diff options
| author | Adam Skladowski <a39.skl@gmail.com> | 2023-08-12 14:24:45 +0300 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2023-09-13 22:07:58 +0300 |
| commit | 500a4609eef46d49a260173b66cabb20bd5159ad (patch) | |
| tree | f93ee20740b81bfab32b74951b8c6d4dc545e5e2 | |
| parent | 0bb80ecc33a8fb5a682236443c1e740d5c917d1d (diff) | |
| download | linux-500a4609eef46d49a260173b66cabb20bd5159ad.tar.xz | |
clk: qcom: clk-hfpll: Configure l_val in init when required
Add support for pre-configuring default frequency multiplier,
this appears to be required on some platforms like MSM8976.
Without configuring L_VAL device reboots when trying to bring PLL up.
Signed-off-by: Adam Skladowski <a39.skl@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230812112534.8610-3-a39.skl@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
| -rw-r--r-- | drivers/clk/qcom/clk-hfpll.c | 4 | ||||
| -rw-r--r-- | drivers/clk/qcom/clk-hfpll.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/clk/qcom/clk-hfpll.c b/drivers/clk/qcom/clk-hfpll.c index 86f728dc69e5..705352aff067 100644 --- a/drivers/clk/qcom/clk-hfpll.c +++ b/drivers/clk/qcom/clk-hfpll.c @@ -44,6 +44,10 @@ static void __clk_hfpll_init_once(struct clk_hw *hw) regmap_write(regmap, hd->user_reg, regval); } + /* Write L_VAL from conf if it exist */ + if (hd->l_val) + regmap_write(regmap, hd->l_reg, hd->l_val); + if (hd->droop_reg) regmap_write(regmap, hd->droop_reg, hd->droop_val); diff --git a/drivers/clk/qcom/clk-hfpll.h b/drivers/clk/qcom/clk-hfpll.h index 2a57b2fb2f2f..27b9effcb3fd 100644 --- a/drivers/clk/qcom/clk-hfpll.h +++ b/drivers/clk/qcom/clk-hfpll.h @@ -18,6 +18,7 @@ struct hfpll_data { u32 status_reg; u8 lock_bit; + u32 l_val; u32 droop_val; u32 config_val; u32 user_val; |