diff options
Diffstat (limited to 'drivers/clk/loongson1/clk-loongson1b.c')
| -rw-r--r-- | drivers/clk/loongson1/clk-loongson1b.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/drivers/clk/loongson1/clk-loongson1b.c b/drivers/clk/loongson1/clk-loongson1b.c deleted file mode 100644 index 13a2ca23a159..000000000000 --- a/drivers/clk/loongson1/clk-loongson1b.c +++ /dev/null @@ -1,118 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (c) 2012-2016 Zhang, Keguang <keguang.zhang@gmail.com> - */ - -#include <linux/clkdev.h> -#include <linux/clk-provider.h> -#include <linux/io.h> -#include <linux/err.h> - -#include <loongson1.h> -#include "clk.h" - -#define OSC (33 * 1000000) -#define DIV_APB 2 - -static DEFINE_SPINLOCK(_lock); - -static unsigned long ls1x_pll_recalc_rate(struct clk_hw *hw, - unsigned long parent_rate) -{ - u32 pll, rate; - - pll = __raw_readl(LS1X_CLK_PLL_FREQ); - rate = 12 + (pll & GENMASK(5, 0)); - rate *= OSC; - rate >>= 1; - - return rate; -} - -static const struct clk_ops ls1x_pll_clk_ops = { - .recalc_rate = ls1x_pll_recalc_rate, -}; - -static const char *const cpu_parents[] = { "cpu_clk_div", "osc_clk", }; -static const char *const ahb_parents[] = { "ahb_clk_div", "osc_clk", }; -static const char *const dc_parents[] = { "dc_clk_div", "osc_clk", }; - -void __init ls1x_clk_init(void) -{ - struct clk_hw *hw; - - hw = clk_hw_register_fixed_rate(NULL, "osc_clk", NULL, 0, OSC); - clk_hw_register_clkdev(hw, "osc_clk", NULL); - - /* clock derived from 33 MHz OSC clk */ - hw = clk_hw_register_pll(NULL, "pll_clk", "osc_clk", - &ls1x_pll_clk_ops, 0); - clk_hw_register_clkdev(hw, "pll_clk", NULL); - - /* clock derived from PLL clk */ - /* _____ - * _______________________| | - * OSC ___/ | MUX |___ CPU CLK - * \___ PLL ___ CPU DIV ___| | - * |_____| - */ - hw = clk_hw_register_divider(NULL, "cpu_clk_div", "pll_clk", - CLK_GET_RATE_NOCACHE, LS1X_CLK_PLL_DIV, - DIV_CPU_SHIFT, DIV_CPU_WIDTH, - CLK_DIVIDER_ONE_BASED | - CLK_DIVIDER_ROUND_CLOSEST, &_lock); - clk_hw_register_clkdev(hw, "cpu_clk_div", NULL); - hw = clk_hw_register_mux(NULL, "cpu_clk", cpu_parents, - ARRAY_SIZE(cpu_parents), - CLK_SET_RATE_NO_REPARENT, LS1X_CLK_PLL_DIV, - BYPASS_CPU_SHIFT, BYPASS_CPU_WIDTH, 0, &_lock); - clk_hw_register_clkdev(hw, "cpu_clk", NULL); - - /* _____ - * _______________________| | - * OSC ___/ | MUX |___ DC CLK - * \___ PLL ___ DC DIV ___| | - * |_____| - */ - hw = clk_hw_register_divider(NULL, "dc_clk_div", "pll_clk", - 0, LS1X_CLK_PLL_DIV, DIV_DC_SHIFT, - DIV_DC_WIDTH, CLK_DIVIDER_ONE_BASED, &_lock); - clk_hw_register_clkdev(hw, "dc_clk_div", NULL); - hw = clk_hw_register_mux(NULL, "dc_clk", dc_parents, - ARRAY_SIZE(dc_parents), - CLK_SET_RATE_NO_REPARENT, LS1X_CLK_PLL_DIV, - BYPASS_DC_SHIFT, BYPASS_DC_WIDTH, 0, &_lock); - clk_hw_register_clkdev(hw, "dc_clk", NULL); - - /* _____ - * _______________________| | - * OSC ___/ | MUX |___ DDR CLK - * \___ PLL ___ DDR DIV ___| | - * |_____| - */ - hw = clk_hw_register_divider(NULL, "ahb_clk_div", "pll_clk", - 0, LS1X_CLK_PLL_DIV, DIV_DDR_SHIFT, - DIV_DDR_WIDTH, CLK_DIVIDER_ONE_BASED, - &_lock); - clk_hw_register_clkdev(hw, "ahb_clk_div", NULL); - hw = clk_hw_register_mux(NULL, "ahb_clk", ahb_parents, - ARRAY_SIZE(ahb_parents), - CLK_SET_RATE_NO_REPARENT, LS1X_CLK_PLL_DIV, - BYPASS_DDR_SHIFT, BYPASS_DDR_WIDTH, 0, &_lock); - clk_hw_register_clkdev(hw, "ahb_clk", NULL); - clk_hw_register_clkdev(hw, "ls1x-dma", NULL); - clk_hw_register_clkdev(hw, "stmmaceth", NULL); - - /* clock derived from AHB clk */ - /* APB clk is always half of the AHB clk */ - hw = clk_hw_register_fixed_factor(NULL, "apb_clk", "ahb_clk", 0, 1, - DIV_APB); - clk_hw_register_clkdev(hw, "apb_clk", NULL); - clk_hw_register_clkdev(hw, "ls1x-ac97", NULL); - clk_hw_register_clkdev(hw, "ls1x-i2c", NULL); - clk_hw_register_clkdev(hw, "ls1x-nand", NULL); - clk_hw_register_clkdev(hw, "ls1x-pwmtimer", NULL); - clk_hw_register_clkdev(hw, "ls1x-spi", NULL); - clk_hw_register_clkdev(hw, "ls1x-wdt", NULL); - clk_hw_register_clkdev(hw, "serial8250", NULL); -} |