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Commit 9f4e6277 authored by Rajendra Nayak's avatar Rajendra Nayak Committed by Stephen Boyd
Browse files

clk: qcom: Add support to initialize alpha plls 



Add a function to do initial configuration of the alpha plls

Signed-off-by: default avatarRajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent feb65645

drivers/clk/qcom/clk-alpha-pll.c

+31 −0
Original line number Diff line number Diff line
@@ -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;

drivers/clk/qcom/clk-alpha-pll.h

+20 −0
Original line number Diff line number Diff line
@@ -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