From 50b82c4b702c59599c567fa82decb20d60f5110d Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 24 Feb 2015 11:45:09 +0900 Subject: ARM: remove tnetv107x board support This is still a non-generic board. Signed-off-by: Masahiro Yamada Cc: Chan-Taek Park Acked-by: Marek Vasut --- arch/arm/cpu/arm1176/tnetv107x/clock.c | 432 --------------------------------- 1 file changed, 432 deletions(-) delete mode 100644 arch/arm/cpu/arm1176/tnetv107x/clock.c (limited to 'arch/arm/cpu/arm1176/tnetv107x/clock.c') diff --git a/arch/arm/cpu/arm1176/tnetv107x/clock.c b/arch/arm/cpu/arm1176/tnetv107x/clock.c deleted file mode 100644 index 7ba28d329f..0000000000 --- a/arch/arm/cpu/arm1176/tnetv107x/clock.c +++ /dev/null @@ -1,432 +0,0 @@ -/* - * TNETV107X: Clock management APIs - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include -#include - -#define CLOCK_BASE TNETV107X_CLOCK_CONTROL_BASE -#define PSC_BASE TNETV107X_PSC_BASE - -#define BIT(x) (1 << (x)) - -#define MAX_PREDIV 64 -#define MAX_POSTDIV 8UL -#define MAX_MULT 512 -#define MAX_DIV (MAX_PREDIV * MAX_POSTDIV) - -/* LPSC registers */ -#define PSC_PTCMD 0x120 -#define PSC_PTSTAT 0x128 -#define PSC_MDSTAT(n) (0x800 + (n) * 4) -#define PSC_MDCTL(n) (0xA00 + (n) * 4) - -#define PSC_MDCTL_LRSTZ BIT(8) - -#define psc_reg_read(reg) __raw_readl((u32 *)(PSC_BASE + (reg))) -#define psc_reg_write(reg, val) __raw_writel(val, (u32 *)(PSC_BASE + (reg))) - -/* SSPLL registers */ -struct sspll_regs { - u32 modes; - u32 postdiv; - u32 prediv; - u32 mult_factor; - u32 divider_range; - u32 bw_divider; - u32 spr_amount; - u32 spr_rate_div; - u32 diag; -}; - -/* SSPLL base addresses */ -static struct sspll_regs *sspll_regs[] = { - (struct sspll_regs *)(CLOCK_BASE + 0x040), - (struct sspll_regs *)(CLOCK_BASE + 0x080), - (struct sspll_regs *)(CLOCK_BASE + 0x0c0), -}; - -#define sspll_reg(pll, reg) (&(sspll_regs[pll]->reg)) -#define sspll_reg_read(pll, reg) __raw_readl(sspll_reg(pll, reg)) -#define sspll_reg_write(pll, reg, val) __raw_writel(val, sspll_reg(pll, reg)) - - -/* PLL Control Registers */ -struct pllctl_regs { - u32 ctl; /* 00 */ - u32 ocsel; /* 04 */ - u32 secctl; /* 08 */ - u32 __pad0; - u32 mult; /* 10 */ - u32 prediv; /* 14 */ - u32 div1; /* 18 */ - u32 div2; /* 1c */ - u32 div3; /* 20 */ - u32 oscdiv1; /* 24 */ - u32 postdiv; /* 28 */ - u32 bpdiv; /* 2c */ - u32 wakeup; /* 30 */ - u32 __pad1; - u32 cmd; /* 38 */ - u32 stat; /* 3c */ - u32 alnctl; /* 40 */ - u32 dchange; /* 44 */ - u32 cken; /* 48 */ - u32 ckstat; /* 4c */ - u32 systat; /* 50 */ - u32 ckctl; /* 54 */ - u32 __pad2[2]; - u32 div4; /* 60 */ - u32 div5; /* 64 */ - u32 div6; /* 68 */ - u32 div7; /* 6c */ - u32 div8; /* 70 */ -}; - -struct lpsc_map { - int pll, div; -}; - -static struct pllctl_regs *pllctl_regs[] = { - (struct pllctl_regs *)(CLOCK_BASE + 0x700), - (struct pllctl_regs *)(CLOCK_BASE + 0x300), - (struct pllctl_regs *)(CLOCK_BASE + 0x500), -}; - -#define pllctl_reg(pll, reg) (&(pllctl_regs[pll]->reg)) -#define pllctl_reg_read(pll, reg) __raw_readl(pllctl_reg(pll, reg)) -#define