[PATCH v2] arm64: dts: qcom: sc7280-herobrine: Audio codec wants 1.8V, not 1.62V

[Douglas Anderson]

The L2C rail on herobrine boards is intended to go to the audio
codec. Let's override the 1.62V specified in the qcard.dtsi file to be
1.8V.

Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---

Changes in v2:
- Adjust Qcard regulator override section heading

 arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
index 10de5e104b4f..d58045dd7334 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
@@ -308,7 +308,10 @@ keyboard_backlight: keyboard-backlight {
 };
 
 /*
- * BOARD-LOCAL NAMES FOR REGULATORS THAT CONNECT TO QCARD
+ * ADJUSTMENTS TO QCARD REGULATORS
+ *
+ * Mostly this is just board-local names for regulators that come from
+ * Qcard, but this also has some minor regulator overrides.
  *
  * Names are only listed here if regulators go somewhere other than a
  * testpoint.
@@ -352,6 +355,16 @@ keyboard_backlight: keyboard-backlight {
 ts_avdd:      &pp3300_left_in_mlb {};
 vreg_edp_3p3: &pp3300_left_in_mlb {};
 
+/* Regulator overrides from Qcard */
+
+/*
+ * Herobrine boards only use l2c to power an external audio codec (like
+ * alc5682) and we want that to be at 1.8V, not at some slightly lower voltage.
+ */
+&vreg_l2c_1p8 {
+	regulator-min-microvolt = <1800000>;
+};
+
 /* ADDITIONS TO NODES DEFINED IN PARENT DEVICE TREE FILES */
 
 ap_sar_sensor_i2c: &i2c1 {
-- 
2.35.1.1178.g4f1659d476-goog