_mult = max(div64_ul(req->min_rate, prate), 1ULL); + max_mult = min(div64_ul(req->max_rate, prate), 256ULL); + if (max_mult < min_mult) + return -EINVAL; + + mult = DIV_ROUND_CLOSEST_ULL(req->rate, prate); + mult = clamp(mult, min_mult, max_mult); + + req->rate = prate * mult; + return 0; +} + +static int cpg_pll_clk_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct cpg_pll_clk *pll_clk = to_pll_clk(hw); + unsigned int mult; + u32 val; + + mult = DIV_ROUND_CLOSEST_ULL(rate, parent_rate * 2); + mult = clamp(mult, 1U, 256U); + + if (readl(pll_clk->pllcr0_reg) & CPG_PLLxCR0_KICK) + return -EBUSY; + + cpg_reg_modify(pll_clk->pllcr0_reg, CPG_PLLxCR0_NI, + FIELD_PREP(CPG_PLLxCR0_NI, mult - 1)); + + /* + * Set KICK bit in PLLxCR0 to update hardware setting and wait for + * clock change completion. + */ + cpg_reg_modify(pll_clk->pllcr0_reg, 0, CPG_PLLxCR0_KICK); + + /* + * Note: There is no HW information about the worst case latency. + * + * Using experimental measurements, it seems that no more than + * ~45 µs are needed, independently of the CPU rate. + * Since this value might be dependent on external xtal rate, pll + * rate or even the other emulation clocks rate, use 1000 as a + * "super" safe value. + */ + return readl_poll_timeout(pll_clk->pllecr_reg, val, + val & pll_clk->pllecr_pllst_mask, 0, 1000); +} + +static const struct clk_ops cpg_pll_clk_ops = { + .recalc_rate = cpg_pll_clk_recalc_rate, + .determine_rate = cpg_pll_clk_determine_rate, + .set_rate = cpg_pll_clk_set_rate, +}; + +static struct clk * __init cpg_pll_clk_register(const char *name, + const char *parent_name, + void __iomem *base, + unsigned int cr0_offset, + unsigned int cr1_offset, + unsigned int index) + +{ + struct cpg_pll_clk *pll_clk; + struct clk_init_data init = {}; + struct clk *clk; + + pll_clk = kzalloc(sizeof(*pll_clk), GFP_KERNEL); + if (!pll_clk) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &cpg_pll_clk_ops; + init.parent_names = &parent_name; + init.num_parents = 1; + + pll_clk->hw.init = &init; + pll_clk->pllcr0_reg = base + cr0_offset; + pll_clk->pllecr_reg = base + CPG_PLLECR; + pll_clk->pllecr_pllst_mask = CPG_PLLECR_PLLST(index); + + /* Disable Fractional Multiplication and Frequency Dithering */ + writel(0, base + cr1_offset); + cpg_reg_modify(pll_clk->pllcr0_reg, CPG_PLLxCR0_SSMODE, 0); + + clk = clk_register(NULL, &pll_clk->hw); + if (IS_ERR(clk)) + kfree(pll_clk); + + return clk; +} /* * Z0 Clock & Z1 Clock */ @@ -205,6 +352,15 @@ struct clk * __init rcar_gen4_cpg_clk_register(struct device *dev, div = cpg_pll_config->pll1_div; break; + case CLK_TYPE_GEN4_PLL2_VAR: + /* + * PLL2 is implemented as a custom clock, to change the + * multiplier when cpufreq changes between normal and boost + * modes. + */ + return cpg_pll_clk_register(core->name, __clk_get_name(parent), + base, CPG_PLL2CR0, CPG_PLL2CR1, 2); + case CLK_TYPE_GEN4_PLL2: mult = cpg_pll_config->pll2_mult; div = cpg_pll_config->pll2_div; diff --git a/drivers/clk/renesas/rcar-gen4-cpg.h b/drivers/clk/renesas/rcar-gen4-cpg.h index 0a0e3bdb3a66..006537e29e4e 100644 --- a/drivers/clk/renesas/rcar-gen4-cpg.h +++ b/drivers/clk/renesas/rcar-gen4-cpg.h @@ -13,6 +13,7 @@ enum rcar_gen4_clk_types { CLK_TYPE_GEN4_MAIN = CLK_TYPE_CUSTOM, CLK_TYPE_GEN4_PLL1, CLK_TYPE_GEN4_PLL2, + CLK_TYPE_GEN4_PLL2_VAR, CLK_TYPE_GEN4_PLL2X_3X, /* r8a779a0 only */ CLK_TYPE_GEN4_PLL3, CLK_TYPE_GEN4_PLL4, diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c index 5dce9779324d..202aeb232044 100644 --- a/drivers/clk/renesas/renesas-cpg-mssr.c +++ b/drivers/clk/renesas/renesas-cpg-mssr.c @@ -943,9 +943,8 @@ static int cpg_mssr_resume_noirq(struct device *dev) } if (!i) - dev_warn(dev, "Failed to enable %s%u[0x%x]\n", - priv->reg_layout == CLK_REG_LAYOUT_RZ_A ? - "STB" : "SMSTP", reg, oldval & mask); + dev_warn(dev, "Failed to enable SMSTP%u[0x%x]\n", reg, + oldval & mask); } return 0; |