diff options
Diffstat (limited to 'drivers/clk/spacemit')
| -rw-r--r-- | drivers/clk/spacemit/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/clk/spacemit/ccu-k1.c | 242 | ||||
| -rw-r--r-- | drivers/clk/spacemit/ccu_mix.h | 11 | ||||
| -rw-r--r-- | drivers/clk/spacemit/ccu_pll.c | 2 |
4 files changed, 131 insertions, 125 deletions
diff --git a/drivers/clk/spacemit/Kconfig b/drivers/clk/spacemit/Kconfig index 4c4df845b3cb..3854f6ae6d0e 100644 --- a/drivers/clk/spacemit/Kconfig +++ b/drivers/clk/spacemit/Kconfig @@ -3,6 +3,7 @@ config SPACEMIT_CCU tristate "Clock support for SpacemiT SoCs" depends on ARCH_SPACEMIT || COMPILE_TEST + select AUXILIARY_BUS select MFD_SYSCON help Say Y to enable clock controller unit support for SpacemiT SoCs. diff --git a/drivers/clk/spacemit/ccu-k1.c b/drivers/clk/spacemit/ccu-k1.c index cdde37a05235..65e6de030717 100644 --- a/drivers/clk/spacemit/ccu-k1.c +++ b/drivers/clk/spacemit/ccu-k1.c @@ -5,12 +5,16 @@ */ #include <linux/array_size.h> +#include <linux/auxiliary_bus.h> #include <linux/clk-provider.h> #include <linux/delay.h> +#include <linux/idr.h> #include <linux/mfd/syscon.h> #include <linux/minmax.h> #include <linux/module.h> #include <linux/platform_device.h> +#include <linux/slab.h> +#include <soc/spacemit/k1-syscon.h> #include "ccu_common.h" #include "ccu_pll.h" @@ -19,121 +23,14 @@ #include <dt-bindings/clock/spacemit,k1-syscon.h> -/* APBS register offset */ -#define APBS_PLL1_SWCR1 0x100 -#define APBS_PLL1_SWCR2 0x104 -#define APBS_PLL1_SWCR3 0x108 -#define APBS_PLL2_SWCR1 0x118 -#define APBS_PLL2_SWCR2 0x11c -#define APBS_PLL2_SWCR3 0x120 -#define APBS_PLL3_SWCR1 0x124 -#define APBS_PLL3_SWCR2 0x128 -#define APBS_PLL3_SWCR3 0x12c - -/* MPMU register offset */ -#define MPMU_POSR 0x0010 -#define POSR_PLL1_LOCK BIT(27) -#define POSR_PLL2_LOCK BIT(28) -#define POSR_PLL3_LOCK BIT(29) -#define MPMU_SUCCR 0x0014 -#define MPMU_ISCCR 0x0044 -#define MPMU_WDTPCR 0x0200 -#define MPMU_RIPCCR 0x0210 -#define MPMU_ACGR 0x1024 -#define MPMU_APBCSCR 0x1050 -#define MPMU_SUCCR_1 0x10b0 - -/* APBC register offset */ -#define APBC_UART1_CLK_RST 0x00 -#define APBC_UART2_CLK_RST 0x04 -#define APBC_GPIO_CLK_RST 0x08 -#define APBC_PWM0_CLK_RST 0x0c -#define APBC_PWM1_CLK_RST 0x10 -#define APBC_PWM2_CLK_RST 0x14 -#define APBC_PWM3_CLK_RST 0x18 -#define APBC_TWSI8_CLK_RST 0x20 -#define APBC_UART3_CLK_RST 0x24 -#define APBC_RTC_CLK_RST 0x28 -#define APBC_TWSI0_CLK_RST 0x2c -#define APBC_TWSI1_CLK_RST 0x30 -#define APBC_TIMERS1_CLK_RST 0x34 -#define APBC_TWSI2_CLK_RST 0x38 -#define APBC_AIB_CLK_RST 0x3c -#define APBC_TWSI4_CLK_RST 0x40 -#define APBC_TIMERS2_CLK_RST 0x44 -#define APBC_ONEWIRE_CLK_RST 0x48 -#define APBC_TWSI5_CLK_RST 0x4c -#define APBC_DRO_CLK_RST 0x58 -#define APBC_IR_CLK_RST 0x5c -#define APBC_TWSI6_CLK_RST 0x60 -#define APBC_COUNTER_CLK_SEL 0x64 -#define APBC_TWSI7_CLK_RST 0x68 -#define APBC_TSEN_CLK_RST 0x6c -#define APBC_UART4_CLK_RST 0x70 -#define APBC_UART5_CLK_RST 0x74 -#define APBC_UART6_CLK_RST 0x78 -#define APBC_SSP3_CLK_RST 