commit 73b0795f4489b5c1d10609dbff7b047c014e091b
author Jason Hsu <jasonchhsu@google.com> Mon Nov 30 15:37:11 2020 +0800
committer Harrison Lingren <hlingren@google.com> Mon Nov 30 18:01:59 2020 +0000
tree 7deaa4359591ac16ec0685cba7975a2087dec7c0
parent 64f65a9c744d491b07a00358c749ce95ae5dd7b7

arm64/dts: bramble: fix speaker noise issue on some devices

refine the gpio drive strength
QUIN TDM gpios(gpio6/gpio7/gpio8/gpio9) from 8mA to 16mA

Bug: 172900281
Test: Hardware verified

Signed-off-by: Jason Hsu <jasonchhsu@google.com>
Change-Id: I858ad463c125e6f316f3d4a35325a391e749ae18
(cherry picked from commit 6669f2684a46b4402aa37adb4cf9eb4f8dc43bd6)

arch/arm64/boot/dts/google/lito-bramble-audio.dtsi

diff --git a/arch/arm64/boot/dts/google/lito-bramble-audio.dtsi b/arch/arm64/boot/dts/google/lito-bramble-audio.dtsi
index e3e2d08..3d80909 100644
--- a/arch/arm64/boot/dts/google/lito-bramble-audio.dtsi
+++ b/arch/arm64/boot/dts/google/lito-bramble-audio.dtsi
@@ -14,3 +14,26 @@
 	qcom,model = "sm7250-bolero-snd-card";
 };
 
+&lpi_i2s1_sck_active { /* gpio6 */
+	config {
+		drive-strength = <16>; /*16mA*/
+	};
+};
+
+&lpi_i2s1_ws_active { /* gpio7 */
+	config {
+		drive-strength = <16>; /*16mA*/
+	};
+};
+
+&lpi_i2s1_sd0_active { /* gpio8 */
+	config {
+		drive-strength = <16>; /*16mA*/
+	};
+};
+
+&lpi_i2s1_sd1_active { /* gpio9 */
+	config {
+		drive-strength = <16>; /*16mA*/
+	};
+};