162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * 462306a36Sopenharmony_ci * Copyright (C) 2011-2012 John Crispin <john@phrozen.org> 562306a36Sopenharmony_ci * Copyright (C) 2013-2015 Lantiq Beteiligungs-GmbH & Co.KG 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include <linux/ioport.h> 962306a36Sopenharmony_ci#include <linux/export.h> 1062306a36Sopenharmony_ci#include <linux/clkdev.h> 1162306a36Sopenharmony_ci#include <linux/spinlock.h> 1262306a36Sopenharmony_ci#include <linux/of.h> 1362306a36Sopenharmony_ci#include <linux/of_address.h> 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci#include <lantiq_soc.h> 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci#include "../clk.h" 1862306a36Sopenharmony_ci#include "../prom.h" 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci/* clock control register for legacy */ 2162306a36Sopenharmony_ci#define CGU_IFCCR 0x0018 2262306a36Sopenharmony_ci#define CGU_IFCCR_VR9 0x0024 2362306a36Sopenharmony_ci/* system clock register for legacy */ 2462306a36Sopenharmony_ci#define CGU_SYS 0x0010 2562306a36Sopenharmony_ci/* pci control register */ 2662306a36Sopenharmony_ci#define CGU_PCICR 0x0034 2762306a36Sopenharmony_ci#define CGU_PCICR_VR9 0x0038 2862306a36Sopenharmony_ci/* ephy configuration register */ 2962306a36Sopenharmony_ci#define CGU_EPHY 0x10 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci/* Legacy PMU register for ar9, ase, danube */ 3262306a36Sopenharmony_ci/* power control register */ 3362306a36Sopenharmony_ci#define PMU_PWDCR 0x1C 3462306a36Sopenharmony_ci/* power status register */ 3562306a36Sopenharmony_ci#define PMU_PWDSR 0x20 3662306a36Sopenharmony_ci/* power control register */ 3762306a36Sopenharmony_ci#define PMU_PWDCR1 0x24 3862306a36Sopenharmony_ci/* power status register */ 3962306a36Sopenharmony_ci#define PMU_PWDSR1 0x28 4062306a36Sopenharmony_ci/* power control register */ 4162306a36Sopenharmony_ci#define PWDCR(x) ((x) ? (PMU_PWDCR1) : (PMU_PWDCR)) 4262306a36Sopenharmony_ci/* power status register */ 4362306a36Sopenharmony_ci#define PWDSR(x) ((x) ? (PMU_PWDSR1) : (PMU_PWDSR)) 4462306a36Sopenharmony_ci 4562306a36Sopenharmony_ci 4662306a36Sopenharmony_ci/* PMU register for ar10 and grx390 */ 4762306a36Sopenharmony_ci 4862306a36Sopenharmony_ci/* First register set */ 4962306a36Sopenharmony_ci#define PMU_CLK_SR 0x20 /* status */ 5062306a36Sopenharmony_ci#define PMU_CLK_CR_A 0x24 /* Enable */ 5162306a36Sopenharmony_ci#define PMU_CLK_CR_B 0x28 /* Disable */ 5262306a36Sopenharmony_ci/* Second register set */ 5362306a36Sopenharmony_ci#define PMU_CLK_SR1 0x30 /* status */ 5462306a36Sopenharmony_ci#define PMU_CLK_CR1_A 0x34 /* Enable */ 5562306a36Sopenharmony_ci#define PMU_CLK_CR1_B 0x38 /* Disable */ 5662306a36Sopenharmony_ci/* Third register set */ 5762306a36Sopenharmony_ci#define PMU_ANA_SR 0x40 /* status */ 5862306a36Sopenharmony_ci#define PMU_ANA_CR_A 0x44 /* Enable */ 5962306a36Sopenharmony_ci#define PMU_ANA_CR_B 0x48 /* Disable */ 6062306a36Sopenharmony_ci 6162306a36Sopenharmony_ci/* Status */ 6262306a36Sopenharmony_cistatic u32 pmu_clk_sr[] = { 6362306a36Sopenharmony_ci PMU_CLK_SR, 6462306a36Sopenharmony_ci PMU_CLK_SR1, 6562306a36Sopenharmony_ci PMU_ANA_SR, 6662306a36Sopenharmony_ci}; 6762306a36Sopenharmony_ci 6862306a36Sopenharmony_ci/* Enable */ 6962306a36Sopenharmony_cistatic u32 pmu_clk_cr_a[] = { 7062306a36Sopenharmony_ci PMU_CLK_CR_A, 7162306a36Sopenharmony_ci PMU_CLK_CR1_A, 7262306a36Sopenharmony_ci PMU_ANA_CR_A, 7362306a36Sopenharmony_ci}; 7462306a36Sopenharmony_ci 7562306a36Sopenharmony_ci/* Disable */ 7662306a36Sopenharmony_cistatic u32 pmu_clk_cr_b[] = { 7762306a36Sopenharmony_ci PMU_CLK_CR_B, 7862306a36Sopenharmony_ci PMU_CLK_CR1_B, 7962306a36Sopenharmony_ci PMU_ANA_CR_B, 8062306a36Sopenharmony_ci}; 8162306a36Sopenharmony_ci 8262306a36Sopenharmony_ci#define PWDCR_EN_XRX(x) (pmu_clk_cr_a[(x)]) 8362306a36Sopenharmony_ci#define PWDCR_DIS_XRX(x) (pmu_clk_cr_b[(x)]) 8462306a36Sopenharmony_ci#define PWDSR_XRX(x) (pmu_clk_sr[(x)]) 8562306a36Sopenharmony_ci 8662306a36Sopenharmony_ci/* clock gates that we can en/disable */ 8762306a36Sopenharmony_ci#define PMU_USB0_P