diff options
Diffstat (limited to 'src/soc/imgtec/pistachio/clocks.c')
| -rw-r--r-- | src/soc/imgtec/pistachio/clocks.c | 513 |
1 files changed, 0 insertions, 513 deletions
diff --git a/src/soc/imgtec/pistachio/clocks.c b/src/soc/imgtec/pistachio/clocks.c deleted file mode 100644 index aa54ebc43e..0000000000 --- a/src/soc/imgtec/pistachio/clocks.c +++ /dev/null @@ -1,513 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014 Imagination Technologies - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; version 2 of - * the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <device/mmio.h> -#include <assert.h> -#include <delay.h> -#include <soc/clocks.h> -#include <timer.h> - -/* Definitions for PLL enable */ -#define PISTACHIO_CLOCK_SWITCH 0xB8144200 - -#define SYS_EXTERN_PLL_BYPASS_MASK 0x00002000 -#define SYS_PLL_CTRL4_ADDR 0xB8144048 -#define SYS_INTERNAL_PLL_BYPASS_MASK 0x10000000 -#define SYS_PLL_PD_CTRL_ADDR 0xB8144044 -#define SYS_PLL_PD_CTRL_PD_MASK 0x00000039 -#define SYS_PLL_DACPD_ADDR 0xB8144044 -#define SYS_PLL_DACPD_MASK 0x00000002 -#define SYS_PLL_DSMPD_ADDR 0xB8144044 -#define SYS_PLL_DSMPD_MASK 0x00000004 - -#define MIPS_EXTERN_PLL_BYPASS_MASK 0x00000002 -#define MIPS_PLL_CTRL2_ADDR 0xB8144008 -#define MIPS_INTERNAL_PLL_BYPASS_MASK 0x10000000 -#define MIPS_PLL_PD_CTRL_ADDR 0xB8144004 -#define MIPS_PLL_PD_CTRL_PD_MASK 0x0D000000 -#define MIPS_PLL_DSMPD_ADDR 0xB8144004 -#define MIPS_PLL_DSMPD_MASK 0x02000000 - -/* Definitions for PLL dividers */ -#define SYS_PLL_POSTDIV_ADDR 0xB8144040 -#define SYS_PLL_POSTDIV1_MASK 0x07000000 -#define SYS_PLL_POSTDIV1_SHIFT 24 -#define SYS_PLL_POSTDIV2_MASK 0x38000000 -#define SYS_PLL_POSTDIV2_SHIFT 27 -#define SYS_PLL_STATUS_ADDR 0xB8144038 -#define SYS_PLL_STATUS_LOCK_MASK 0x00000001 - -#define SYS_PLL_REFDIV_ADDR 0xB814403C -#define SYS_PLL_REFDIV_MASK 0x0000003F -#define SYS_PLL_REFDIV_SHIFT 0 -#define SYS_PLL_FEEDBACK_ADDR 0xB814403C -#define SYS_PLL_FEEDBACK_MASK 0x0003FFC0 -#define SYS_PLL_FEEDBACK_SHIFT 6 - -#define MIPS_PLL_POSTDIV_ADDR 0xB8144004 -#define MIPS_PLL_POSTDIV1_MASK 0x001C0000 -#define MIPS_PLL_POSTDIV1_SHIFT 18 -#define MIPS_PLL_POSTDIV2_MASK 0x00E00000 -#define MIPS_PLL_POSTDIV2_SHIFT 21 -#define MIPS_PLL_STATUS_ADDR 0xB8144000 -#define MIPS_PLL_STATUS_LOCK_MASK 0x00000001 - -#define MIPS_REFDIV_ADDR 0xB8144004 -#define MIPS_REFDIV_MASK 0x0000003F -#define MIPS_REFDIV_SHIFT 0 -#define MIPS_FEEDBACK_ADDR 0xB8144004 -#define MIPS_FEEDBACK_MASK 0x0003FFC0 -#define MIPS_FEEDBACK_SHIFT 6 - -/* Definitions for system clock setup */ -#define SYSCLKINTERNAL_CTRL_ADDR 0xB8144244 -#define SYSCLKINTERNAL_MASK 0X00000007 - -/* Definitions for MIPS clock setup */ -#define MIPSCLKINTERNAL_CTRL_ADDR 0xB8144204 -#define MIPSCLKINTERNAL_MASK 0x00000003 -#define MIPSCLKOUT_CTRL_ADDR 0xB8144208 -#define MIPSCLKOUT_MASK 0x000000FF - -/* Peripheral Clock gate reg */ -#define MIPS_CLOCK_GATE_ADDR 0xB8144900 -#define RPU_CLOCK_GATE_ADDR 0xB8144904 -#define MIPS_CLOCK_GATE_ALL_ON 0x3fff -#define RPU_CLOCK_GATE_ALL_OFF 0x0 - -/* Definitions for USB clock setup */ -#define USBPHYCLKOUT_CTRL_ADDR 0xB814422C -#define USBPHYCLKOUT_MASK 0X0000003F -#define USBPHYCONTROL1_ADDR 0xB8149004 -#define USBPHYCONTROL1_FSEL_SHIFT 2 -#define USBPHYCONTROL1_FSEL_MASK 0x1C -#define USBPHYSTRAPCTRL_ADDR 0xB8149010 -#define USBPHYSTRAPCTRL_REFCLKSEL_SHIFT 4 -#define USBPHYSTRAPCTRL_REFCLKSEL_MASK 0x30 -#define USBPHYSTATUS_ADDR 0xB8149014 -#define USBPHYSTATUS_RX_PHY_CLK_MASK 0x200 -#define USBPHYSTATUS_RX_UTMI_CLK_MASK 0x100 -#define USBPHYSTATUS_VBUS_FAULT_MASK 0x80 - -/* Definitions for UART0/1 setup */ -#define UART0CLKINTERNAL_CTRL_ADDR 0xB8144234 -#define UART0CLKINTERNAL_MASK 0x00000007 -#define UART0CLKOUT_CTRL_ADDR 0xB8144238 -#define UART0CLKOUT_MASK 0x000003FF -#define UART1CLKINTERNAL_CTRL_ADDR 0xB814423C -#define UART1CLKINTERNAL_MASK 0x00000007 -#define UART1CLKOUT_CTRL_ADDR 0xB8144240 -#define UART1CLKOUT_MASK 0x000003FF - -/* Definitions for I2C setup */ -#define I2CCLKDIV1_CTRL_ADDR(i) (0xB8144800 + 0x013C + (2*(i)*4)) -#define I2CCLKDIV1_MASK 0x0000007F -#define I2CCLKOUT_CTRL_ADDR(i) (0xB8144800 + 0x0140 + (2*(i)*4)) -#define I2CCLKOUT_MASK 0x0000007F - -/* Definitions for ROM clock setup */ -#define ROMCLKOUT_CTRL_ADDR 0xB814490C -#define ROMCLKOUT_MASK 0x0000007F - -/* Definitions for ETH clock setup */ -#define ENETCLKMUX_MASK 0x00004000 -#define ENETCLKDIV_CTRL_ADDR 0xB8144230 -#define ENETCLKDIV_MASK 0x0000003F - -/* Definitions for timeout values */ -#define PLL_TIMEOUT_VALUE_US 20000 -#define USB_TIMEOUT_VALUE_US 200000 -#define SYS_CLK_LOCK_DELAY 3 - -struct pll_parameters { - u32 external_bypass_mask; - u32 ctrl_addr; - u32 internal_bypass_mask; - u32 power_down_ctrl_addr; - u32 power_down_ctrl_mask; - u32 dacpd_addr; - u32 dacpd_mask; - u32 dsmpd_addr; - u32 dsmpd_mask; - u32 postdiv_addr; - u32 postdiv1_shift; - u32 postdiv1_mask; - u32 postdiv2_shift; - u32 postdiv2_mask; - u32 status_addr; - u32 status_lock_mask; - u32 refdivider; - u32 refdiv_addr; - u32 refdiv_shift; - u32 refdiv_mask; - u32 feedback; - u32 feedback_addr; - u32 