* [PATCH] arm64: dts: add uDPU i2c bus recovery
@ 2020-05-13 9:33 Russell King
0 siblings, 0 replies; only message in thread
From: Russell King @ 2020-05-13 9:33 UTC (permalink / raw)
To: linux-i2c
Cc: Andrew Lunn, devicetree, Gregory Clement, Jason Cooper,
linux-arm-kernel, Rob Herring, Sebastian Hesselbarth,
Vladimir Vid
Add support for bus recovery for the Armada 3720 based uDPU.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
.../boot/dts/marvell/armada-3720-uDPU.dts | 22 +++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts b/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
index 7eb6c1796cef..95d46e8d081c 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
@@ -117,18 +117,36 @@
};
};
+&pinctrl_nb {
+ i2c1_recovery_pins: i2c1-recovery-pins {
+ groups = "i2c1";
+ function = "gpio";
+ };
+
+ i2c2_recovery_pins: i2c2-recovery-pins {
+ groups = "i2c2";
+ function = "gpio";
+ };
+};
+
&i2c0 {
status = "okay";
- pinctrl-names = "default";
+ pinctrl-names = "default", "recovery";
pinctrl-0 = <&i2c1_pins>;
+ pinctrl-1 = <&i2c1_recovery_pins>;
/delete-property/mrvl,i2c-fast-mode;
+ scl-gpios = <&gpionb 0 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ sda-gpios = <&gpionb 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
};
&i2c1 {
status = "okay";
- pinctrl-names = "default";
+ pinctrl-names = "default", "recovery";
pinctrl-0 = <&i2c2_pins>;
+ pinctrl-1 = <&i2c2_recovery_pins>;
/delete-property/mrvl,i2c-fast-mode;
+ scl-gpios = <&gpionb 2 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ sda-gpios = <&gpionb 3 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
lm75@48 {
status = "okay";
--
2.20.1
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