* Copyright (C) 2010 Samsung Electronics
* Minkyu Kang <mk7.kang@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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#define PLL_DIV_1024 1024
#define PLL_DIV_65535 65535
#define PLL_DIV_65536 65536
-
/* *
* This structure is to store the src bit, div bit and prediv bit
* positions of the peripheral clocks of the src and div registers
*/
struct clk_bit_info {
+ enum periph_id id;
+ int32_t src_mask;
+ int32_t div_mask;
+ int32_t prediv_mask;
int8_t src_bit;
int8_t div_bit;
int8_t prediv_bit;
};
-/* src_bit div_bit prediv_bit */
-static struct clk_bit_info clk_bit_info[PERIPH_ID_COUNT] = {
- {0, 0, -1},
- {4, 4, -1},
- {8, 8, -1},
- {12, 12, -1},
- {0, 0, 8},
- {4, 16, 24},
- {8, 0, 8},
- {12, 16, 24},
- {-1, -1, -1},
- {16, 0, 8},
- {20, 16, 24},
- {24, 0, 8},
- {0, 0, 4},
- {4, 12, 16},
- {-1, -1, -1},
- {-1, -1, -1},
- {-1, 24, 0},
- {-1, 24, 0},
- {-1, 24, 0},
- {-1, 24, 0},
- {-1, 24, 0},
- {-1, 24, 0},
- {-1, 24, 0},
- {-1, 24, 0},
- {24, 0, -1},
- {24, 0, -1},
- {24, 0, -1},
- {24, 0, -1},
- {24, 0, -1},
+static struct clk_bit_info exynos5_bit_info[] = {
+ /* periph id s_mask d_mask p_mask s_bit d_bit p_bit */
+ {PERIPH_ID_UART0, 0xf, 0xf, -1, 0, 0, -1},
+ {PERIPH_ID_UART1, 0xf, 0xf, -1, 4, 4, -1},
+ {PERIPH_ID_UART2, 0xf, 0xf, -1, 8, 8, -1},
+ {PERIPH_ID_UART3, 0xf, 0xf, -1, 12, 12, -1},
+ {PERIPH_ID_I2C0, -1, 0x7, 0x7, -1, 24, 0},
+ {PERIPH_ID_I2C1, -1, 0x7, 0x7, -1, 24, 0},
+ {PERIPH_ID_I2C2, -1, 0x7, 0x7, -1, 24, 0},
+ {PERIPH_ID_I2C3, -1, 0x7, 0x7, -1, 24, 0},
+ {PERIPH_ID_I2C4, -1, 0x7, 0x7, -1, 24, 0},
+ {PERIPH_ID_I2C5, -1, 0x7, 0x7, -1, 24, 0},
+ {PERIPH_ID_I2C6, -1, 0x7, 0x7, -1, 24, 0},
+ {PERIPH_ID_I2C7, -1, 0x7, 0x7, -1, 24, 0},
+ {PERIPH_ID_SPI0, 0xf, 0xf, 0xff, 16, 0, 8},
+ {PERIPH_ID_SPI1, 0xf, 0xf, 0xff, 20, 16, 24},
+ {PERIPH_ID_SPI2, 0xf, 0xf, 0xff, 24, 0, 8},
+ {PERIPH_ID_SDMMC0, 0xf, 0xf, 0xff, 0, 0, 8},
+ {PERIPH_ID_SDMMC1, 0xf, 0xf, 0xff, 4, 16, 24},
+ {PERIPH_ID_SDMMC2, 0xf, 0xf, 0xff, 8, 0, 8},
+ {PERIPH_ID_SDMMC3, 0xf, 0xf, 0xff, 12, 16, 24},
+ {PERIPH_ID_I2S0, 0xf, 0xf, 0xff, 0, 0, 4},
+ {PERIPH_ID_I2S1, 0xf, 0xf, 0xff, 4, 12, 16},
+ {PERIPH_ID_SPI3, 0xf, 0xf, 0xff, 0, 0, 4},
+ {PERIPH_ID_SPI4, 0xf, 0xf, 0xff, 4, 12, 16},
+ {PERIPH_ID_SDMMC4, 0xf, 0xf, 0xff, 16, 0, 8},
+ {PERIPH_ID_PWM0, 0xf, 0xf, -1, 24, 0, -1},
+ {PERIPH_ID_PWM1, 0xf, 0xf, -1, 24, 0, -1},
+ {PERIPH_ID_PWM2, 0xf, 0xf, -1, 24, 0, -1},
+ {PERIPH_ID_PWM3, 0xf, 0xf, -1, 24, 0, -1},
+ {PERIPH_ID_PWM4, 0xf, 0xf, -1, 24, 0, -1},
+
+ {PERIPH_ID_NONE, -1, -1, -1, -1, -1, -1},
+};
+
+static struct clk_bit_info exynos542x_bit_info[] = {
+ /* periph id s_mask d_mask p_mask s_bit d_bit p_bit */
+ {PERIPH_ID_UART0, 0xf, 0xf, -1, 4, 8, -1},
+ {PERIPH_ID_UART1, 0xf, 0xf, -1, 8, 12, -1},
+ {PERIPH_ID_UART2, 0xf, 0xf, -1, 12, 16, -1},
+ {PERIPH_ID_UART3, 0xf, 0xf, -1, 16, 20, -1},
+ {PERIPH_ID_I2C0, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_I2C1, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_I2C2, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_I2C3, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_I2C4, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_I2C5, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_I2C6, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_I2C7, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_SPI0, 0xf, 0xf, 0xff, 20, 20, 8},
+ {PERIPH_ID_SPI1, 0xf, 0xf, 0xff, 24, 24, 16},
+ {PERIPH_ID_SPI2, 0xf, 0xf, 0xff, 28, 28, 24},
+ {PERIPH_ID_SDMMC0, 0x7, 0x3ff, -1, 8, 0, -1},
+ {PERIPH_ID_SDMMC1, 0x7, 0x3ff, -1, 12, 10, -1},
+ {PERIPH_ID_SDMMC2, 0x7, 0x3ff, -1, 16, 20, -1},
+ {PERIPH_ID_I2C8, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_I2C9, -1, 0x3f, -1, -1, 8, -1},
+ {PERIPH_ID_I2S0, 0xf, 0xf, 0xff, 0, 0, 4},
+ {PERIPH_ID_I2S1, 0xf, 0xf, 0xff, 4, 12, 16},
+ {PERIPH_ID_SPI3, 0xf, 0xf, 0xff, 12, 16, 0},
