Commit 6d451367 authored by Hai Li's avatar Hai Li Committed by Stephen Boyd

clk: qcom: Use parent rate when set rate to pixel RCG clock

Since the parent rate has been recalculated, pixel RCG clock
should rely on it to find the correct M/N values during set_rate,
instead of calling __clk_round_rate() to its parent again.
Signed-off-by: default avatarHai Li <hali@codeaurora.org>
Tested-by: default avatarArchit Taneja <architt@codeaurora.org>
Fixes: 99cbd064 ("clk: qcom: Support display RCG clocks")
[sboyd@codeaurora.org: Silenced unused parent variable warning]
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent c76a024e
...@@ -530,19 +530,16 @@ static int clk_pixel_set_rate(struct clk_hw *hw, unsigned long rate, ...@@ -530,19 +530,16 @@ static int clk_pixel_set_rate(struct clk_hw *hw, unsigned long rate,
struct clk_rcg2 *rcg = to_clk_rcg2(hw); struct clk_rcg2 *rcg = to_clk_rcg2(hw);
struct freq_tbl f = *rcg->freq_tbl; struct freq_tbl f = *rcg->freq_tbl;
const struct frac_entry *frac = frac_table_pixel; const struct frac_entry *frac = frac_table_pixel;
unsigned long request, src_rate; unsigned long request;
int delta = 100000; int delta = 100000;
u32 mask = BIT(rcg->hid_width) - 1; u32 mask = BIT(rcg->hid_width) - 1;
u32 hid_div; u32 hid_div;
int index = qcom_find_src_index(hw, rcg->parent_map, f.src);
struct clk *parent = clk_get_parent_by_index(hw->clk, index);
for (; frac->num; frac++) { for (; frac->num; frac++) {
request = (rate * frac->den) / frac->num; request = (rate * frac->den) / frac->num;
src_rate = __clk_round_rate(parent, request); if ((parent_rate < (request - delta)) ||
if ((src_rate < (request - delta)) || (parent_rate > (request + delta)))
(src_rate > (request + delta)))
continue; continue;
regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG, regmap_read(rcg->clkr.regmap, rcg->cmd_rcgr + CFG_REG,
......
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