diff options
Diffstat (limited to 'roms/u-boot/drivers/clk/altera')
| -rw-r--r-- | roms/u-boot/drivers/clk/altera/Makefile | 7 | ||||
| -rw-r--r-- | roms/u-boot/drivers/clk/altera/clk-agilex.c | 663 | ||||
| -rw-r--r-- | roms/u-boot/drivers/clk/altera/clk-agilex.h | 241 | ||||
| -rw-r--r-- | roms/u-boot/drivers/clk/altera/clk-arria10.c | 364 |
4 files changed, 1275 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/clk/altera/Makefile b/roms/u-boot/drivers/clk/altera/Makefile new file mode 100644 index 000000000..96215ad5c --- /dev/null +++ b/roms/u-boot/drivers/clk/altera/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (C) 2018 Marek Vasut <marex@denx.de> +# + +obj-$(CONFIG_TARGET_SOCFPGA_AGILEX) += clk-agilex.o +obj-$(CONFIG_TARGET_SOCFPGA_ARRIA10) += clk-arria10.o diff --git a/roms/u-boot/drivers/clk/altera/clk-agilex.c b/roms/u-boot/drivers/clk/altera/clk-agilex.c new file mode 100644 index 000000000..cca6d6741 --- /dev/null +++ b/roms/u-boot/drivers/clk/altera/clk-agilex.c @@ -0,0 +1,663 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Intel Corporation <www.intel.com> + */ + +#include <common.h> +#include <log.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <clk-uclass.h> +#include <dm.h> +#include <dm/lists.h> +#include <dm/util.h> +#include <dt-bindings/clock/agilex-clock.h> +#include <linux/bitops.h> + +#include <asm/arch/clock_manager.h> + +DECLARE_GLOBAL_DATA_PTR; + +struct socfpga_clk_plat { + void __iomem *regs; +}; + +/* + * function to write the bypass register which requires a poll of the + * busy bit + */ +static void clk_write_bypass_mainpll(struct socfpga_clk_plat *plat, u32 val) +{ + CM_REG_WRITEL(plat, val, CLKMGR_MAINPLL_BYPASS); + cm_wait_for_fsm(); +} + +static void clk_write_bypass_perpll(struct socfpga_clk_plat *plat, u32 val) +{ + CM_REG_WRITEL(plat, val, CLKMGR_PERPLL_BYPASS); + cm_wait_for_fsm(); +} + +/* function to write the ctrl register which requires a poll of the busy bit */ +static void clk_write_ctrl(struct socfpga_clk_plat *plat, u32 val) +{ + CM_REG_WRITEL(plat, val, CLKMGR_CTRL); + cm_wait_for_fsm(); +} + +#define MEMBUS_MAINPLL 0 +#define MEMBUS_PERPLL 1 +#define MEMBUS_TIMEOUT 1000 + +#define MEMBUS_CLKSLICE_REG 0x27 +#define MEMBUS_SYNTHCALFOSC_INIT_CENTERFREQ_REG 0xb3 +#define MEMBUS_SYNTHPPM_WATCHDOGTMR_VF01_REG 0xe6 +#define MEMBUS_CALCLKSLICE0_DUTY_LOCOVR_REG 0x03 +#define MEMBUS_CALCLKSLICE1_DUTY_LOCOVR_REG 0x07 + +static const struct { + u32 reg; + u32 val; + u32 mask; +} membus_pll[] = { + { + MEMBUS_CLKSLICE_REG, + /* + * BIT[7:7] + * Enable source synchronous mode + */ + BIT(7), + BIT(7) + }, + { + MEMBUS_SYNTHCALFOSC_INIT_CENTERFREQ_REG, + /* + * BIT[0:0] + * Sets synthcalfosc_init_centerfreq=1 to limit overshoot + * frequency during lock + */ + BIT(0), + BIT(0) + }, + { + MEMBUS_SYNTHPPM_WATCHDOGTMR_VF01_REG, + /* + * BIT[0:0] + * Sets synthppm_watchdogtmr_vf0=1 to give the pll more time + * to settle before lock is asserted. + */ + BIT(0), + BIT(0) + }, + { + MEMBUS_CALCLKSLICE0_DUTY_LOCOVR_REG, + /* + * BIT[6:0] + * Centering duty cycle for clkslice0 output + */ + 0x4a, + GENMASK(6, 0) + }, + { + MEMBUS_CALCLKSLICE1_DUTY_LOCOVR_REG, + /* + * BIT[6:0] + * Centering duty cycle for clkslice1 output + */ + 0x4a, + GENMASK(6, 0) + }, +}; + +static int membus_wait_for_req(struct socfpga_clk_plat *plat, u32 pll, + int timeout) +{ + int cnt = 0; + u32 req_status; + + if (pll == MEMBUS_MAINPLL) + req_status = CM_REG_READL(plat, CLKMGR_MAINPLL_MEM); + else + req_status = CM_REG_READL(plat, CLKMGR_PERPLL_MEM); + + while ((cnt < timeout) && (req_status & CLKMGR_MEM_REQ_SET_MSK)) { + if (pll == MEMBUS_MAINPLL) + req_status = CM_REG_READL(plat, CLKMGR_MAINPLL_MEM); + else + req_status = CM_REG_READL(plat, CLKMGR_PERPLL_MEM); + cnt++; + } + + if (cnt >= timeout) + return -ETIMEDOUT; + + return 0; +} + +static int membus_write_pll(struct socfpga_clk_plat *plat, u32 pll, + u32 addr_offset, u32 wdat, int timeout) +{ + u32 addr; + u32 val; + + addr = ((addr_offset | CLKMGR_MEM_ADDR_START) & CLKMGR_MEM_ADDR_MASK); + + val = (CLKMGR_MEM_REQ_SET_MSK | CLKMGR_MEM_WR_SET_MSK | + (wdat << CLKMGR_MEM_WDAT_LSB_OFFSET) | addr); + + if (pll == MEMBUS_MAINPLL) + CM_REG_WRITEL(plat, val, CLKMGR_MAINPLL_MEM); + else + CM_REG_WRITEL(plat, val, CLKMGR_PERPLL_MEM); + + debug("MEMBUS: Write 0x%08x to addr = 0x%08x\n", wdat, addr); + + return membus_wait_for_req(plat, pll, timeout); +} + +static int membus_read_pll(struct socfpga_clk_plat *plat, u32 pll, + u32 