From 79f5be006ec88665c7da2680e89bd0200d4426be Mon Sep 17 00:00:00 2001
From: Watson Zeng <zhiwei@synopsys.com>
Date: Tue, 29 Jun 2021 14:57:46 +0800
Subject: [PATCH] boards: arc: hsdk: add creg_gpio driver support

Add creg_gpio driver support for hsdk board.

Signed-off-by: Watson Zeng <zhiwei@synopsys.com>
---
 boards/arc/hsdk/Kconfig.defconfig |  3 +++
 boards/arc/hsdk/hsdk.dtsi         | 14 ++++++++++++++
 dts/arc/arc_hsdk.dtsi             | 15 +++++++++++++++
 3 files changed, 32 insertions(+)

diff --git a/boards/arc/hsdk/Kconfig.defconfig b/boards/arc/hsdk/Kconfig.defconfig
index 6be6ecdaea9..967aa77e7e1 100644
--- a/boards/arc/hsdk/Kconfig.defconfig
+++ b/boards/arc/hsdk/Kconfig.defconfig
@@ -39,6 +39,9 @@ config SPI_DW_ARC_AUX_REGS
 config SPI_DW_ACCESS_WORD_ONLY
 	default y
 
+config GPIO_SNPS_CREG
+	default y
+
 endif # SPI_DW
 
 endif # SPI
diff --git a/boards/arc/hsdk/hsdk.dtsi b/boards/arc/hsdk/hsdk.dtsi
index 3575ab320e4..f833ed877bc 100644
--- a/boards/arc/hsdk/hsdk.dtsi
+++ b/boards/arc/hsdk/hsdk.dtsi
@@ -86,19 +86,33 @@ arduino_spi: &spi2 {};
 	interrupts = <56 1>;
 };
 
+&creg_gpio {
+	status = "okay";
+};
+
 &spi0 {
 	status = "okay";
 	clock-frequency = <33333333>;
+	cs-gpios = <&creg_gpio 0 GPIO_ACTIVE_HIGH>,
+			   <&creg_gpio 1 GPIO_ACTIVE_HIGH>,
+			   <&creg_gpio 2 GPIO_ACTIVE_HIGH>,
+			   <&creg_gpio 3 GPIO_ACTIVE_HIGH>;
 };
 
 &spi1 {
 	status = "okay";
 	clock-frequency = <33333333>;
+	cs-gpios = <&creg_gpio 4 GPIO_ACTIVE_HIGH>,
+			   <&creg_gpio 5 GPIO_ACTIVE_HIGH>,
+			   <&creg_gpio 6 GPIO_ACTIVE_HIGH>;
 };
 
 &spi2 {
 	status = "okay";
 	clock-frequency = <33333333>;
+	cs-gpios = <&creg_gpio 8 GPIO_ACTIVE_HIGH>,
+			   <&creg_gpio 9 GPIO_ACTIVE_HIGH>,
+			   <&creg_gpio 10 GPIO_ACTIVE_HIGH>;
 };
 
 &i2c0 {
diff --git a/dts/arc/arc_hsdk.dtsi b/dts/arc/arc_hsdk.dtsi
index 8c6f4aa78b4..147aefa88cd 100644
--- a/dts/arc/arc_hsdk.dtsi
+++ b/dts/arc/arc_hsdk.dtsi
@@ -122,6 +122,21 @@
 			status = "disabled";
 		};
 
+		creg_gpio: creg_gpio@f00014b0 {
+			compatible = "snps,creg-gpio";
+			reg = <0xf00014b0 0x4>;
+			ngpios = <12>;
+			label = "CREG_GPIO";
+			bit_per_gpio = <2>;
+			off_val = <0>;
+			on_val = <2>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			status = "disabled";
+		};
+
 		i2c0: i2c@f0023000 {
 			compatible = "snps,designware-i2c";
 			clock-frequency = <I2C_BITRATE_STANDARD>;