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@xxxxxxxxx>
---
drivers/clk/qcom/clk-hfpll.c | 4 ++++
drivers/clk/qcom/clk-hfpll.h | 1 +
2 files changed, 5 insertions(+)
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;
--
2.25.1
