[PATCH v2 08/11] power: supply: max17042: support standard shunt-resistor-micro-ohms DT property

["André Draszik" <andre.draszik@linaro.org>]

shunt-resistor-micro-ohms is a standard property used to describe the
value of a shunt resistor required when measuring currents. Standard
properties should be used instead of vendor-specific ones of similar
intention when possible.

Try to read it from DT, and fall back to the vendor-specific property
maxim,rsns-microohm if unsuccessful for compatibility with existing
DTs.

Signed-off-by: André Draszik <andre.draszik@linaro.org>
---
 drivers/power/supply/max17042_battery.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c
index bae0670e2496..823533ea5a17 100644
--- a/drivers/power/supply/max17042_battery.c
+++ b/drivers/power/supply/max17042_battery.c
@@ -929,8 +929,12 @@ max17042_get_of_pdata(struct max17042_chip *chip)
 	/*
 	 * Require current sense resistor value to be specified for
 	 * current-sense functionality to be enabled at all.
+	 * maxim,rsns-microohm is the property name used by older DTs and kept
+	 * for compatibility.
 	 */
-	if (of_property_read_u32(np, "maxim,rsns-microohm", &prop) == 0) {
+	if ((of_property_read_u32(np, "shunt-resistor-micro-ohms",
+				  &prop) == 0) ||
+	    (of_property_read_u32(np, "maxim,rsns-microohm", &prop) == 0)) {
 		pdata->r_sns = prop;
 		pdata->enable_current_sense = true;
 	}

-- 
2.53.0.473.g4a7958ca14-goog