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clk: qcom: Add support to initialize alpha plls

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Add a function to do initial configuration of the alpha plls

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Rajendra Nayak 2016-09-29 14:05:43 +05:30 committed by Stephen Boyd
parent feb65645c1
commit 9f4e627702
2 changed files with 51 additions and 0 deletions
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31
drivers/clk/qcom/clk-alpha-pll.c
View file

@ -49,6 +49,7 @@
#define PLL_USER_CTL_U 0x14
#define PLL_CONFIG_CTL 0x18
#define PLL_CONFIG_CTL_U 0x20
#define PLL_TEST_CTL 0x1c
#define PLL_TEST_CTL_U 0x20
#define PLL_STATUS 0x24
@ -106,6 +107,36 @@ static int wait_for_pll(struct clk_alpha_pll *pll, u32 mask, bool inverse,
#define wait_for_pll_offline(pll) \
wait_for_pll(pll, PLL_OFFLINE_ACK, 0, "offline")
void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
const struct alpha_pll_config *config)
{
u32 val, mask;
u32 off = pll->offset;
regmap_write(regmap, off + PLL_L_VAL, config->l);
regmap_write(regmap, off + PLL_ALPHA_VAL, config->alpha);
regmap_write(regmap, off + PLL_CONFIG_CTL, config->config_ctl_val);
regmap_write(regmap, off + PLL_CONFIG_CTL_U, config->config_ctl_hi_val);
val = config->main_output_mask;
val |= config->aux_output_mask;
val |= config->aux2_output_mask;
val |= config->early_output_mask;
val |= config->pre_div_val;
val |= config->post_div_val;
val |= config->vco_val;
mask = config->main_output_mask;
mask |= config->aux_output_mask;
mask |= config->aux2_output_mask;
mask |= config->early_output_mask;
mask |= config->pre_div_mask;
mask |= config->post_div_mask;
mask |= config->vco_mask;
regmap_update_bits(regmap, off + PLL_USER_CTL, mask, val);
}
static int clk_alpha_pll_hwfsm_enable(struct clk_hw *hw)
{
int ret;

20
drivers/clk/qcom/clk-alpha-pll.h
View file

@ -53,8 +53,28 @@ struct clk_alpha_pll_postdiv {
struct clk_regmap clkr;
};
struct alpha_pll_config {
u32 l;
u32 alpha;
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 pre_div_val;
u32 pre_div_mask;
u32 post_div_val;
u32 post_div_mask;
u32 vco_val;
u32 vco_mask;
};
extern const struct clk_ops clk_alpha_pll_ops;
extern const struct clk_ops clk_alpha_pll_hwfsm_ops;
extern const struct clk_ops clk_alpha_pll_postdiv_ops;
void clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap,
const struct alpha_pll_config *config);
#endif