BIT(0) 8862306a36Sopenharmony_ci#define PMU_ASE_SDIO BIT(2) /* ASE special */ 8962306a36Sopenharmony_ci#define PMU_PCI BIT(4) 9062306a36Sopenharmony_ci#define PMU_DMA BIT(5) 9162306a36Sopenharmony_ci#define PMU_USB0 BIT(6) 9262306a36Sopenharmony_ci#define PMU_ASC0 BIT(7) 9362306a36Sopenharmony_ci#define PMU_EPHY BIT(7) /* ase */ 9462306a36Sopenharmony_ci#define PMU_USIF BIT(7) /* from vr9 until grx390 */ 9562306a36Sopenharmony_ci#define PMU_SPI BIT(8) 9662306a36Sopenharmony_ci#define PMU_DFE BIT(9) 9762306a36Sopenharmony_ci#define PMU_EBU BIT(10) 9862306a36Sopenharmony_ci#define PMU_STP BIT(11) 9962306a36Sopenharmony_ci#define PMU_GPT BIT(12) 10062306a36Sopenharmony_ci#define PMU_AHBS BIT(13) /* vr9 */ 10162306a36Sopenharmony_ci#define PMU_FPI BIT(14) 10262306a36Sopenharmony_ci#define PMU_AHBM BIT(15) 10362306a36Sopenharmony_ci#define PMU_SDIO BIT(16) /* danube, ar9, vr9 */ 10462306a36Sopenharmony_ci#define PMU_ASC1 BIT(17) 10562306a36Sopenharmony_ci#define PMU_PPE_QSB BIT(18) 10662306a36Sopenharmony_ci#define PMU_PPE_SLL01 BIT(19) 10762306a36Sopenharmony_ci#define PMU_DEU BIT(20) 10862306a36Sopenharmony_ci#define PMU_PPE_TC BIT(21) 10962306a36Sopenharmony_ci#define PMU_PPE_EMA BIT(22) 11062306a36Sopenharmony_ci#define PMU_PPE_DPLUM BIT(23) 11162306a36Sopenharmony_ci#define PMU_PPE_DP BIT(23) 11262306a36Sopenharmony_ci#define PMU_PPE_DPLUS BIT(24) 11362306a36Sopenharmony_ci#define PMU_USB1_P BIT(26) 11462306a36Sopenharmony_ci#define PMU_GPHY3 BIT(26) /* grx390 */ 11562306a36Sopenharmony_ci#define PMU_USB1 BIT(27) 11662306a36Sopenharmony_ci#define PMU_SWITCH BIT(28) 11762306a36Sopenharmony_ci#define PMU_PPE_TOP BIT(29) 11862306a36Sopenharmony_ci#define PMU_GPHY0 BIT(29) /* ar10, xrx390 */ 11962306a36Sopenharmony_ci#define PMU_GPHY BIT(30) 12062306a36Sopenharmony_ci#define PMU_GPHY1 BIT(30) /* ar10, xrx390 */ 12162306a36Sopenharmony_ci#define PMU_PCIE_CLK BIT(31) 12262306a36Sopenharmony_ci#define PMU_GPHY2 BIT(31) /* ar10, xrx390 */ 12362306a36Sopenharmony_ci 12462306a36Sopenharmony_ci#define PMU1_PCIE_PHY BIT(0) /* vr9-specific,moved in ar10/grx390 */ 12562306a36Sopenharmony_ci#define PMU1_PCIE_CTL BIT(1) 12662306a36Sopenharmony_ci#define PMU1_PCIE_PDI BIT(4) 12762306a36Sopenharmony_ci#define PMU1_PCIE_MSI BIT(5) 12862306a36Sopenharmony_ci#define PMU1_CKE BIT(6) 12962306a36Sopenharmony_ci#define PMU1_PCIE1_CTL BIT(17) 13062306a36Sopenharmony_ci#define PMU1_PCIE1_PDI BIT(20) 13162306a36Sopenharmony_ci#define PMU1_PCIE1_MSI BIT(21) 13262306a36Sopenharmony_ci#define PMU1_PCIE2_CTL BIT(25) 13362306a36Sopenharmony_ci#define PMU1_PCIE2_PDI BIT(26) 13462306a36Sopenharmony_ci#define PMU1_PCIE2_MSI BIT(27) 13562306a36Sopenharmony_ci 13662306a36Sopenharmony_ci#define PMU_ANALOG_USB0_P BIT(0) 13762306a36Sopenharmony_ci#define PMU_ANALOG_USB1_P BIT(1) 13862306a36Sopenharmony_ci#define PMU_ANALOG_PCIE0_P BIT(8) 13962306a36Sopenharmony_ci#define PMU_ANALOG_PCIE1_P BIT(9) 14062306a36Sopenharmony_ci#define PMU_ANALOG_PCIE2_P BIT(10) 14162306a36Sopenharmony_ci#define PMU_ANALOG_DSL_AFE BIT(16) 14262306a36Sopenharmony_ci#define PMU_ANALOG_DCDC_2V5 BIT(17) 14362306a36Sopenharmony_ci#define PMU_ANALOG_DCDC_1VX BIT(18) 14462306a36Sopenharmony_ci#define PMU_ANALOG_DCDC_1V0 BIT(19) 14562306a36Sopenharmony_ci 14662306a36Sopenharmony_ci#define pmu_w32(x, y) ltq_w32((x), pmu_membase + (y)) 14762306a36Sopenharmony_ci#define pmu_r32(x) ltq_r32(pmu_membase + (x)) 14862306a36Sopenharmony_ci 14962306a36Sopenharmony_cistatic void __iomem *pmu_membase; 15062306a36Sopenharmony_civoid __iomem *ltq_cgu_membase; 15162306a36Sopenharmony_civoid __iomem *ltq_ebu_membase; 15262306a36Sopenharmony_ci 15362306a36Sopenharmony_cistatic u32 ifccr = CGU_IFCCR; 15462306a36Sopenharmony_cistatic u32 pcicr = CGU_PCICR; 15562306a36Sopenharmony_ci 15662306a36Sopenharmony_cistatic DEFINE_SPINLOCK(g_pmu_lock); 15762306a36Sopenharmony_ci 15862306a36Sopenharmony_ci/* legacy function kept alive to ease clkdev transition */ 15962306a36Sopenharmony_civoid ltq_pmu_enable(unsigned int module) 16062306a36Sopenharmony_ci{ 16162306a36Sopenharmony_ci int retry = 1000000; 16262306a36Sopenharmony_ci 16362306a36Sopenharmony_ci