feedback_shift; - u32 feedback_mask; -}; - -enum plls { - SYS_PLL = 0, - MIPS_PLL = 1 -}; - -static struct pll_parameters pll_params[] = { - [SYS_PLL] = { - .external_bypass_mask = SYS_EXTERN_PLL_BYPASS_MASK, - .ctrl_addr = SYS_PLL_CTRL4_ADDR, - .internal_bypass_mask = SYS_INTERNAL_PLL_BYPASS_MASK, - .power_down_ctrl_addr = SYS_PLL_PD_CTRL_ADDR, - .power_down_ctrl_mask = SYS_PLL_PD_CTRL_PD_MASK, - /* Noise cancellation */ - .dacpd_addr = SYS_PLL_DACPD_ADDR, - .dacpd_mask = SYS_PLL_DACPD_MASK, - .dsmpd_addr = SYS_PLL_DSMPD_ADDR, - /* 0 - Integer mode - * SYS_PLL_DSMPD_MASK - Fractional mode - */ - .dsmpd_mask = 0, - .postdiv_addr = SYS_PLL_POSTDIV_ADDR, - .postdiv1_shift = SYS_PLL_POSTDIV1_SHIFT, - .postdiv1_mask = SYS_PLL_POSTDIV1_MASK, - .postdiv2_shift = SYS_PLL_POSTDIV2_SHIFT, - .postdiv2_mask = SYS_PLL_POSTDIV2_MASK, - .status_addr = SYS_PLL_STATUS_ADDR, - .status_lock_mask = SYS_PLL_STATUS_LOCK_MASK, - .refdivider = 0, /* Not defined yet */ - .refdiv_addr = SYS_PLL_REFDIV_ADDR, - .refdiv_shift = SYS_PLL_REFDIV_SHIFT, - .refdiv_mask = SYS_PLL_REFDIV_MASK, - .feedback = 0, /* Not defined yet */ - .feedback_addr = SYS_PLL_FEEDBACK_ADDR, - .feedback_shift = SYS_PLL_FEEDBACK_SHIFT, - .feedback_mask = SYS_PLL_FEEDBACK_MASK - }, - - [MIPS_PLL] = { - .external_bypass_mask = MIPS_EXTERN_PLL_BYPASS_MASK, - .ctrl_addr = MIPS_PLL_CTRL2_ADDR, - .internal_bypass_mask = MIPS_INTERNAL_PLL_BYPASS_MASK, - .power_down_ctrl_addr = MIPS_PLL_PD_CTRL_ADDR, - .power_down_ctrl_mask = MIPS_PLL_PD_CTRL_PD_MASK, - .dacpd_addr = 0, - .dacpd_mask = 0, - .dsmpd_addr = MIPS_PLL_DSMPD_ADDR, - .dsmpd_mask = MIPS_PLL_DSMPD_MASK, - .postdiv_addr = MIPS_PLL_POSTDIV_ADDR, - .postdiv1_shift = MIPS_PLL_POSTDIV1_SHIFT, - .postdiv1_mask = MIPS_PLL_POSTDIV1_MASK, - .postdiv2_shift = MIPS_PLL_POSTDIV2_SHIFT, - .postdiv2_mask = MIPS_PLL_POSTDIV2_MASK, - .status_addr = MIPS_PLL_STATUS_ADDR, - .status_lock_mask = MIPS_PLL_STATUS_LOCK_MASK, - .refdivider = 0, /* Not defined yet */ - .refdiv_addr = MIPS_REFDIV_ADDR, - .refdiv_shift = MIPS_REFDIV_SHIFT, - .refdiv_mask = MIPS_REFDIV_MASK, - .feedback = 0, /* Not defined yet */ - .feedback_addr = MIPS_FEEDBACK_ADDR, - .feedback_shift = MIPS_FEEDBACK_SHIFT, - .feedback_mask = MIPS_FEEDBACK_MASK - } -}; - -static int pll_setup(struct pll_parameters *param, u8 divider1, u8 divider2) -{ - u32 reg; - struct stopwatch sw; - - /* Check input parameters */ - assert(!((divider1 << param->postdiv1_shift) & - ~(param->postdiv1_mask))); - assert(!