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regulator: pfuze100-regulator: add coin support
Add support for PF0200 coin cell/super capacitor charger which works as a current limited voltage source via the LICELL pin. When VIN goes below a certain threshold LICELL is used to provide power for VSNVS which is usually used to hold up secure non-volatile storage and the real-time clock on the SoC. Signed-off-by: George McCollister <george.mccollister@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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3 changed files with 32 additions and 1 deletions
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@ -13,7 +13,7 @@ Required child node:
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--PFUZE100
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sw1ab,sw1c,sw2,sw3a,sw3b,sw4,swbst,vsnvs,vrefddr,vgen1~vgen6
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--PFUZE200
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sw1ab,sw2,sw3a,sw3b,swbst,vsnvs,vrefddr,vgen1~vgen6
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sw1ab,sw2,sw3a,sw3b,swbst,vsnvs,vrefddr,vgen1~vgen6,coin
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--PFUZE3000
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sw1a,sw1b,sw2,sw3,swbst,vsnvs,vrefddr,vldo1,vldo2,vccsd,v33,vldo3,vldo4
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@ -205,6 +205,12 @@ Example 2: PFUZE200
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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coin_reg: coin {
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regulator-min-microvolt = <2500000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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};
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};
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@ -40,6 +40,7 @@
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#define PFUZE100_REVID 0x3
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#define PFUZE100_FABID 0x4
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#define PFUZE100_COINVOL 0x1a
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#define PFUZE100_SW1ABVOL 0x20
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#define PFUZE100_SW1CVOL 0x2e
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#define PFUZE100_SW2VOL 0x35
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@ -81,6 +82,10 @@ static const int pfuze100_vsnvs[] = {
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1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000,
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};
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static const int pfuze100_coin[] = {
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2500000, 2700000, 2800000, 2900000, 3000000, 3100000, 3200000, 3300000,
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};
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static const int pfuze3000_sw2lo[] = {
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1500000, 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000,
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};
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@ -230,6 +235,23 @@ static struct regulator_ops pfuze100_swb_regulator_ops = {
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.stby_mask = 0x20, \
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}
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#define PFUZE100_COIN_REG(_chip, _name, base, mask, voltages) \
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[_chip ## _ ## _name] = { \
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.desc = { \
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.name = #_name, \
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.n_voltages = ARRAY_SIZE(voltages), \
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.ops = &pfuze100_swb_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = _chip ## _ ## _name, \
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.owner = THIS_MODULE, \
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.volt_table = voltages, \
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.vsel_reg = (base), \
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.vsel_mask = (mask), \
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.enable_reg = (base), \
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.enable_mask = 0x8, \
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}, \
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}
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#define PFUZE3000_VCC_REG(_chip, _name, base, min, max, step) { \
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.desc = { \
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.name = #_name, \
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@ -317,6 +339,7 @@ static struct pfuze_regulator pfuze200_regulators[] = {
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PFUZE100_VGEN_REG(PFUZE200, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
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PFUZE100_VGEN_REG(PFUZE200, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
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PFUZE100_VGEN_REG(PFUZE200, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
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PFUZE100_COIN_REG(PFUZE200, COIN, PFUZE100_COINVOL, 0x7, pfuze100_coin),
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};
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static struct pfuze_regulator pfuze3000_regulators[] = {
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@ -371,6 +394,7 @@ static struct of_regulator_match pfuze200_matches[] = {
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{ .name = "vgen4", },
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{ .name = "vgen5", },
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{ .name = "vgen6", },
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{ .name = "coin", },
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};
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/* PFUZE3000 */
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@ -48,6 +48,7 @@
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#define PFUZE200_VGEN4 10
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#define PFUZE200_VGEN5 11
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#define PFUZE200_VGEN6 12
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#define PFUZE200_COIN 13
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#define PFUZE3000_SW1A 0
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#define PFUZE3000_SW1B 1
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