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Commit a1a230be authored by Amit Nischal's avatar Amit Nischal Committed by Gerrit - the friendly Code Review server
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clk: qcom: Add handoff support for voter rpm clocks 



Some voter rpm clocks are critical for system booting and should not be
gated until a unused clock tree late_init level.
So add support for handoff functionality for system critical clocks by
using CLK_ENABLE_HAND_OFF flag.

Change-Id: I9f9674a25fc5f7a2bc9b5672b00716b82223b06b
Signed-off-by: default avatarAmit Nischal <anischal@codeaurora.org>
Signed-off-by: default avatarTaniya Das <tdas@codeaurora.org>
parent 70fe4cf2

drivers/clk/qcom/clk-voter.c

+11 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2017, The Linux Foundation. All rights reserved.

 * Copyright (c) 2017, 2019, The Linux Foundation. All rights reserved.

 */



#include <linux/clk.h>
@@ -126,6 +126,16 @@ static unsigned long voter_clk_recalc_rate(struct clk_hw *hw, 
	return v->rate;

}



int voter_clk_handoff(struct clk_hw *hw)

{

	struct clk_voter *v = to_clk_voter(hw);



	v->enabled = true;



	return 0;

}

EXPORT_SYMBOL(voter_clk_handoff);



const struct clk_ops clk_ops_voter = {

	.prepare = voter_clk_prepare,

	.unprepare = voter_clk_unprepare,

drivers/clk/qcom/clk-voter.h

+4 −1
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2017, The Linux Foundation. All rights reserved.

 * Copyright (c) 2017, 2019, The Linux Foundation. All rights reserved.

 */



#ifndef __QCOM_CLK_VOTER_H__
@@ -27,6 +27,7 @@ extern const struct clk_ops clk_ops_voter; 
		.hw.init = &(struct clk_init_data){			   \

			.ops = &clk_ops_voter,				   \

			.name = #clk_name,				   \

			.flags = CLK_ENABLE_HAND_OFF,			   \

			.parent_names = (const char *[]){ #_parent_name }, \

			.num_parents = 1,				   \

		},							   \
@@ -38,4 +39,6 @@ extern const struct clk_ops clk_ops_voter; 
#define DEFINE_CLK_BRANCH_VOTER(clk_name, _parent_name) \

	 __DEFINE_CLK_VOTER(clk_name, _parent_name, 1000, 1)



int voter_clk_handoff(struct clk_hw *hw);



#endif