spin_lock(&g_pmu_lock); 16462306a36Sopenharmony_ci pmu_w32(pmu_r32(PMU_PWDCR) & ~module, PMU_PWDCR); 16562306a36Sopenharmony_ci do {} while (--retry && (pmu_r32(PMU_PWDSR) & module)); 16662306a36Sopenharmony_ci spin_unlock(&g_pmu_lock); 16762306a36Sopenharmony_ci 16862306a36Sopenharmony_ci if (!retry) 16962306a36Sopenharmony_ci panic("activating PMU module failed!"); 17062306a36Sopenharmony_ci} 17162306a36Sopenharmony_ciEXPORT_SYMBOL(ltq_pmu_enable); 17262306a36Sopenharmony_ci 17362306a36Sopenharmony_ci/* legacy function kept alive to ease clkdev transition */ 17462306a36Sopenharmony_civoid ltq_pmu_disable(unsigned int module) 17562306a36Sopenharmony_ci{ 17662306a36Sopenharmony_ci int retry = 1000000; 17762306a36Sopenharmony_ci 17862306a36Sopenharmony_ci spin_lock(&g_pmu_lock); 17962306a36Sopenharmony_ci pmu_w32(pmu_r32(PMU_PWDCR) | module, PMU_PWDCR); 18062306a36Sopenharmony_ci do {} while (--retry && (!(pmu_r32(PMU_PWDSR) & module))); 18162306a36Sopenharmony_ci spin_unlock(&g_pmu_lock); 18262306a36Sopenharmony_ci 18362306a36Sopenharmony_ci if (!retry) 18462306a36Sopenharmony_ci pr_warn("deactivating PMU module failed!"); 18562306a36Sopenharmony_ci} 18662306a36Sopenharmony_ciEXPORT_SYMBOL(ltq_pmu_disable); 18762306a36Sopenharmony_ci 18862306a36Sopenharmony_ci/* enable a hw clock */ 18962306a36Sopenharmony_cistatic int cgu_enable(struct clk *clk) 19062306a36Sopenharmony_ci{ 19162306a36Sopenharmony_ci ltq_cgu_w32(ltq_cgu_r32(ifccr) | clk->bits, ifccr); 19262306a36Sopenharmony_ci return 0; 19362306a36Sopenharmony_ci} 19462306a36Sopenharmony_ci 19562306a36Sopenharmony_ci/* disable a hw clock */ 19662306a36Sopenharmony_cistatic void cgu_disable(struct clk *clk) 19762306a36Sopenharmony_ci{ 19862306a36Sopenharmony_ci ltq_cgu_w32(ltq_cgu_r32(ifccr) & ~clk->bits, ifccr); 19962306a36Sopenharmony_ci} 20062306a36Sopenharmony_ci 20162306a36Sopenharmony_ci/* enable a clock gate */ 20262306a36Sopenharmony_cistatic int pmu_enable(struct clk *clk) 20362306a36Sopenharmony_ci{ 20462306a36Sopenharmony_ci int retry = 1000000; 20562306a36Sopenharmony_ci 20662306a36Sopenharmony_ci if (of_machine_is_compatible("lantiq,ar10") 20762306a36Sopenharmony_ci || of_machine_is_compatible("lantiq,grx390")) { 20862306a36Sopenharmony_ci pmu_w32(clk->bits, PWDCR_EN_XRX(clk->module)); 20962306a36Sopenharmony_ci do {} while (--retry && 21062306a36Sopenharmony_ci (!(pmu_r32(PWDSR_XRX(clk->module)) & clk->bits))); 21162306a36Sopenharmony_ci 21262306a36Sopenharmony_ci } else { 21362306a36Sopenharmony_ci spin_lock(&g_pmu_lock); 21462306a36Sopenharmony_ci pmu_w32(pmu_r32(PWDCR(clk->module)) & ~clk->bits, 21562306a36Sopenharmony_ci PWDCR(clk->module)); 21662306a36Sopenharmony_ci do {} while (--retry && 21762306a36Sopenharmony_ci (pmu_r32(PWDSR(clk->module)) & clk->bits)); 21862306a36Sopenharmony_ci spin_unlock(&g_pmu_lock); 21962306a36Sopenharmony_ci } 22062306a36Sopenharmony_ci 22162306a36Sopenharmony_ci if (!retry) 22262306a36Sopenharmony_ci panic("activating PMU module failed!"); 22362306a36Sopenharmony_ci 22462306a36Sopenharmony_ci return 0; 22562306a36Sopenharmony_ci} 22662306a36Sopenharmony_ci 22762306a36Sopenharmony_ci/* disable a clock gate */ 22862306a36Sopenharmony_cistatic void pmu_disable(struct clk *clk) 22962306a36Sopenharmony_ci{ 23062306a36Sopenharmony_ci int retry = 1000000; 23162306a36Sopenharmony_ci 23262306a36Sopenharmony_ci if (of_machine_is_compatible("lantiq,ar10") 23362306a36Sopenharmony_ci || of_machine_is_compatible("lantiq,grx390")) { 23462306a36Sopenharmony_ci pmu_w32(clk->bits, PWDCR_DIS_XRX(clk->module)); 23562306a36Sopenharmony_ci do {} while (--retry && 23662306a36Sopenharmony_ci (pmu_r32(PWDSR_XRX(clk->module)) & clk->bits)); 23762306a36Sopenharmony_ci } else { 23862306a36Sopenharmony_ci spin_lock(&g_pmu_lock); 23962306a36Sopenharmony_ci pmu_w32(pmu_r32(PWDCR(clk->module)) | clk->bits, 24062306a36Sopenharmony_ci PWDCR(clk->module)); 24162306a36Sopenharmony_ci do {} while (--retry && 24262306a36Sopenharmony_ci (!