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Diffstat (limited to 'cpu/arm_cortexa8/s5pc1xx/clock.c')
-rw-r--r--cpu/arm_cortexa8/s5pc1xx/clock.c303
1 files changed, 0 insertions, 303 deletions
diff --git a/cpu/arm_cortexa8/s5pc1xx/clock.c b/cpu/arm_cortexa8/s5pc1xx/clock.c
deleted file mode 100644
index 19619f92cd..0000000000
--- a/cpu/arm_cortexa8/s5pc1xx/clock.c
+++ /dev/null
@@ -1,303 +0,0 @@
-/*
- * Copyright (C) 2009 Samsung Electronics
- * Minkyu Kang <mk7.kang@samsung.com>
- * Heungjun Kim <riverful.kim@samsung.com>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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; either version 2 of
- * the License, or (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/clk.h>
-
-#define CLK_M 0
-#define CLK_D 1
-#define CLK_P 2
-
-#ifndef CONFIG_SYS_CLK_FREQ_C100
-#define CONFIG_SYS_CLK_FREQ_C100 12000000
-#endif
-#ifndef CONFIG_SYS_CLK_FREQ_C110
-#define CONFIG_SYS_CLK_FREQ_C110 24000000
-#endif
-
-unsigned long (*get_pclk)(void);
-unsigned long (*get_arm_clk)(void);
-unsigned long (*get_pll_clk)(int);
-
-/* s5pc110: return pll clock frequency */
-static unsigned long s5pc100_get_pll_clk(int pllreg)
-{
- struct s5pc100_clock *clk = (struct s5pc100_clock *)S5PC1XX_CLOCK_BASE;
- unsigned long r, m, p, s, mask, fout;
- unsigned int freq;
-
- switch (pllreg) {
- case APLL:
- r = readl(&clk->apll_con);
- break;
- case MPLL:
- r = readl(&clk->mpll_con);
- break;
- case EPLL:
- r = readl(&clk->epll_con);
- break;
- case HPLL:
- r = readl(&clk->hpll_con);
- break;
- default:
- printf("Unsupported PLL (%d)\n", pllreg);
- return 0;
- }
-
- /*
- * APLL_CON: MIDV [25:16]
- * MPLL_CON: MIDV [23:16]
- * EPLL_CON: MIDV [23:16]
- * HPLL_CON: MIDV [23:16]
- */
- if (pllreg == APLL)
- mask = 0x3ff;
- else
- mask = 0x0ff;
-
- m = (r >> 16) & mask;
-
- /* PDIV [13:8] */
- p = (r >> 8) & 0x3f;
- /* SDIV [2:0] */
- s = r & 0x7;
-
- /* FOUT = MDIV * FIN / (PDIV * 2^SDIV) */
- freq = CONFIG_SYS_CLK_FREQ_C100;
- fout = m * (freq / (p * (1 << s)));
-
- return fout;
-}
-
-/* s5pc100: return pll clock frequency */
-static unsigned long s5pc110_get_pll_clk(int pllreg)
-{
- struct s5pc110_clock *clk = (struct s5pc110_clock *)S5PC1XX_CLOCK_BASE;
- unsigned long r, m, p, s, mask, fout;
- unsigned int freq;
-
- switch (pllreg) {
- case APLL:
- r = readl(&clk->apll_con);
- break;
- case MPLL:
- r = readl(&clk->mpll_con);
- break;
- case EPLL:
- r = readl(&clk->epll_con);
- break;
- case VPLL:
- r = readl(&clk->vpll_con);
- break;
- default:
- printf("Unsupported PLL (%d)\n", pllreg);
- return 0;
- }
-
- /*
- * APLL_CON: MIDV [25:16]
- * MPLL_CON: MIDV [25:16]
- * EPLL_CON: MIDV [24:16]
- * VPLL_CON: MIDV [24:16]
- */
- if (pllreg == APLL || pllreg == MPLL)
- mask = 0x3ff;
- else
- mask = 0x1ff;
-
- m = (r >> 16) & mask;
-
- /* PDIV [13:8] */
- p = (r >> 8) & 0x3f;
- /* SDIV [2:0] */
- s = r & 0x7;
-
- freq = CONFIG_SYS_CLK_FREQ_C110;
- if (pllreg == APLL) {
- if (s < 1)
- s = 1;
- /* FOUT = MDIV * FIN / (PDIV * 2^(SDIV - 1)) */
- fout = m * (freq / (p * (1 << (s - 1))));
- } else
- /* FOUT = MDIV * FIN / (PDIV * 2^SDIV) */
- fout = m * (freq / (p * (1 << s)));
-
- return fout;
-}
-
-/* s5pc110: return ARM clock frequency */
-static unsigned long s5pc110_get_arm_clk(void)
-{
- struct s5pc110_clock *clk = (struct s5pc110_clock *)S5PC1XX_CLOCK_BASE;
- unsigned long div;