+ {PERIPH_ID_SPI4, 0xf, 0xf, 0xff, 16, 20, 8},
+ {PERIPH_ID_PWM0, 0xf, 0xf, -1, 24, 28, -1},
+ {PERIPH_ID_PWM1, 0xf, 0xf, -1, 24, 28, -1},
+ {PERIPH_ID_PWM2, 0xf, 0xf, -1, 24, 28, -1},
+ {PERIPH_ID_PWM3, 0xf, 0xf, -1, 24, 28, -1},
+ {PERIPH_ID_PWM4, 0xf, 0xf, -1, 24, 28, -1},
+ {PERIPH_ID_I2C10, -1, 0x3f, -1, -1, 8, -1},
+
+ {PERIPH_ID_NONE, -1, -1, -1, -1, -1, -1},
};
/* Epll Clock division values to achive different frequency output */
* VPLL_CON: MIDV [24:16]
* BPLL_CON: MIDV [25:16]: Exynos5
*/
- if (pllreg == APLL || pllreg == MPLL || pllreg == BPLL)
+ if (pllreg == APLL || pllreg == MPLL || pllreg == BPLL ||
+ pllreg == SPLL)
mask = 0x3ff;
else
mask = 0x1ff;
freq = CONFIG_SYS_CLK_FREQ;
- if (pllreg == EPLL) {
+ if (pllreg == EPLL || pllreg == RPLL) {
k = k & 0xffff;
/* FOUT = (MDIV + K / 65536) * FIN / (PDIV * 2^SDIV) */
fout = (m + k / PLL_DIV_65536) * (freq / (p * (1 << s)));
div = PLL_DIV_1024;
else if (proid_is_exynos4412())
div = PLL_DIV_65535;
- else if (proid_is_exynos5250())
+ else if (proid_is_exynos5250() || proid_is_exynos5420()
+ || proid_is_exynos5800())
div = PLL_DIV_65536;
else
return 0;
fout = (m + k / div) * (freq / (p * (1 << s)));
} else {
/*
- * Exynos4210
+ * Exynos4412 / Exynos5250
* FOUT = MDIV * FIN / (PDIV * 2^SDIV)
*
- * Exynos4412 / Exynos5250
+ * Exynos4210
* FOUT = MDIV * FIN / (PDIV * 2^(SDIV-1))
*/
if (proid_is_exynos4210())
- fout = m * (freq / (p * (1 << s)));
- else
fout = m * (freq / (p * (1 << (s - 1))));
+ else
+ fout = m * (freq / (p * (1 << s)));
}
-
return fout;
}
return fout;
}
+/* exynos542x: return pll clock frequency */
+static unsigned long exynos542x_get_pll_clk(int pllreg)
+{
+ struct exynos5420_clock *clk =
+ (struct exynos5420_clock *)samsung_get_base_clock();
+ unsigned long r, k = 0;
+
+ switch (pllreg) {
+ case APLL:
+ r = readl(&clk->apll_con0);
+ break;
+ case MPLL:
+ r = readl(&clk->mpll_con0);
+ break;
+ case EPLL:
+ r = readl(&clk->epll_con0);
+ k = readl(&clk->epll_con1);
+ break;
+ case VPLL:
+ r = readl(&clk->vpll_con0);
+ k = readl(&clk->vpll_con1);
+ break;
+ case BPLL:
+ r = readl(&clk->bpll_con0);
+ break;
+ case RPLL:
+ r = readl(&clk->rpll_con0);
+ k = readl(&clk->rpll_con1);
+ break;
+ case SPLL:
+ r = readl(&clk->spll_con0);
+ break;
+ default:
+ printf("Unsupported PLL (%d)\n", pllreg);
+ return 0;
+ }
+
+ return exynos_get_pll_clk(pllreg, r, k);
+}
+
+static struct clk_bit_info *get_clk_bit_info(int peripheral)
+{
+ int i;
+ struct clk_bit_info *info;
+
+ if (proid_is_exynos5420() || proid_is_exynos5800())
+ info = exynos542x_bit_info;
+ else
+ info = exynos5_bit_info;
+
+ for (i = 0; info[i].id != PERIPH_ID_NONE; i++) {
+ if (info[i].id == peripheral)
+ break;
+ }
+
+ if (info[i].id == PERIPH_ID_NONE)
+ debug("ERROR: Peripheral ID %d not found\n", peripheral);
+
+ return &info[i];
+}
+
static unsigned long exynos5_get_periph_rate(int peripheral)
{
- struct clk_bit_info *bit_info = &clk_bit_info[peripheral];
- unsigned long sclk, sub_clk;
- unsigned int src, div, sub_div;
+ struct clk_bit_info *bit_info = get_clk_bit_info(peripheral);
+ unsigned long sclk = 0;
+ unsigned int src = 0, div = 0, sub_div = 0;
struct exynos5_clock *clk =
(struct exynos5_clock *)samsung_get_base_clock();
src = readl(&clk->src_peric0);
div = readl(&clk->div_peric3);
break;
+ case PERIPH_ID_I2S0:
+ src = readl(&clk->src_mau);
+ div = sub_div = readl(&clk->div_mau);
case PERIPH_ID_SPI0:
case PERIPH_ID_SPI1:
src = readl(&clk->src_peric1);
- div = readl(&clk->div_peric1);
+ div = sub_div = readl(&clk->div_peric1);
break;
case PERIPH_ID_SPI2:
src = readl(&clk->src_peric1);
- div = readl(&clk->div_peric2);
+ div = sub_div = readl(&clk->div_peric2);
break;
case PERIPH_ID_SPI3:
case PERIPH_ID_SPI4:
src = readl(&clk->sclk_src_isp);
- div = readl(&clk->sclk_div_isp);
+ div = sub_div = readl(&clk->sclk_div_isp);
break;
case PERIPH_ID_SDMMC0:
case PERIPH_ID_SDMMC1:
+ src = readl(&clk->src_fsys);