0x7c -#define APBC_SSPA0_CLK_RST 0x80 -#define APBC_SSPA1_CLK_RST 0x84 -#define APBC_IPC_AP2AUD_CLK_RST 0x90 -#define APBC_UART7_CLK_RST 0x94 -#define APBC_UART8_CLK_RST 0x98 -#define APBC_UART9_CLK_RST 0x9c -#define APBC_CAN0_CLK_RST 0xa0 -#define APBC_PWM4_CLK_RST 0xa8 -#define APBC_PWM5_CLK_RST 0xac -#define APBC_PWM6_CLK_RST 0xb0 -#define APBC_PWM7_CLK_RST 0xb4 -#define APBC_PWM8_CLK_RST 0xb8 -#define APBC_PWM9_CLK_RST 0xbc -#define APBC_PWM10_CLK_RST 0xc0 -#define APBC_PWM11_CLK_RST 0xc4 -#define APBC_PWM12_CLK_RST 0xc8 -#define APBC_PWM13_CLK_RST 0xcc -#define APBC_PWM14_CLK_RST 0xd0 -#define APBC_PWM15_CLK_RST 0xd4 -#define APBC_PWM16_CLK_RST 0xd8 -#define APBC_PWM17_CLK_RST 0xdc -#define APBC_PWM18_CLK_RST 0xe0 -#define APBC_PWM19_CLK_RST 0xe4 - -/* APMU register offset */ -#define APMU_JPG_CLK_RES_CTRL 0x020 -#define APMU_CSI_CCIC2_CLK_RES_CTRL 0x024 -#define APMU_ISP_CLK_RES_CTRL 0x038 -#define APMU_LCD_CLK_RES_CTRL1 0x044 -#define APMU_LCD_SPI_CLK_RES_CTRL 0x048 -#define APMU_LCD_CLK_RES_CTRL2 0x04c -#define APMU_CCIC_CLK_RES_CTRL 0x050 -#define APMU_SDH0_CLK_RES_CTRL 0x054 -#define APMU_SDH1_CLK_RES_CTRL 0x058 -#define APMU_USB_CLK_RES_CTRL 0x05c -#define APMU_QSPI_CLK_RES_CTRL 0x060 -#define APMU_DMA_CLK_RES_CTRL 0x064 -#define APMU_AES_CLK_RES_CTRL 0x068 -#define APMU_VPU_CLK_RES_CTRL 0x0a4 -#define APMU_GPU_CLK_RES_CTRL 0x0cc -#define APMU_SDH2_CLK_RES_CTRL 0x0e0 -#define APMU_PMUA_MC_CTRL 0x0e8 -#define APMU_PMU_CC2_AP 0x100 -#define APMU_PMUA_EM_CLK_RES_CTRL 0x104 -#define APMU_AUDIO_CLK_RES_CTRL 0x14c -#define APMU_HDMI_CLK_RES_CTRL 0x1b8 -#define APMU_CCI550_CLK_CTRL 0x300 -#define APMU_ACLK_CLK_CTRL 0x388 -#define APMU_CPU_C0_CLK_CTRL 0x38C -#define APMU_CPU_C1_CLK_CTRL 0x390 -#define APMU_PCIE_CLK_RES_CTRL_0 0x3cc -#define APMU_PCIE_CLK_RES_CTRL_1 0x3d4 -#define APMU_PCIE_CLK_RES_CTRL_2 0x3dc -#define APMU_EMAC0_CLK_RES_CTRL 0x3e4 -#define APMU_EMAC1_CLK_RES_CTRL 0x3ec - struct spacemit_ccu_data { + const char *reset_name; struct clk_hw **hws; size_t num; }; +static DEFINE_IDA(auxiliary_ids); + /* APBS clocks start, APBS region contains and only contains all PLL clocks */ /* @@ -170,7 +67,8 @@ CCU_FACTOR_GATE_DEFINE(pll1_d4, CCU_PARENT_HW(pll1), APBS_PLL1_SWCR2, BIT(3), 4, CCU_FACTOR_GATE_DEFINE(pll1_d5, CCU_PARENT_HW(pll1), APBS_PLL1_SWCR2, BIT(4), 5, 1); CCU_FACTOR_GATE_DEFINE(pll1_d6, CCU_PARENT_HW(pll1), APBS_PLL1_SWCR2, BIT(5), 6, 1); CCU_FACTOR_GATE_DEFINE(pll1_d7, CCU_PARENT_HW(pll1), APBS_PLL1_SWCR2, BIT(6), 7, 1); -CCU_FACTOR_GATE_DEFINE(pll1_d8, CCU_PARENT_HW(pll1), APBS_PLL1_SWCR2, BIT(7), 8, 1); +CCU_FACTOR_GATE_FLAGS_DEFINE(pll1_d8, CCU_PARENT_HW(pll1), APBS_PLL1_SWCR2, BIT(7), 8, 1, + CLK_IS_CRITICAL); CCU_FACTOR_GATE_DEFINE(pll1_d11_223p4, CCU_PARENT_HW(pll1), APBS_PLL1_SWCR2, BIT(15), 11, 1); CCU_FACTOR_GATE_DEFINE(pll1_d13_189, CCU_PARENT_HW(pll1), APBS_PLL1_SWCR2, BIT(16), 13, 1); CCU_FACTOR_GATE_DEFINE(pll1_d23_106p8, CCU_PARENT_HW(pll1), APBS_PLL1_SWCR2, BIT(20), 23, 1); @@ -819,8 +717,9 @@ static struct clk_hw *k1_ccu_pll_hws[] = { }; static