[RFC,03/12] clk: qcom: support for alpha mode configuration

Commit Message

Abhishek Sahu July 27, 2017, 11:10 a.m. UTC

The current configuration does not fully configure PLL alpha mode
and values so this patch

1. Configures PLL_ALPHA_VAL_U for PLL which supports 40 bit alpha.
2. Adds alpha enable and alpha mode configuration support.

Signed-off-by: Abhishek Sahu <[e-mail]>
---
 drivers/clk/qcom/clk-alpha-pll.c | 5 +++++
 drivers/clk/qcom/clk-alpha-pll.h | 3 +++
 2 files changed, 8 insertions(+)

Patch

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index e6cde2d..6291048 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -123,6 +123,9 @@  void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
 		regmap_write(regmap, off + PLL_CONFIG_CTL_U,
 			     config->config_ctl_hi_val);
 
+	if (!(pll->flags & SUPPORTS_16BIT_ALPHA))
+		regmap_write(regmap, off + PLL_ALPHA_VAL_U, config->alpha_hi);
+
 	val = config->main_output_mask;
 	val |= config->aux_output_mask;
 	val |= config->aux2_output_mask;
@@ -130,6 +133,8 @@  void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
 	val |= config->pre_div_val;
 	val |= config->post_div_val;
 	val |= config->vco_val;
+	val |= config->alpha_en_mask;
+	val |= config->alpha_mode_mask;
 
 	mask = config->main_output_mask;
 	mask |= config->aux_output_mask;
diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
index bbd6aa9..39686db 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -59,12 +59,15 @@  struct clk_alpha_pll_postdiv {
 struct alpha_pll_config {
 	u32 l;
 	u32 alpha;
+	u32 alpha_hi;
 	u32 config_ctl_val;
 	u32 config_ctl_hi_val;
 	u32 main_output_mask;
 	u32 aux_output_mask;
 	u32 aux2_output_mask;
 	u32 early_output_mask;
+	u32 alpha_en_mask;
+	u32 alpha_mode_mask;
 	u32 pre_div_val;
 	u32 pre_div_mask;
 	u32 post_div_val;