(pmu_r32(PWDSR(clk->module)) & clk->bits))); 24362306a36Sopenharmony_ci spin_unlock(&g_pmu_lock); 24462306a36Sopenharmony_ci } 24562306a36Sopenharmony_ci 24662306a36Sopenharmony_ci if (!retry) 24762306a36Sopenharmony_ci pr_warn("deactivating PMU module failed!"); 24862306a36Sopenharmony_ci} 24962306a36Sopenharmony_ci 25062306a36Sopenharmony_ci/* the pci enable helper */ 25162306a36Sopenharmony_cistatic int pci_enable(struct clk *clk) 25262306a36Sopenharmony_ci{ 25362306a36Sopenharmony_ci unsigned int val = ltq_cgu_r32(ifccr); 25462306a36Sopenharmony_ci /* set bus clock speed */ 25562306a36Sopenharmony_ci if (of_machine_is_compatible("lantiq,ar9") || 25662306a36Sopenharmony_ci of_machine_is_compatible("lantiq,vr9")) { 25762306a36Sopenharmony_ci val &= ~0x1f00000; 25862306a36Sopenharmony_ci if (clk->rate == CLOCK_33M) 25962306a36Sopenharmony_ci val |= 0xe00000; 26062306a36Sopenharmony_ci else 26162306a36Sopenharmony_ci val |= 0x700000; /* 62.5M */ 26262306a36Sopenharmony_ci } else { 26362306a36Sopenharmony_ci val &= ~0xf00000; 26462306a36Sopenharmony_ci if (clk->rate == CLOCK_33M) 26562306a36Sopenharmony_ci val |= 0x800000; 26662306a36Sopenharmony_ci else 26762306a36Sopenharmony_ci val |= 0x400000; /* 62.5M */ 26862306a36Sopenharmony_ci } 26962306a36Sopenharmony_ci ltq_cgu_w32(val, ifccr); 27062306a36Sopenharmony_ci pmu_enable(clk); 27162306a36Sopenharmony_ci return 0; 27262306a36Sopenharmony_ci} 27362306a36Sopenharmony_ci 27462306a36Sopenharmony_ci/* enable the external clock as a source */ 27562306a36Sopenharmony_cistatic int pci_ext_enable(struct clk *clk) 27662306a36Sopenharmony_ci{ 27762306a36Sopenharmony_ci ltq_cgu_w32(ltq_cgu_r32(ifccr) & ~(1 << 16), ifccr); 27862306a36Sopenharmony_ci ltq_cgu_w32((1 << 30), pcicr); 27962306a36Sopenharmony_ci return 0; 28062306a36Sopenharmony_ci} 28162306a36Sopenharmony_ci 28262306a36Sopenharmony_ci/* disable the external clock as a source */ 28362306a36Sopenharmony_cistatic void pci_ext_disable(struct clk *clk) 28462306a36Sopenharmony_ci{ 28562306a36Sopenharmony_ci ltq_cgu_w32(ltq_cgu_r32(ifccr) | (1 << 16), ifccr); 28662306a36Sopenharmony_ci ltq_cgu_w32((1 << 31) | (1 << 30), pcicr); 28762306a36Sopenharmony_ci} 28862306a36Sopenharmony_ci 28962306a36Sopenharmony_ci/* enable a clockout source */ 29062306a36Sopenharmony_cistatic int clkout_enable(struct clk *clk) 29162306a36Sopenharmony_ci{ 29262306a36Sopenharmony_ci int i; 29362306a36Sopenharmony_ci 29462306a36Sopenharmony_ci /* get the correct rate */ 29562306a36Sopenharmony_ci for (i = 0; i < 4; i++) { 29662306a36Sopenharmony_ci if (clk->rates[i] == clk->rate) { 29762306a36Sopenharmony_ci int shift = 14 - (2 * clk->module); 29862306a36Sopenharmony_ci int enable = 7 - clk->module; 29962306a36Sopenharmony_ci unsigned int val = ltq_cgu_r32(ifccr); 30062306a36Sopenharmony_ci 30162306a36Sopenharmony_ci val &= ~(3 << shift); 30262306a36Sopenharmony_ci val |= i << shift; 30362306a36Sopenharmony_ci val |= enable; 30462306a36Sopenharmony_ci ltq_cgu_w32(val, ifccr); 30562306a36Sopenharmony_ci return 0; 30662306a36Sopenharmony_ci } 30762306a36Sopenharmony_ci } 30862306a36Sopenharmony_ci return -1; 30962306a36Sopenharmony_ci} 31062306a36Sopenharmony_ci 31162306a36Sopenharmony_ci/* manage the clock gates via PMU */ 31262306a36Sopenharmony_cistatic void clkdev_add_pmu(const char *dev, const char *con, bool deactivate, 31362306a36Sopenharmony_ci unsigned int module, unsigned int bits) 31462306a36Sopenharmony_ci{ 31562306a36Sopenharmony_ci struct clk *clk = kzalloc(sizeof(struct clk), GFP_KERNEL); 31662306a36Sopenharmony_ci 31762306a36Sopenharmony_ci if (!clk) 31862306a36Sopenharmony_ci return; 31962306a36Sopenharmony_ci clk->cl.dev_id = dev; 32062306a36Sopenharmony_ci clk->cl.con_id = con; 32162306a36Sopenharmony_ci clk->cl.clk = clk; 32262306a36Sopenharmony_ci clk->enable = pmu_enable; 32362306a36Sopenharmony_ci clk->disable = pmu_disable; 32462306a36Sopenharmony_ci clk->module = module; 32562306a36Sopenharmony_ci clk->bits = bits; 32662306a36Sopenharmony_ci if (deactivate) { 32762306a36Sopenharmony_ci /* 32862306a36Sopenharmony_ci * Disable it during the initialization. Module should enable 32962306a36Sopenharmony_ci * when used 33062306a36Sopenharmony_ci */ 33162306a36Sopenharmony_ci pmu_disable(clk); 33262306a36Sopenharmony_ci } 33362306a36Sopenharmony_ci clkdev_add(&clk->cl); 33462306a36Sopenharmony_ci} 33562306a36Sopenharmony_ci 33662306a36Sopenharmony_ci/* manage the clock generator */ 33762306a36Sopenharmony_cistatic void clkdev_add_cgu(const char *dev, const char *con, 33862306a36Sopenharmony_ci unsigned int bits) 33962306a36Sopenharmony_ci{ 34062306a36Sopenharmony_ci struct clk *clk = kzalloc(sizeof(struct clk), GFP_KERNEL); 34162306a36Sopenharmony_ci 34262306a36Sopenharmony_ci if (!clk) 34362306a36Sopenharmony_ci return; 34462306a36Sopenharmony_ci clk->cl.dev_id = dev; 34562306a36Sopenharmony_ci clk->cl.con_id = con; 34662306a36Sopenharmony_ci clk->cl.clk = clk; 34762306a36Sopenharmony_ci clk->enable = cgu_enable; 34862306a36Sopenharmony_ci clk->disable = cgu_disable; 34962306a36Sopenharmony_ci clk->bits = bits; 35062306a36Sopenharmony_ci clkdev_add(&clk->cl); 35162306a36Sopenharmony_ci} 35262306a36Sopenharmony_ci 35362306a36Sopenharmony_ci/* pci needs its own enable function as the setup is a bit more complex */ 35462306a36Sopenharmony_cistatic unsigned long valid_pci_rates[] = {CLOCK_33M, CLOCK_62_5M, 0}; 35562306a36Sopenharmony_ci 35662306a36Sopenharmony_cistatic void clkdev_add_pci(void) 35762306a36Sopenharmony_ci{ 35862306a36Sopenharmony_ci struct clk *clk = kzalloc(sizeof(struct clk), GFP_KERNEL); 35962306a36Sopenharmony_ci struct clk *clk_ext = kzalloc(sizeof(struct clk), GFP_KERNEL); 36062306a36Sopenharmony_ci 36162306a36Sopenharmony_ci /* main pci clock */ 36262306a36Sopenharmony_ci if (clk) { 36362306a36Sopenharmony_ci clk->cl.dev_id = "17000000.pci"; 36462306a36Sopenharmony_ci clk->cl.con_id = NULL; 36562306a36Sopenharmony_ci clk->cl.clk = clk; 36662306a36Sopenharmony_ci clk->rate = CLOCK_33M; 36762306a36Sopenharmony_ci clk->rates = valid_pci_rates; 36862306a36Sopenharmony_ci clk->enable = pci_enable; 36962306a36Sopenharmony_ci clk->disable = pmu_disable; 37062306a36Sopenharmony_ci clk->module = 0; 37162306a36Sopenharmony_ci clk->bits = PMU_PCI; 37262306a36Sopenharmony_ci clkdev_add(&clk->cl); 37362306a36Sopenharmony_ci } 37462306a36Sopenharmony_ci 37562306a36Sopenharmony_ci /* use internal/external bus clock */ 37662306a36Sopenharmony_ci if (clk_ext) { 37762306a36Sopenharmony_ci clk_ext->cl.dev_id = "17000000.pci"; 37862306a36Sopenharmony_ci clk_ext->cl.con_id = "external"; 37962306a36Sopenharmony_ci clk_ext->cl.clk = clk_ext; 38062306a36Sopenharmony_ci clk_ext->enable = pci_ext_enable; 38162306a36Sopenharmony_ci clk_ext->disable = pci_ext_disable; 38262306a36Sopenharmony_ci clkdev_add(&clk_ext->cl); 38362306a36Sopenharmony_ci } 38462306a36Sopenharmony_ci} 38562306a36Sopenharmony_ci 38662306a36Sopenharmony_ci/* xway socs can generate clocks on gpio pins */ 38762306a36Sopenharmony_cistatic unsigned long valid_clkout_rates[4][5] = { 38862306a36Sopenharmony_ci {CLOCK_32_768K, CLOCK_1_536M, CLOCK_2_5M, CLOCK_12M, 0}, 38962306a36Sopenharmony_ci {CLOCK_40M, CLOCK_12M, CLOCK_24M, CLOCK_48M, 0}, 39062306a36Sopenharmony_ci {CLOCK_25M, CLOCK_40M, CLOCK_30M, CLOCK_60M, 0}, 39162306a36Sopenharmony_ci {CLOCK_12M, CLOCK_50M, CLOCK_32_768K, CLOCK_25M, 0}, 39262306a36Sopenharmony_ci}; 39362306a36Sopenharmony_ci 39462306a36Sopenharmony_cistatic void clkdev_add_clkout(void) 39562306a36Sopenharmony_ci{ 39662306a36Sopenharmony_ci int i; 39762306a36Sopenharmony_ci 39862306a36Sopenharmony_ci for (i = 0; i < 4; i++) { 39962306a36Sopenharmony_ci struct clk *clk; 40062306a36Sopenharmony_ci char *name; 40162306a36Sopenharmony_ci 40262306a36Sopenharmony_ci name = kzalloc(sizeof("clkout0"), GFP_KERNEL); 40362306a36Sopenharmony_ci if (!name) 40462306a36Sopenharmony_ci continue; 40562306a36Sopenharmony_ci sprintf(name, "clkout%d", i); 40662306a36Sopenharmony_ci 40762306a36Sopenharmony_ci clk = kzalloc(sizeof(struct clk), GFP_KERNEL); 40862306a36Sopenharmony_ci if (!clk) { 40962306a36Sopenharmony_ci kfree(name); 41062306a36Sopenharmony_ci continue; 41162306a36Sopenharmony_ci } 41262306a36Sopenharmony_ci clk->cl.dev_id = "1f103000.cgu"; 41362306a36Sopenharmony_ci clk->cl.con_id = name; 41462306a36Sopenharmony_ci clk->cl.clk = clk; 41562306a36Sopenharmony_ci clk->rate = 0; 