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Merge git://git.denx.de/u-boot-samsung

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Tom Rini 2015-02-13 13:11:33 -05:00
commit eca99c0256
8 changed files with 433 additions and 385 deletions
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721
arch/arm/cpu/armv7/exynos/clock.c
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@ -20,42 +20,84 @@
* 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[] = {
{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 */
@ -260,112 +302,8 @@ static unsigned long exynos5_get_pll_clk(int pllreg)
return fout;
}
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 exynos5_clock *clk =
(struct exynos5_clock *)samsung_get_base_clock();
switch (peripheral) {
case PERIPH_ID_UART0:
case PERIPH_ID_UART1:
case PERIPH_ID_UART2:
case PERIPH_ID_UART3:
src = readl(&clk->src_peric0);
div = readl(&clk->div_peric0);
break;
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_peric3);
break;
case PERIPH_ID_I2S0:
src = readl(&clk->src_mau);
div = readl(&clk->div_mau);
case PERIPH_ID_SPI0:
case PERIPH_ID_SPI1:
src = readl(&clk->src_peric1);
div = readl(&clk->div_peric1);
break;
case PERIPH_ID_SPI2:
src = readl(&clk->src_peric1);
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);
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:
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;
default:
debug("%s: invalid peripheral %d", __func__, peripheral);
return -1;
};
src = (src >> bit_info->src_bit) & 0xf;
switch (src) {
case EXYNOS_SRC_MPLL:
sclk = exynos5_get_pll_clk(MPLL);
break;
case EXYNOS_SRC_EPLL:
sclk = exynos5_get_pll_clk(EPLL);
break;
case EXYNOS_SRC_VPLL:
sclk = exynos5_get_pll_clk(VPLL);
break;
default:
return 0;
}
/* Ratio clock division for this peripheral */
sub_div = (div >> bit_info->div_bit) & 0xf;
sub_clk = sclk / (sub_div + 1);
/* 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);
}
return sub_clk;
}
unsigned long clock_get_periph_rate(int peripheral)
{
if (cpu_is_exynos5())
return exynos5_get_periph_rate(peripheral);
else
return 0;
}
/* exynos5420: return pll clock frequency */
static unsigned long exynos5420_get_pll_clk(int pllreg)
/* 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();
@ -404,6 +342,231 @@ static unsigned long exynos5420_get_pll_clk(int pllreg)
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 = 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();
switch (peripheral) {
case PERIPH_ID_UART0:
case PERIPH_ID_UART1:
case PERIPH_ID_UART2:
case PERIPH_ID_UART3:
src = readl(&clk->src_peric0);
div = readl(&clk->div_peric0);
break;
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_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 = sub_div = readl(&clk->div_peric1);
break;
case PERIPH_ID_SPI2:
src = readl(&clk->src_peric1);
div = sub_div = readl(&clk->div_peric2);
break;
case PERIPH_ID_SPI3:
case PERIPH_ID_SPI4:
src = readl(&clk->sclk_src_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 = sub_div = readl(&clk->div_fsys2);
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:
src = EXYNOS_SRC_MPLL;
div = readl(&clk->div_top0);
sub_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;
switch (src) {
case EXYNOS_SRC_MPLL:
sclk = exynos5_get_pll_clk(MPLL);
break;
case EXYNOS_SRC_EPLL:
sclk = exynos5_get_pll_clk(EPLL);
break;
case EXYNOS_SRC_VPLL:
sclk = exynos5_get_pll_clk(VPLL);
break;
default:
debug("%s: EXYNOS_SRC %d not supported\n", __func__, src);
return 0;
}
/* 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;
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;
}
/* 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 (proid_is_exynos5420() || proid_is_exynos5800())
return exynos542x_get_periph_rate(peripheral);
return exynos5_get_periph_rate(peripheral);
} else {
return 0;
}
}
/* exynos4: return ARM clock frequency */
static unsigned long exynos4_get_arm_clk(void)
{
@ -527,27 +690,6 @@ static unsigned long exynos4x12_get_pwm_clk(void)
return pclk;
}
/* exynos5420: return pwm clock frequency */
static unsigned long exynos5420_get_pwm_clk(void)
{
struct exynos5420_clock *clk =
(struct exynos5420_clock *)samsung_get_base_clock();
unsigned long pclk, sclk;
unsigned int ratio;
/*
* CLK_DIV_PERIC0
* PWM_RATIO [31:28]
*/
ratio = readl(&clk->div_peric0);
ratio = (ratio >> 28) & 0xf;
sclk = get_pll_clk(MPLL);
pclk = sclk / (ratio + 1);
return pclk;
}
