diff options
Diffstat (limited to 'arch/arm/mach-keystone/clock-k2e.c')
-rw-r--r-- | arch/arm/mach-keystone/clock-k2e.c | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/arch/arm/mach-keystone/clock-k2e.c b/arch/arm/mach-keystone/clock-k2e.c deleted file mode 100644 index 7d163a4..0000000 --- a/arch/arm/mach-keystone/clock-k2e.c +++ /dev/null @@ -1,95 +0,0 @@ -/* - * Keystone2: get clk rate for K2E - * - * (C) Copyright 2012-2014 - * Texas Instruments Incorporated, <www.ti.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/arch/clock.h> -#include <asm/arch/clock_defs.h> - -/** - * pll_freq_get - get pll frequency - * Fout = Fref * NF(mult) / NR(prediv) / OD - * @pll: pll identifier - */ -static unsigned long pll_freq_get(int pll) -{ - unsigned long mult = 1, prediv = 1, output_div = 2; - unsigned long ret; - u32 tmp, reg; - - if (pll == CORE_PLL) { - ret = external_clk[sys_clk]; - if (pllctl_reg_read(pll, ctl) & PLLCTL_PLLEN) { - /* PLL mode */ - tmp = __raw_readl(KS2_MAINPLLCTL0); - prediv = (tmp & PLL_DIV_MASK) + 1; - mult = (((tmp & PLLM_MULT_HI_SMASK) >> 6) | - (pllctl_reg_read(pll, mult) & - PLLM_MULT_LO_MASK)) + 1; - output_div = ((pllctl_reg_read(pll, secctl) >> - PLL_CLKOD_SHIFT) & PLL_CLKOD_MASK) + 1; - - ret = ret / prediv / output_div * mult; - } - } else { - switch (pll) { - case PASS_PLL: - ret = external_clk[pa_clk]; - reg = KS2_PASSPLLCTL0; - break; - case DDR3_PLL: - ret = external_clk[ddr3a_clk]; - reg = KS2_DDR3APLLCTL0; - break; - default: - return 0; - } - - tmp = __raw_readl(reg); - - if (!(tmp & PLLCTL_BYPASS)) { - /* Bypass disabled */ - prediv = (tmp & PLL_DIV_MASK) + 1; - mult = ((tmp >> PLL_MULT_SHIFT) & PLL_MULT_MASK) + 1; - output_div = ((tmp >> PLL_CLKOD_SHIFT) & - PLL_CLKOD_MASK) + 1; - ret = ((ret / prediv) * mult) / output_div; - } - } - - return ret; -} - -unsigned long clk_get_rate(unsigned int clk) -{ - switch (clk) { - case core_pll_clk: return pll_freq_get(CORE_PLL); - case pass_pll_clk: return pll_freq_get(PASS_PLL); - case ddr3_pll_clk: return pll_freq_get(DDR3_PLL); - case sys_clk0_1_clk: - case sys_clk0_clk: return pll_freq_get(CORE_PLL) / pll0div_read(1); - case sys_clk1_clk: return pll_freq_get(CORE_PLL) / pll0div_read(2); - case sys_clk2_clk: return pll_freq_get(CORE_PLL) / pll0div_read(3); - case sys_clk3_clk: return pll_freq_get(CORE_PLL) / pll0div_read(4); - case sys_clk0_2_clk: return clk_get_rate(sys_clk0_clk) / 2; - case sys_clk0_3_clk: return clk_get_rate(sys_clk0_clk) / 3; - case sys_clk0_4_clk: return clk_get_rate(sys_clk0_clk) / 4; - case sys_clk0_6_clk: return clk_get_rate(sys_clk0_clk) / 6; - case sys_clk0_8_clk: return clk_get_rate(sys_clk0_clk) / 8; - case sys_clk0_12_clk: return clk_get_rate(sys_clk0_clk) / 12; - case sys_clk0_24_clk: return clk_get_rate(sys_clk0_clk) / 24; - case sys_clk1_3_clk: return clk_get_rate(sys_clk1_clk) / 3; - case sys_clk1_4_clk: return clk_get_rate(sys_clk1_clk) / 4; - case sys_clk1_6_clk: return clk_get_rate(sys_clk1_clk) / 6; - case sys_clk1_12_clk: return clk_get_rate(sys_clk1_clk) / 12; - default: - break; - } - - return 0; -} |