41662306a36Sopenharmony_ci clk->rates = valid_clkout_rates[i]; 41762306a36Sopenharmony_ci clk->enable = clkout_enable; 41862306a36Sopenharmony_ci clk->module = i; 41962306a36Sopenharmony_ci clkdev_add(&clk->cl); 42062306a36Sopenharmony_ci } 42162306a36Sopenharmony_ci} 42262306a36Sopenharmony_ci 42362306a36Sopenharmony_ci/* bring up all register ranges that we need for basic system control */ 42462306a36Sopenharmony_civoid __init ltq_soc_init(void) 42562306a36Sopenharmony_ci{ 42662306a36Sopenharmony_ci struct resource res_pmu, res_cgu, res_ebu; 42762306a36Sopenharmony_ci struct device_node *np_pmu = 42862306a36Sopenharmony_ci of_find_compatible_node(NULL, NULL, "lantiq,pmu-xway"); 42962306a36Sopenharmony_ci struct device_node *np_cgu = 43062306a36Sopenharmony_ci of_find_compatible_node(NULL, NULL, "lantiq,cgu-xway"); 43162306a36Sopenharmony_ci struct device_node *np_ebu = 43262306a36Sopenharmony_ci of_find_compatible_node(NULL, NULL, "lantiq,ebu-xway"); 43362306a36Sopenharmony_ci 43462306a36Sopenharmony_ci /* check if all the core register ranges are available */ 43562306a36Sopenharmony_ci if (!np_pmu || !np_cgu || !np_ebu) 43662306a36Sopenharmony_ci panic("Failed to load core nodes from devicetree"); 43762306a36Sopenharmony_ci 43862306a36Sopenharmony_ci if (of_address_to_resource(np_pmu, 0, &res_pmu) || 43962306a36Sopenharmony_ci of_address_to_resource(np_cgu, 0, &res_cgu) || 44062306a36Sopenharmony_ci of_address_to_resource(np_ebu, 0, &res_ebu)) 44162306a36Sopenharmony_ci panic("Failed to get core resources"); 44262306a36Sopenharmony_ci 44362306a36Sopenharmony_ci of_node_put(np_pmu); 44462306a36Sopenharmony_ci of_node_put(np_cgu); 44562306a36Sopenharmony_ci of_node_put(np_ebu); 44662306a36Sopenharmony_ci 44762306a36Sopenharmony_ci if (!request_mem_region(res_pmu.start, resource_size(&res_pmu), 44862306a36Sopenharmony_ci res_pmu.name) || 44962306a36Sopenharmony_ci !request_mem_region(res_cgu.start, resource_size(&res_cgu), 45062306a36Sopenharmony_ci res_cgu.name) || 45162306a36Sopenharmony_ci !request_mem_region(res_ebu.start, resource_size(&res_ebu), 45262306a36Sopenharmony_ci res_ebu.name)) 45362306a36Sopenharmony_ci pr_err("Failed to request core resources"); 45462306a36Sopenharmony_ci 45562306a36Sopenharmony_ci pmu_membase = ioremap(res_pmu.start, resource_size(&res_pmu)); 45662306a36Sopenharmony_ci ltq_cgu_membase = ioremap(res_cgu.start, 45762306a36Sopenharmony_ci resource_size(&res_cgu)); 45862306a36Sopenharmony_ci ltq_ebu_membase = ioremap(res_ebu.start, 45962306a36Sopenharmony_ci resource_size(&res_ebu)); 46062306a36Sopenharmony_ci if (!pmu_membase || !ltq_cgu_membase || !ltq_ebu_membase) 46162306a36Sopenharmony_ci panic("Failed to remap core resources"); 46262306a36Sopenharmony_ci 46362306a36Sopenharmony_ci /* make sure to unprotect the memory region where flash is located */ 46462306a36Sopenharmony_ci ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_BUSCON0) & ~EBU_WRDIS, LTQ_EBU_BUSCON0); 46562306a36Sopenharmony_ci 46662306a36Sopenharmony_ci /* add our generic xway clocks */ 46762306a36Sopenharmony_ci clkdev_add_pmu("10000000.fpi", NULL, 0, 0, PMU_FPI); 46862306a36Sopenharmony_ci clkdev_add_pmu("1e100a00.gptu", NULL, 1, 0, PMU_GPT); 46962306a36Sopenharmony_ci clkdev_add_pmu("1e100bb0.stp", NULL, 1, 0, PMU_STP); 47062306a36Sopenharmony_ci clkdev_add_pmu("1e100c00.serial", NULL, 0, 0, PMU_ASC1); 47162306a36Sopenharmony_ci clkdev_add_pmu("1e104100.dma", NULL, 1, 0, PMU_DMA); 47262306a36Sopenharmony_ci clkdev_add_pmu("1e100800.spi", NULL, 1, 0, PMU_SPI); 47362306a36Sopenharmony_ci clkdev_add_pmu("1e105300.ebu", NULL, 0, 0, PMU_EBU); 47462306a36Sopenharmony_ci clkdev_add_clkout(); 47562306a36Sopenharmony_ci 47662306a36Sopenharmony_ci /* add the soc dependent clocks */ 47762306a36Sopenharmony_ci if (of_machine_is_compatible("lantiq,vr9")) { 47862306a36Sopenharmony_ci ifccr = CGU_IFCCR_VR9; 47962306a36Sopenharmony_ci pcicr = CGU_PCICR_VR9; 48062306a36Sopenharmony_ci } else { 48162306a36Sopenharmony_ci clkdev_add_pmu("1e180000.etop", NULL, 1, 0, PMU_PPE); 48262306a36Sopenharmony_ci } 48362306a36Sopenharmony_ci 48462306a36Sopenharmony_ci if (!of_machine_is_compatible("lantiq,ase")) 48562306a36Sopenharmony_ci clkdev_add_pci(); 48662306a36Sopenharmony_ci 48762306a36Sopenharmony_ci if (of_machine_is_compatible("lantiq,grx390") || 48862306a36Sopenharmony_ci of_machine_is_compatible("lantiq,ar10")) { 48962306a36Sopenharmony_ci clkdev_add_pmu("1e108000.switch", "gphy0", 0, 0, PMU_GPHY0); 49062306a36Sopenharmony_ci clkdev_add_pmu("1e108000.switch", "gphy1", 0, 0, PMU_GPHY1); 49162306a36Sopenharmony_ci clkdev_add_pmu("1e108000.switch", "gphy2", 0, 0, PMU_GPHY2); 49262306a36Sopenharmony_ci clkdev_add_pmu("1f203018.usb2-phy", "phy", 1, 2, PMU_ANALOG_USB0_P); 49362306a36Sopenharmony_ci clkdev_add_pmu("1f203034.usb2-phy", "phy", 1, 2, PMU_ANALOG_USB1_P); 49462306a36Sopenharmony_ci /* rc 0 */ 49562306a36Sopenharmony_ci clkdev_add_pmu("1f106800.phy", "phy", 1, 2, PMU_ANALOG_PCIE0_P); 49662306a36Sopenharmony_ci clkdev_add_pmu("1d900000.pcie", "msi", 1, 1, PMU1_PCIE_MSI); 49762306a36Sopenharmony_ci clkdev_add_pmu("1f106800.phy", "pdi", 1, 1, PMU1_PCIE_PDI); 49862306a36Sopenharmony_ci clkdev_add_pmu("1d900000.pcie", "ctl", 1, 1, PMU1_PCIE_CTL); 49962306a36Sopenharmony_ci /* rc 1 */ 50062306a36Sopenharmony_ci clkdev_add_pmu("1f700400.phy", "phy", 1, 2, PMU_ANALOG_PCIE1_P); 50162306a36Sopenharmony_ci clkdev_add_pmu("19000000.pcie", "msi", 1, 1, PMU1_PCIE1_MSI); 50262306a36Sopenharmony_ci clkdev_add_pmu("1f700400.phy", "pdi", 1, 1, PMU1_PCIE1_PDI); 50362306a36Sopenharmony_ci clkdev_add_pmu("19000000.pcie", "ctl", 1, 1, PMU1_PCIE1_CTL); 50462306a36Sopenharmony_ci } 50562306a36Sopenharmony_ci 50662306a36Sopenharmony_ci if (of_machine_is_compatible("lantiq,ase")) { 50762306a36Sopenharmony_ci if (ltq_cgu_r32(CGU_SYS) & (1 << 5)) 50862306a36Sopenharmony_ci clkdev_add_static(CLOCK_266M, CLOCK_133M, 50962306a36Sopenharmony_ci CLOCK_133M, CLOCK_266M); 51062306a36Sopenharmony_ci else 51162306a36Sopenharmony_ci clkdev_add_static(CLOCK_133M, CLOCK_133M, 51262306a36Sopenharmony_ci CLOCK_133M, CLOCK_133M); 51362306a36Sopenharmony_ci clkdev_add_pmu("1e101000.usb", "otg", 1, 0, PMU_USB0); 51462306a36Sopenharmony_ci clkdev_add_pmu("1f203018.usb2-phy", "phy", 1, 0, PMU_USB0_P); 51562306a36Sopenharmony_ci clkdev_add_pmu("1e180000.etop", "ppe", 1, 0, PMU_PPE); 51662306a36Sopenharmony_ci clkdev_add_cgu("1e180000.etop", "ephycgu", CGU_EPHY); 51762306a36Sopenharmony_ci clkdev_add_pmu("1e180000.etop", "ephy", 1, 0, PMU_EPHY); 51862306a36Sopenharmony_ci clkdev_add_pmu("1e103000.sdio", NULL, 1, 0, PMU_ASE_SDIO); 51962306a36Sopenharmony_ci clkdev_add_pmu("1e116000.mei", "dfe", 1, 0, PMU_DFE); 52062306a36Sopenharmony_ci } else if (of_machine_is_compatible("lantiq,grx390")) { 52162306a36Sopenharmony_ci clkdev_add_static(ltq_grx390_cpu_hz(), ltq_grx390_fpi_hz(), 52262306a36Sopenharmony_ci ltq_grx390_fpi_hz(), ltq_grx390_pp32_hz()); 52362306a36Sopenharmony_ci clkdev_add_pmu("1e108000.switch", "gphy3", 0, 0, PMU_GPHY3); 52462306a36Sopenharmony_ci clkdev_add_pmu("1e101000.usb", "otg", 1, 0, PMU_USB0); 52562306a36Sopenharmony_ci clkdev_add_pmu("1e106000.usb", "otg", 1, 0, PMU_USB1); 52662306a36Sopenharmony_ci /* rc 2 */ 52762306a36Sopenharmony_ci clkdev_add_pmu("1f106a00.pcie", "phy", 1, 2, PMU_ANALOG_PCIE2_P); 52862306a36Sopenharmony_ci clkdev_add_pmu("1a800000.pcie", "msi", 1, 1, PMU1_PCIE2_MSI); 52962306a36Sopenharmony_ci clkdev_add_pmu("1f106a00.pcie", "pdi", 1, 1, PMU1_PCIE2_PDI); 53062306a36Sopenharmony_ci clkdev_add_pmu("1a800000.pcie", "ctl", 1, 1, PMU1_PCIE2_CTL); 53162306a36Sopenharmony_ci clkdev_add_pmu("1e10b308.eth", NULL, 0, 0, PMU_SWITCH | PMU_PPE_DP); 53262306a36Sopenharmony_ci clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF); 53362306a36Sopenharmony_ci clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU); 53462306a36Sopenharmony_ci } else if (of_machine_is_compatible("lantiq,ar10")) { 53562306a36Sopenharmony_ci clkdev_add_static(ltq_ar10_cpu_hz(), ltq_ar10_fpi_hz(), 53662306a36Sopenharmony_ci ltq_ar10_fpi_hz(), ltq_ar10_pp32_hz()); 53762306a36Sopenharmony_ci clkdev_add_pmu("1e101000.usb", "otg", 1, 0, PMU_USB0); 53862306a36Sopenharmony_ci clkdev_add_pmu("1e106000.usb", "otg", 1, 0, PMU_USB1); 53962306a36Sopenharmony_ci