+ div = sub_div = readl(&clk->div_fsys1);
+ break;
case PERIPH_ID_SDMMC2:
case PERIPH_ID_SDMMC3:
src = readl(&clk->src_fsys);
- div = readl(&clk->div_fsys1);
+ div = sub_div = readl(&clk->div_fsys2);
break;
case PERIPH_ID_I2C0:
case PERIPH_ID_I2C1:
case PERIPH_ID_I2C5:
case PERIPH_ID_I2C6:
case PERIPH_ID_I2C7:
- sclk = exynos5_get_pll_clk(MPLL);
- sub_div = ((readl(&clk->div_top1) >> bit_info->div_bit)
- & 0x7) + 1;
- div = ((readl(&clk->div_top0) >> bit_info->prediv_bit)
- & 0x7) + 1;
- return (sclk / sub_div) / div;
+ src = EXYNOS_SRC_MPLL;
+ div = readl(&clk->div_top1);
+ sub_div = readl(&clk->div_top0);
+ break;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
};
- src = (src >> bit_info->src_bit) & 0xf;
+ if (bit_info->src_bit >= 0)
+ src = (src >> bit_info->src_bit) & bit_info->src_mask;
switch (src) {
case EXYNOS_SRC_MPLL:
sclk = exynos5_get_pll_clk(VPLL);
break;
default:
+ debug("%s: EXYNOS_SRC %d not supported\n", __func__, src);
return 0;
}
- /* Ratio clock division for this peripheral */
- sub_div = (div >> bit_info->div_bit) & 0xf;
- sub_clk = sclk / (sub_div + 1);
+ /* Clock divider ratio for this peripheral */
+ if (bit_info->div_bit >= 0)
+ div = (div >> bit_info->div_bit) & bit_info->div_mask;
+
+ /* Clock pre-divider ratio for this peripheral */
+ if (bit_info->prediv_bit >= 0)
+ sub_div = (sub_div >> bit_info->prediv_bit)
+ & bit_info->prediv_mask;
+
+ /* Calculate and return required clock rate */
+ return (sclk / (div + 1)) / (sub_div + 1);
+}
+
+static unsigned long exynos542x_get_periph_rate(int peripheral)
+{
+ struct clk_bit_info *bit_info = get_clk_bit_info(peripheral);
+ unsigned long sclk = 0;
+ unsigned int src = 0, div = 0, sub_div = 0;
+ struct exynos5420_clock *clk =
+ (struct exynos5420_clock *)samsung_get_base_clock();
+
+ switch (peripheral) {
+ case PERIPH_ID_UART0:
+ case PERIPH_ID_UART1:
+ case PERIPH_ID_UART2:
+ case PERIPH_ID_UART3:
+ case PERIPH_ID_PWM0:
+ case PERIPH_ID_PWM1:
+ case PERIPH_ID_PWM2:
+ case PERIPH_ID_PWM3:
+ case PERIPH_ID_PWM4:
+ src = readl(&clk->src_peric0);
+ div = readl(&clk->div_peric0);
+ break;
+ case PERIPH_ID_SPI0:
+ case PERIPH_ID_SPI1:
+ case PERIPH_ID_SPI2:
+ src = readl(&clk->src_peric1);
+ div = readl(&clk->div_peric1);
+ sub_div = readl(&clk->div_peric4);
+ break;
+ case PERIPH_ID_SPI3:
+ case PERIPH_ID_SPI4:
+ src = readl(&clk->src_isp);
+ div = readl(&clk->div_isp1);
+ sub_div = readl(&clk->div_isp1);
+ break;
+ case PERIPH_ID_SDMMC0:
+ case PERIPH_ID_SDMMC1:
+ case PERIPH_ID_SDMMC2:
+ case PERIPH_ID_SDMMC3:
+ src = readl(&clk->src_fsys);
+ div = readl(&clk->div_fsys1);
+ break;
+ case PERIPH_ID_I2C0:
+ case PERIPH_ID_I2C1:
+ case PERIPH_ID_I2C2:
+ case PERIPH_ID_I2C3:
+ case PERIPH_ID_I2C4:
+ case PERIPH_ID_I2C5:
+ case PERIPH_ID_I2C6:
+ case PERIPH_ID_I2C7:
+ case PERIPH_ID_I2C8:
+ case PERIPH_ID_I2C9:
+ case PERIPH_ID_I2C10:
+ src = EXYNOS542X_SRC_MPLL;
+ div = readl(&clk->div_top1);
+ break;
+ default:
+ debug("%s: invalid peripheral %d", __func__, peripheral);
+ return -1;
+ };
+
+ if (bit_info->src_bit >= 0)
+ src = (src >> bit_info->src_bit) & bit_info->src_mask;
- /* Pre-ratio clock division for SDMMC0 and 2 */
- if (peripheral == PERIPH_ID_SDMMC0 || peripheral == PERIPH_ID_SDMMC2) {
- div = (div >> bit_info->prediv_bit) & 0xff;
- return sub_clk / (div + 1);
+ switch (src) {
+ case EXYNOS542X_SRC_MPLL:
+ sclk = exynos542x_get_pll_clk(MPLL);
+ break;
+ case EXYNOS542X_SRC_SPLL:
+ sclk = exynos542x_get_pll_clk(SPLL);
+ break;
+ case EXYNOS542X_SRC_EPLL:
+ sclk = exynos542x_get_pll_clk(EPLL);
+ break;
+ case EXYNOS542X_SRC_RPLL:
+ sclk = exynos542x_get_pll_clk(RPLL);
+ break;
+ default:
+ debug("%s: EXYNOS542X_SRC %d not supported", __func__, src);
+ return 0;
}
- return sub_clk;
+ /* Clock divider ratio for this peripheral */
+ if (bit_info->div_bit >= 0)
+ div = (div >> bit_info->div_bit) & bit_info->div_mask;
+
