diff options
| -rw-r--r-- | drivers/clk/ingenic/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/clk/ingenic/Makefile | 1 | ||||
| -rw-r--r-- | drivers/clk/ingenic/x1830-cgu.c | 448 |
3 files changed, 459 insertions, 0 deletions
diff --git a/drivers/clk/ingenic/Kconfig b/drivers/clk/ingenic/Kconfig index b4555b465ea6..580b0cf69ed5 100644 --- a/drivers/clk/ingenic/Kconfig +++ b/drivers/clk/ingenic/Kconfig @@ -55,6 +55,16 @@ config INGENIC_CGU_X1000 If building for a X1000 SoC, you want to say Y here. +config INGENIC_CGU_X1830 + bool "Ingenic X1830 CGU driver" + default MACH_X1830 + select INGENIC_CGU_COMMON + help + Support the clocks provided by the CGU hardware on Ingenic X1830 + and compatible SoCs. + + If building for a X1830 SoC, you want to say Y here. + config INGENIC_TCU_CLK bool "Ingenic JZ47xx TCU clocks driver" default MACH_INGENIC diff --git a/drivers/clk/ingenic/Makefile b/drivers/clk/ingenic/Makefile index 8b1dad9b74a7..aaa4bffe03c6 100644 --- a/drivers/clk/ingenic/Makefile +++ b/drivers/clk/ingenic/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_INGENIC_CGU_JZ4725B) += jz4725b-cgu.o obj-$(CONFIG_INGENIC_CGU_JZ4770) += jz4770-cgu.o obj-$(CONFIG_INGENIC_CGU_JZ4780) += jz4780-cgu.o obj-$(CONFIG_INGENIC_CGU_X1000) += x1000-cgu.o +obj-$(CONFIG_INGENIC_CGU_X1830) += x1830-cgu.o obj-$(CONFIG_INGENIC_TCU_CLK) += tcu.o diff --git a/drivers/clk/ingenic/x1830-cgu.c b/drivers/clk/ingenic/x1830-cgu.c new file mode 100644 index 000000000000..a1b2ff0ee487 --- /dev/null +++ b/drivers/clk/ingenic/x1830-cgu.c @@ -0,0 +1,448 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * X1830 SoC CGU driver + * Copyright (c) 2019 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> + */ + +#include <linux/clk-provider.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/of.h> + +#include <dt-bindings/clock/x1830-cgu.h> + +#include "cgu.h" +#include "pm.h" + +/* CGU register offsets */ +#define CGU_REG_CPCCR 0x00 +#define CGU_REG_CPPCR 0x0c +#define CGU_REG_APLL 0x10 +#define CGU_REG_MPLL 0x14 +#define CGU_REG_CLKGR0 0x20 +#define CGU_REG_OPCR 0x24 +#define CGU_REG_CLKGR1 0x28 +#define CGU_REG_DDRCDR 0x2c +#define CGU_REG_USBPCR 0x3c +#define CGU_REG_USBRDT 0x40 +#define CGU_REG_USBVBFIL 0x44 +#define CGU_REG_USBPCR1 0x48 +#define CGU_REG_MACCDR 0x54 +#define CGU_REG_EPLL 0x58 +#define CGU_REG_I2SCDR 0x60 +#define CGU_REG_LPCDR 0x64 +#define CGU_REG_MSC0CDR 0x68 +#define CGU_REG_I2SCDR1 0x70 +#define CGU_REG_SSICDR 0x74 +#define CGU_REG_CIMCDR 0x7c +#define CGU_REG_MSC1CDR 0xa4 +#define CGU_REG_CMP_INTR 0xb0 +#define CGU_REG_CMP_INTRE 0xb4 +#define CGU_REG_DRCG 0xd0 +#define CGU_REG_CPCSR 0xd4 +#define CGU_REG_VPLL 0xe0 +#define CGU_REG_MACPHYC 0xe8 + +/* bits within the OPCR register */ +#define OPCR_GATE_USBPHYCLK BIT(23) +#define OPCR_SPENDN0 BIT(7) +#define OPCR_SPENDN1 BIT(6) + +/* bits within the USBPCR register */ +#define USBPCR_SIDDQ BIT(21) +#define USBPCR_OTG_DISABLE BIT(20) + +static struct ingenic_cgu *cgu; + +static int x1830_usb_phy_enable(struct clk_hw *hw) +{ + void __iomem *reg_opcr = cgu->base + CGU_REG_OPCR; + void __iomem *reg_usbpcr = cgu->base + CGU_REG_USBPCR; + + writel((readl(reg_opcr) | OPCR_SPENDN0) & ~OPCR_GATE_USBPHYCLK, reg_opcr); + writel(readl(reg_usbpcr) & ~USBPCR_OTG_DISABLE & ~USBPCR_SIDDQ, reg_usbpcr); + return 0; +} + +static void x1830_usb_phy_disable(struct clk_hw *hw) +{ + void __iomem *reg_opcr = cgu->base + CGU_REG_OPCR; + void __iomem *reg_usbpcr = cgu->base + CGU_REG_USBPCR; + + writel((readl(reg_opcr) & ~OPCR_SPENDN0) | OPCR_GATE_USBPHYCLK, reg_opcr); + writel(readl(reg_usbpcr) | USBPCR_OTG_DISABLE | USBPCR_SIDDQ, reg_usbpcr); +} + +static int x1830_usb_phy_is_enabled(struct clk_hw *hw) +{ + void __iomem *reg_opcr = cgu->base + CGU_REG_OPCR; + void __iomem *reg_usbpcr = cgu->base + CGU_REG_USBPCR; + + return (readl(reg_opcr) & OPCR_SPENDN0) && + !(readl(reg_usbpcr) & USBPCR_SIDDQ) && + !(readl(reg_usbpcr) & USBPCR_OTG_DISABLE); +} + +static const struct clk_ops x1830_otg_phy_ops = { + .enable = x1830_usb_phy_enable, + .disable = x1830_usb_phy_disable, + .is_enabled = x1830_usb_phy_is_enabled, +}; + +static const s8 pll_od_encoding[64] = { + 0x0, 0x1, -1, 0x2, -1, -1, -1, 0x3, + -1, -1, -1, -1, -1, -1, -1, 0x4, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 0x5, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 0x6, +}; + +static const struct ingenic_cgu_clk_info x1830_cgu_clocks[] = { + + /* External clocks */ + + [X1830_CLK_EXCLK] = { "ext", CGU_CLK_EXT }, + [X1830_CLK_RTCLK] = { "rtc", CGU_CLK_EXT }, + + /* PLLs */ + + [X1830_CLK_APLL] = { + "apll", CGU_CLK_PLL, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .pll = { + .reg = CGU_REG_APLL, + .rate_multiplier = 2, + .m_shift = 20, + .m_bits = 9, + .m_offset = 1, + .n_shift = 14, + .n_bits = 6, + .n_offset = 1, + .od_shift = 11, + .od_bits = 3, + .od_max = 64, + .od_encoding = pll_od_encoding, + .bypass_reg = CGU_REG_CPPCR, + .bypass_bit = 30, + .enable_bit = 0, + .stable_bit = 3, + }, + }, + + [X1830_CLK_MPLL] = { + "mpll", CGU_CLK_PLL, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .pll = { + .reg = CGU_REG_MPLL, + .rate_multiplier = 2, + .m_shift = 20, + .m_bits = 9, + .m_offset = 1, + .n_shift = 14, + .n_bits = 6, + .n_offset = 1, + .od_shift = 11, + .od_bits = 3, + .od_max = 64, + .od_encoding = pll_od_encoding, + .bypass_reg = CGU_REG_CPPCR, + .bypass_bit = 28, + .enable_bit = 0, + .stable_bit = 3, + }, + }, + + [X1830_CLK_EPLL] = { + "epll", CGU_CLK_PLL, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .pll = { + .reg = CGU_REG_EPLL, + .rate_multiplier = 2, + .m_shift = 20, + .m_bits = 9, + .m_offset = 1, + .n_shift = 14, + .n_bits = 6, + .n_offset = 1, + .od_shift = 11, + .od_bits = 3, + .od_max = 64, + .od_encoding = pll_od_encoding, + .bypass_reg = CGU_REG_CPPCR, + .bypass_bit = 24, + .enable_bit = 0, + .stable_bit = 3, + }, + }, + + [X1830_CLK_VPLL] = { + "vpll", CGU_CLK_PLL, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .pll = { + .reg = CGU_REG_VPLL, + .rate_multiplier = 2, + .m_shift = 20, + .m_bits = 9, + .m_offset = 1, + .n_shift = 14, + .n_bits = 6, + .n_offset = 1, + .od_shift = 11, + .od_bits = 3, + .od_max = 64, + .od_encoding = pll_od_encoding, + .bypass_reg = CGU_REG_CPPCR, + .bypass_bit = 