/* exynos4: return uart clock frequency */
static unsigned long exynos4_get_uart_clk(int dev_index)
{
@ -640,100 +782,6 @@ static unsigned long exynos4x12_get_uart_clk(int dev_index)
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;
}
/* exynos5420: return uart clock frequency */
static unsigned long exynos5420_get_uart_clk(int dev_index)
{
struct exynos5420_clock *clk =
(struct exynos5420_clock *)samsung_get_base_clock();
unsigned long uclk, sclk;
unsigned int sel;
unsigned int ratio;
/*
* CLK_SRC_PERIC0
* UART0_SEL [6:4]
* UART1_SEL [10:8]
* UART2_SEL [14:12]
* UART3_SEL [18:16]
* generalised calculation as follows
* sel = (sel >> ((dev_index * 4) + 4)) & mask;
*/
sel = readl(&clk->src_peric0);
sel = (sel >> ((dev_index * 4) + 4)) & 0x7;
if (sel == 0x3)
sclk = get_pll_clk(MPLL);
else if (sel == 0x6)
sclk = get_pll_clk(EPLL);
else if (sel == 0x7)
sclk = get_pll_clk(RPLL);
else
return 0;
/*
* CLK_DIV_PERIC0
* UART0_RATIO [11:8]
* UART1_RATIO [15:12]
* UART2_RATIO [19:16]
* UART3_RATIO [23:20]
* generalised calculation as follows
* ratio = (ratio >> ((dev_index * 4) + 8)) & mask;
*/
ratio = readl(&clk->div_peric0);
ratio = (ratio >> ((dev_index * 4) + 8)) & 0xf;
uclk = sclk / (ratio + 1);
return uclk;
}
static unsigned long exynos4_get_mmc_clk(int dev_index)
{
struct exynos4_clock *clk =
@ -783,94 +831,6 @@ static unsigned long exynos4_get_mmc_clk(int dev_index)
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;
}
static unsigned long exynos5420_get_mmc_clk(int dev_index)
{
struct exynos5420_clock *clk =
(struct exynos5420_clock *)samsung_get_base_clock();
unsigned long uclk, sclk;
unsigned int sel, ratio;
/*
* CLK_SRC_FSYS
* MMC0_SEL [10:8]
* MMC1_SEL [14:12]
* MMC2_SEL [18:16]
* generalised calculation as follows
* sel = (sel >> ((dev_index * 4) + 8)) & mask
*/
sel = readl(&clk->src_fsys);
sel = (sel >> ((dev_index * 4) + 8)) & 0x7;
if (sel == 0x3)
sclk = get_pll_clk(MPLL);
else if (sel == 0x4)
sclk = get_pll_clk(SPLL);
else if (sel == 0x6)
sclk = get_pll_clk(EPLL);
else
return 0;
/*
* CLK_DIV_FSYS1
* MMC0_RATIO [9:0]
* MMC1_RATIO [19:10]
* MMC2_RATIO [29:20]
* generalised calculation as follows
* ratio = (ratio >> (dev_index * 10)) & mask
*/
ratio = readl(&clk->div_fsys1);
ratio = (ratio >> (dev_index * 10)) & 0x3ff;
uclk = (sclk / (ratio + 1));
return uclk;
}
/* exynos4: set the mmc clock */
static void exynos4_set_mmc_clk(int dev_index, unsigned int div)
{
@ -1249,29 +1209,6 @@ void exynos4_set_mipi_clk(void)
clrsetbits_le32(&clk->div_lcd0, 0xf << 16, 0x1 << 16);
}
/*
* 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;
}
int exynos5_set_epll_clk(unsigned long rate)
{
unsigned int epll_con, epll_con_k;
@ -1585,7 +1522,7 @@ unsigned long get_pll_clk(int pllreg)
{
if (cpu_is_exynos5()) {
if (proid_is_exynos5420() || proid_is_exynos5800())
return exynos5420_get_pll_clk(pllreg);
return exynos542x_get_pll_clk(pllreg);
return exynos5_get_pll_clk(pllreg);
} else {
if (proid_is_exynos4412())
@ -1608,7 +1545,7 @@ unsigned long get_arm_clk(void)
unsigned long get_i2c_clk(void)
{
if (cpu_is_exynos5()) {
return exynos5_get_i2c_clk();
return clock_get_periph_rate(PERIPH_ID_I2C0);
} else if (cpu_is_exynos4()) {
return exynos4_get_i2c_clk();
} else {
@ -1620,8 +1557,6 @@ unsigned long get_i2c_clk(void)
unsigned long get_pwm_clk(void)
{
if (cpu_is_exynos5()) {
if (proid_is_exynos5420() || proid_is_exynos5800())
return exynos5420_get_pwm_clk();
return clock_get_periph_rate(PERIPH_ID_PWM0);
} else {
if (proid_is_exynos4412())
@ -1632,10 +1567,28 @@ unsigned long get_pwm_clk(void)
unsigned long get_uart_clk(int dev_index)
{
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()) {
if (proid_is_exynos5420() || proid_is_exynos5800())
return exynos5420_get_uart_clk(dev_index);
return exynos5_get_uart_clk(dev_index);
return clock_get_periph_rate(id);
} else {
if (proid_is_exynos4412())
return exynos4x12_get_uart_clk(dev_index);
@ -1645,10 +1598,28 @@ unsigned long get_uart_clk(int dev_index)
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()) {
if (proid_is_exynos5420() || proid_is_exynos5800())
return exynos5420_get_mmc_clk(dev_index);
return exynos5_get_mmc_clk(dev_index);
return clock_get_periph_rate(id);
} else {
return exynos4_get_mmc_clk(dev_index);
}
@ -1656,6 +1627,10 @@ unsigned long get_mmc_clk(int dev_index)
void set_mmc_clk(int dev_index, unsigned int 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);