+ /* Clock pre-divider ratio for this peripheral */
+ if (bit_info->prediv_bit >= 0)
+ sub_div = (sub_div >> bit_info->prediv_bit)
+ & bit_info->prediv_mask;
+
+ /* Calculate and return required clock rate */
+ return (sclk / (div + 1)) / (sub_div + 1);
}
unsigned long clock_get_periph_rate(int peripheral)
{
- if (cpu_is_exynos5())
+ if (cpu_is_exynos5()) {
+ if (proid_is_exynos5420() || proid_is_exynos5800())
+ return exynos542x_get_periph_rate(peripheral);
return exynos5_get_periph_rate(peripheral);
- else
+ } else {
return 0;
+ }
}
/* exynos4: return ARM clock frequency */
return uclk;
}
-/* exynos5: return uart clock frequency */
-static unsigned long exynos5_get_uart_clk(int dev_index)
-{
- struct exynos5_clock *clk =
- (struct exynos5_clock *)samsung_get_base_clock();
- unsigned long uclk, sclk;
- unsigned int sel;
- unsigned int ratio;
-
- /*
- * CLK_SRC_PERIC0
- * UART0_SEL [3:0]
- * UART1_SEL [7:4]
- * UART2_SEL [8:11]
- * UART3_SEL [12:15]
- * UART4_SEL [16:19]
- * UART5_SEL [23:20]
- */
- sel = readl(&clk->src_peric0);
- sel = (sel >> (dev_index << 2)) & 0xf;
-
- if (sel == 0x6)
- sclk = get_pll_clk(MPLL);
- else if (sel == 0x7)
- sclk = get_pll_clk(EPLL);
- else if (sel == 0x8)
- sclk = get_pll_clk(VPLL);
- else
- return 0;
-
- /*
- * CLK_DIV_PERIC0
- * UART0_RATIO [3:0]
- * UART1_RATIO [7:4]
- * UART2_RATIO [8:11]
- * UART3_RATIO [12:15]
- * UART4_RATIO [16:19]
- * UART5_RATIO [23:20]
- */
- ratio = readl(&clk->div_peric0);
- ratio = (ratio >> (dev_index << 2)) & 0xf;
-
- uclk = sclk / (ratio + 1);
-
- return uclk;
-}
-
static unsigned long exynos4_get_mmc_clk(int dev_index)
{
struct exynos4_clock *clk =
return uclk;
}
-static unsigned long exynos5_get_mmc_clk(int dev_index)
-{
- struct exynos5_clock *clk =
- (struct exynos5_clock *)samsung_get_base_clock();
- unsigned long uclk, sclk;
- unsigned int sel, ratio, pre_ratio;
- int shift = 0;
-
- sel = readl(&clk->src_fsys);
- sel = (sel >> (dev_index << 2)) & 0xf;
-
- if (sel == 0x6)
- sclk = get_pll_clk(MPLL);
- else if (sel == 0x7)
- sclk = get_pll_clk(EPLL);
- else if (sel == 0x8)
- sclk = get_pll_clk(VPLL);
- else
- return 0;
-
- switch (dev_index) {
- case 0:
- case 1:
- ratio = readl(&clk->div_fsys1);
- pre_ratio = readl(&clk->div_fsys1);
- break;
- case 2:
- case 3:
- ratio = readl(&clk->div_fsys2);
- pre_ratio = readl(&clk->div_fsys2);
- break;
- default:
- return 0;
- }
-
- if (dev_index == 1 || dev_index == 3)
- shift = 16;
-
- ratio = (ratio >> shift) & 0xf;
- pre_ratio = (pre_ratio >> (shift + 8)) & 0xff;
- uclk = (sclk / (ratio + 1)) / (pre_ratio + 1);
-
- return uclk;
-}
-
/* exynos4: set the mmc clock */
static void exynos4_set_mmc_clk(int dev_index, unsigned int div)
{
struct exynos4_clock *clk =
(struct exynos4_clock *)samsung_get_base_clock();
- unsigned int addr;
- unsigned int val;
+ unsigned int addr, clear_bit, set_bit;
/*
* CLK_DIV_FSYS1
* CLK_DIV_FSYS2
* MMC2_PRE_RATIO [15:8], MMC3_PRE_RATIO [31:24]
* CLK_DIV_FSYS3
- * MMC4_PRE_RATIO [15:8]
+ * MMC4_RATIO [3:0]
*/
if (dev_index < 2) {
addr = (unsigned int)&clk->div_fsys1;
- } else if (dev_index == 4) {
+ clear_bit = MASK_PRE_RATIO(dev_index);
+ set_bit = SET_PRE_RATIO(dev_index, div);
+ } else if (dev_index == 4) {
addr = (unsigned int)&clk->div_fsys3;
dev_index -= 4;
+ /* MMC4 is controlled with the MMC4_RATIO value */
+ clear_bit = MASK_RATIO(dev_index);
+ set_bit = SET_RATIO(dev_index, div);
} else {
addr = (unsigned int)&clk->div_fsys2;
dev_index -= 2;
+ clear_bit = MASK_PRE_RATIO(dev_index);
+ set_bit = SET_PRE_RATIO(dev_index, div);
}
- val = readl(addr);
- val &= ~(0xff << ((dev_index << 4) + 8));
- val |= (div & 0xff) << ((dev_index << 4) + 8);
- writel(val, addr);
+ clrsetbits_le32(addr, clear_bit, set_bit);
}
-/* exynos4x12: set the mmc clock */
-static void exynos4x12_set_mmc_clk(int dev_index, unsigned int div)
+/* exynos5: set the mmc clock */
+static void exynos5_set_mmc_clk(int dev_index, unsigned int div)
