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Subject[RFC 03/12] clk: qcom: support for alpha mode configuration
Date
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 <absahu@codeaurora.org>
---
drivers/clk/qcom/clk-alpha-pll.c | 5 +++++
drivers/clk/qcom/clk-alpha-pll.h | 3 +++
2 files changed, 8 insertions(+)

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;
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
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