28
arch/arm/cpu/armv7/exynos/power.c
View file

@ -102,10 +102,34 @@ static void exynos5_set_usbdrd_phy_ctrl(unsigned int enable)
}
}
static void exynos5420_set_usbdev_phy_ctrl(unsigned int enable)
{
struct exynos5420_power *power =
(struct exynos5420_power *)samsung_get_base_power();
if (enable) {
/* Enabling USBDEV_PHY */
setbits_le32(&power->usbdev_phy_control,
POWER_USB_DRD_PHY_CTRL_EN);
setbits_le32(&power->usbdev1_phy_control,
POWER_USB_DRD_PHY_CTRL_EN);
} else {
/* Disabling USBDEV_PHY */
clrbits_le32(&power->usbdev_phy_control,
POWER_USB_DRD_PHY_CTRL_EN);
clrbits_le32(&power->usbdev1_phy_control,
POWER_USB_DRD_PHY_CTRL_EN);
}
}
void set_usbdrd_phy_ctrl(unsigned int enable)
{
if (cpu_is_exynos5())
exynos5_set_usbdrd_phy_ctrl(enable);
if (cpu_is_exynos5()) {
if (proid_is_exynos5420() || proid_is_exynos5800())
exynos5420_set_usbdev_phy_ctrl(enable);
else
exynos5_set_usbdrd_phy_ctrl(enable);
}
}
static void exynos5_dp_phy_control(unsigned int enable)