addr_offset, u32 *rdata, int timeout) +{ + u32 addr; + u32 val; + + addr = ((addr_offset | CLKMGR_MEM_ADDR_START) & CLKMGR_MEM_ADDR_MASK); + + val = ((CLKMGR_MEM_REQ_SET_MSK & ~CLKMGR_MEM_WR_SET_MSK) | addr); + + if (pll == MEMBUS_MAINPLL) + CM_REG_WRITEL(plat, val, CLKMGR_MAINPLL_MEM); + else + CM_REG_WRITEL(plat, val, CLKMGR_PERPLL_MEM); + + *rdata = 0; + + if (membus_wait_for_req(plat, pll, timeout)) + return -ETIMEDOUT; + + if (pll == MEMBUS_MAINPLL) + *rdata = CM_REG_READL(plat, CLKMGR_MAINPLL_MEMSTAT); + else + *rdata = CM_REG_READL(plat, CLKMGR_PERPLL_MEMSTAT); + + debug("MEMBUS: Read 0x%08x from addr = 0x%08x\n", *rdata, addr); + + return 0; +} + +static void membus_pll_configs(struct socfpga_clk_plat *plat, u32 pll) +{ + int i; + u32 rdata; + + for (i = 0; i < ARRAY_SIZE(membus_pll); i++) { + membus_read_pll(plat, pll, membus_pll[i].reg, + &rdata, MEMBUS_TIMEOUT); + membus_write_pll(plat, pll, membus_pll[i].reg, + ((rdata & ~membus_pll[i].mask) | membus_pll[i].val), + MEMBUS_TIMEOUT); + } +} + +static u32 calc_vocalib_pll(u32 pllm, u32 pllglob) +{ + u32 mdiv, refclkdiv, arefclkdiv, drefclkdiv, mscnt, hscnt, vcocalib; + + mdiv = pllm & CLKMGR_PLLM_MDIV_MASK; + arefclkdiv = (pllglob & CLKMGR_PLLGLOB_AREFCLKDIV_MASK) >> + CLKMGR_PLLGLOB_AREFCLKDIV_OFFSET; + drefclkdiv = (pllglob & CLKMGR_PLLGLOB_DREFCLKDIV_MASK) >> + CLKMGR_PLLGLOB_DREFCLKDIV_OFFSET; + refclkdiv = (pllglob & CLKMGR_PLLGLOB_REFCLKDIV_MASK) >> + CLKMGR_PLLGLOB_REFCLKDIV_OFFSET; + mscnt = CLKMGR_VCOCALIB_MSCNT_CONST / (mdiv * BIT(drefclkdiv)); + if (!mscnt) + mscnt = 1; + hscnt = (mdiv * mscnt * BIT(drefclkdiv) / refclkdiv) - + CLKMGR_VCOCALIB_HSCNT_CONST; + vcocalib = (hscnt & CLKMGR_VCOCALIB_HSCNT_MASK) | + ((mscnt << CLKMGR_VCOCALIB_MSCNT_OFFSET) & + CLKMGR_VCOCALIB_MSCNT_MASK); + + /* Dump all the pll calibration settings for debug purposes */ + debug("mdiv : %d\n", mdiv); + debug("arefclkdiv : %d\n", arefclkdiv); + debug("drefclkdiv : %d\n", drefclkdiv); + debug("refclkdiv : %d\n", refclkdiv); + debug("mscnt : %d\n", mscnt); + debug("hscnt : %d\n", hscnt); + debug("vcocalib : 0x%08x\n", vcocalib); + + return vcocalib; +} + +/* + * Setup clocks while making no assumptions about previous state of the clocks. + */ +static void clk_basic_init(struct udevice *dev, + const struct cm_config * const cfg) +{ + struct socfpga_clk_plat *plat = dev_get_plat(dev); + u32 vcocalib; + + if (!cfg) + return; + +#ifdef CONFIG_SPL_BUILD + /* Always force clock manager into boot mode before any configuration */ + clk_write_ctrl(plat, + CM_REG_READL(plat, CLKMGR_CTRL) | CLKMGR_CTRL_BOOTMODE); +#else + /* Skip clock configuration in SSBL if it's not in boot mode */ + if (!(CM_REG_READL(plat, CLKMGR_CTRL) & CLKMGR_CTRL_BOOTMODE)) + return; +#endif + + /* Put both PLLs in bypass */ + clk_write_bypass_mainpll(plat, CLKMGR_BYPASS_MAINPLL_ALL); + clk_write_bypass_perpll(plat, CLKMGR_BYPASS_PERPLL_ALL); + + /* Put both PLLs in Reset and Power Down */ + CM_REG_CLRBITS(plat, CLKMGR_MAINPLL_PLLGLOB, + CLKMGR_PLLGLOB_PD_MASK | CLKMGR_PLLGLOB_RST_MASK); + CM_REG_CLRBITS(plat, CLKMGR_PERPLL_PLLGLOB, + CLKMGR_PLLGLOB_PD_MASK | CLKMGR_PLLGLOB_RST_MASK); + + /* setup main PLL dividers where calculate the vcocalib value */ + vcocalib = calc_vocalib_pll(cfg->main_pll_pllm, cfg->main_pll_pllglob); + CM_REG_WRITEL(plat, cfg->main_pll_pllglob & ~CLKMGR_PLLGLOB_RST_MASK, + CLKMGR_MAINPLL_PLLGLOB); + CM_REG_WRITEL(plat, cfg->main_pll_fdbck, CLKMGR_MAINPLL_FDBCK); + CM_REG_WRITEL(plat, vcocalib, CLKMGR_MAINPLL_VCOCALIB); + CM_REG_WRITEL(plat, cfg->main_pll_pllc0, CLKMGR_MAINPLL_PLLC0); + CM_REG_WRITEL(plat, cfg->main_pll_pllc1, CLKMGR_MAINPLL_PLLC1); + CM_REG_WRITEL(plat, cfg->main_pll_pllc2, CLKMGR_MAINPLL_PLLC2); + CM_REG_WRITEL(plat, cfg->main_pll_pllc3, CLKMGR_MAINPLL_PLLC3); + CM_REG_WRITEL(plat, cfg->main_pll_pllm, CLKMGR_MAINPLL_PLLM); + CM_REG_WRITEL(plat, cfg->main_pll_mpuclk, CLKMGR_MAINPLL_MPUCLK); + CM_REG_WRITEL(plat, cfg->main_pll_nocclk, CLKMGR_MAINPLL_NOCCLK); + CM_REG_WRITEL(plat, cfg->main_pll_nocdiv, CLKMGR_MAINPLL_NOCDIV); + + /* setup peripheral PLL dividers where calculate the vcocalib value */ + vcocalib = calc_vocalib_pll(cfg->per_pll_pllm, cfg->per_pll_pllglob); + CM_REG_WRITEL(plat, cfg->per_pll_pllglob & ~CLKMGR_PLLGLOB_RST_MASK, + CLKMGR_PERPLL_PLLGLOB); + CM_REG_WRITEL(plat, cfg->per_pll_fdbck, CLKMGR_PERPLL_FDBCK); + CM_REG_WRITEL(plat, vcocalib, CLKMGR_PERPLL_VCOCALIB); + CM_REG_WRITEL(plat, cfg->per_pll_pllc0, CLKMGR_PERPLL_PLLC0); + CM_REG_WRITEL(plat, cfg->per_pll_pllc1, CLKMGR_PERPLL_PLLC1); + CM_REG_WRITEL(plat, cfg->per_pll_pllc2, CLKMGR_PERPLL_PLLC2); + CM_REG_WRITEL(plat, cfg->per_pll_pllc3, CLKMGR_PERPLL_PLLC3); + CM_REG_WRITEL(plat, cfg->per_pll_pllm, CLKMGR_PERPLL_PLLM); + CM_REG_WRITEL(plat, cfg->per_pll_emacctl, CLKMGR_PERPLL_EMACCTL); + CM_REG_WRITEL(plat, cfg->per_pll_gpiodiv, CLKMGR_PERPLL_GPIODIV); + + /* Take both PLL out of reset and power up */ + CM_REG_SETBITS(plat, CLKMGR_MAINPLL_PLLGLOB, + CLKMGR_PLLGLOB_PD_MASK | CLKMGR_PLLGLOB_RST_MASK); + CM_REG_SETBITS(plat, CLKMGR_PERPLL_PLLGLOB, + CLKMGR_PLLGLOB_PD_MASK | CLKMGR_PLLGLOB_RST_MASK); + + /* Membus programming for mainpll */ + membus_pll_configs(plat, MEMBUS_MAINPLL); + /* Membus programming for peripll */ + membus_pll_configs(plat, MEMBUS_PERPLL); + + cm_wait_for_lock(CLKMGR_STAT_ALLPLL_LOCKED_MASK); + + /* Configure ping pong counters in altera group */ + CM_REG_WRITEL(plat, cfg->alt_emacactr, CLKMGR_ALTR_EMACACTR); + CM_REG_WRITEL(plat, cfg->alt_emacbctr, CLKMGR_ALTR_EMACBCTR); + CM_REG_WRITEL(plat, cfg->alt_emacptpctr, CLKMGR_ALTR_EMACPTPCTR); + CM_REG_WRITEL(plat, cfg->alt_gpiodbctr, CLKMGR_ALTR_GPIODBCTR); + CM_REG_WRITEL(plat, cfg->alt_sdmmcctr, CLKMGR_ALTR_SDMMCCTR); + CM_REG_WRITEL(plat, cfg->alt_s2fuser0ctr, CLKMGR_ALTR_S2FUSER0CTR); + CM_REG_WRITEL(plat, cfg->alt_s2fuser1ctr, CLKMGR_ALTR_S2FUSER1CTR); + CM_REG_WRITEL(plat, cfg->alt_psirefctr, CLKMGR_ALTR_PSIREFCTR); + + CM_REG_WRITEL(plat, CLKMGR_LOSTLOCK_SET_MASK, CLKMGR_MAINPLL_LOSTLOCK); + CM_REG_WRITEL(plat, CLKMGR_LOSTLOCK_SET_MASK, CLKMGR_PERPLL_LOSTLOCK); + + CM_REG_WRITEL(plat, CM_REG_READL(plat, CLKMGR_MAINPLL_PLLGLOB) | + CLKMGR_PLLGLOB_CLR_LOSTLOCK_BYPASS_MASK, + CLKMGR_MAINPLL_PLLGLOB); + CM_REG_WRITEL(plat, CM_REG_READL(plat, CLKMGR_PERPLL_PLLGLOB) | + CLKMGR_PLLGLOB_CLR_LOSTLOCK_BYPASS_MASK, + CLKMGR_PERPLL_PLLGLOB); + + /* Take all PLLs out of bypass */ + clk_write_bypass_mainpll(plat, 0); + clk_write_bypass_perpll(plat, 0); + + /* Clear the loss of lock bits (write 1 to clear) */ + CM_REG_CLRBITS(plat, CLKMGR_INTRCLR, + CLKMGR_INTER_PERPLLLOST_MASK | + CLKMGR_INTER_MAINPLLLOST_MASK); + + /* Take all ping pong counters out of reset */ + CM_REG_CLRBITS(plat, CLKMGR_ALTR_EXTCNTRST, + CLKMGR_ALT_EXTCNTRST_ALLCNTRST); + + /* Out of boot mode */ + clk_write_ctrl(plat, + CM_REG_READL(plat, CLKMGR_CTRL) & ~CLKMGR_CTRL_BOOTMODE); +} + +static u64 clk_get_vco_clk_hz(struct socfpga_clk_plat *plat, + u32 pllglob_reg, u32 pllm_reg) +{ + u64 fref, arefdiv, mdiv, reg, vco; + + reg = CM_REG_READL(plat, pllglob_reg); + + fref = (reg & CLKMGR_PLLGLOB_VCO_PSRC_MASK) >> + CLKMGR_PLLGLOB_VCO_PSRC_OFFSET; + + switch (fref) { + case CLKMGR_VCO_PSRC_EOSC1: + fref = cm_get_osc_clk_hz(); + break; + case CLKMGR_VCO_PSRC_INTOSC: + fref = cm_get_intosc_clk_hz(); + break; + case CLKMGR_VCO_PSRC_F2S: + fref = cm_get_fpga_clk_hz(); + break; + } + + arefdiv = (reg & CLKMGR_PLLGLOB_AREFCLKDIV_MASK) >> + CLKMGR_PLLGLOB_AREFCLKDIV_OFFSET; + + mdiv = CM_REG_READL(plat, pllm_reg) & CLKMGR_PLLM_MDIV_MASK; + + vco = fref / arefdiv; + vco = vco * mdiv; + + return vco; +} + +static u64 clk_get_main_vco_clk_hz(struct socfpga_clk_plat *plat) +{ + return clk_get_vco_clk_hz(plat, CLKMGR_MAINPLL_PLLGLOB, + CLKMGR_MAINPLL_PLLM); +} + +static u64 clk_get_per_vco_clk_hz(struct socfpga_clk_plat *plat) +{ + return clk_get_vco_clk_hz(plat, CLKMGR_PERPLL_PLLGLOB, + CLKMGR_PERPLL_PLLM); +} + +static u32 clk_get_5_1_clk_src(struct socfpga_clk_plat *plat, u64 reg) +{ + u32 clksrc = CM_REG_READL(plat, reg); + + return (clksrc & CLKMGR_CLKSRC_MASK) >> CLKMGR_CLKSRC_OFFSET; +} + +static u64 clk_get_clksrc_hz(struct socfpga_clk_plat *plat, u32 clksrc_reg, + u32 main_reg, u32 per_reg) +{ + u64 clock; + u32 clklsrc = clk_get_5_1_clk_src(plat, clksrc_reg); + + switch (clklsrc) { + case CLKMGR_CLKSRC_MAIN: + clock = clk_get_main_vco_clk_hz(plat); + clock /= (CM_REG_READL(plat, main_reg) & + CLKMGR_CLKCNT_MSK); + break; + + case CLKMGR_CLKSRC_PER: + clock = clk_get_per_vco_clk_hz(plat); + clock /= (CM_REG_READL(plat, per_reg) & + CLKMGR_CLKCNT_MSK); + break; + + case CLKMGR_CLKSRC_OSC1: + clock = cm_get_osc_clk_hz(); + break; + + case CLKMGR_CLKSRC_INTOSC: + clock = cm_get_intosc_clk_hz(); + break; + + case CLKMGR_CLKSRC_FPGA: + clock = cm_get_fpga_clk_hz(); + break; + default: + return 0; + } + + return clock; +} + +static u64 clk_get_mpu_clk_hz(struct socfpga_clk_plat *plat) +{ + u64 clock = clk_get_clksrc_hz(plat, CLKMGR_MAINPLL_MPUCLK, + CLKMGR_MAINPLL_PLLC0, + CLKMGR_PERPLL_PLLC0); + + clock /= 1 + (CM_REG_READL(plat, CLKMGR_MAINPLL_MPUCLK) & + CLKMGR_CLKCNT_MSK); + + return clock; +} + +static u32 clk_get_l3_main_clk_hz(struct socfpga_clk_plat *plat) +{ + return clk_get_clksrc_hz(plat, CLKMGR_MAINPLL_NOCCLK, + CLKMGR_MAINPLL_PLLC1, + CLKMGR_PERPLL_PLLC1); +} + +static u32 clk_get_l4_main_clk_hz(struct socfpga_clk_plat *plat) +{ + u64 clock = clk_get_l3_main_clk_hz(plat); + + clock /= BIT((CM_REG_READL(plat, CLKMGR_MAINPLL_NOCDIV) >> + CLKMGR_NOCDIV_L4MAIN_OFFSET) & + CLKMGR_NOCDIV_DIVIDER_MASK); + + return clock; +} + +static u32 clk_get_sdmmc_clk_hz(struct socfpga_clk_plat *plat) +{ + u64 clock = clk_get_clksrc_hz(plat, CLKMGR_ALTR_SDMMCCTR, + CLKMGR_MAINPLL_PLLC3, + CLKMGR_PERPLL_PLLC3); + + clock /= 1 + (CM_REG_READL(plat, CLKMGR_ALTR_SDMMCCTR) & + CLKMGR_CLKCNT_MSK); + + return clock / 4; +} + +static u32 clk_get_l4_sp_clk_hz(struct socfpga_clk_plat *plat) +{ + u64 clock = clk_get_l3_main_clk_hz(plat); + + clock /= BIT((CM_REG_READL(plat, CLKMGR_MAINPLL_NOCDIV) >> + CLKMGR_NOCDIV_L4SPCLK_OFFSET) & + CLKMGR_NOCDIV_DIVIDER_MASK); + + return clock; +} + +static u32 clk_get_l4_mp_clk_hz(struct socfpga_clk_plat *plat) +{ + u64 clock = clk_get_l3_main_clk_hz(plat); + + clock /= BIT((CM_REG_READL(plat, CLKMGR_MAINPLL_NOCDIV) >> + CLKMGR_NOCDIV_L4MPCLK_OFFSET) & + CLKMGR_NOCDIV_DIVIDER_MASK); + + return clock; +} + +static u32 clk_get_l4_sys_free_clk_hz(struct socfpga_clk_plat *plat) +{ + if (CM_REG_READL(plat, CLKMGR_STAT) & CLKMGR_STAT_BOOTMODE) + return clk_get_l3_main_clk_hz(plat) / 2; + + return clk_get_l3_main_clk_hz(plat) / 4; +} + +static u32 clk_get_emac_clk_hz(struct socfpga_clk_plat *plat, u32 emac_id) +{ + bool emacsel_a; + u32 ctl; + u32 ctr_reg; + u32 clock; + u32 div; + u32 reg; + + /* Get EMAC clock source */ + ctl = CM_REG_READL(plat, CLKMGR_PERPLL_EMACCTL); + if (emac_id == AGILEX_EMAC0_CLK) + ctl = (ctl >> CLKMGR_PERPLLGRP_EMACCTL_EMAC0SELB_OFFSET) & + CLKMGR_PERPLLGRP_EMACCTL_EMAC0SELB_MASK; + else if (emac_id == AGILEX_EMAC1_CLK) + ctl = (ctl >> CLKMGR_PERPLLGRP_EMACCTL_EMAC1SELB_OFFSET) & + CLKMGR_PERPLLGRP_EMACCTL_EMAC1SELB_MASK; + else if (emac_id == AGILEX_EMAC2_CLK) + ctl = (ctl >> CLKMGR_PERPLLGRP_EMACCTL_EMAC2SELB_OFFSET) & + CLKMGR_PERPLLGRP_EMACCTL_EMAC2SELB_MASK; + else + return 0; + + if (ctl) { + /* EMAC B source */ + emacsel_a = false; + ctr_reg = CLKMGR_ALTR_EMACBCTR; + } else { + /* EMAC A source */ + emacsel_a = true; + ctr_reg = CLKMGR_ALTR_EMACACTR; + } + + reg = CM_REG_READL(plat, ctr_reg); + clock = (reg & CLKMGR_ALT_EMACCTR_SRC_MASK) + >> CLKMGR_ALT_EMACCTR_SRC_OFFSET; + div = (reg & CLKMGR_ALT_EMACCTR_CNT_MASK) + >> CLKMGR_ALT_EMACCTR_CNT_OFFSET; + + switch (clock) { + case CLKMGR_CLKSRC_MAIN: + clock = clk_get_main_vco_clk_hz(plat); + if (emacsel_a) { + clock /= (CM_REG_READL(plat, CLKMGR_MAINPLL_PLLC2) & + CLKMGR_CLKCNT_MSK); + } else { + clock /= (CM_REG_READL(plat, CLKMGR_MAINPLL_PLLC3) & + CLKMGR_CLKCNT_MSK); + } + break; + + case CLKMGR_CLKSRC_PER: + clock = clk_get_per_vco_clk_hz(plat); + if (emacsel_a) { + clock /= (CM_REG_READL(plat, CLKMGR_PERPLL_PLLC2) & + CLKMGR_CLKCNT_MSK); + } else { + clock /= (CM_REG_READL(plat, CLKMGR_PERPLL_PLLC3) & + CLKMGR_CLKCNT_MSK); + } + break; + + case CLKMGR_CLKSRC_OSC1: + clock = cm_get_osc_clk_hz(); + break; + + case CLKMGR_CLKSRC_INTOSC: + clock = cm_get_intosc_clk_hz(); + break; + + case CLKMGR_CLKSRC_FPGA: + clock = cm_get_fpga_clk_hz(); + break; + } + + clock /= 1 + div; + + return clock; +} + +static ulong socfpga_clk_get_rate(struct clk *clk) +{ + struct socfpga_clk_plat *plat = dev_get_plat(clk->dev); + + switch (clk->id) { + case AGILEX_MPU_CLK: + return clk_get_mpu_clk_hz(plat); + case AGILEX_L4_MAIN_CLK: + return clk_get_l4_main_clk_hz(plat); + case AGILEX_L4_SYS_FREE_CLK: + return clk_get_l4_sys_free_clk_hz(plat); + case AGILEX_L4_MP_CLK: + return clk_get_l4_mp_clk_hz(plat); + case AGILEX_L4_SP_CLK: + return clk_get_l4_sp_clk_hz(plat); + case AGILEX_SDMMC_CLK: + return clk_get_sdmmc_clk_hz(plat); + case AGILEX_EMAC0_CLK: + case AGILEX_EMAC1_CLK: + case AGILEX_EMAC2_CLK: + return clk_get_emac_clk_hz(plat, clk->id); + case AGILEX_USB_CLK: + case AGILEX_NAND_X_CLK: + return clk_get_l4_mp_clk_hz(plat); + case AGILEX_NAND_CLK: + return clk_get_l4_mp_clk_hz(plat) / 4; + default: + return -ENXIO; + } +} + +static int socfpga_clk_enable(struct clk *clk) +{ + return 0; +} + +static int socfpga_clk_probe(struct udevice *dev) +{ + const struct cm_config *cm_default_cfg = cm_get_default_config(); + + clk_basic_init(dev, cm_default_cfg); + + return 0; +} + +static int socfpga_clk_of_to_plat(struct udevice *dev) +{ + struct socfpga_clk_plat *plat = dev_get_plat(dev); + fdt_addr_t addr; + + addr = dev_read_addr(dev); + if (addr == FDT_ADDR_T_NONE) + return -EINVAL; + plat->regs = (void __iomem *)addr; + + return 0; +} + +static struct clk_ops socfpga_clk_ops = { + .enable = socfpga_clk_enable, + .get_rate = socfpga_clk_get_rate, +}; + +static const struct udevice_id socfpga_clk_match[] = { + { .compatible = "intel,agilex-clkmgr" }, + {} +}; + +U_BOOT_DRIVER(socfpga_agilex_clk) = { + .name = "clk-agilex", + .id = UCLASS_CLK, + .of_match = socfpga_clk_match, + .ops = &socfpga_clk_ops, + .probe = socfpga_clk_probe, + .of_to_plat = socfpga_clk_of_to_plat, + .plat_auto = sizeof(struct socfpga_clk_plat), +}; diff --git a/roms/u-boot/drivers/clk/altera/clk-agilex.h b/roms/u-boot/drivers/clk/altera/clk-agilex.h new file mode 100644 index 000000000..cd68ebc43 --- /dev/null +++ b/roms/u-boot/drivers/clk/altera/clk-agilex.h @@ -0,0 +1,241 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019 Intel Corporation <www.intel.com> + */ + +#ifndef _CLK_AGILEX_ +#define _CLK_AGILEX_ + +#ifndef __ASSEMBLY__ +#include <linux/bitops.h> +#endif + +#define CM_REG_READL(plat, reg) \ + readl((plat)->regs + (reg)) + +#define CM_REG_WRITEL(plat, data, reg) \ + writel(data, (plat)->regs + (reg)) + +#define CM_REG_CLRBITS(plat, reg, clear) \ + clrbits_le32((plat)->regs + (reg), (clear)) + +#define CM_REG_SETBITS(plat, reg, set) \ + setbits_le32((plat)->regs + (reg), (set)) + +struct cm_config { + /* main group */ + u32 main_pll_mpuclk; + u32 main_pll_nocclk; + u32 main_pll_nocdiv; + u32 main_pll_pllglob; + u32 main_pll_fdbck; + u32 main_pll_pllc0; + u32 main_pll_pllc1; + u32 main_pll_pllc2; + u32 main_pll_pllc3; + u32 main_pll_pllm; + + /* peripheral group */ + u32 per_pll_emacctl; + u32 per_pll_gpiodiv; + u32 per_pll_pllglob; + u32 per_pll_fdbck; + u32 per_pll_pllc0; + u32 per_pll_pllc1; + u32 per_pll_pllc2; + u32 per_pll_pllc3; + u32 per_pll_pllm; + + /* altera group */ + u32 alt_emacactr; + u32 alt_emacbctr; + u32 alt_emacptpctr; + u32 alt_gpiodbctr; + u32 alt_sdmmcctr; + u32 alt_s2fuser0ctr; + u32 alt_s2fuser1ctr; + u32 alt_psirefctr; + + /* incoming clock */ + u32 hps_osc_clk_hz; + u32 fpga_clk_hz; + u32 spare[3]; +}; + +/* Clock Manager registers */ +#define CLKMGR_CTRL 0 +#define CLKMGR_STAT 4 +#define CLKMGR_TESTIOCTRL 8 +#define CLKMGR_INTRGEN 0x0c +#define CLKMGR_INTRMSK 0x10 +#define CLKMGR_INTRCLR 0x14 +#define CLKMGR_INTRSTS 0x18 +#define CLKMGR_INTRSTK 0x1c +#define CLKMGR_INTRRAW 0x20 + +/* Clock Manager Main PPL group registers */ +#define CLKMGR_MAINPLL_EN 0x24 +#define CLKMGR_MAINPLL_ENS 0x28 +#define CLKMGR_MAINPLL_ENR 0x2c +#define CLKMGR_MAINPLL_BYPASS 0x30 +#define CLKMGR_MAINPLL_BYPASSS 0x34 +#define CLKMGR_MAINPLL_BYPASSR 0x38 +#define CLKMGR_MAINPLL_MPUCLK 0x3c +#define CLKMGR_MAINPLL_NOCCLK 0x40 +#define CLKMGR_MAINPLL_NOCDIV 0x44 +#define CLKMGR_MAINPLL_PLLGLOB 0x48 +#define CLKMGR_MAINPLL_FDBCK 0x4c +#define CLKMGR_MAINPLL_MEM 0x50 +#define CLKMGR_MAINPLL_MEMSTAT 0x54 +#define CLKMGR_MAINPLL_PLLC0 0x58 +#define CLKMGR_MAINPLL_PLLC1 0x5c +#define CLKMGR_MAINPLL_VCOCALIB 0x60 +#define CLKMGR_MAINPLL_PLLC2 0x64 +#define CLKMGR_MAINPLL_PLLC3 0x68 +#define CLKMGR_MAINPLL_PLLM 0x6c +#define CLKMGR_MAINPLL_FHOP 0x70 +#define CLKMGR_MAINPLL_SSC 0x74 +#define CLKMGR_MAINPLL_LOSTLOCK 0x78 + +/* Clock Manager Peripheral PPL group registers */ +#define CLKMGR_PERPLL_EN 0x7c +#define CLKMGR_PERPLL_ENS 0x80 +#define CLKMGR_PERPLL_ENR 0x84 +#define CLKMGR_PERPLL_BYPASS 0x88 +#define CLKMGR_PERPLL_BYPASSS 0x8c +#define CLKMGR_PERPLL_BYPASSR 0x90 +#define CLKMGR_PERPLL_EMACCTL 0x94 +#define CLKMGR_PERPLL_GPIODIV 0x98 +#define CLKMGR_PERPLL_PLLGLOB 0x9c +#define CLKMGR_PERPLL_FDBCK 0xa0 +#define CLKMGR_PERPLL_MEM 0xa4 +#define CLKMGR_PERPLL_MEMSTAT 0xa8 +#define CLKMGR_PERPLL_PLLC0 0xac +#define CLKMGR_PERPLL_PLLC1 0xb0 +#define CLKMGR_PERPLL_VCOCALIB 0xb4 +#define CLKMGR_PERPLL_PLLC2 0xb8 +#define CLKMGR_PERPLL_PLLC3 0xbc +#define CLKMGR_PERPLL_PLLM 0xc0 +#define CLKMGR_PERPLL_FHOP 0xc4 +#define CLKMGR_PERPLL_SSC 0xc8 +#define CLKMGR_PERPLL_LOSTLOCK 0xcc + +/* Clock Manager Altera group registers */ +#define CLKMGR_ALTR_JTAG 0xd0 +#define CLKMGR_ALTR_EMACACTR 0xd4 +#define CLKMGR_ALTR_EMACBCTR 0xd8 +#define CLKMGR_ALTR_EMACPTPCTR 0xdc +#define CLKMGR_ALTR_GPIODBCTR 0xe0 +#define CLKMGR_ALTR_SDMMCCTR 