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Don't try to re-initialize already preseted regulator.

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Don't set initial voltage for regulators having their voltage already
in allowed range. As side effect of this change, we don't try to set
initial voltage for fixed voltage regulators - these don't have impemented
voltage set  method so their initialization has always failed.

MFC after:	3 weeks
This commit is contained in:
Michal Meloun 2020-04-29 13:45:21 +00:00
parent 4c291cb857
commit 726122cfda
1 changed files with 10 additions and 1 deletions
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11
sys/arm64/rockchip/rk805.c
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@ -105,6 +105,7 @@ struct rk805_softc {
static int rk805_regnode_status(struct regnode *regnode, int *status);
static int rk805_regnode_set_voltage(struct regnode *regnode, int min_uvolt,
int max_uvolt, int *udelay);
static int rk805_regnode_get_voltage(struct regnode *regnode, int *uvolt);
static struct rk805_regdef rk805_regdefs[] = {
{
@ -366,13 +367,21 @@ rk805_regnode_init(struct regnode *regnode)
{
struct rk805_reg_sc *sc;
struct regnode_std_param *param;
int rv, udelay, status;
int rv, udelay, uvolt, status;
sc = regnode_get_softc(regnode);
dprintf(sc, "Regulator %s init called\n", sc->def->name);
param = regnode_get_stdparam(regnode);
if (param->min_uvolt == 0)
return (0);
/* Check that the regulator is preset to the correct voltage */
rv = rk805_regnode_get_voltage(regnode, &uvolt);
if (rv != 0)
return(rv);
if (uvolt >= param->min_uvolt && uvolt <= param->max_uvolt)
return(0);
/*
* Set the regulator at the correct voltage if it is not enabled.
* Do not enable it, this is will be done either by a