[PATCH v3 5/5] ARM: dts: aspeed: santabarbara: Add leak cable present IO expander

[Fred Chen]

Add a pca9555 GPIO expander (0x22) on i2c6/i2c8/i2c10/i2c13, one per
module board, to expose the PRSNT_MODULE[0-3]_LEAK_CABLE_R_N line used
to detect whether the module's leak-detection cable is plugged
in.

Signed-off-by: Fred Chen <fredchen.openbmc at gmail.com>
---
 .../aspeed-bmc-facebook-santabarbara.dts      | 56 ++++++++++++++++++-
 1 file changed, 54 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts
index 3d35a5a74104..ca5bd805d975 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts
@@ -641,6 +641,19 @@ gpio at 74 {
 &i2c6 {
 	status = "okay";
 
+	gpio at 22 {
+		compatible = "nxp,pca9555";
+		reg = <0x22>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&sgpiom0>;
+		interrupts = <150 IRQ_TYPE_LEVEL_LOW>;
+		gpio-line-names =
+			"PRSNT_MODULE0_LEAK_CABLE_R_N","",
+			"","","","","","",
+			"","","","","","","","";
+	};
+
 	// Rainbow0 FRU
 	eeprom at 52 {
 		compatible = "atmel,24c256";
@@ -866,6 +879,19 @@ ipmb at 10 {
 &i2c8 {
 	status = "okay";
 
+	gpio at 22 {
+		compatible = "nxp,pca9555";
+		reg = <0x22>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&sgpiom0>;
+		interrupts = <154 IRQ_TYPE_LEVEL_LOW>;
+		gpio-line-names =
+			"PRSNT_MODULE2_LEAK_CABLE_R_N","",
+			"","","","","","",
+			"","","","","","","","";
+	};
+
 	// Rainbow2 FRU
 	eeprom at 52 {
 		compatible = "atmel,24c256";
@@ -1106,7 +1132,20 @@ eeprom at 56 {
 &i2c10 {
 	status = "okay";
 
-	// Rainbow3 FRU
+	gpio at 22 {
+		compatible = "nxp,pca9555";
+		reg = <0x22>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&sgpiom0>;
+		interrupts = <158 IRQ_TYPE_LEVEL_LOW>;
+		gpio-line-names =
+			"PRSNT_MODULE1_LEAK_CABLE_R_N","",
+			"","","","","","",
+			"","","","","","","","";
+	};
+
+	// Rainbow1 FRU
 	eeprom at 52 {
 		compatible = "atmel,24c256";
 		reg = <0x52>;
@@ -1588,7 +1627,20 @@ i2c12mux0ch7: i2c at 7 {
 &i2c13 {
 	status = "okay";
 
-	// Rainbow1 FRU
+	gpio at 22 {
+		compatible = "nxp,pca9555";
+		reg = <0x22>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&sgpiom0>;
+		interrupts = <162 IRQ_TYPE_LEVEL_LOW>;
+		gpio-line-names =
+			"PRSNT_MODULE3_LEAK_CABLE_R_N","",
+			"","","","","","",
+			"","","","","","","","";
+	};
+
+	// Rainbow3 FRU
 	eeprom at 52 {
 		compatible = "atmel,24c256";
 		reg = <0x52>;
-- 
2.52.0