0xe4 +#define CLKMGR_ALTR_S2FUSER0CTR 0xe8 +#define CLKMGR_ALTR_S2FUSER1CTR 0xec +#define CLKMGR_ALTR_PSIREFCTR 0xf0 +#define CLKMGR_ALTR_EXTCNTRST 0xf4 + +#define CLKMGR_CTRL_BOOTMODE BIT(0) + +#define CLKMGR_STAT_BUSY BIT(0) +#define CLKMGR_STAT_MAINPLL_LOCKED BIT(8) +#define CLKMGR_STAT_MAIN_TRANS BIT(9) +#define CLKMGR_STAT_PERPLL_LOCKED BIT(16) +#define CLKMGR_STAT_PERF_TRANS BIT(17) +#define CLKMGR_STAT_BOOTMODE BIT(24) +#define CLKMGR_STAT_BOOTCLKSRC BIT(25) + +#define CLKMGR_STAT_ALLPLL_LOCKED_MASK \ + (CLKMGR_STAT_MAINPLL_LOCKED | CLKMGR_STAT_PERPLL_LOCKED) + +#define CLKMGR_INTER_MAINPLLLOCKED_MASK 0x00000001 +#define CLKMGR_INTER_PERPLLLOCKED_MASK 0x00000002 +#define CLKMGR_INTER_MAINPLLLOST_MASK 0x00000004 +#define CLKMGR_INTER_PERPLLLOST_MASK 0x00000008 + +#define CLKMGR_CLKSRC_MASK GENMASK(18, 16) +#define CLKMGR_CLKSRC_OFFSET 16 +#define CLKMGR_CLKSRC_MAIN 0 +#define CLKMGR_CLKSRC_PER 1 +#define CLKMGR_CLKSRC_OSC1 2 +#define CLKMGR_CLKSRC_INTOSC 3 +#define CLKMGR_CLKSRC_FPGA 4 +#define CLKMGR_CLKCNT_MSK GENMASK(10, 0) + +#define CLKMGR_BYPASS_MAINPLL_ALL 0x7 +#define CLKMGR_BYPASS_PERPLL_ALL 0x7f + +#define CLKMGR_NOCDIV_L4MAIN_OFFSET 0 +#define CLKMGR_NOCDIV_L4MPCLK_OFFSET 8 +#define CLKMGR_NOCDIV_L4SPCLK_OFFSET 16 +#define CLKMGR_NOCDIV_CSATCLK_OFFSET 24 +#define CLKMGR_NOCDIV_CSTRACECLK_OFFSET 26 +#define CLKMGR_NOCDIV_CSPDBGCLK_OFFSET 28 +#define CLKMGR_NOCDIV_DIVIDER_MASK 0x3 + +#define CLKMGR_PLLGLOB_PD_MASK BIT(0) +#define CLKMGR_PLLGLOB_RST_MASK BIT(1) +#define CLKMGR_PLLGLOB_AREFCLKDIV_MASK GENMASK(11, 8) +#define CLKMGR_PLLGLOB_DREFCLKDIV_MASK GENMASK(13, 12) +#define CLKMGR_PLLGLOB_REFCLKDIV_MASK GENMASK(13, 8) +#define CLKMGR_PLLGLOB_MODCLKDIV_MASK GENMASK(24, 27) +#define CLKMGR_PLLGLOB_AREFCLKDIV_OFFSET 8 +#define CLKMGR_PLLGLOB_DREFCLKDIV_OFFSET 12 +#define CLKMGR_PLLGLOB_REFCLKDIV_OFFSET 8 +#define CLKMGR_PLLGLOB_MODCLKDIV_OFFSET 24 +#define CLKMGR_PLLGLOB_VCO_PSRC_MASK GENMASK(17, 16) +#define CLKMGR_PLLGLOB_VCO_PSRC_OFFSET 16 +#define CLKMGR_PLLGLOB_CLR_LOSTLOCK_BYPASS_MASK BIT(29) + +#define CLKMGR_VCO_PSRC_EOSC1 0 +#define CLKMGR_VCO_PSRC_INTOSC 1 +#define CLKMGR_VCO_PSRC_F2S 2 + +#define CLKMGR_MEM_REQ_SET_MSK BIT(24) +#define CLKMGR_MEM_WR_SET_MSK BIT(25) +#define CLKMGR_MEM_ERR_MSK BIT(26) +#define CLKMGR_MEM_WDAT_LSB_OFFSET 16 +#define CLKMGR_MEM_ADDR_MASK GENMASK(15, 0) +#define CLKMGR_MEM_ADDR_START 0x00004000 + +#define CLKMGR_PLLCX_EN_SET_MSK BIT(27) +#define CLKMGR_PLLCX_MUTE_SET_MSK BIT(28) + +#define CLKMGR_VCOCALIB_MSCNT_MASK GENMASK(23, 16) +#define CLKMGR_VCOCALIB_MSCNT_OFFSET 16 +#define CLKMGR_VCOCALIB_HSCNT_MASK GENMASK(9, 0) +#define CLKMGR_VCOCALIB_MSCNT_CONST 100 +#define CLKMGR_VCOCALIB_HSCNT_CONST 4 + +#define CLKMGR_PLLM_MDIV_MASK GENMASK(9, 0) + +#define CLKMGR_LOSTLOCK_SET_MASK BIT(0) + +#define CLKMGR_PERPLLGRP_EN_SDMMCCLK_MASK BIT(5) +#define CLKMGR_PERPLLGRP_EMACCTL_EMAC0SELB_OFFSET 26 +#define CLKMGR_PERPLLGRP_EMACCTL_EMAC0SELB_MASK BIT(26) +#define CLKMGR_PERPLLGRP_EMACCTL_EMAC1SELB_OFFSET 27 +#define CLKMGR_PERPLLGRP_EMACCTL_EMAC1SELB_MASK BIT(27) +#define CLKMGR_PERPLLGRP_EMACCTL_EMAC2SELB_OFFSET 28 +#define CLKMGR_PERPLLGRP_EMACCTL_EMAC2SELB_MASK BIT(28) + +#define CLKMGR_ALT_EMACCTR_SRC_OFFSET 16 +#define CLKMGR_ALT_EMACCTR_SRC_MASK GENMASK(18, 16) +#define CLKMGR_ALT_EMACCTR_CNT_OFFSET 0 +#define CLKMGR_ALT_EMACCTR_CNT_MASK GENMASK(10, 0) + +#define CLKMGR_ALT_EXTCNTRST_EMACACNTRST BIT(0) +#define CLKMGR_ALT_EXTCNTRST_EMACBCNTRST BIT(1) +#define CLKMGR_ALT_EXTCNTRST_EMACPTPCNTRST BIT(2) +#define CLKMGR_ALT_EXTCNTRST_GPIODBCNTRST BIT(3) +#define CLKMGR_ALT_EXTCNTRST_SDMMCCNTRST BIT(4) +#define CLKMGR_ALT_EXTCNTRST_S2FUSER0CNTRST BIT(5) +#define CLKMGR_ALT_EXTCNTRST_S2FUSER1CNTRST BIT(6) +#define CLKMGR_ALT_EXTCNTRST_PSIREFCNTRST BIT(7) +#define CLKMGR_ALT_EXTCNTRST_ALLCNTRST \ + (CLKMGR_ALT_EXTCNTRST_EMACACNTRST | \ + CLKMGR_ALT_EXTCNTRST_EMACBCNTRST | \ + CLKMGR_ALT_EXTCNTRST_EMACPTPCNTRST | \ + CLKMGR_ALT_EXTCNTRST_GPIODBCNTRST | \ + CLKMGR_ALT_EXTCNTRST_SDMMCCNTRST | \ + CLKMGR_ALT_EXTCNTRST_S2FUSER0CNTRST | \ + CLKMGR_ALT_EXTCNTRST_S2FUSER1CNTRST | \ + CLKMGR_ALT_EXTCNTRST_PSIREFCNTRST) +#endif /* _CLK_AGILEX_ */ diff --git a/roms/u-boot/drivers/clk/altera/clk-arria10.c b/roms/u-boot/drivers/clk/altera/clk-arria10.c new file mode 100644 index 000000000..578597a16 --- /dev/null +++ b/roms/u-boot/drivers/clk/altera/clk-arria10.c @@ -0,0 +1,364 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 Marek Vasut <marex@denx.de> + */ + +#include <common.h> +#include <malloc.h> +#include <asm/io.h> +#include <clk-uclass.h> +#include <dm.h> +#include <dm/device_compat.h> +#include <dm/devres.h> +#include <dm/lists.h> +#include <dm/util.h> +#include <linux/bitops.h> +#include <asm/global_data.h> + +#include <asm/arch/clock_manager.h> + +enum socfpga_a10_clk_type { + SOCFPGA_A10_CLK_MAIN_PLL, + SOCFPGA_A10_CLK_PER_PLL, + SOCFPGA_A10_CLK_PERIP_CLK, + SOCFPGA_A10_CLK_GATE_CLK, + SOCFPGA_A10_CLK_UNKNOWN_CLK, +}; + +struct socfpga_a10_clk_plat { + enum socfpga_a10_clk_type type; + struct clk_bulk clks; + u32 regs; + /* Fixed divider */ + u16 fix_div; + /* Control register */ + u16 ctl_reg; + /* Divider register */ + u16 div_reg; + u8 div_len; + u8 div_off; + /* Clock gating register */ + u16 gate_reg; + u8 gate_bit; +}; + +static int socfpga_a10_clk_get_upstream(struct clk *clk, struct clk **upclk) +{ + struct socfpga_a10_clk_plat *plat = dev_get_plat(clk->dev); + u32 reg, maxval; + + if (plat->clks.count == 0) + return 0; + + if (plat->clks.count == 1) { + *upclk = &plat->clks.clks[0]; + return 0; + } + + if (!plat->ctl_reg) { + dev_err(clk->dev, "Invalid control register\n"); + return -EINVAL; + } + + reg = readl(plat->regs + plat->ctl_reg); + + /* Assume PLLs are ON for now */ + if (plat->type == SOCFPGA_A10_CLK_MAIN_PLL) { + reg = (reg >> 8) & 0x3; + maxval = 2; + } else if (plat->type == SOCFPGA_A10_CLK_PER_PLL) { + reg = (reg >> 8) & 0x3; + maxval = 3; + } else { + reg = (reg >> 16) & 0x7; + maxval = 4; + } + + if (reg > maxval) { + dev_err(clk->dev, "Invalid clock source\n"); + return -EINVAL; + } + + *upclk = &plat->clks.clks[reg]; + return 0; +} + +static int socfpga_a10_clk_endisable(struct clk *clk, bool enable) +{ + struct socfpga_a10_clk_plat *plat = dev_get_plat(clk->dev); + struct clk *upclk = NULL; + int ret; + + if (!enable && plat->gate_reg) + clrbits_le32(plat->regs + plat->gate_reg, BIT(plat->gate_bit)); + + ret = socfpga_a10_clk_get_upstream(clk, &upclk); + if (ret) + return ret; + + if (upclk) { + if (enable) + clk_enable(upclk); + else + clk_disable(upclk); + } + + if (enable && plat->gate_reg) + setbits_le32(plat->regs + plat->gate_reg, BIT(plat->gate_bit)); + + return 0; +} + +static int socfpga_a10_clk_enable(struct clk *clk) +{ + return socfpga_a10_clk_endisable(clk, true); +} + +static int socfpga_a10_clk_disable(struct clk *clk) +{ + return socfpga_a10_clk_endisable(clk, false); +} + +static ulong socfpga_a10_clk_get_rate(struct clk *clk) +{ + struct socfpga_a10_clk_plat *plat = dev_get_plat(clk->dev); + struct clk *upclk = NULL; + ulong rate = 0, reg, numer, denom; + int ret; + + ret = socfpga_a10_clk_get_upstream(clk, &upclk); + if (ret || !upclk) + return 0; + + rate = clk_get_rate(upclk); + + if (plat->type == SOCFPGA_A10_CLK_MAIN_PLL) { + reg = readl(plat->regs + plat->ctl_reg + 4); /* VCO1 */ + numer = reg & CLKMGR_MAINPLL_VCO1_NUMER_MSK; + denom = (reg >> CLKMGR_MAINPLL_VCO1_DENOM_LSB) & + CLKMGR_MAINPLL_VCO1_DENOM_MSK; + + rate /= denom + 1; + rate *= numer + 1; + } else if (plat->type == SOCFPGA_A10_CLK_PER_PLL) { + reg = readl(plat->regs + plat->ctl_reg + 4); /* VCO1 */ + numer = reg & CLKMGR_PERPLL_VCO1_NUMER_MSK; + denom = (reg >> CLKMGR_PERPLL_VCO1_DENOM_LSB) & + CLKMGR_PERPLL_VCO1_DENOM_MSK; + + rate /= denom + 1; + rate *= numer + 1; + } else { + rate /= plat->fix_div; + + if (plat->fix_div == 1 && plat->ctl_reg) { + reg = readl(plat->regs + plat->ctl_reg); + reg &= 0x7ff; + rate /= reg + 1; + } + + if (plat->div_reg) { + reg = readl(plat->regs + plat->div_reg); + reg >>= plat->div_off; + reg &= (1 << plat->div_len) - 1; + if (plat->type == SOCFPGA_A10_CLK_PERIP_CLK) + rate /= reg + 1; + if (plat->type == SOCFPGA_A10_CLK_GATE_CLK) + rate /= 1 << reg; + } + } + + return rate; +} + +static struct clk_ops socfpga_a10_clk_ops = { + .enable = socfpga_a10_clk_enable, + .disable = socfpga_a10_clk_disable, + .get_rate = socfpga_a10_clk_get_rate, +}; + +/* + * This workaround tries to fix the massively broken generated "handoff" DT, + * which contains duplicate clock nodes without any connection to the clock + * manager DT node. Yet, those "handoff" DT nodes contain configuration of + * the fixed input clock of the Arria10 which are missing from the base DT + * for Arria10. + * + * This workaround sets up upstream clock for the fixed input clocks of the + * A10 described in the base DT such that they map to the fixed clock from + * the "handoff" DT. This does not fully match how the clock look on the + * A10, but it is the least intrusive way to fix this mess. + */ +static void socfpga_a10_handoff_workaround(struct udevice *dev) +{ + struct socfpga_a10_clk_plat *plat = dev_get_plat(dev); + const void *fdt = gd->fdt_blob; + struct clk_bulk *bulk = &plat->clks; + int i, ret, offset = dev_of_offset(dev); + static const char * const socfpga_a10_fixedclk_map[] = { + "osc1", "altera_arria10_hps_eosc1", + "cb_intosc_ls_clk", "altera_arria10_hps_cb_intosc_ls", + "f2s_free_clk", "altera_arria10_hps_f2h_free", + }; + + if (fdt_node_check_compatible(fdt, offset, "fixed-clock")) + return; + + for (i = 0; i < ARRAY_SIZE(socfpga_a10_fixedclk_map); i += 2) + if (!strcmp(dev->name, socfpga_a10_fixedclk_map[i])) + break; + + if (i == ARRAY_SIZE(socfpga_a10_fixedclk_map)) + return; + + ret = uclass_get_device_by_name(UCLASS_CLK, + socfpga_a10_fixedclk_map[i + 1], &dev); + if (ret) + return; + + bulk->count = 1; + bulk->clks = devm_kcalloc(dev, bulk->count, + sizeof(struct clk), GFP_KERNEL); + if (!bulk->clks) + return; + + ret = clk_request(dev, &bulk->clks[0]); + if (ret) + free(bulk->clks); +} + +static int socfpga_a10_clk_bind(struct udevice *dev) +{ + const void *fdt = gd->fdt_blob; + int offset = dev_of_offset(dev); + bool pre_reloc_only = !(gd->flags & GD_FLG_RELOC); + const char *name; + int ret; + + for (offset = fdt_first_subnode(fdt, offset); + offset > 0; + offset = fdt_next_subnode(fdt, offset)) { + name = fdt_get_name(fdt, offset, NULL); + if (!name) + return -EINVAL; + + if (!strcmp(name, "clocks")) { + offset = fdt_first_subnode(fdt, offset); + name = fdt_get_name(fdt, offset, NULL); + if (!name) + return -EINVAL; + } + + /* Filter out supported sub-clock */ + if (fdt_node_check_compatible(fdt, offset, + "altr,socfpga-a10-pll-clock") && + fdt_node_check_compatible(fdt, offset, + "altr,socfpga-a10-perip-clk") && + fdt_node_check_compatible(fdt, offset, + "altr,socfpga-a10-gate-clk") && + fdt_node_check_compatible(fdt, offset, "fixed-clock")) + continue; + + if (pre_reloc_only && + !ofnode_pre_reloc(offset_to_ofnode(offset))) + continue; + + ret = device_bind_driver_to_node(dev, "clk-a10", name, + offset_to_ofnode(offset), + NULL); + if (ret) + return ret; + } + + return 0; +} + +static int socfpga_a10_clk_probe(struct udevice *dev) +{ + struct socfpga_a10_clk_plat *plat = dev_get_plat(dev); + struct socfpga_a10_clk_plat *pplat; + struct udevice *pdev; + const void *fdt = gd->fdt_blob; + int offset = dev_of_offset(dev); + + clk_get_bulk(dev, &plat->clks); + + socfpga_a10_handoff_workaround(dev); + + if (!fdt_node_check_compatible(fdt, offset, "altr,clk-mgr")) { + plat->regs = dev_read_addr(dev); + } else { + pdev = dev_get_parent(dev); + if (!pdev) + return -ENODEV; + + pplat = dev_get_plat(pdev); + if (!pplat) + return -EINVAL; + + plat->ctl_reg = dev_read_u32_default(dev, "reg", 0x0); + plat->regs = pplat->regs; + } + + if (!fdt_node_check_compatible(fdt, offset, + "altr,socfpga-a10-pll-clock")) { + /* Main PLL has 3 upstream clock */ + if (plat->clks.count == 3) + plat->type = SOCFPGA_A10_CLK_MAIN_PLL; + else + plat->type = SOCFPGA_A10_CLK_PER_PLL; + } else if (!fdt_node_check_compatible(fdt, offset, + "altr,socfpga-a10-perip-clk")) { + plat->type = SOCFPGA_A10_CLK_PERIP_CLK; + } else if (!fdt_node_check_compatible(fdt, offset, + "altr,socfpga-a10-gate-clk")) { + plat->type = SOCFPGA_A10_CLK_GATE_CLK; + } else { + plat->type = SOCFPGA_A10_CLK_UNKNOWN_CLK; + } + + return 0; +} + +static int socfpga_a10_of_to_plat(struct udevice *dev) +{ + struct socfpga_a10_clk_plat *plat = dev_get_plat(dev); + unsigned int divreg[3], gatereg[2]; + int ret; + + plat->type = SOCFPGA_A10_CLK_UNKNOWN_CLK; + + plat->fix_div = dev_read_u32_default(dev, "fixed-divider", 1); + + ret = dev_read_u32_array(dev, "div-reg", divreg, ARRAY_SIZE(divreg)); + if (!ret) { + plat->div_reg = divreg[0]; + plat->div_len = divreg[2]; + plat->div_off = divreg[1]; + } + + ret = dev_read_u32_array(dev, "clk-gate", gatereg, ARRAY_SIZE(gatereg)); + if (!ret) { + plat->gate_reg = gatereg[0]; + plat->gate_bit = gatereg[1]; + } + + return 0; +} + +static const struct udevice_id socfpga_a10_clk_match[] = { + { .compatible = "altr,clk-mgr" }, + {} +}; + +U_BOOT_DRIVER(socfpga_a10_clk) = { + .name = "clk-a10", + .id = UCLASS_CLK, + .of_match = socfpga_a10_clk_match, + .ops = &socfpga_a10_clk_ops, + .bind = socfpga_a10_clk_bind, + .probe = socfpga_a10_clk_probe, + .of_to_plat = socfpga_a10_of_to_plat, + + .plat_auto = sizeof(struct socfpga_a10_clk_plat), +}; |