From: Stefan Eichenberger <stefan.eichenberger@xxxxxxxxxxx>
By default we expect all i2c nodes to be single-master, we do not have
any module or carrier board that uses multi-master mode on any i2c
controller. With this property set, we benefit from optimisations made
exclusively for single-masters.
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@xxxxxxxxxxx>
---
arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
index 5fa3959141911..95d5d2333ca1e 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
@@ -367,6 +367,7 @@ &i2c1 {
pinctrl-1 = <&pinctrl_i2c1_gpio>;
scl-gpios = <&gpio5 14 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
sda-gpios = <&gpio5 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ single-master;
status = "okay";
pca9450: pmic@25 {
@@ -561,6 +562,7 @@ &i2c2 {
pinctrl-1 = <&pinctrl_i2c2_gpio>;
scl-gpios = <&gpio5 16 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
sda-gpios = <&gpio5 17 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ single-master;
status = "disabled";
};
@@ -574,6 +576,7 @@ &i2c3 {
pinctrl-1 = <&pinctrl_i2c3_gpio>;
scl-gpios = <&gpio5 18 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
sda-gpios = <&gpio5 19 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ single-master;
};
/* Verdin I2C_1 */
@@ -584,6 +587,7 @@ &i2c4 {
pinctrl-1 = <&pinctrl_i2c4_gpio>;
scl-gpios = <&gpio5 20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
sda-gpios = <&gpio5 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ single-master;
gpio_expander_21: gpio-expander@21 {
compatible = "nxp,pcal6416";
--
2.43.0
