commit 0bf47d7669487e6dfb414c01d441c3f78a40f675
author Tim Harvey <tharvey@gateworks.com> Fri Jun 11 12:46:23 2021 -0700
committer Stefano Babic <sbabic@denx.de> Sat Jul 10 16:53:33 2021 +0200
tree 8d0f1705bbcba78be787a33c6c14ad76eaea97b7
parent 5a1760b4a16f203e6b7102c943679dc2bb0e9b9c

imx: ventana: put PFUZ100 regulators in continuous mode

In the default 'auto' mode regulators that are very lightly loaded
can be put in PFM mode and fail to regulator properly. Switching them
to always use continuous PWM mode has a neglibable affect on system
power and garuntees proper regulation under lightly loaded circumstances.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

board/gateworks/gw_ventana/common.c

diff --git a/board/gateworks/gw_ventana/common.c b/board/gateworks/gw_ventana/common.c
index 9f5f20f..b5a0162 100644
--- a/board/gateworks/gw_ventana/common.c
+++ b/board/gateworks/gw_ventana/common.c
@@ -1596,6 +1596,32 @@
 				pmic_reg_write(p, PFUZE100_VGEN6VOL, reg);
 			}
 		}
+
+		/* put all switchers in continuous mode */
+		pmic_reg_read(p, PFUZE100_SW1ABMODE, &reg);
+		reg &= ~(SW_MODE_MASK);
+		reg |= PWM_PWM;
+		pmic_reg_write(p, PFUZE100_SW1ABMODE, reg);
+
+		pmic_reg_read(p, PFUZE100_SW2MODE, &reg);
+		reg &= ~(SW_MODE_MASK);
+		reg |= PWM_PWM;
+		pmic_reg_write(p, PFUZE100_SW2MODE, reg);
+
+		pmic_reg_read(p, PFUZE100_SW3AMODE, &reg);
+		reg &= ~(SW_MODE_MASK);
+		reg |= PWM_PWM;
+		pmic_reg_write(p, PFUZE100_SW3AMODE, reg);
+
+		pmic_reg_read(p, PFUZE100_SW3BMODE, &reg);
+		reg &= ~(SW_MODE_MASK);
+		reg |= PWM_PWM;
+		pmic_reg_write(p, PFUZE100_SW3BMODE, reg);
+
+		pmic_reg_read(p, PFUZE100_SW4MODE, &reg);
+		reg &= ~(SW_MODE_MASK);
+		reg |= PWM_PWM;
+		pmic_reg_write(p, PFUZE100_SW4MODE, reg);
 	}
 
 	/* configure LTC3676 PMIC */