26, + .enable_bit = 0, + .stable_bit = 3, + }, + }, + + /* Custom (SoC-specific) OTG PHY */ + + [X1830_CLK_OTGPHY] = { + "otg_phy", CGU_CLK_CUSTOM, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .custom = { &x1830_otg_phy_ops }, + }, + + /* Muxes & dividers */ + + [X1830_CLK_SCLKA] = { + "sclk_a", CGU_CLK_MUX, + .parents = { -1, X1830_CLK_EXCLK, X1830_CLK_APLL, -1 }, + .mux = { CGU_REG_CPCCR, 30, 2 }, + }, + + [X1830_CLK_CPUMUX] = { + "cpu_mux", CGU_CLK_MUX, + .parents = { -1, X1830_CLK_SCLKA, X1830_CLK_MPLL, -1 }, + .mux = { CGU_REG_CPCCR, 28, 2 }, + }, + + [X1830_CLK_CPU] = { + "cpu", CGU_CLK_DIV | CGU_CLK_GATE, + .parents = { X1830_CLK_CPUMUX, -1, -1, -1 }, + .div = { CGU_REG_CPCCR, 0, 1, 4, 22, -1, -1 }, + .gate = { CGU_REG_CLKGR1, 15 }, + }, + + [X1830_CLK_L2CACHE] = { + "l2cache", CGU_CLK_DIV, + .parents = { X1830_CLK_CPUMUX, -1, -1, -1 }, + .div = { CGU_REG_CPCCR, 4, 1, 4, 22, -1, -1 }, + }, + + [X1830_CLK_AHB0] = { + "ahb0", CGU_CLK_MUX | CGU_CLK_DIV, + .parents = { -1, X1830_CLK_SCLKA, X1830_CLK_MPLL, -1 }, + .mux = { CGU_REG_CPCCR, 26, 2 }, + .div = { CGU_REG_CPCCR, 8, 1, 4, 21, -1, -1 }, + }, + + [X1830_CLK_AHB2PMUX] = { + "ahb2_apb_mux", CGU_CLK_MUX, + .parents = { -1, X1830_CLK_SCLKA, X1830_CLK_MPLL, -1 }, + .mux = { CGU_REG_CPCCR, 24, 2 }, + }, + + [X1830_CLK_AHB2] = { + "ahb2", CGU_CLK_DIV, + .parents = { X1830_CLK_AHB2PMUX, -1, -1, -1 }, + .div = { CGU_REG_CPCCR, 12, 1, 4, 20, -1, -1 }, + }, + + [X1830_CLK_PCLK] = { + "pclk", CGU_CLK_DIV | CGU_CLK_GATE, + .parents = { X1830_CLK_AHB2PMUX, -1, -1, -1 }, + .div = { CGU_REG_CPCCR, 16, 1, 4, 20, -1, -1 }, + .gate = { CGU_REG_CLKGR1, 14 }, + }, + + [X1830_CLK_DDR] = { + "ddr", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE, + .parents = { -1, X1830_CLK_SCLKA, X1830_CLK_MPLL, -1 }, + .mux = { CGU_REG_DDRCDR, 30, 2 }, + .div = { CGU_REG_DDRCDR, 0, 1, 4, 29, 28, 27 }, + .gate = { CGU_REG_CLKGR0, 31 }, + }, + + [X1830_CLK_MAC] = { + "mac", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE, + .parents = { X1830_CLK_SCLKA, X1830_CLK_MPLL, + X1830_CLK_VPLL, X1830_CLK_EPLL }, + .mux = { CGU_REG_MACCDR, 30, 2 }, + .div = { CGU_REG_MACCDR, 0, 1, 8, 29, 28, 27 }, + .gate = { CGU_REG_CLKGR1, 4 }, + }, + + [X1830_CLK_LCD] = { + "lcd", CGU_CLK_MUX | CGU_CLK_DIV | CGU_CLK_GATE, + .parents = { X1830_CLK_SCLKA, X1830_CLK_MPLL, + X1830_CLK_VPLL, X1830_CLK_EPLL }, + .mux = { CGU_REG_LPCDR, 30, 2 }, + .div = { CGU_REG_LPCDR, 0, 1, 8, 28, 27, 26 }, + .gate = { CGU_REG_CLKGR1, 9 }, + }, + + [X1830_CLK_MSCMUX] = { + "msc_mux", CGU_CLK_MUX, + .parents = { X1830_CLK_SCLKA, X1830_CLK_MPLL, + X1830_CLK_VPLL, X1830_CLK_EPLL }, + .mux = { CGU_REG_MSC0CDR, 30, 2 }, + }, + + [X1830_CLK_MSC0] = { + "msc0", CGU_CLK_DIV | CGU_CLK_GATE, + .parents = { X1830_CLK_MSCMUX, -1, -1, -1 }, + .div = { CGU_REG_MSC0CDR, 0, 2, 8, 29, 28, 27 }, + .gate = { CGU_REG_CLKGR0, 4 }, + }, + + [X1830_CLK_MSC1] = { + "msc1", CGU_CLK_DIV | CGU_CLK_GATE, + .parents = { X1830_CLK_MSCMUX, -1, -1, -1 }, + .div = { CGU_REG_MSC1CDR, 0, 2, 8, 29, 28, 27 }, + .gate = { CGU_REG_CLKGR0, 5 }, + }, + + [X1830_CLK_SSIPLL] = { + "ssi_pll", CGU_CLK_MUX | CGU_CLK_DIV, + .parents = { X1830_CLK_SCLKA, X1830_CLK_MPLL, + X1830_CLK_VPLL, X1830_CLK_EPLL }, + .mux = { CGU_REG_SSICDR, 30, 2 }, + .div = { CGU_REG_SSICDR, 0, 1, 8, 28, 27, 26 }, + }, + + [X1830_CLK_SSIPLL_DIV2] = { + "ssi_pll_div2", CGU_CLK_FIXDIV, + .parents = { X1830_CLK_SSIPLL }, + .fixdiv = { 2 }, + }, + + [X1830_CLK_SSIMUX] = { + "ssi_mux", CGU_CLK_MUX, + .parents = { X1830_CLK_EXCLK, X1830_CLK_SSIPLL_DIV2, -1, -1 }, + .mux = { CGU_REG_SSICDR, 29, 1 }, + }, + + /* Gate-only clocks */ + + [X1830_CLK_EMC] = { + "emc", CGU_CLK_GATE, + .parents = { X1830_CLK_AHB2, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 0 }, + }, + + [X1830_CLK_EFUSE] = { + "efuse", CGU_CLK_GATE, + .parents = { X1830_CLK_AHB2, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 1 }, + }, + + [X1830_CLK_OTG] = { + "otg", CGU_CLK_GATE, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 3 }, + }, + + [X1830_CLK_SSI0] = { + "ssi0", CGU_CLK_GATE, + .parents = { X1830_CLK_SSIMUX, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 6 }, + }, + + [X1830_CLK_SMB0] = { + "smb0", CGU_CLK_GATE, + .parents = { X1830_CLK_PCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 7 }, + }, + + [X1830_CLK_SMB1] = { + "smb1", CGU_CLK_GATE, + .parents = { X1830_CLK_PCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 8 }, + }, + + [X1830_CLK_SMB2] = { + "smb2", CGU_CLK_GATE, + .parents = { X1830_CLK_PCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 9 }, + }, + + [X1830_CLK_UART0] = { + "uart0", CGU_CLK_GATE, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 14 }, + }, + + [X1830_CLK_UART1] = { + "uart1", CGU_CLK_GATE, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 15 }, + }, + + [X1830_CLK_SSI1] = { + "ssi1", CGU_CLK_GATE, + .parents = { X1830_CLK_SSIMUX, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 19 }, + }, + + [X1830_CLK_SFC] = { + "sfc", CGU_CLK_GATE, + .parents = { X1830_CLK_SSIPLL, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 20 }, + }, + + [X1830_CLK_PDMA] = { + "pdma", CGU_CLK_GATE, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 21 }, + }, + + [X1830_CLK_TCU] = { + "tcu", CGU_CLK_GATE, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR0, 30 }, + }, + + [X1830_CLK_DTRNG] = { + "dtrng", CGU_CLK_GATE, + .parents = { X1830_CLK_PCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR1, 1 }, + }, + + [X1830_CLK_OST] = { + "ost", CGU_CLK_GATE, + .parents = { X1830_CLK_EXCLK, -1, -1, -1 }, + .gate = { CGU_REG_CLKGR1, 11 }, + }, +}; + +static void __init x1830_cgu_init(struct device_node *np) +{ + int retval; + + cgu = ingenic_cgu_new(x1830_cgu_clocks, + ARRAY_SIZE(x1830_cgu_clocks), np); + if (!cgu) { + pr_err("%s: failed to initialise CGU\n", __func__); + return; + } + + retval = ingenic_cgu_register_clocks(cgu); + if (retval) { + pr_err("%s: failed to register CGU Clocks\n", __func__); + return; + } + + ingenic_cgu_register_syscore_ops(cgu); +} +/* + * CGU has some children devices, this is useful for probing children devices + * in the case where the device node is compatible with "simple-mfd". + */ +CLK_OF_DECLARE_DRIVER(x1830_cgu, "ingenic,x1830-cgu", x1830_cgu_init); |