diff options
Diffstat (limited to 'arch/arm/mach-uniphier/ph1-pro4/pll_init.c')
| -rw-r--r-- | arch/arm/mach-uniphier/ph1-pro4/pll_init.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/arch/arm/mach-uniphier/ph1-pro4/pll_init.c b/arch/arm/mach-uniphier/ph1-pro4/pll_init.c deleted file mode 100644 index d693368..0000000 --- a/arch/arm/mach-uniphier/ph1-pro4/pll_init.c +++ /dev/null @@ -1,151 +0,0 @@ -/* - * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <linux/io.h> -#include <mach/sc-regs.h> -#include <mach/sg-regs.h> - -#undef DPLL_SSC_RATE_1PER - -static void dpll_init(void) -{ - u32 tmp; - - /* - * Set Frequency - * Set 0xc(1600MHz)/0xd(1333MHz)/0xe(1066MHz) - * to FOUT ( DPLLCTRL.bit[29:20] ) - */ - tmp = readl(SC_DPLLCTRL); - tmp &= ~(0x000f0000); -#if CONFIG_DDR_FREQ == 1600 - tmp |= 0x000c0000; -#elif CONFIG_DDR_FREQ == 1333 - tmp |= 0x000d0000; -#else -# error "Unsupported frequency" -#endif - - /* - * Set Moduration rate - * Set 0x0(1%)/0x1(2%) to SSC_RATE(DPLLCTRL.bit[15]) - */ -#if defined(DPLL_SSC_RATE_1PER) - tmp &= ~0x00008000; -#else - tmp |= 0x00008000; -#endif - writel(tmp, SC_DPLLCTRL); - - tmp = readl(SC_DPLLCTRL2); - tmp |= SC_DPLLCTRL2_NRSTDS; - writel(tmp, SC_DPLLCTRL2); -} - -static void vpll_init(void) -{ - u32 tmp, clk_mode_axosel; - - /* Set VPLL27A & VPLL27B */ - tmp = readl(SG_PINMON0); - clk_mode_axosel = tmp & SG_PINMON0_CLK_MODE_AXOSEL_MASK; - -#if defined(CONFIG_MACH_PH1_PRO4) - /* 25MHz or 6.25MHz is default for Pro4R, no need to set VPLLA/B */ - if (clk_mode_axosel == SG_PINMON0_CLK_MODE_AXOSEL_25000KHZ || - clk_mode_axosel == SG_PINMON0_CLK_MODE_AXOSEL_6250KHZ) - return; -#endif - - /* Disable write protect of VPLL27ACTRL[2-7]*, VPLL27BCTRL[2-8] */ - tmp = readl(SC_VPLL27ACTRL); - tmp |= 0x00000001; - writel(tmp, SC_VPLL27ACTRL); - tmp = readl(SC_VPLL27BCTRL); - tmp |= 0x00000001; - writel(tmp, SC_VPLL27BCTRL); - - /* Unset VPLA_K_LD and VPLB_K_LD bit */ - tmp = readl(SC_VPLL27ACTRL3); - tmp &= ~0x10000000; - writel(tmp, SC_VPLL27ACTRL3); - tmp = readl(SC_VPLL27BCTRL3); - tmp &= ~0x10000000; - writel(tmp, SC_VPLL27BCTRL3); - - /* Set VPLA_M and VPLB_M to 0x20 */ - tmp = readl(SC_VPLL27ACTRL2); - tmp &= ~0x0000007f; - tmp |= 0x00000020; - writel(tmp, SC_VPLL27ACTRL2); - tmp = readl(SC_VPLL27BCTRL2); - tmp &= ~0x0000007f; - tmp |= 0x00000020; - writel(tmp, SC_VPLL27BCTRL2); - - if (clk_mode_axosel == SG_PINMON0_CLK_MODE_AXOSEL_25000KHZ || - clk_mode_axosel == SG_PINMON0_CLK_MODE_AXOSEL_6250KHZ) { - /* Set VPLA_K and VPLB_K for AXO: 25MHz */ - tmp = readl(SC_VPLL27ACTRL3); - tmp &= ~0x000fffff; - tmp |= 0x00066666; - writel(tmp, SC_VPLL27ACTRL3); - tmp = readl(SC_VPLL27BCTRL3); - tmp &= ~0x000fffff; - tmp |= 0x00066666; - writel(tmp, SC_VPLL27BCTRL3); - } else { - /* Set VPLA_K and VPLB_K for AXO: 24.576 MHz */ - tmp = readl(SC_VPLL27ACTRL3); - tmp &= ~0x000fffff; - tmp |= 0x000f5800; - writel(tmp, SC_VPLL27ACTRL3); - tmp = readl(SC_VPLL27BCTRL3); - tmp &= ~0x000fffff; - tmp |= 0x000f5800; - writel(tmp, SC_VPLL27BCTRL3); - } - - /* wait 1 usec */ - udelay(1); - - /* Set VPLA_K_LD and VPLB_K_LD to load K parameters */ - tmp = readl(SC_VPLL27ACTRL3); - tmp |= 0x10000000; - writel(tmp, SC_VPLL27ACTRL3); - tmp = readl(SC_VPLL27BCTRL3); - tmp |= 0x10000000; - writel(tmp, SC_VPLL27BCTRL3); - - /* Unset VPLA_SNRST and VPLB_SNRST bit */ - tmp = readl(SC_VPLL27ACTRL2); - tmp |= 0x10000000; - writel(tmp, SC_VPLL27ACTRL2); - tmp = readl(SC_VPLL27BCTRL2); - tmp |= 0x10000000; - writel(tmp, SC_VPLL27BCTRL2); - - /* Enable write protect of VPLL27ACTRL[2-7]*, VPLL27BCTRL[2-8] */ - tmp = readl(SC_VPLL27ACTRL); - tmp &= ~0x00000001; - writel(tmp, SC_VPLL27ACTRL); - tmp = readl(SC_VPLL27BCTRL); - tmp &= ~0x00000001; - writel(tmp, SC_VPLL27BCTRL); -} - -void pll_init(void) -{ - dpll_init(); - vpll_init(); - - /* - * Wait 500 usec until dpll get stable - * We wait 1 usec in vpll_init() so 1 usec can be saved here. - */ - udelay(499); -} |