clkdev_add_pmu("1e10b308.eth", NULL, 0, 0, PMU_SWITCH | 54062306a36Sopenharmony_ci PMU_PPE_DP | PMU_PPE_TC); 54162306a36Sopenharmony_ci clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF); 54262306a36Sopenharmony_ci clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU); 54362306a36Sopenharmony_ci clkdev_add_pmu("1e116000.mei", "afe", 1, 2, PMU_ANALOG_DSL_AFE); 54462306a36Sopenharmony_ci clkdev_add_pmu("1e116000.mei", "dfe", 1, 0, PMU_DFE); 54562306a36Sopenharmony_ci } else if (of_machine_is_compatible("lantiq,vr9")) { 54662306a36Sopenharmony_ci clkdev_add_static(ltq_vr9_cpu_hz(), ltq_vr9_fpi_hz(), 54762306a36Sopenharmony_ci ltq_vr9_fpi_hz(), ltq_vr9_pp32_hz()); 54862306a36Sopenharmony_ci clkdev_add_pmu("1f203018.usb2-phy", "phy", 1, 0, PMU_USB0_P); 54962306a36Sopenharmony_ci clkdev_add_pmu("1e101000.usb", "otg", 1, 0, PMU_USB0 | PMU_AHBM); 55062306a36Sopenharmony_ci clkdev_add_pmu("1f203034.usb2-phy", "phy", 1, 0, PMU_USB1_P); 55162306a36Sopenharmony_ci clkdev_add_pmu("1e106000.usb", "otg", 1, 0, PMU_USB1 | PMU_AHBM); 55262306a36Sopenharmony_ci clkdev_add_pmu("1f106800.phy", "phy", 1, 1, PMU1_PCIE_PHY); 55362306a36Sopenharmony_ci clkdev_add_pmu("1d900000.pcie", "bus", 1, 0, PMU_PCIE_CLK); 55462306a36Sopenharmony_ci clkdev_add_pmu("1d900000.pcie", "msi", 1, 1, PMU1_PCIE_MSI); 55562306a36Sopenharmony_ci clkdev_add_pmu("1f106800.phy", "pdi", 1, 1, PMU1_PCIE_PDI); 55662306a36Sopenharmony_ci clkdev_add_pmu("1d900000.pcie", "ctl", 1, 1, PMU1_PCIE_CTL); 55762306a36Sopenharmony_ci clkdev_add_pmu(NULL, "ahb", 1, 0, PMU_AHBM | PMU_AHBS); 55862306a36Sopenharmony_ci 55962306a36Sopenharmony_ci clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF); 56062306a36Sopenharmony_ci clkdev_add_pmu("1e10b308.eth", NULL, 0, 0, 56162306a36Sopenharmony_ci PMU_SWITCH | PMU_PPE_DPLUS | PMU_PPE_DPLUM | 56262306a36Sopenharmony_ci PMU_PPE_EMA | PMU_PPE_TC | PMU_PPE_SLL01 | 56362306a36Sopenharmony_ci PMU_PPE_QSB | PMU_PPE_TOP); 56462306a36Sopenharmony_ci clkdev_add_pmu("1e108000.switch", "gphy0", 0, 0, PMU_GPHY); 56562306a36Sopenharmony_ci clkdev_add_pmu("1e108000.switch", "gphy1", 0, 0, PMU_GPHY); 56662306a36Sopenharmony_ci clkdev_add_pmu("1e103000.sdio", NULL, 1, 0, PMU_SDIO); 56762306a36Sopenharmony_ci clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU); 56862306a36Sopenharmony_ci clkdev_add_pmu("1e116000.mei", "dfe", 1, 0, PMU_DFE); 56962306a36Sopenharmony_ci } else if (of_machine_is_compatible("lantiq,ar9")) { 57062306a36Sopenharmony_ci clkdev_add_static(ltq_ar9_cpu_hz(), ltq_ar9_fpi_hz(), 57162306a36Sopenharmony_ci ltq_ar9_fpi_hz(), CLOCK_250M); 57262306a36Sopenharmony_ci clkdev_add_pmu("1f203018.usb2-phy", "phy", 1, 0, PMU_USB0_P); 57362306a36Sopenharmony_ci clkdev_add_pmu("1e101000.usb", "otg", 1, 0, PMU_USB0 | PMU_AHBM); 57462306a36Sopenharmony_ci clkdev_add_pmu("1f203034.usb2-phy", "phy", 1, 0, PMU_USB1_P); 57562306a36Sopenharmony_ci clkdev_add_pmu("1e106000.usb", "otg", 1, 0, PMU_USB1 | PMU_AHBM); 57662306a36Sopenharmony_ci clkdev_add_pmu("1e180000.etop", "switch", 1, 0, PMU_SWITCH); 57762306a36Sopenharmony_ci clkdev_add_pmu("1e103000.sdio", NULL, 1, 0, PMU_SDIO); 57862306a36Sopenharmony_ci clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU); 57962306a36Sopenharmony_ci clkdev_add_pmu("1e116000.mei", "dfe", 1, 0, PMU_DFE); 58062306a36Sopenharmony_ci clkdev_add_pmu("1e100400.serial", NULL, 1, 0, PMU_ASC0); 58162306a36Sopenharmony_ci } else { 58262306a36Sopenharmony_ci clkdev_add_static(ltq_danube_cpu_hz(), ltq_danube_fpi_hz(), 58362306a36Sopenharmony_ci ltq_danube_fpi_hz(), ltq_danube_pp32_hz()); 58462306a36Sopenharmony_ci clkdev_add_pmu("1e101000.usb", "otg", 1, 0, PMU_USB0 | PMU_AHBM); 58562306a36Sopenharmony_ci clkdev_add_pmu("1f203018.usb2-phy", "phy", 1, 0, PMU_USB0_P); 58662306a36Sopenharmony_ci clkdev_add_pmu("1e103000.sdio", NULL, 1, 0, PMU_SDIO); 58762306a36Sopenharmony_ci clkdev_add_pmu("1e103100.deu", NULL, 1, 0, PMU_DEU); 58862306a36Sopenharmony_ci clkdev_add_pmu("1e116000.mei", "dfe", 1, 0, PMU_DFE); 58962306a36Sopenharmony_ci clkdev_add_pmu("1e100400.serial", NULL, 1, 0, PMU_ASC0); 59062306a36Sopenharmony_ci } 59162306a36Sopenharmony_ci} 592