[PATCH] dt-bindings: mfd: bd71828: Use charger resistor in mOhm instead of MOhm

From: Andreas Kemnade
Date: Tue Oct 29 2024 - 07:12:55 EST


Apparently there was some confusion regarding milliohm vs. megaohm.
(m/M). Use microohms to be able to properly specify the charger
resistor like other drivers do. This is not used yet by mainline code
yet. Specify a current sense resistor in milliohms range rathes then
megaohms range in the examples.

CC: sre@xxxxxxxxxx
Reported-by: Matti Vaittinen <mazziesaccount@xxxxxxxxx>
Closes: https://lore.kernel.org/imx/6dcd724a-a55c-4cba-a45b-21e76b1973b0@xxxxxxxxx/T/#mf590875a9f4d3955cd1041d7196ff0c65c0a7e9d
Signed-off-by: Andreas Kemnade <andreas@xxxxxxxxxxxx>
---
.../devicetree/bindings/mfd/rohm,bd71828-pmic.yaml | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
index fa17686a64f7..09e7d68e92bf 100644
--- a/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
+++ b/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
@@ -55,14 +55,15 @@ properties:
minimum: 0
maximum: 1

- rohm,charger-sense-resistor-ohms:
- minimum: 10000000
- maximum: 50000000
+ rohm,charger-sense-resistor-micro-ohms:
+ minimum: 10000
+ maximum: 50000
+ default: 30000
description: |
BD71827 and BD71828 have SAR ADC for measuring charging currents.
External sense resistor (RSENSE in data sheet) should be used. If some
- other but 30MOhm resistor is used the resistance value should be given
- here in Ohms.
+ other but 30mOhm resistor is used the resistance value should be given
+ here in microohms.

regulators:
$ref: /schemas/regulator/rohm,bd71828-regulator.yaml
@@ -114,7 +115,7 @@ examples:
#gpio-cells = <2>;
gpio-reserved-ranges = <0 1>, <2 1>;

- rohm,charger-sense-resistor-ohms = <10000000>;
+ rohm,charger-sense-resistor-micro-ohms = <10000>;

regulators {
buck1: BUCK1 {
--
2.39.5