{
- struct exynos4x12_clock *clk =
- (struct exynos4x12_clock *)samsung_get_base_clock();
+ struct exynos5_clock *clk =
+ (struct exynos5_clock *)samsung_get_base_clock();
unsigned int addr;
- unsigned int val;
/*
* CLK_DIV_FSYS1
dev_index -= 2;
}
- val = readl(addr);
- val &= ~(0xff << ((dev_index << 4) + 8));
- val |= (div & 0xff) << ((dev_index << 4) + 8);
- writel(val, addr);
+ clrsetbits_le32(addr, 0xff << ((dev_index << 4) + 8),
+ (div & 0xff) << ((dev_index << 4) + 8));
}
/* exynos5: set the mmc clock */
-static void exynos5_set_mmc_clk(int dev_index, unsigned int div)
+static void exynos5420_set_mmc_clk(int dev_index, unsigned int div)
{
- struct exynos5_clock *clk =
- (struct exynos5_clock *)samsung_get_base_clock();
+ struct exynos5420_clock *clk =
+ (struct exynos5420_clock *)samsung_get_base_clock();
unsigned int addr;
- unsigned int val;
+ unsigned int shift;
/*
* CLK_DIV_FSYS1
- * MMC0_PRE_RATIO [15:8], MMC1_PRE_RATIO [31:24]
- * CLK_DIV_FSYS2
- * MMC2_PRE_RATIO [15:8], MMC3_PRE_RATIO [31:24]
+ * MMC0_RATIO [9:0]
+ * MMC1_RATIO [19:10]
+ * MMC2_RATIO [29:20]
*/
- if (dev_index < 2) {
- addr = (unsigned int)&clk->div_fsys1;
- } else {
- addr = (unsigned int)&clk->div_fsys2;
- dev_index -= 2;
- }
+ addr = (unsigned int)&clk->div_fsys1;
+ shift = dev_index * 10;
- val = readl(addr);
- val &= ~(0xff << ((dev_index << 4) + 8));
- val |= (div & 0xff) << ((dev_index << 4) + 8);
- writel(val, addr);
+ clrsetbits_le32(addr, 0x3ff << shift, (div & 0x3ff) << shift);
}
/* get_lcd_clk: return lcd clock frequency */
return pclk;
}
+static unsigned long exynos5420_get_lcd_clk(void)
+{
+ struct exynos5420_clock *clk =
+ (struct exynos5420_clock *)samsung_get_base_clock();
+ unsigned long pclk, sclk;
+ unsigned int sel;
+ unsigned int ratio;
+
+ /*
+ * CLK_SRC_DISP10
+ * FIMD1_SEL [4]
+ * 0: SCLK_RPLL
+ * 1: SCLK_SPLL
+ */
+ sel = readl(&clk->src_disp10);
+ sel &= (1 << 4);
+
+ if (sel)
+ sclk = get_pll_clk(SPLL);
+ else
+ sclk = get_pll_clk(RPLL);
+
+ /*
+ * CLK_DIV_DISP10
+ * FIMD1_RATIO [3:0]
+ */
+ ratio = readl(&clk->div_disp10);
+ ratio = ratio & 0xf;
+
+ pclk = sclk / (ratio + 1);
+
+ return pclk;
+}
+
+static unsigned long exynos5800_get_lcd_clk(void)
+{
+ struct exynos5420_clock *clk =
+ (struct exynos5420_clock *)samsung_get_base_clock();
+ unsigned long sclk;
+ unsigned int sel;
+ unsigned int ratio;
+
+ /*
+ * CLK_SRC_DISP10
+ * CLKMUX_FIMD1 [6:4]
+ */
+ sel = (readl(&clk->src_disp10) >> 4) & 0x7;
+
+ if (sel) {
+ /*
+ * Mapping of CLK_SRC_DISP10 CLKMUX_FIMD1 [6:4] values into
+ * PLLs. The first element is a placeholder to bypass the
+ * default settig.
+ */
+ const int reg_map[] = {0, CPLL, DPLL, MPLL, SPLL, IPLL, EPLL,
+ RPLL};
+ sclk = get_pll_clk(reg_map[sel]);
+ } else
+ sclk = CONFIG_SYS_CLK_FREQ;
+ /*
+ * CLK_DIV_DISP10
+ * FIMD1_RATIO [3:0]
+ */
+ ratio = readl(&clk->div_disp10) & 0xf;
+
+ return sclk / (ratio + 1);
+}
+
void exynos4_set_lcd_clk(void)
{
struct exynos4_clock *clk =
(struct exynos4_clock *)samsung_get_base_clock();
- unsigned int cfg = 0;
/*
* CLK_GATE_BLOCK
* CLK_LCD1 [5]
* CLK_GPS [7]
*/
- cfg = readl(&clk->gate_block);
- cfg |= 1 << 4;
- writel(cfg, &clk->gate_block);
+ setbits_le32(&clk->gate_block, 1 << 4);
/*
* CLK_SRC_LCD0
* MIPI0_SEL [12:15]
* set lcd0 src clock 0x6: SCLK_MPLL
*/
- cfg = readl(&clk->src_lcd0);
- cfg &= ~(0xf);
- cfg |= 0x6;
- writel(cfg, &clk->src_lcd0);
+ clrsetbits_le32(&clk->src_lcd0, 0xf, 0x6);
/*
* CLK_GATE_IP_LCD0
* CLK_PPMULCD0 [5]
* Gating all clocks for FIMD0
*/
- cfg = readl(&clk->gate_ip_lcd0);
- cfg |= 1 << 0;
- writel(cfg, &clk->gate_ip_lcd0);
+ setbits_le32(&clk->gate_ip_lcd0, 1 << 0);
/*
* CLK_DIV_LCD0
* MIPI0_PRE_RATIO [23:20]
* set fimd ratio
*/
- cfg &= ~(0xf);
- cfg |= 0x1;
- writel(cfg, &clk->div_lcd0);
+ clrsetbits_le32(&clk->div_lcd0, 0xf, 0x1);
}
void exynos5_set_lcd_clk(void)
{
struct exynos5_clock *clk =