((divider2 << param->postdiv2_shift) & - ~(param->postdiv2_mask))); - - /* Temporary bypass PLL (select XTAL as clock input) */ - reg = read32_x(PISTACHIO_CLOCK_SWITCH); - reg &= ~(param->external_bypass_mask); - write32_x(PISTACHIO_CLOCK_SWITCH, reg); - - /* Un-bypass PLL's internal bypass */ - reg = read32_x(param->ctrl_addr); - reg &= ~(param->internal_bypass_mask); - write32_x(param->ctrl_addr, reg); - - /* Disable power down */ - reg = read32_x(param->power_down_ctrl_addr); - reg &= ~(param->power_down_ctrl_mask); - write32_x(param->power_down_ctrl_addr, reg); - - /* Noise cancellation */ - if (param->dacpd_addr) { - reg = read32_x(param->dacpd_addr); - reg &= ~(param->dacpd_mask); - write32_x(param->dacpd_addr, reg); - } - - /* Functional mode */ - if (param->dsmpd_addr) { - reg = read32_x(param->dsmpd_addr); - reg &= ~(param->dsmpd_mask); - write32_x(param->dsmpd_addr, reg); - } - - if (param->feedback_addr) { - assert(!((param->feedback << param->feedback_shift) & - ~(param->feedback_mask))); - reg = read32_x(param->feedback_addr); - reg &= ~(param->feedback_mask); - reg |= (param->feedback << param->feedback_shift) & - param->feedback_mask; - write32_x(param->feedback_addr, reg); - } - - if (param->refdiv_addr) { - assert(!((param->refdivider << param->refdiv_shift) & - ~(param->refdiv_mask))); - reg = read32_x(param->refdiv_addr); - reg &= ~(param->refdiv_mask); - reg |= (param->refdivider << param->refdiv_shift) & - param->refdiv_mask; - write32_x(param->refdiv_addr, reg); - } - - /* Read postdivider register value */ - reg = read32_x(param->postdiv_addr); - /* Set divider 1 */ - reg &= ~(param->postdiv1_mask); - reg |= (divider1 << param->postdiv1_shift) & - param->postdiv1_mask; - /* Set divider 2 */ - reg &= ~(param->postdiv2_mask); - reg |= (divider2 << param->postdiv2_shift) & - param->postdiv2_mask; - /* Write back to register */ - write32_x(param->postdiv_addr, reg); - - /* Waiting for PLL to lock*/ - stopwatch_init_usecs_expire(&sw, PLL_TIMEOUT_VALUE_US); - while (!(read32_x(param->status_addr) & param->status_lock_mask)) { - if (stopwatch_expired(&sw)) - return PLL_TIMEOUT; - } - - /* Start using PLL */ - reg = read32_x(PISTACHIO_CLOCK_SWITCH); - reg |= param->external_bypass_mask; - write32_x(PISTACHIO_CLOCK_SWITCH, reg); - - return CLOCKS_OK; -} - -int sys_pll_setup(u8 divider1, u8 divider2, u8 refdivider, u32 feedback) -{ - pll_params[SYS_PLL].refdivider = refdivider; - pll_params[SYS_PLL].feedback = feedback; - return pll_setup(&(pll_params[SYS_PLL]), divider1, divider2); -} - -int mips_pll_setup(u8 divider1, u8 divider2, u8 refdivider, u32 