const struct spacemit_ccu_data k1_ccu_pll_data = { - .hws = k1_ccu_pll_hws, - .num = ARRAY_SIZE(k1_ccu_pll_hws), + /* The PLL CCU implements no resets */ + .hws = k1_ccu_pll_hws, + .num = ARRAY_SIZE(k1_ccu_pll_hws), }; static struct clk_hw *k1_ccu_mpmu_hws[] = { @@ -860,8 +759,9 @@ static struct clk_hw *k1_ccu_mpmu_hws[] = { }; static const struct spacemit_ccu_data k1_ccu_mpmu_data = { - .hws = k1_ccu_mpmu_hws, - .num = ARRAY_SIZE(k1_ccu_mpmu_hws), + .reset_name = "mpmu-reset", + .hws = k1_ccu_mpmu_hws, + .num = ARRAY_SIZE(k1_ccu_mpmu_hws), }; static struct clk_hw *k1_ccu_apbc_hws[] = { @@ -968,8 +868,9 @@ static struct clk_hw *k1_ccu_apbc_hws[] = { }; static const struct spacemit_ccu_data k1_ccu_apbc_data = { - .hws = k1_ccu_apbc_hws, - .num = ARRAY_SIZE(k1_ccu_apbc_hws), + .reset_name = "apbc-reset", + .hws = k1_ccu_apbc_hws, + .num = ARRAY_SIZE(k1_ccu_apbc_hws), }; static struct clk_hw *k1_ccu_apmu_hws[] = { @@ -1038,8 +939,21 @@ static struct clk_hw *k1_ccu_apmu_hws[] = { }; static const struct spacemit_ccu_data k1_ccu_apmu_data = { - .hws = k1_ccu_apmu_hws, - .num = ARRAY_SIZE(k1_ccu_apmu_hws), + .reset_name = "apmu-reset", + .hws = k1_ccu_apmu_hws, + .num = ARRAY_SIZE(k1_ccu_apmu_hws), +}; + +static const struct spacemit_ccu_data k1_ccu_rcpu_data = { + .reset_name = "rcpu-reset", +}; + +static const struct spacemit_ccu_data k1_ccu_rcpu2_data = { + .reset_name = "rcpu2-reset", +}; + +static const struct spacemit_ccu_data k1_ccu_apbc2_data = { + .reset_name = "apbc2-reset", }; static int spacemit_ccu_register(struct device *dev, @@ -1050,6 +964,10 @@ static int spacemit_ccu_register(struct device *dev, struct clk_hw_onecell_data *clk_data; int i, ret; + /* Nothing to do if the CCU does not implement any clocks */ + if (!data->hws) + return 0; + clk_data = devm_kzalloc(dev, struct_size(clk_data, hws, data->num), GFP_KERNEL); if (!clk_data) @@ -1090,9 +1008,74 @@ static int spacemit_ccu_register(struct device *dev, return ret; } +static void spacemit_cadev_release(struct device *dev) +{ + struct auxiliary_device *adev = to_auxiliary_dev(dev); + + ida_free(&auxiliary_ids, adev->id); + kfree(to_spacemit_ccu_adev(adev)); +} + +static void spacemit_adev_unregister(void *data) +{ + struct auxiliary_device *adev = data; + + auxiliary_device_delete(adev); + auxiliary_device_uninit(adev); +} + +static int spacemit_ccu_reset_register(struct device *dev, + struct regmap *regmap, + const char *reset_name) +{ + struct spacemit_ccu_adev *cadev; + struct auxiliary_device *adev; + int ret; + + /* Nothing to do if the CCU does not implement a reset controller */ + if (!reset_name) + return 0; + + cadev = kzalloc(sizeof(*cadev), GFP_KERNEL); + if (!cadev) + return -ENOMEM; + + cadev->regmap = regmap; + + adev = &cadev->adev; + adev->name = reset_name; + adev->dev.parent = dev; + adev->dev.release = spacemit_cadev_release; + adev->dev.of_node = dev->of_node; + ret = ida_alloc(&auxiliary_ids, GFP_KERNEL); + if (ret < 0) + goto err_free_cadev; + adev->id = ret; + + ret = auxiliary_device_init(adev); + if (ret) + goto err_free_aux_id; + + ret = auxiliary_device_add(adev); + if (ret) { + auxiliary_device_uninit(adev); + return ret; + } + + return devm_add_action_or_reset(dev, spacemit_adev_unregister, adev); + +err_free_aux_id: + ida_free(&auxiliary_ids, adev->id); +err_free_cadev: + kfree(cadev); + + return ret; +} + static int k1_ccu_probe(struct platform_device *pdev) { struct regmap *base_regmap, *lock_regmap = NULL; + const struct spacemit_ccu_data *data; struct device *dev = &pdev->dev; int ret; @@ -1121,11 +1104,16 @@ static int k1_ccu_probe(struct platform_device *pdev) "failed to get lock regmap\n"); } - ret = spacemit_ccu_register(dev, base_regmap, lock_regmap, - of_device_get_match_data(dev)); + data = of_device_get_match_data(dev); + + ret = spacemit_ccu_register(dev, base_regmap, lock_regmap, data); if (ret) return dev_err_probe(dev, ret, "failed to register clocks\n"); + ret = spacemit_ccu_reset_register(dev, base_regmap, data->reset_name); + if (ret) + return dev_err_probe(dev, ret, "failed to register resets\n"); + return 0; } @@ -1146,6 +1134,18 @@ static const struct of_device_id of_k1_ccu_match[] = { .compatible = "spacemit,k1-syscon-apmu", .data = &k1_ccu_apmu_data, }, + { + .compatible = "spacemit,k1-syscon-rcpu", + .data = &k1_ccu_rcpu_data, + }, + { + .compatible = "spacemit,k1-syscon-rcpu2", + .data = &k1_ccu_rcpu2_data, + }, + { + .compatible = "spacemit,k1-syscon-apbc2", + .data = &k1_ccu_apbc2_data, + }, { } }; MODULE_DEVICE_TABLE(of, of_k1_ccu_match); diff --git a/drivers/clk/spacemit/ccu_mix.h b/drivers/clk/spacemit/ccu_mix.h index 51d19f5d6aac..54d40cd39b27 100644 --- a/drivers/clk/spacemit/ccu_mix.h +++ b/drivers/clk/spacemit/ccu_mix.h @@ -101,17 +101,22 @@ static struct ccu_mix _name = { \ } \ } -#define CCU_FACTOR_GATE_DEFINE(_name, _parent, _reg_ctrl, _mask_gate, _div, \ - _mul) \ +#define CCU_FACTOR_GATE_FLAGS_DEFINE(_name, _parent, _reg_ctrl, _mask_gate, _div, \ + _mul, _flags) \ static struct ccu_mix _name = { \ .gate = CCU_GATE_INIT(_mask_gate), \ .factor = CCU_FACTOR_INIT(_div, _mul), \ .common = { \ .reg_ctrl = _reg_ctrl, \ - CCU_MIX_INITHW(_name, _parent, spacemit_ccu_factor_gate_ops, 0) \ + CCU_MIX_INITHW(_name, _parent, spacemit_ccu_factor_gate_ops, _flags) \ } \ } +#define CCU_FACTOR_GATE_DEFINE(_name, _parent, _reg_ctrl, _mask_gate, _div, \ + _mul) \ + CCU_FACTOR_GATE_FLAGS_DEFINE(_name, _parent, _reg_ctrl, _mask_gate, _div, \ + _mul, 0) + #define CCU_MUX_GATE_DEFINE(_name, _parents, _reg_ctrl, _shift, _width, \ _mask_gate, _flags) \ static struct ccu_mix _name = { \ diff --git a/drivers/clk/spacemit/ccu_pll.c b/drivers/clk/spacemit/ccu_pll.c index 4427dcfbbb97..45f540073a65 100644 --- a/drivers/clk/spacemit/ccu_pll.c +++ b/drivers/clk/spacemit/ccu_pll.c @@ -122,7 +122,7 @@ static unsigned long ccu_pll_recalc_rate(struct clk_hw *hw, WARN_ON_ONCE(!entry); - return entry ? entry->rate : -EINVAL; + return entry ? entry->rate : 0; } static long ccu_pll_round_rate(struct clk_hw *hw, unsigned long rate, |