(struct exynos5_clock *)samsung_get_base_clock();
- unsigned int cfg = 0;
/*
* CLK_GATE_BLOCK
* CLK_LCD1 [5]
* CLK_GPS [7]
*/
- cfg = readl(&clk->gate_block);
- cfg |= 1 << 4;
- writel(cfg, &clk->gate_block);
+ setbits_le32(&clk->gate_block, 1 << 4);
/*
* CLK_SRC_LCD0
* MIPI0_SEL [12:15]
* set lcd0 src clock 0x6: SCLK_MPLL
*/
- cfg = readl(&clk->src_disp1_0);
- cfg &= ~(0xf);
- cfg |= 0x6;
- writel(cfg, &clk->src_disp1_0);
+ clrsetbits_le32(&clk->src_disp1_0, 0xf, 0x6);
/*
* CLK_GATE_IP_LCD0
* CLK_PPMULCD0 [5]
* Gating all clocks for FIMD0
*/
- cfg = readl(&clk->gate_ip_disp1);
- cfg |= 1 << 0;
- writel(cfg, &clk->gate_ip_disp1);
+ setbits_le32(&clk->gate_ip_disp1, 1 << 0);
/*
* CLK_DIV_LCD0
* MIPI0_PRE_RATIO [23:20]
* set fimd ratio
*/
- cfg &= ~(0xf);
- cfg |= 0x0;
- writel(cfg, &clk->div_disp1_0);
+ clrsetbits_le32(&clk->div_disp1_0, 0xf, 0x0);
+}
+
+void exynos5420_set_lcd_clk(void)
+{
+ struct exynos5420_clock *clk =
+ (struct exynos5420_clock *)samsung_get_base_clock();
+ unsigned int cfg;
+
+ /*
+ * CLK_SRC_DISP10
+ * FIMD1_SEL [4]
+ * 0: SCLK_RPLL
+ * 1: SCLK_SPLL
+ */
+ cfg = readl(&clk->src_disp10);
+ cfg &= ~(0x1 << 4);
+ cfg |= (0 << 4);
+ writel(cfg, &clk->src_disp10);
+
+ /*
+ * CLK_DIV_DISP10
+ * FIMD1_RATIO [3:0]
+ */
+ cfg = readl(&clk->div_disp10);
+ cfg &= ~(0xf << 0);
+ cfg |= (0 << 0);
+ writel(cfg, &clk->div_disp10);
+}
+
+void exynos5800_set_lcd_clk(void)
+{
+ struct exynos5420_clock *clk =
+ (struct exynos5420_clock *)samsung_get_base_clock();
+ unsigned int cfg;
+
+ /*
+ * Use RPLL for pixel clock
+ * CLK_SRC_DISP10 CLKMUX_FIMD1 [6:4]
+ * ==================
+ * 111: SCLK_RPLL
+ */
+ cfg = readl(&clk->src_disp10) | (0x7 << 4);
+ writel(cfg, &clk->src_disp10);
+
+ /*
+ * CLK_DIV_DISP10
+ * FIMD1_RATIO [3:0]
+ */
+ clrsetbits_le32(&clk->div_disp10, 0xf << 0, 0x0 << 0);
}
void exynos4_set_mipi_clk(void)
{
struct exynos4_clock *clk =
(struct exynos4_clock *)samsung_get_base_clock();
- unsigned int cfg = 0;
/*
* CLK_SRC_LCD0
* MIPI0_SEL [12:15]
* set mipi0 src clock 0x6: SCLK_MPLL
*/
- cfg = readl(&clk->src_lcd0);
- cfg &= ~(0xf << 12);
- cfg |= (0x6 << 12);
- writel(cfg, &clk->src_lcd0);
+ clrsetbits_le32(&clk->src_lcd0, 0xf << 12, 0x6 << 12);
/*
* CLK_SRC_MASK_LCD0
* MIPI0_MASK [12]
* set src mask mipi0 0x1: Unmask
*/
- cfg = readl(&clk->src_mask_lcd0);
- cfg |= (0x1 << 12);
- writel(cfg, &clk->src_mask_lcd0);
+ setbits_le32(&clk->src_mask_lcd0, 0x1 << 12);
/*
* CLK_GATE_IP_LCD0
* CLK_PPMULCD0 [5]
* Gating all clocks for MIPI0
*/
- cfg = readl(&clk->gate_ip_lcd0);
- cfg |= 1 << 3;
- writel(cfg, &clk->gate_ip_lcd0);
+ setbits_le32(&clk->gate_ip_lcd0, 1 << 3);
/*
* CLK_DIV_LCD0
* MIPI0_PRE_RATIO [23:20]
* set mipi ratio
*/
- cfg &= ~(0xf << 16);
- cfg |= (0x1 << 16);
- writel(cfg, &clk->div_lcd0);
-}
-
-/*
- * I2C
- *
- * exynos5: obtaining the I2C clock
- */
-static unsigned long exynos5_get_i2c_clk(void)
-{
- struct exynos5_clock *clk =
- (struct exynos5_clock *)samsung_get_base_clock();
- unsigned long aclk_66, aclk_66_pre, sclk;
- unsigned int ratio;
-
- sclk = get_pll_clk(MPLL);
-
- ratio = (readl(&clk->div_top1)) >> 24;
- ratio &= 0x7;
- aclk_66_pre = sclk / (ratio + 1);
- ratio = readl(&clk->div_top0);
- ratio &= 0x7;
- aclk_66 = aclk_66_pre / (ratio + 1);
- return aclk_66;
+ clrsetbits_le32(&clk->div_lcd0, 0xf << 16, 0x1 << 16);
}
int exynos5_set_epll_clk(unsigned long rate)
return 0;
}
-void exynos5_set_i2s_clk_source(void)
+int exynos5_set_i2s_clk_source(unsigned int i2s_id)
{
struct exynos5_clock *clk =
(struct exynos5_clock *)samsung_get_base_clock();
-
- clrsetbits_le32(&clk->src_peric1, AUDIO1_SEL_MASK,
- (CLK_SRC_SCLK_EPLL));
+ unsigned int *audio_ass = (unsigned int *)samsung_get_base_audio_ass();
+
+ if (i2s_id == 0) {
+ setbits_le32(&clk->src_top2, CLK_SRC_MOUT_EPLL);
+ clrsetbits_le32(&clk->src_mau, AUDIO0_SEL_MASK,
+ (CLK_SRC_SCLK_EPLL));
+ setbits_le32(audio_ass, AUDIO_CLKMUX_ASS);