feedback) -{ - pll_params[MIPS_PLL].refdivider = refdivider; - pll_params[MIPS_PLL].feedback = feedback; - return pll_setup(&(pll_params[MIPS_PLL]), divider1, divider2); -} - -/* - * uart1_clk_setup: sets up clocks for UART1 - * divider1: 3-bit divider value - * divider2: 10-bit divider value - */ -void uart1_clk_setup(u8 divider1, u16 divider2) -{ - u32 reg; - - /* Check input parameters */ - assert(!(divider1 & ~(UART1CLKINTERNAL_MASK))); - assert(!(divider2 & ~(UART1CLKOUT_MASK))); - - /* Set divider 1 */ - reg = read32_x(UART1CLKINTERNAL_CTRL_ADDR); - reg &= ~UART1CLKINTERNAL_MASK; - reg |= divider1 & UART1CLKINTERNAL_MASK; - write32_x(UART1CLKINTERNAL_CTRL_ADDR, reg); - - /* Set divider 2 */ - reg = read32_x(UART1CLKOUT_CTRL_ADDR); - reg &= ~UART1CLKOUT_MASK; - reg |= divider2 & UART1CLKOUT_MASK; - write32_x(UART1CLKOUT_CTRL_ADDR, reg); -} - -/* - * i2c_clk_setup: sets up clocks for I2C - * divider1: 7-bit divider value - * divider2: 7-bit divider value - */ -void i2c_clk_setup(u8 divider1, u16 divider2, u8 interface) -{ - u32 reg; - - /* Check input parameters */ - assert(!(divider1 & ~(I2CCLKDIV1_MASK))); - assert(!(divider2 & ~(I2CCLKOUT_MASK))); - assert(interface < 4); - /* Set divider 1 */ - reg = read32_x(I2CCLKDIV1_CTRL_ADDR(interface)); - reg &= ~I2CCLKDIV1_MASK; - reg |= divider1 & I2CCLKDIV1_MASK; - write32_x(I2CCLKDIV1_CTRL_ADDR(interface), reg); - - /* Set divider 2 */ - reg = read32_x(I2CCLKOUT_CTRL_ADDR(interface)); - reg &= ~I2CCLKOUT_MASK; - reg |= divider2 & I2CCLKOUT_MASK; - write32_x(I2CCLKOUT_CTRL_ADDR(interface), reg); -} - -/* system_clk_setup: sets up the system (peripheral) clock */ -void system_clk_setup(u8 divider) -{ - u32 reg; - - /* Check input parameters */ - assert(!(divider & ~(SYSCLKINTERNAL_MASK))); - - /* Set system clock divider */ - reg = read32_x(SYSCLKINTERNAL_CTRL_ADDR); - reg &= ~SYSCLKINTERNAL_MASK; - reg |= divider & SYSCLKINTERNAL_MASK; - write32_x(SYSCLKINTERNAL_CTRL_ADDR, reg); - - /* Small delay to cover a maximum lock time of 1500 cycles */ - udelay(SYS_CLK_LOCK_DELAY); -} - -void mips_clk_setup(u8 divider1, u8 divider2) -{ - u32 reg; - - /* Check input parameters */ - assert(!(divider1 & ~(MIPSCLKINTERNAL_MASK))); - assert(!(divider2 & ~(MIPSCLKOUT_MASK))); - - /* Set divider 1 */ - reg = read32_x(MIPSCLKINTERNAL_CTRL_ADDR); - reg &= ~MIPSCLKINTERNAL_MASK; - reg |= divider1 & MIPSCLKINTERNAL_MASK; - write32_x(MIPSCLKINTERNAL_CTRL_ADDR, reg); - - /* Set divider 2 */ - reg = read32_x(MIPSCLKOUT_CTRL_ADDR); - reg &= ~MIPSCLKOUT_MASK; - reg |= divider2 & MIPSCLKOUT_MASK; - write32_x(MIPSCLKOUT_CTRL_ADDR, reg); -} - -/* usb_clk_setup: sets up USB clock */ -int usb_clk_setup(u8 divider, u8 refclksel, u8 fsel) -{ - u32 reg; - struct stopwatch sw; - - /* Check input parameters */ - assert(!