pllctl_reg_write(pll, reg, val) __raw_writel(val, pllctl_reg(pll, reg)) - -#define pllctl_reg_rmw(pll, reg, mask, val) \ - pllctl_reg_write(pll, reg, \ - (pllctl_reg_read(pll, reg) & ~(mask)) | val) - -#define pllctl_reg_setbits(pll, reg, mask) \ - pllctl_reg_rmw(pll, reg, 0, mask) - -#define pllctl_reg_clrbits(pll, reg, mask) \ - pllctl_reg_rmw(pll, reg, mask, 0) - -/* PLLCTL Bits */ -#define PLLCTL_CLKMODE BIT(8) -#define PLLCTL_PLLSELB BIT(7) -#define PLLCTL_PLLENSRC BIT(5) -#define PLLCTL_PLLDIS BIT(4) -#define PLLCTL_PLLRST BIT(3) -#define PLLCTL_PLLPWRDN BIT(1) -#define PLLCTL_PLLEN BIT(0) - -#define PLLDIV_ENABLE BIT(15) - -static int pll_div_offset[] = { -#define div_offset(reg) offsetof(struct pllctl_regs, reg) - div_offset(div1), div_offset(div2), div_offset(div3), - div_offset(div4), div_offset(div5), div_offset(div6), - div_offset(div7), div_offset(div8), -}; - -static unsigned long pll_bypass_mask[] = { 1, 4, 2 }; -static unsigned long pll_div_mask[] = { 0x01ff, 0x00ff, 0x00ff }; - -/* Mappings from PLL+DIV to subsystem clocks */ -#define sys_arm1176_clk {SYS_PLL, 0} -#define sys_dsp_clk {SYS_PLL, 1} -#define sys_ddr_clk {SYS_PLL, 2} -#define sys_full_clk {SYS_PLL, 3} -#define sys_lcd_clk {SYS_PLL, 4} -#define sys_vlynq_ref_clk {SYS_PLL, 5} -#define sys_tsc_clk {SYS_PLL, 6} -#define sys_half_clk {SYS_PLL, 7} - -#define eth_clk_5 {ETH_PLL, 0} -#define eth_clk_50 {ETH_PLL, 1} -#define eth_clk_125 {ETH_PLL, 2} -#define eth_clk_250 {ETH_PLL, 3} -#define eth_clk_25 {ETH_PLL, 4} - -#define tdm_clk {TDM_PLL, 0} -#define tdm_extra_clk {TDM_PLL, 1} -#define tdm1_clk {TDM_PLL, 2} - -static const struct lpsc_map lpsc_clk_map[] = { - [TNETV107X_LPSC_ARM] = sys_arm1176_clk, - [TNETV107X_LPSC_GEM] = sys_dsp_clk, - [TNETV107X_LPSC_DDR2_PHY] = sys_ddr_clk, - [TNETV107X_LPSC_TPCC] = sys_full_clk, - [TNETV107X_LPSC_TPTC0] = sys_full_clk, - [TNETV107X_LPSC_TPTC1] = sys_full_clk, - [TNETV107X_LPSC_RAM] = sys_full_clk, - [TNETV107X_LPSC_MBX_LITE] = sys_arm1176_clk, - [TNETV107X_LPSC_LCD] = sys_lcd_clk, - [TNETV107X_LPSC_ETHSS] = eth_clk_125, - [TNETV107X_LPSC_AEMIF] = sys_full_clk, - [TNETV107X_LPSC_CHIP_CFG] = sys_half_clk, - [TNETV107X_LPSC_TSC] = sys_tsc_clk, - [TNETV107X_LPSC_ROM] = sys_half_clk, - [TNETV107X_LPSC_UART2] = sys_half_clk, - [TNETV107X_LPSC_PKTSEC] = sys_half_clk, - [TNETV107X_LPSC_SECCTL] = sys_half_clk, - [TNETV107X_LPSC_KEYMGR] = sys_half_clk, - [TNETV107X_LPSC_KEYPAD] = sys_half_clk, - [TNETV107X_LPSC_GPIO] = sys_half_clk, - [TNETV107X_LPSC_MDIO] = sys_half_clk, - [TNETV107X_LPSC_SDIO0] = sys_half_clk, - [TNETV107X_LPSC_UART0] = sys_half_clk, - [TNETV107X_LPSC_UART1] = sys_half_clk, - [TNETV107X_LPSC_TIMER0] = sys_half_clk, - [TNETV107X_LPSC_TIMER1] = sys_half_clk, - [TNETV107X_LPSC_WDT_ARM] = sys_half_clk, - [TNETV107X_LPSC_WDT_DSP] = sys_half_clk, - [TNETV107X_LPSC_SSP] = sys_half_clk, - [TNETV107X_LPSC_TDM0] = tdm_clk, - [TNETV107X_LPSC_VLYNQ] = sys_vlynq_ref_clk, - [TNETV107X_LPSC_MCDMA] = sys_half_clk, - [TNETV107X_LPSC_USB0] = sys_half_clk, - [TNETV107X_LPSC_TDM1] = tdm1_clk, - [TNETV107X_LPSC_DEBUGSS] = sys_half_clk, - [TNETV107X_LPSC_ETHSS_RGMII] = eth_clk_250, - [TNETV107X_LPSC_SYSTEM] = sys_half_clk, - [TNETV107X_LPSC_IMCOP] = sys_dsp_clk, - [TNETV107X_LPSC_SPARE] = sys_half_clk, - [TNETV107X_LPSC_SDIO1] = sys_half_clk, - [TNETV107X_LPSC_USB1] = sys_half_clk, - [TNETV107X_LPSC_USBSS] = sys_half_clk, - [TNETV107X_LPSC_DDR2_EMIF1_VRST] = sys_ddr_clk, - [TNETV107X_LPSC_DDR2_EMIF2_VCTL_RST] = sys_ddr_clk, -}; - -static const unsigned long pll_ext_freq[] = { - [SYS_PLL] = CONFIG_PLL_SYS_EXT_FREQ, - [ETH_PLL] = CONFIG_PLL_ETH_EXT_FREQ, - [TDM_PLL] = CONFIG_PLL_TDM_EXT_FREQ, -}; - -static unsigned long pll_freq_get(int pll) -{ - unsigned long mult = 1, prediv = 1, postdiv = 1; - unsigned long ref = CONFIG_SYS_INT_OSC_FREQ; - unsigned long ret; - u32 bypass; - - bypass = __raw_readl((u32 *)(CLOCK_BASE)); - if (!(bypass & pll_bypass_mask[pll])) { - mult = sspll_reg_read(pll, mult_factor); - prediv = sspll_reg_read(pll, prediv) + 1; - postdiv = sspll_reg_read(pll, postdiv) + 1; - } - - if (pllctl_reg_read(pll, ctl) & PLLCTL_CLKMODE) - ref = pll_ext_freq[pll]; - - if (!(pllctl_reg_read(pll, ctl) & PLLCTL_PLLEN)) - return ref; - - ret = (unsigned long)(ref + ((unsigned long long)ref * mult) / 256); - ret /= (prediv * postdiv); - - return ret; -} - -static unsigned long __pll_div_freq_get(int pll, unsigned int fpll, - int div) -{ - int divider = 1; - unsigned long divreg; - - divreg = __raw_readl((void *)pllctl_regs[pll] + pll_div_offset[div]); - - if (divreg & PLLDIV_ENABLE) - divider = (divreg & pll_div_mask[pll]) + 1; - - return fpll / divider; -} - -static unsigned long pll_div_freq_get(int pll, int div) -{ - unsigned int fpll = pll_freq_get(pll); - - return __pll_div_freq_get(pll, fpll, div); -} - -static void __pll_div_freq_set(int pll, unsigned int fpll, int div, - unsigned long hz) -{ - int divider = (fpll / hz - 1); - - divider &= pll_div_mask[pll]; - divider |= PLLDIV_ENABLE; - - __raw_writel(divider, (void *)pllctl_regs[pll] + pll_div_offset[div]); - pllctl_reg_setbits(pll, alnctl, (1 << div)); - pllctl_reg_setbits(pll, dchange, (1 << div)); -} - -static unsigned long pll_div_freq_set(int pll, int div, unsigned long hz) -{ - unsigned int fpll = pll_freq_get(pll); - - __pll_div_freq_set(pll, fpll, div, hz); - - pllctl_reg_write(pll, cmd, 1); - - /* Wait until new divider takes effect */ - while (pllctl_reg_read(pll, stat) & 0x01); - - return __pll_div_freq_get(pll, fpll, div); -} - -unsigned long clk_get_rate(unsigned int clk) -{ - return pll_div_freq_get(lpsc_clk_map[clk].pll, lpsc_clk_map[clk].div); -} - -unsigned long clk_round_rate(unsigned int clk, unsigned long hz) -{ - unsigned long fpll, divider, pll; - - pll = lpsc_clk_map[clk].pll; - fpll = pll_freq_get(pll); - divider = (fpll / hz - 1); - divider &= pll_div_mask[pll]; - - return fpll / (divider + 1); -} - -int clk_set_rate(unsigned int clk, unsigned long _hz) -{ - unsigned long hz; - - hz = clk_round_rate(clk, _hz); - if (hz != _hz) - return -EINVAL; /* Cannot set to target freq */ - - pll_div_freq_set(lpsc_clk_map[clk].pll, lpsc_clk_map[clk].div, hz); - return 0; -} - -void lpsc_control(int mod, unsigned long state, int lrstz) -{ - u32 mdctl; - - mdctl = psc_reg_read(PSC_MDCTL(mod)); - mdctl &= ~0x1f; - mdctl |= state; - - if (lrstz == 0) - mdctl &= ~PSC_MDCTL_LRSTZ; - else if (lrstz == 1) - mdctl |= PSC_MDCTL_LRSTZ; - - psc_reg_write(PSC_MDCTL(mod), mdctl); - - psc_reg_write(PSC_PTCMD, 1); - - /* wait for power domain transition to end */ - while (psc_reg_read(PSC_PTSTAT) & 1); - - /* Wait for module state change */ - while ((psc_reg_read(PSC_MDSTAT(mod)) & 0x1f) != state); -} - -int lpsc_status(unsigned int id) -{ - return psc_reg_read(PSC_MDSTAT(id)) & 0x1f; -} - -static void init_pll(const struct pll_init_data *data) -{ - unsigned long fpll; - unsigned long best_pre = 0, best_post = 0, best_mult = 0; - unsigned long div, prediv, postdiv, mult; - unsigned long delta, actual; - long best_delta = -1; - int i; - u32 tmp; - - if (data->pll == SYS_PLL) - return; /* cannot reconfigure system pll on the fly */ - - tmp = pllctl_reg_read(data->pll, ctl); - if (data->internal_osc) { - tmp &= ~PLLCTL_CLKMODE; - fpll = CONFIG_SYS_INT_OSC_FREQ; - } else { - tmp |= PLLCTL_CLKMODE; - fpll = pll_ext_freq[data->pll]; - } - pllctl_reg_write(data->pll, ctl, tmp); - - mult = data->pll_freq / fpll; - for (mult = max(mult, 1UL); mult <= MAX_MULT; mult++) { - div = (fpll * mult) / data->pll_freq; - if (div < 1 || div > MAX_DIV) - continue; - - for (postdiv = 1; postdiv <= min(div, MAX_POSTDIV); postdiv++) { - prediv = div / postdiv; - if (prediv < 1 || prediv > MAX_PREDIV) - continue; - - actual = (fpll / prediv) * (mult / postdiv); - delta = (actual - data->pll_freq); - if (delta < 0) - delta = -delta; - if ((delta < best_delta) || (best_delta == -1)) { - best_delta = delta; - best_mult = mult; - best_pre = prediv; - best_post = postdiv; - if (delta == 0) - goto done; - } - } - } -done: - - if (best_delta == -1) { - printf("pll cannot derive %lu from %lu\n", - data->pll_freq, fpll); - return; - } - - fpll = fpll * best_mult; - fpll /= best_pre * best_post; - - pllctl_reg_clrbits(data->pll, ctl, PLLCTL_PLLENSRC); - pllctl_reg_clrbits(data->pll, ctl, PLLCTL_PLLEN); - - pllctl_reg_setbits(data->pll, ctl, PLLCTL_PLLRST); - - pllctl_reg_clrbits(data->pll, ctl, PLLCTL_PLLPWRDN); - pllctl_reg_clrbits(data->pll, ctl, PLLCTL_PLLDIS); - - sspll_reg_write(data->pll, mult_factor, (best_mult - 1) << 8); - sspll_reg_write(data->pll, prediv, best_pre - 1); - sspll_reg_write(data->pll, postdiv, best_post - 1); - - for (i = 0; i < 10; i++) - if (data->div_freq[i]) - __pll_div_freq_set(data->pll, fpll, i, - data->div_freq[i]); - - pllctl_reg_write(data->pll, cmd, 1); - - /* Wait until pll "go" operation completes */ - while (pllctl_reg_read(data->pll, stat) & 0x01); - - pllctl_reg_clrbits(data->pll, ctl, PLLCTL_PLLRST); - pllctl_reg_setbits(data->pll, ctl, PLLCTL_PLLEN); -} - -void init_plls(int num_pll, struct pll_init_data *config) -{ - int i; - - for (i = 0; i < num_pll; i++) - init_pll(&config[i]); -} -- cgit