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Diffstat (limited to 'arch/arm/cpu/armv7/omap5')
-rw-r--r--arch/arm/cpu/armv7/omap5/hwinit.c116
-rw-r--r--arch/arm/cpu/armv7/omap5/prcm-regs.c5
2 files changed, 120 insertions, 1 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)
diff --git a/arch/arm/cpu/armv7/omap5/prcm-regs.c b/arch/arm/cpu/armv7/omap5/prcm-regs.c
index 58c9d5039a..5e5abcce5b 100644
--- a/arch/arm/cpu/armv7/omap5/prcm-regs.c
+++ b/arch/arm/cpu/armv7/omap5/prcm-regs.c
@@ -149,6 +149,7 @@ struct prcm_regs const omap5_es1_prcm = {
/* cm2.core */
.cm_coreaon_bandgap_clkctrl = 0x4a008648,
+ .cm_coreaon_io_srcomp_clkctrl = 0x4a008650,
.cm_l3_1_clkstctrl = 0x4a008700,
.cm_l3_1_dynamicdep = 0x4a008708,
.cm_l3_1_l3_1_clkctrl = 0x4a008720,
@@ -294,6 +295,7 @@ struct prcm_regs const omap5_es1_prcm = {
.cm_wkup_rtc_clkctrl = 0x4ae07880,
.cm_wkup_bandgap_clkctrl = 0x4ae07888,
.cm_wkupaon_scrm_clkctrl = 0x4ae07890,
+ .cm_wkupaon_io_srcomp_clkctrl = 0x4ae07898,
.prm_vc_val_bypass = 0x4ae07ba0,
.prm_vc_cfg_i2c_mode = 0x4ae07bb4,
.prm_vc_cfg_i2c_clk = 0x4ae07bb8,
@@ -502,7 +504,7 @@ struct prcm_regs const omap5_es2_prcm = {
.cm_ssc_deltamstep_dpll_unipro = 0x4a0081e8,
.cm_ssc_modfreqdiv_dpll_unipro = 0x4a0081ec,
.cm_coreaon_bandgap_clkctrl = 0x4a008648,
-
+ .cm_coreaon_io_srcomp_clkctrl = 0x4a008650,
/* cm2.core */
.cm_l3_1_clkstctrl = 0x4a008700,
@@ -650,6 +652,7 @@ struct prcm_regs const omap5_es2_prcm = {
.cm_wkup_rtc_clkctrl = 0x4ae07980,
.cm_wkup_bandgap_clkctrl = 0x4ae07988,
.cm_wkupaon_scrm_clkctrl = 0x4ae07990,
+ .cm_wkupaon_io_srcomp_clkctrl = 0x4ae07998,
.prm_vc_val_bypass = 0x4ae07ca0,
.prm_vc_cfg_i2c_mode = 0x4ae07cb4,
.prm_vc_cfg_i2c_clk = 0x4ae07cb8,