5
arch/arm/dts/exynos4412-odroid.dts
View file

@ -85,4 +85,9 @@
reg = <0x125B0000 0x100>;
};
};
emmc-reset {
compatible = "samsung,emmc-reset";
reset-gpio = <&gpk1 2 0>;
};
};

5
arch/arm/dts/exynos5422-odroidxu3.dts
View file

@ -46,4 +46,9 @@
mmc@12220000 {
fifoth_val = <0x201f0020>;
};
emmc-reset {
compatible = "samsung,emmc-reset";
reset-gpio = <&gpd1 0 0>;
};
};

4
arch/arm/include/asm/arch-exynos/clk.h
View file

@ -26,6 +26,10 @@ enum pll_src_bit {
EXYNOS_SRC_MPLL = 6,
EXYNOS_SRC_EPLL,
EXYNOS_SRC_VPLL,
EXYNOS542X_SRC_MPLL = 3,
EXYNOS542X_SRC_SPLL,
EXYNOS542X_SRC_EPLL = 6,
EXYNOS542X_SRC_RPLL,
};
unsigned long get_pll_clk(int pllreg);

28
board/samsung/common/board.c
View file

@ -355,3 +355,31 @@ int misc_init_r(void)
return 0;
}
#endif
void reset_misc(void)
{
struct gpio_desc gpio = {};
int node;
node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
"samsung,emmc-reset");
if (node < 0)
return;
gpio_request_by_name_nodev(gd->fdt_blob, node, "reset-gpio", 0, &gpio,
GPIOD_IS_OUT);
if (dm_gpio_is_valid(&gpio)) {
/*
* Reset eMMC
*
* FIXME: Need to optimize delay time. Minimum 1usec pulse is
* required by 'JEDEC Standard No.84-A441' (eMMC)
* document but real delay time is expected to greater
* than 1usec.
*/
dm_gpio_set_value(&gpio, 0);
mdelay(10);
dm_gpio_set_value(&gpio, 1);
}
}

12
board/samsung/odroid/odroid.c
View file

@ -248,12 +248,12 @@ static void board_clock_init(void)
* MOUTc2c = 800 Mhz
* MOUTpwi = 108 MHz
*
* sclk_g2d_acp = MOUTg2d / (ratio + 1) = 400 (1)
* sclk_g2d_acp = MOUTg2d / (ratio + 1) = 200 (3)
* sclk_c2c = MOUTc2c / (ratio + 1) = 400 (1)
* aclk_c2c = sclk_c2c / (ratio + 1) = 200 (1)
* sclk_pwi = MOUTpwi / (ratio + 1) = 18 (5)
*/
set = G2D_ACP_RATIO(1) | C2C_RATIO(1) | PWI_RATIO(5) |
set = G2D_ACP_RATIO(3) | C2C_RATIO(1) | PWI_RATIO(5) |
C2C_ACLK_RATIO(1) | DVSEM_RATIO(1) | DPM_RATIO(1);
clrsetbits_le32(&clk->div_dmc1, clr, set);
@ -503,11 +503,3 @@ int board_usb_init(int index, enum usb_init_type init)
return s3c_udc_probe(&s5pc210_otg_data);
}
#endif
void reset_misc(void)
{
/* Reset eMMC*/
gpio_set_value(EXYNOS4X12_GPIO_K12, 0);
mdelay(10);
gpio_set_value(EXYNOS4X12_GPIO_K12, 1);
}

15
doc/device-tree-bindings/exynos/emmc-reset.txt Normal file
View file

@ -0,0 +1,15 @@
* Samsung eMMC reset
Some exynos boards require special handling of nRESET_OUT line for eMMC memory
to perform complete reboot.
Required properties:
- compatible: should be "samsung,emmc-reset"
- reset-gpio: gpio chip for eMMC reset.
Example:
emmc-reset {
compatible = "samsung,emmc-reset";
reset-gpio = <&gpk1 2 0>;
};