From 1d15c1654f8c438694a8680a4faa6e5f77abd507 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Fri, 29 Apr 2016 15:19:36 +0530 Subject: [PATCH] drm/msm/edp: Drop regulator_set_voltage call The eDP driver tries to set a fixed voltage for one of its regulators(vdda) before enabling it. This shouldn't be done by the driver, the voltage constraints should be specified on the regulator via DT and managed by the regulator core. A driver should call regulator_set_voltage only if it needs to change the voltage during runtime. Drop the regulator_set_voltage call. Mention in a comment the voltage that the regulator expects. Signed-off-by: Archit Taneja Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/edp/edp_ctrl.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/drivers/gpu/drm/msm/edp/edp_ctrl.c b/drivers/gpu/drm/msm/edp/edp_ctrl.c index 4f7457b14dcc..149bfe7ddd82 100644 --- a/drivers/gpu/drm/msm/edp/edp_ctrl.c +++ b/drivers/gpu/drm/msm/edp/edp_ctrl.c @@ -21,8 +21,6 @@ #include "edp.h" #include "edp.xml.h" -#define VDDA_MIN_UV 1800000 /* uV units */ -#define VDDA_MAX_UV 1800000 /* uV units */ #define VDDA_UA_ON_LOAD 100000 /* uA units */ #define VDDA_UA_OFF_LOAD 100 /* uA units */ @@ -67,7 +65,7 @@ struct edp_ctrl { void __iomem *base; /* regulators */ - struct regulator *vdda_vreg; + struct regulator *vdda_vreg; /* 1.8 V */ struct regulator *lvl_vreg; /* clocks */ @@ -329,12 +327,6 @@ static int edp_regulator_enable(struct edp_ctrl *ctrl) { int ret; - ret = regulator_set_voltage(ctrl->vdda_vreg, VDDA_MIN_UV, VDDA_MAX_UV); - if (ret) { - pr_err("%s:vdda_vreg set_voltage failed, %d\n", __func__, ret); - goto vdda_set_fail; - } - ret = regulator_set_load(ctrl->vdda_vreg, VDDA_UA_ON_LOAD); if (ret < 0) { pr_err("%s: vdda_vreg set regulator mode failed.\n", __func__); -- 2.39.5