diff options
| -rw-r--r-- | arch/arm/cpu/armv7/exynos/clock.c | 621 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/exynos/power.c | 28 | ||||
| -rw-r--r-- | arch/arm/dts/exynos4412-odroid.dts | 5 | ||||
| -rw-r--r-- | arch/arm/dts/exynos5422-odroidxu3.dts | 5 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-exynos/clk.h | 4 | ||||
| -rw-r--r-- | board/samsung/common/board.c | 28 | ||||
| -rw-r--r-- | board/samsung/odroid/odroid.c | 12 | ||||
| -rw-r--r-- | doc/device-tree-bindings/exynos/emmc-reset.txt | 15 |
8 files changed, 383 insertions, 335 deletions
diff --git a/arch/arm/cpu/armv7/exynos/clock.c b/arch/arm/cpu/armv7/exynos/clock.c index b31c13b..c6455c2 100644 --- a/arch/arm/cpu/armv7/exynos/clock.c +++ b/arch/arm/cpu/armv7/exynos/clock.c @@ -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 */ @@ -260,11 +302,72 @@ static unsigned long exynos5_get_pll_clk(int pllreg) 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(); @@ -286,27 +389,30 @@ static unsigned long exynos5_get_periph_rate(int peripheral) break; case PERIPH_ID_I2S0: src = readl(&clk->src_mau); - div = readl(&clk->div_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: @@ -316,18 +422,17 @@ static unsigned long exynos5_get_periph_rate(int peripheral) 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_top0); + sub_div = readl(&clk->div_top1); + 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: @@ -340,68 +445,126 @@ static unsigned long exynos5_get_periph_rate(int peripheral) 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); - - /* 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); - } + /* Clock divider ratio for this peripheral */ + if (bit_info->div_bit >= 0) + div = (div >> bit_info->div_bit) & bit_info->div_mask; - return sub_clk; -} + /* 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; -unsigned long clock_get_periph_rate(int peripheral) -{ - if (cpu_is_exynos5()) - return exynos5_get_periph_rate(peripheral); - else - return 0; + /* Calculate and return required clock rate */ + return (sclk / (div + 1)) / (sub_div + 1); } -/* exynos5420: return pll clock frequency */ -static unsigned long exynos5420_get_pll_clk(int pllreg) +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(); - unsigned long r, k = 0; + (struct exynos5420_clock *)samsung_get_base_clock(); - switch (pllreg) { - case APLL: - r = readl(&clk->apll_con0); + 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 MPLL: - r = readl(&clk->mpll_con0); + 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 EPLL: - r = readl(&clk->epll_con0); - k = readl(&clk->epll_con1); + 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 VPLL: - r = readl(&clk->vpll_con0); - k = readl(&clk->vpll_con1); + 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 BPLL: - r = readl(&clk->bpll_con0); + 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; - case RPLL: - r = readl(&clk->rpll_con0); - k = readl(&clk->rpll_con1); + 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 SPLL: - r = readl(&clk->spll_con0); + 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: - printf("Unsupported PLL (%d)\n", pllreg); + debug("%s: EXYNOS542X_SRC %d not supported", __func__, src); return 0; } - return exynos_get_pll_clk(pllreg, r, k); + /* 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 */ @@ -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); diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c index 1520d64..1b12051 100644 --- a/arch/arm/cpu/armv7/exynos/power.c +++ b/arch/arm/cpu/armv7/exynos/power.c @@ -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) diff --git a/arch/arm/dts/exynos4412-odroid.dts b/arch/arm/dts/exynos4412-odroid.dts index 00a2917..582f6e5 100644 --- a/arch/arm/dts/exynos4412-odroid.dts +++ b/arch/arm/dts/exynos4412-odroid.dts @@ -85,4 +85,9 @@ reg = <0x125B0000 0x100>; }; }; + + emmc-reset { + compatible = "samsung,emmc-reset"; + reset-gpio = <&gpk1 2 0>; + }; }; diff --git a/arch/arm/dts/exynos5422-odroidxu3.dts b/arch/arm/dts/exynos5422-odroidxu3.dts index 8f46637..d0a8621 100644 --- a/arch/arm/dts/exynos5422-odroidxu3.dts +++ b/arch/arm/dts/exynos5422-odroidxu3.dts @@ -46,4 +46,9 @@ mmc@12220000 { fifoth_val = <0x201f0020>; }; + + emmc-reset { + compatible = "samsung,emmc-reset"; + reset-gpio = <&gpd1 0 0>; + }; }; diff --git a/arch/arm/include/asm/arch-exynos/clk.h b/arch/arm/include/asm/arch-exynos/clk.h index db24dc0..2a17dfc 100644 --- a/arch/arm/include/asm/arch-exynos/clk.h +++ b/arch/arm/include/asm/arch-exynos/clk.h @@ -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); diff --git a/board/samsung/common/board.c b/board/samsung/common/board.c index 8b4c8e9..da2245f 100644 --- a/board/samsung/common/board.c +++ b/board/samsung/common/board.c @@ -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); + } +} diff --git a/board/samsung/odroid/odroid.c b/board/samsung/odroid/odroid.c index e3517f2..bff6ac9 100644 --- a/board/samsung/odroid/odroid.c +++ b/board/samsung/odroid/odroid.c @@ -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); -} diff --git a/doc/device-tree-bindings/exynos/emmc-reset.txt b/doc/device-tree-bindings/exynos/emmc-reset.txt new file mode 100644 index 0000000..5e7ba26 --- /dev/null +++ b/doc/device-tree-bindings/exynos/emmc-reset.txt @@ -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>; +}; |