diff options
Diffstat (limited to 'arch/arm/cpu/armv7/omap5/hwinit.c')
| -rw-r--r-- | arch/arm/cpu/armv7/omap5/hwinit.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap5/hwinit.c b/arch/arm/cpu/armv7/omap5/hwinit.c index 8e66a968af..f083198b19 100644 --- a/arch/arm/cpu/armv7/omap5/hwinit.c +++ b/arch/arm/cpu/armv7/omap5/hwinit.c @@ -32,6 +32,7 @@ #include <asm/armv7.h> #include <asm/arch/cpu.h> #include <asm/arch/sys_proto.h> +#include <asm/arch/clocks.h> #include <asm/sizes.h> #include <asm/utils.h> #include <asm/arch/gpio.h> @@ -182,6 +183,121 @@ void do_io_settings(void) writel(EFUSE_3, (*ctrl)->control_efuse_3); writel(EFUSE_4, (*ctrl)->control_efuse_4); } + +static const struct srcomp_params srcomp_parameters[NUM_SYS_CLKS] = { + {0x45, 0x1}, /* 12 MHz */ + {-1, -1}, /* 13 MHz */ + {0x63, 0x2}, /* 16.8 MHz */ + {0x57, 0x2}, /* 19.2 MHz */ + {0x20, 0x1}, /* 26 MHz */ + {-1, -1}, /* 27 MHz */ + {0x41, 0x3} /* 38.4 MHz */ +}; + +void srcomp_enable(void) +{ + u32 srcomp_value, mul_factor, div_factor, clk_val, i; + u32 sysclk_ind = get_sys_clk_index(); + u32 omap_rev = omap_revision(); + + mul_factor = srcomp_parameters[sysclk_ind].multiply_factor; + div_factor = srcomp_parameters[sysclk_ind].divide_factor; + + for (i = 0; i < 4; i++) { + srcomp_value = readl((*ctrl)->control_srcomp_north_side + i*4); + srcomp_value &= + ~(MULTIPLY_FACTOR_XS_MASK | DIVIDE_FACTOR_XS_MASK); + srcomp_value |= (mul_factor << MULTIPLY_FACTOR_XS_SHIFT) | + (div_factor << DIVIDE_FACTOR_XS_SHIFT); + writel(srcomp_value, (*ctrl)->control_srcomp_north_side + i*4); + } + + if ((omap_rev == OMAP5430_ES1_0) || (omap_rev == OMAP5432_ES1_0)) { + clk_val = readl((*prcm)->cm_coreaon_io_srcomp_clkctrl); + clk_val |= OPTFCLKEN_SRCOMP_FCLK_MASK; + writel(clk_val, (*prcm)->cm_coreaon_io_srcomp_clkctrl); + + for (i = 0; i < 4; i++) { + srcomp_value = + readl((*ctrl)->control_srcomp_north_side + i*4); + srcomp_value &= ~PWRDWN_XS_MASK; + writel(srcomp_value, + (*ctrl)->control_srcomp_north_side + i*4); + + while (((readl((*ctrl)->control_srcomp_north_side + i*4) + & SRCODE_READ_XS_MASK) >> + SRCODE_READ_XS_SHIFT) == 0) + ; + + srcomp_value = + readl((*ctrl)->control_srcomp_north_side + i*4); + srcomp_value &= ~OVERRIDE_XS_MASK; + writel(srcomp_value, + (*ctrl)->control_srcomp_north_side + i*4); + } + } else { + srcomp_value = readl((*ctrl)->control_srcomp_east_side_wkup); + srcomp_value &= ~(MULTIPLY_FACTOR_XS_MASK | + DIVIDE_FACTOR_XS_MASK); + srcomp_value |= (mul_factor << MULTIPLY_FACTOR_XS_SHIFT) | + (div_factor << DIVIDE_FACTOR_XS_SHIFT); + writel(srcomp_value, (*ctrl)->control_srcomp_east_side_wkup); + + for (i = 0; i < 4; i++) { + srcomp_value = + readl((*ctrl)->control_srcomp_north_side + i*4); + srcomp_value |= SRCODE_OVERRIDE_SEL_XS_MASK; + writel(srcomp_value, + (*ctrl)->control_srcomp_north_side + i*4); + + srcomp_value = + readl((*ctrl)->control_srcomp_north_side + i*4); + srcomp_value &= ~OVERRIDE_XS_MASK; + writel(srcomp_value, + (*ctrl)->control_srcomp_north_side + i*4); + } + + srcomp_value = + readl((*ctrl)->control_srcomp_east_side_wkup); + srcomp_value |= SRCODE_OVERRIDE_SEL_XS_MASK; + writel(srcomp_value, (*ctrl)->control_srcomp_east_side_wkup); + + srcomp_value = + readl((*ctrl)->control_srcomp_east_side_wkup); + srcomp_value &= ~OVERRIDE_XS_MASK; + writel(srcomp_value, (*ctrl)->control_srcomp_east_side_wkup); + + clk_val = readl((*prcm)->cm_coreaon_io_srcomp_clkctrl); + clk_val |= OPTFCLKEN_SRCOMP_FCLK_MASK; + writel(clk_val, (*prcm)->cm_coreaon_io_srcomp_clkctrl); + + clk_val = readl((*prcm)->cm_wkupaon_io_srcomp_clkctrl); + clk_val |= OPTFCLKEN_SRCOMP_FCLK_MASK; + writel(clk_val, (*prcm)->cm_wkupaon_io_srcomp_clkctrl); + + for (i = 0; i < 4; i++) { + while (((readl((*ctrl)->control_srcomp_north_side + i*4) + & SRCODE_READ_XS_MASK) >> + SRCODE_READ_XS_SHIFT) == 0) + ; + + srcomp_value = + readl((*ctrl)->control_srcomp_north_side + i*4); + srcomp_value &= ~SRCODE_OVERRIDE_SEL_XS_MASK; + writel(srcomp_value, + (*ctrl)->control_srcomp_north_side + i*4); + } + + while (((readl((*ctrl)->control_srcomp_east_side_wkup) & + SRCODE_READ_XS_MASK) >> SRCODE_READ_XS_SHIFT) == 0) + ; + + srcomp_value = + readl((*ctrl)->control_srcomp_east_side_wkup); + srcomp_value &= ~SRCODE_OVERRIDE_SEL_XS_MASK; + writel(srcomp_value, (*ctrl)->control_srcomp_east_side_wkup); + } +} #endif void config_data_eye_leveling_samples(u32 emif_base) |
