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path: root/drivers/clk/ti/dpll.c
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Diffstat (limited to 'drivers/clk/ti/dpll.c')
-rw-r--r--drivers/clk/ti/dpll.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/clk/ti/dpll.c b/drivers/clk/ti/dpll.c
index d6f1ac5b53e1..e9f9aee936ae 100644
--- a/drivers/clk/ti/dpll.c
+++ b/drivers/clk/ti/dpll.c
@@ -290,7 +290,9 @@ static void __init of_ti_dpll_setup(struct device_node *node,
struct clk_init_data *init = NULL;
const char **parent_names = NULL;
struct dpll_data *dd = NULL;
+ int ssc_clk_index;
u8 dpll_mode = 0;
+ u32 min_div;
dd = kmemdup(ddt, sizeof(*dd), GFP_KERNEL);
clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL);
@@ -345,6 +347,27 @@ static void __init of_ti_dpll_setup(struct device_node *node,
if (dd->autoidle_mask) {
if (ti_clk_get_reg_addr(node, 3, &dd->autoidle_reg))
goto cleanup;
+
+ ssc_clk_index = 4;
+ } else {
+ ssc_clk_index = 3;
+ }
+
+ if (dd->ssc_deltam_int_mask && dd->ssc_deltam_frac_mask &&
+ dd->ssc_modfreq_mant_mask && dd->ssc_modfreq_exp_mask) {
+ if (ti_clk_get_reg_addr(node, ssc_clk_index++,
+ &dd->ssc_deltam_reg))
+ goto cleanup;
+
+ if (ti_clk_get_reg_addr(node, ssc_clk_index++,
+ &dd->ssc_modfreq_reg))
+ goto cleanup;
+
+ of_property_read_u32(node, "ti,ssc-modfreq-hz",
+ &dd->ssc_modfreq);
+ of_property_read_u32(node, "ti,ssc-deltam", &dd->ssc_deltam);
+ dd->ssc_downspread =
+ of_property_read_bool(node, "ti,ssc-downspread");
}
if (of_property_read_bool(node, "ti,low-power-stop"))
@@ -356,6 +379,10 @@ static void __init of_ti_dpll_setup(struct device_node *node,
if (of_property_read_bool(node, "ti,lock"))
dpll_mode |= 1 << DPLL_LOCKED;
+ if (!of_property_read_u32(node, "ti,min-div", &min_div) &&
+ min_div > dd->min_divider)
+ dd->min_divider = min_div;
+
if (dpll_mode)
dd->modes = dpll_mode;
@@ -585,8 +612,14 @@ static void __init of_ti_am3_no_gate_dpll_setup(struct device_node *node)
const struct dpll_data dd = {
.idlest_mask = 0x1,
.enable_mask = 0x7,
+ .ssc_enable_mask = 0x1 << 12,
+ .ssc_downspread_mask = 0x1 << 14,
.mult_mask = 0x7ff << 8,
.div1_mask = 0x7f,
+ .ssc_deltam_int_mask = 0x3 << 18,
+ .ssc_deltam_frac_mask = 0x3ffff,
+ .ssc_modfreq_mant_mask = 0x7f,
+ .ssc_modfreq_exp_mask = 0x7 << 8,
.max_multiplier = 2047,
.max_divider = 128,
.min_divider = 1,
@@ -645,8 +678,14 @@ static void __init of_ti_am3_dpll_setup(struct device_node *node)
const struct dpll_data dd = {
.idlest_mask = 0x1,
.enable_mask = 0x7,
+ .ssc_enable_mask = 0x1 << 12,
+ .ssc_downspread_mask = 0x1 << 14,
.mult_mask = 0x7ff << 8,
.div1_mask = 0x7f,
+ .ssc_deltam_int_mask = 0x3 << 18,
+ .ssc_deltam_frac_mask = 0x3ffff,
+ .ssc_modfreq_mant_mask = 0x7f,
+ .ssc_modfreq_exp_mask = 0x7 << 8,
.max_multiplier = 2047,
.max_divider = 128,
.min_divider = 1,