+ } else if (i2s_id == 1) {
+ clrsetbits_le32(&clk->src_peric1, AUDIO1_SEL_MASK,
+ (CLK_SRC_SCLK_EPLL));
+ } else {
+ return -1;
+ }
+ return 0;
}
int exynos5_set_i2s_clk_prescaler(unsigned int src_frq,
- unsigned int dst_frq)
+ unsigned int dst_frq,
+ unsigned int i2s_id)
{
struct exynos5_clock *clk =
(struct exynos5_clock *)samsung_get_base_clock();
}
div = (src_frq / dst_frq);
- if (div > AUDIO_1_RATIO_MASK) {
- debug("%s: Frequency ratio is out of range\n", __func__);
- debug("src frq = %d des frq = %d ", src_frq, dst_frq);
+ if (i2s_id == 0) {
+ if (div > AUDIO_0_RATIO_MASK) {
+ debug("%s: Frequency ratio is out of range\n",
+ __func__);
+ debug("src frq = %d des frq = %d ", src_frq, dst_frq);
+ return -1;
+ }
+ clrsetbits_le32(&clk->div_mau, AUDIO_0_RATIO_MASK,
+ (div & AUDIO_0_RATIO_MASK));
+ } else if (i2s_id == 1) {
+ if (div > AUDIO_1_RATIO_MASK) {
+ debug("%s: Frequency ratio is out of range\n",
+ __func__);
+ debug("src frq = %d des frq = %d ", src_frq, dst_frq);
+ return -1;
+ }
+ clrsetbits_le32(&clk->div_peric4, AUDIO_1_RATIO_MASK,
+ (div & AUDIO_1_RATIO_MASK));
+ } else {
return -1;
}
- clrsetbits_le32(&clk->div_peric4, AUDIO_1_RATIO_MASK,
- (div & AUDIO_1_RATIO_MASK));
return 0;
}
return 1;
for (i = 1; i <= loops; i++) {
- const unsigned int effective_div = max(min(input_rate / i /
- target_rate, cap), 1);
+ const unsigned int effective_div =
+ max(min(input_rate / i / target_rate, cap), 1U);
const unsigned int effective_rate = input_rate / i /
effective_div;
const int error = target_rate - effective_rate;
return 0;
}
+static int exynos5420_set_spi_clk(enum periph_id periph_id,
+ unsigned int rate)
+{
+ struct exynos5420_clock *clk =
+ (struct exynos5420_clock *)samsung_get_base_clock();
+ int main;
+ unsigned int fine;
+ unsigned shift, pre_shift;
+ unsigned div_mask = 0xf, pre_div_mask = 0xff;
+ u32 *reg;
+ u32 *pre_reg;
+
+ main = clock_calc_best_scalar(4, 8, 400000000, rate, &fine);
+ if (main < 0) {
+ debug("%s: Cannot set clock rate for periph %d",
+ __func__, periph_id);
+ return -1;
+ }
+ main = main - 1;
+ fine = fine - 1;
+
+ switch (periph_id) {
+ case PERIPH_ID_SPI0:
+ reg = &clk->div_peric1;
+ shift = 20;
+ pre_reg = &clk->div_peric4;
+ pre_shift = 8;
+ break;
+ case PERIPH_ID_SPI1:
+ reg = &clk->div_peric1;
+ shift = 24;
+ pre_reg = &clk->div_peric4;
+ pre_shift = 16;
+ break;
+ case PERIPH_ID_SPI2:
+ reg = &clk->div_peric1;
+ shift = 28;
+ pre_reg = &clk->div_peric4;
+ pre_shift = 24;
+ break;
+ case PERIPH_ID_SPI3:
+ reg = &clk->div_isp1;
+ shift = 16;
+ pre_reg = &clk->div_isp1;
+ pre_shift = 0;
+ break;
+ case PERIPH_ID_SPI4:
+ reg = &clk->div_isp1;
+ shift = 20;
+ pre_reg = &clk->div_isp1;
+ pre_shift = 8;
+ break;
+ default:
+ debug("%s: Unsupported peripheral ID %d\n", __func__,
+ periph_id);
+ return -1;
+ }
+
+ clrsetbits_le32(reg, div_mask << shift, (main & div_mask) << shift);
+ clrsetbits_le32(pre_reg, pre_div_mask << pre_shift,
+ (fine & pre_div_mask) << pre_shift);
+
+ return 0;
+}
+
static unsigned long exynos4_get_i2c_clk(void)
{
struct exynos4_clock *clk =
unsigned long get_pll_clk(int pllreg)
{
- if (cpu_is_exynos5())
+ if (cpu_is_exynos5()) {
+ if (proid_is_exynos5420() || proid_is_exynos5800())
+ return exynos542x_get_pll_clk(pllreg);
return exynos5_get_pll_clk(pllreg);
- else {
+ } else if (cpu_is_exynos4()) {
if (proid_is_exynos4412())
return exynos4x12_get_pll_clk(pllreg);
return exynos4_get_pll_clk(pllreg);
}
+
+ return 0;
}
unsigned long get_arm_clk(void)
{
- if (cpu_is_exynos5())
+ if (cpu_is_exynos5()) {
return exynos5_get_arm_clk();
- else {
+ } else if (cpu_is_exynos4()) {
if (proid_is_exynos4412())
return exynos4x12_get_arm_clk();
return exynos4_get_arm_clk();
}
+
+ return 0;
}
unsigned long get_i2c_clk(void)
{
- if (cpu_is_exynos5()) {
- return exynos5_get_i2c_clk();
- } else if (cpu_is_exynos4()) {
+ if (cpu_is_exynos5())
+ return clock_get_periph_rate(PERIPH_ID_I2C0);
