From: Christian Hohnstaedt <Christian.Hohnstaedt@wago.com>
To: Lee Jones <lee.jones@linaro.org>
Cc: Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
Rob Herring <robh+dt@kernel.org>,
"Tony Lindgren" <tony@atomide.com>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-omap@vger.kernel.org>
Subject: [PATCH 2/2] mfd: tps65218.c: Add input voltage options
Date: Tue, 18 Dec 2018 09:05:56 +0100 [thread overview]
Message-ID: <1545120356-7749-3-git-send-email-Christian.Hohnstaedt@wago.com> (raw)
In-Reply-To: <1545120356-7749-1-git-send-email-Christian.Hohnstaedt@wago.com>
These options apply to all regulators in this chip.
strict-supply-voltage:
Set STRICT flag in CONFIG1
under-voltage-limit:
Select 2.75, 2.95, 3.25 or 3.35 V UVLO in CONFIG1
under-voltage-hysteresis:
Select 200mV or 400mV UVLOHYS in CONFIG2
Signed-off-by: Christian Hohnstaedt <Christian.Hohnstaedt@wago.com>
---
drivers/mfd/tps65218.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/drivers/mfd/tps65218.c b/drivers/mfd/tps65218.c
index 8bcdecf..f5e559b 100644
--- a/drivers/mfd/tps65218.c
+++ b/drivers/mfd/tps65218.c
@@ -211,6 +211,50 @@ static const struct of_device_id of_tps65218_match_table[] = {
};
MODULE_DEVICE_TABLE(of, of_tps65218_match_table);
+static void tps65218_options(struct tps65218 *tps)
+{
+ struct device *dev = tps->dev;
+ struct device_node *np = dev->of_node;
+ u32 pval;
+
+ if (!of_property_read_u32(np, "strict-supply-voltage", &pval)) {
+ tps65218_update_bits(tps, TPS65218_REG_CONFIG1,
+ TPS65218_CONFIG1_STRICT,
+ pval ? TPS65218_CONFIG1_STRICT : 0,
+ TPS65218_PROTECT_L1);
+ dev_dbg(dev, "tps65218 strict-supply-voltage: %d\n", pval);
+ }
+ if (!of_property_read_u32(np, "under-voltage-hysteresis", &pval)) {
+ if (pval != 400000 && pval != 200000) {
+ dev_err(dev,
+ "under-voltage-hysteresis must be %d or %d\n",
+ 200000, 400000);
+ } else {
+ tps65218_update_bits(tps, TPS65218_REG_CONFIG2,
+ TPS65218_CONFIG2_UVLOHYS,
+ pval == 400000 ? TPS65218_CONFIG2_UVLOHYS : 0,
+ TPS65218_PROTECT_L1);
+ }
+ dev_dbg(dev, "tps65218 under-voltage-hysteresis: %d\n", pval);
+ }
+ if (!of_property_read_u32(np, "under-voltage-limit", &pval)) {
+ int i, vals[] = { 275, 295, 325, 335 };
+
+ for (i = 0; i < ARRAY_SIZE(vals); i++) {
+ if (pval == vals[i] * 10000)
+ break;
+ }
+ if (i < ARRAY_SIZE(vals)) {
+ tps65218_update_bits(tps, TPS65218_REG_CONFIG1,
+ TPS65218_CONFIG1_UVLO_MASK, i,
+ TPS65218_PROTECT_L1);
+ } else {
+ dev_err(dev, "Invalid under-voltage-limit: %d\n", pval);
+ }
+ dev_dbg(dev, "tps65218 under-voltage-limit: %d=%d\n", pval, i);
+ }
+}
+
static int tps65218_probe(struct i2c_client *client,
const struct i2c_device_id *ids)
{
@@ -249,6 +293,8 @@ static int tps65218_probe(struct i2c_client *client,
tps->rev = chipid & TPS65218_CHIPID_REV_MASK;
+ tps65218_options(tps);
+
ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65218_cells,
ARRAY_SIZE(tps65218_cells), NULL, 0,
regmap_irq_get_domain(tps->irq_data));
--
2.7.4
next prev parent reply other threads:[~2018-12-18 8:06 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-18 8:05 [PATCH 0/2] Add input voltage configuration for TPS65218 Christian Hohnstaedt
2018-12-18 8:05 ` [PATCH 1/2] dt-bindings: regulator: extend tps65218 bindings Christian Hohnstaedt
2018-12-24 9:15 ` J, KEERTHY
2018-12-28 22:51 ` Rob Herring
2018-12-18 8:05 ` Christian Hohnstaedt [this message]
2018-12-21 11:01 ` [PATCH 2/2] mfd: tps65218.c: Add input voltage options Lee Jones
2018-12-23 16:40 ` Tony Lindgren
2018-12-24 6:32 ` Lee Jones
2018-12-24 9:01 ` J, KEERTHY
2018-12-24 9:38 ` J, KEERTHY
2019-01-03 13:47 ` [PATCH v2 0/2] Add input voltage configuration for TPS65218 Christian Hohnstaedt
2019-01-14 8:16 ` [PATCH v3 " Christian Hohnstaedt
2019-01-14 8:16 ` [PATCH v3 1/2] dt-bindings: regulator: extend tps65218 bindings Christian Hohnstaedt
2019-01-14 8:16 ` [PATCH v3 2/2] mfd: tps65218.c: Add input voltage options Christian Hohnstaedt
2019-01-16 14:13 ` Lee Jones
2019-01-17 5:54 ` Christian Hohnstaedt
2019-01-17 8:07 ` Lee Jones
2019-01-17 8:08 ` Lee Jones
2019-01-03 13:47 ` [PATCH v2 1/2] dt-bindings: regulator: extend tps65218 bindings Christian Hohnstaedt
2019-01-11 16:17 ` Rob Herring
2019-01-03 13:47 ` [PATCH v2 2/2] mfd: tps65218.c: Add input voltage options Christian Hohnstaedt
2019-01-14 6:38 ` Keerthy
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