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Commit 815e2bf7 authored by Umang Agrawal's avatar Umang Agrawal Committed by Harry Yang
Browse files

power: smb1390: Configure SMB1390 to improve ILIM accuracy 



Configure WIN_OV to 10V and VOUT tracking value to 1V to
improve the accuracy of ILIM IRQ trigger.

Change-Id: Ifadda6faea6acfbf4fe283aebb25fb4c5118087a
Signed-off-by: default avatarUmang Agrawal <uagrawal@codeaurora.org>
parent e86137b2

drivers/power/supply/qcom/smb1390-charger.c

+28 −0
Original line number Diff line number Diff line
@@ -67,6 +67,15 @@ 
#define CORE_FTRIM_ILIM_REG		0x1030

#define CFG_ILIM_MASK			GENMASK(4, 0)



#define CORE_FTRIM_LVL_REG		0x1033

#define CFG_WIN_HI_MASK			GENMASK(3, 2)

#define WIN_OV_LVL_1000MV		0x08



#define CORE_FTRIM_MISC_REG		0x1034

#define TR_WIN_1P5X_BIT			BIT(0)

#define WINDOW_DETECTION_DELTA_X1P0	0

#define WINDOW_DETECTION_DELTA_X1P5	1



#define CP_VOTER	"CP_VOTER"

#define USER_VOTER	"USER_VOTER"

#define ILIM_VOTER	"ILIM_VOTER"
@@ -550,11 +559,30 @@ static void smb1390_destroy_votables(struct smb1390 *chip) 


static int smb1390_init_hw(struct smb1390 *chip)

{

	int rc;



	/*

	 * charge pump is initially disabled; this indirectly votes to allow

	 * traditional parallel charging if present

	 */

	vote(chip->disable_votable, USER_VOTER, true, 0);



	/*

	 * Improve ILIM accuracy:

	 *  - Configure window (Vin - 2Vout) OV level to 1000mV

	 *  - Configure VOUT tracking value to 1.0

	 */

	rc = smb1390_masked_write(chip, CORE_FTRIM_LVL_REG,

			CFG_WIN_HI_MASK, WIN_OV_LVL_1000MV);

	if (rc < 0)

		return rc;



	rc = smb1390_masked_write(chip, CORE_FTRIM_MISC_REG,

			TR_WIN_1P5X_BIT, WINDOW_DETECTION_DELTA_X1P0);

	if (rc < 0)

		return rc;





	return 0;

}