(divider & ~(USBPHYCLKOUT_MASK))); - assert(!((refclksel << USBPHYSTRAPCTRL_REFCLKSEL_SHIFT) & - ~(USBPHYSTRAPCTRL_REFCLKSEL_MASK))); - assert(!((fsel << USBPHYCONTROL1_FSEL_SHIFT) & - ~(USBPHYCONTROL1_FSEL_MASK))); - - /* Set USB divider */ - reg = read32_x(USBPHYCLKOUT_CTRL_ADDR); - reg &= ~USBPHYCLKOUT_MASK; - reg |= divider & USBPHYCLKOUT_MASK; - write32_x(USBPHYCLKOUT_CTRL_ADDR, reg); - - /* Set REFCLKSEL */ - reg = read32_x(USBPHYSTRAPCTRL_ADDR); - reg &= ~USBPHYSTRAPCTRL_REFCLKSEL_MASK; - reg |= (refclksel << USBPHYSTRAPCTRL_REFCLKSEL_SHIFT) & - USBPHYSTRAPCTRL_REFCLKSEL_MASK; - write32_x(USBPHYSTRAPCTRL_ADDR, reg); - - /* Set FSEL */ - reg = read32_x(USBPHYCONTROL1_ADDR); - reg &= ~USBPHYCONTROL1_FSEL_MASK; - reg |= (fsel << USBPHYCONTROL1_FSEL_SHIFT) & - USBPHYCONTROL1_FSEL_MASK; - write32_x(USBPHYCONTROL1_ADDR, reg); - - /* Waiting for USB clock status */ - stopwatch_init_usecs_expire(&sw, USB_TIMEOUT_VALUE_US); - while (1) { - reg = read32_x(USBPHYSTATUS_ADDR); - if (reg & USBPHYSTATUS_VBUS_FAULT_MASK) - return USB_VBUS_FAULT; - if (stopwatch_expired(&sw)) - return USB_TIMEOUT; - /* Check if USB is set up properly */ - if ((reg & USBPHYSTATUS_RX_PHY_CLK_MASK) && - (reg & USBPHYSTATUS_RX_UTMI_CLK_MASK)) - break; - } - - return CLOCKS_OK; -} - -void rom_clk_setup(u8 divider) -{ - u32 reg; - - /* Check input parameter */ - assert(!(divider & ~(ROMCLKOUT_MASK))); - - /* Set ROM divider */ - reg = read32_x(ROMCLKOUT_CTRL_ADDR); - reg &= ~ROMCLKOUT_MASK; - reg |= divider & ROMCLKOUT_MASK; - write32_x(ROMCLKOUT_CTRL_ADDR, reg); -} - -void eth_clk_setup(u8 mux, u8 divider) -{ - - u32 reg; - - /* Check input parameters */ - assert(!(divider & ~(ENETCLKDIV_MASK))); - /* This can be either 0 or 1, selecting between - * ENET and system clock as clocksource */ - assert(!(mux & ~(0x1))); - - /* Set ETH divider */ - reg = read32_x(ENETCLKDIV_CTRL_ADDR); - reg &= ~ENETCLKDIV_MASK; - reg |= divider & ENETCLKDIV_MASK; - write32_x(ENETCLKDIV_CTRL_ADDR, reg); - - /* Select source */ - if (mux) { - reg = read32_x(PISTACHIO_CLOCK_SWITCH); - reg |= ENETCLKMUX_MASK; - write32_x(PISTACHIO_CLOCK_SWITCH, reg); - } -} - -void setup_clk_gate_defaults(void) -{ - write32_x(MIPS_CLOCK_GATE_ADDR, MIPS_CLOCK_GATE_ALL_ON); - write32_x(RPU_CLOCK_GATE_ADDR, RPU_CLOCK_GATE_ALL_OFF); -} |