Commit c5cc2a0b authored by Tero Kristo's avatar Tero Kristo Committed by Stephen Boyd

clk: ti: dpll: add support for specifying max rate for DPLLs

DPLLs typically have a maximum rate they can support, and this varies
from DPLL to DPLL. Add support of the maximum rate value to the DPLL
data struct, and also add check for this in the DPLL round_rate function.
Signed-off-by: default avatarTero Kristo <>
Reviewed-by: default avatarNishanth Menon <>
Cc: Tomi Valkeinen <>
Cc: Lokesh Vutla <>
Signed-off-by: default avatarStephen Boyd <>
parent fefe0535
......@@ -301,6 +301,9 @@ long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
dd = clk->dpll_data;
if (dd->max_rate && target_rate > dd->max_rate)
target_rate = dd->max_rate;
ref_rate = clk_hw_get_rate(dd->clk_ref);
clk_name = clk_hw_get_name(hw);
pr_debug("clock: %s: starting DPLL round_rate, target rate %lu\n",
......@@ -37,6 +37,7 @@
* @last_rounded_n: cache of the last N result of omap2_dpll_round_rate()
* @min_divider: minimum valid non-bypass divider value (actual)
* @max_divider: maximum valid non-bypass divider value (actual)
* @max_rate: maximum clock rate for the DPLL
* @modes: possible values of @enable_mask
* @autoidle_reg: register containing the DPLL autoidle mode bitfield
* @idlest_reg: register containing the DPLL idle status bitfield
......@@ -81,6 +82,7 @@ struct dpll_data {
u8 last_rounded_n;
u8 min_divider;
u16 max_divider;
unsigned long max_rate;
u8 modes;
void __iomem *autoidle_reg;
void __iomem *idlest_reg;
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