+ else if (cpu_is_exynos4())
return exynos4_get_i2c_clk();
- } else {
- debug("I2C clock is not set for this CPU\n");
- return 0;
- }
+
+ return 0;
}
unsigned long get_pwm_clk(void)
{
- if (cpu_is_exynos5())
+ if (cpu_is_exynos5()) {
return clock_get_periph_rate(PERIPH_ID_PWM0);
- else {
+ } else if (cpu_is_exynos4()) {
if (proid_is_exynos4412())
return exynos4x12_get_pwm_clk();
return exynos4_get_pwm_clk();
}
+
+ return 0;
}
unsigned long get_uart_clk(int dev_index)
{
- if (cpu_is_exynos5())
- return exynos5_get_uart_clk(dev_index);
- else {
+ enum periph_id id;
+
+ switch (dev_index) {
+ case 0:
+ id = PERIPH_ID_UART0;
+ break;
+ case 1:
+ id = PERIPH_ID_UART1;
+ break;
+ case 2:
+ id = PERIPH_ID_UART2;
+ break;
+ case 3:
+ id = PERIPH_ID_UART3;
+ break;
+ default:
+ debug("%s: invalid UART index %d", __func__, dev_index);
+ return -1;
+ }
+
+ if (cpu_is_exynos5()) {
+ return clock_get_periph_rate(id);
+ } else if (cpu_is_exynos4()) {
if (proid_is_exynos4412())
return exynos4x12_get_uart_clk(dev_index);
return exynos4_get_uart_clk(dev_index);
}
+
+ return 0;
}
unsigned long get_mmc_clk(int dev_index)
{
+ enum periph_id id;
+
+ switch (dev_index) {
+ case 0:
+ id = PERIPH_ID_SDMMC0;
+ break;
+ case 1:
+ id = PERIPH_ID_SDMMC1;
+ break;
+ case 2:
+ id = PERIPH_ID_SDMMC2;
+ break;
+ case 3:
+ id = PERIPH_ID_SDMMC3;
+ break;
+ default:
+ debug("%s: invalid MMC index %d", __func__, dev_index);
+ return -1;
+ }
+
if (cpu_is_exynos5())
- return exynos5_get_mmc_clk(dev_index);
- else
+ return clock_get_periph_rate(id);
+ else if (cpu_is_exynos4())
return exynos4_get_mmc_clk(dev_index);
+
+ return 0;
}
void set_mmc_clk(int dev_index, unsigned int div)
{
- if (cpu_is_exynos5())
- exynos5_set_mmc_clk(dev_index, div);
- else {
- if (proid_is_exynos4412())
- exynos4x12_set_mmc_clk(dev_index, div);
+ /* If want to set correct value, it needs to substract one from div.*/
+ if (div > 0)
+ div -= 1;
+
+ if (cpu_is_exynos5()) {
+ if (proid_is_exynos5420() || proid_is_exynos5800())
+ exynos5420_set_mmc_clk(dev_index, div);
+ else
+ exynos5_set_mmc_clk(dev_index, div);
+ } else if (cpu_is_exynos4()) {
exynos4_set_mmc_clk(dev_index, div);
}
}
unsigned long get_lcd_clk(void)
{
- if (cpu_is_exynos4())
+ if (cpu_is_exynos4()) {
return exynos4_get_lcd_clk();
- else
- return exynos5_get_lcd_clk();
+ } else if (cpu_is_exynos5()) {
+ if (proid_is_exynos5420())
+ return exynos5420_get_lcd_clk();
+ else if (proid_is_exynos5800())
+ return exynos5800_get_lcd_clk();
+ else
+ return exynos5_get_lcd_clk();
+ }
+
+ return 0;
}
void set_lcd_clk(void)
{
- if (cpu_is_exynos4())
+ if (cpu_is_exynos4()) {
exynos4_set_lcd_clk();
- else
- exynos5_set_lcd_clk();
+ } else if (cpu_is_exynos5()) {
+ if (proid_is_exynos5250())
+ exynos5_set_lcd_clk();
+ else if (proid_is_exynos5420())
+ exynos5420_set_lcd_clk();
+ else
+ exynos5800_set_lcd_clk();
+ }
}
void set_mipi_clk(void)
int set_spi_clk(int periph_id, unsigned int rate)
{
- if (cpu_is_exynos5())
+ if (cpu_is_exynos5()) {
+ if (proid_is_exynos5420() || proid_is_exynos5800())
+ return exynos5420_set_spi_clk(periph_id, rate);
return exynos5_set_spi_clk(periph_id, rate);
- else
- return 0;
+ }
+
+ return 0;
}
-int set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq)
+int set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq,
+ unsigned int i2s_id)
{
-
if (cpu_is_exynos5())
- return exynos5_set_i2s_clk_prescaler(src_frq, dst_frq);
- else
- return 0;
+ return exynos5_set_i2s_clk_prescaler(src_frq, dst_frq, i2s_id);
+
+ return 0;
}
-void set_i2s_clk_source(void)
+int set_i2s_clk_source(unsigned int i2s_id)
{
if (cpu_is_exynos5())
- exynos5_set_i2s_clk_source();
+ return exynos5_set_i2s_clk_source(i2s_id);
+
+ return 0;
}
int set_epll_clk(unsigned long rate)
{
if (cpu_is_exynos5())
return exynos5_set_epll_clk(rate);
- else
- return 0;
+
+ return 0;
}
projects / platform / kernel / u-boot.git / blobdiff