- unsigned long dout_apll, armclk;
- unsigned int apll_ratio;
-
- div = readl(&clk->div0);
-
- /* APLL_RATIO: [2:0] */
- apll_ratio = div & 0x7;
-
- dout_apll = get_pll_clk(APLL) / (apll_ratio + 1);
- armclk = dout_apll;
-
- return armclk;
-}
-
-/* s5pc100: return ARM clock frequency */
-static unsigned long s5pc100_get_arm_clk(void)
-{
- struct s5pc100_clock *clk = (struct s5pc100_clock *)S5PC1XX_CLOCK_BASE;
- unsigned long div;
- unsigned long dout_apll, armclk;
- unsigned int apll_ratio, arm_ratio;
-
- div = readl(&clk->div0);
-
- /* ARM_RATIO: [6:4] */
- arm_ratio = (div >> 4) & 0x7;
- /* APLL_RATIO: [0] */
- apll_ratio = div & 0x1;
-
- dout_apll = get_pll_clk(APLL) / (apll_ratio + 1);
- armclk = dout_apll / (arm_ratio + 1);
-
- return armclk;
-}
-
-/* s5pc100: return HCLKD0 frequency */
-static unsigned long get_hclk(void)
-{
- struct s5pc100_clock *clk = (struct s5pc100_clock *)S5PC1XX_CLOCK_BASE;
- unsigned long hclkd0;
- uint div, d0_bus_ratio;
-
- div = readl(&clk->div0);
- /* D0_BUS_RATIO: [10:8] */
- d0_bus_ratio = (div >> 8) & 0x7;
-
- hclkd0 = get_arm_clk() / (d0_bus_ratio + 1);
-
- return hclkd0;
-}
-
-/* s5pc100: return PCLKD1 frequency */
-static unsigned long get_pclkd1(void)
-{
- struct s5pc100_clock *clk = (struct s5pc100_clock *)S5PC1XX_CLOCK_BASE;
- unsigned long d1_bus, pclkd1;
- uint div, d1_bus_ratio, pclkd1_ratio;
-
- div = readl(&clk->div0);
- /* D1_BUS_RATIO: [14:12] */
- d1_bus_ratio = (div >> 12) & 0x7;
- /* PCLKD1_RATIO: [18:16] */
- pclkd1_ratio = (div >> 16) & 0x7;
-
- /* ASYNC Mode */
- d1_bus = get_pll_clk(MPLL) / (d1_bus_ratio + 1);
- pclkd1 = d1_bus / (pclkd1_ratio + 1);
-
- return pclkd1;
-}
-
-/* s5pc110: return HCLKs frequency */
-static unsigned long get_hclk_sys(int dom)
-{
- struct s5pc110_clock *clk = (struct s5pc110_clock *)S5PC1XX_CLOCK_BASE;
- unsigned long hclk;
- unsigned int div;
- unsigned int offset;
- unsigned int hclk_sys_ratio;
-
- if (dom == CLK_M)
- return get_hclk();
-
- div = readl(&clk->div0);
-
- /*
- * HCLK_MSYS_RATIO: [10:8]
- * HCLK_DSYS_RATIO: [19:16]
- * HCLK_PSYS_RATIO: [27:24]
- */
- offset = 8 + (dom << 0x3);
-
- hclk_sys_ratio = (div >> offset) & 0xf;
-
- hclk = get_pll_clk(MPLL) / (hclk_sys_ratio + 1);
-
- return hclk;
-}
-
-/* s5pc110: return PCLKs frequency */
-static unsigned long get_pclk_sys(int dom)
-{
- struct s5pc110_clock *clk = (struct s5pc110_clock *)S5PC1XX_CLOCK_BASE;
- unsigned long pclk;
- unsigned int div;
- unsigned int offset;
- unsigned int pclk_sys_ratio;
-
- div = readl(&clk->div0);
-
- /*
- * PCLK_MSYS_RATIO: [14:12]
- * PCLK_DSYS_RATIO: [22:20]
- * PCLK_PSYS_RATIO: [30:28]
- */
- offset = 12 + (dom << 0x3);
-
- pclk_sys_ratio = (div >> offset) & 0x7;
-
- pclk = get_hclk_sys(dom) / (pclk_sys_ratio + 1);
-
- return pclk;
-}
-
-/* s5pc110: return peripheral clock frequency */
-static unsigned long s5pc110_get_pclk(void)
-{
- return get_pclk_sys(CLK_P);
-}
-
-/* s5pc100: return peripheral clock frequency */
-static unsigned long s5pc100_get_pclk(void)
-{
- return get_pclkd1();
-}
-
-void s5pc1xx_clock_init(void)
-{
- if (cpu_is_s5pc110()) {
- get_pll_clk = s5pc110_get_pll_clk;
- get_arm_clk = s5pc110_get_arm_clk;
- get_pclk = s5pc110_get_pclk;
- } else {
- get_pll_clk = s5pc100_get_pll_clk;
- get_arm_clk = s5pc100_get_arm_clk;
- get_pclk = s5pc100_get_pclk;
- }
-}
generated by cgit (git 2.34.1) at 2024-12-29 10:31:24 +0000