[PATCH] ARM: k3: add syscon-reboot-mode

[Sascha Hauer <s.hauer@pengutronix.de>]

This adds reboot-mode support for the AM625 and AM62L SoCs.

We only add usbdfu, emmc and nand for now. Most other boot modes require
additional board specific configuration in bit[9-7], so these have to be
added in a board specific dts. Also we only touch the primary boot mode
and leave the secondary boot mode untouched.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/dts/k3-am625.dtsi         | 16 ++++++++++++++++
 arch/arm/dts/k3-am62l-barebox.dtsi | 16 ++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/arch/arm/dts/k3-am625.dtsi b/arch/arm/dts/k3-am625.dtsi
index bb61586fe2..2aa77ab2d5 100644
--- a/arch/arm/dts/k3-am625.dtsi
+++ b/arch/arm/dts/k3-am625.dtsi
@@ -9,6 +9,22 @@ chosen {
 	};
 };
 
+&wkup_conf {
+	reboot-mode-syscon@10030 {
+		compatible = "syscon", "simple-mfd";
+		reg = <0x10030 0x4>;
+
+		reboot_mode: reboot-mode {
+			compatible = "syscon-reboot-mode";
+			offset = <0x0>;
+			mask = <0x3f8>;
+			mode-usbdfu = <0x250>;
+			mode-emmc = <0x48>;
+			mode-nand = <0x58>;
+		};
+	};
+};
+
 &phy_gmii_sel {
 	compatible = "ti,am654-phy-gmii-sel", "syscon";
 };
diff --git a/arch/arm/dts/k3-am62l-barebox.dtsi b/arch/arm/dts/k3-am62l-barebox.dtsi
index b287ca5b83..34bf42c01f 100644
--- a/arch/arm/dts/k3-am62l-barebox.dtsi
+++ b/arch/arm/dts/k3-am62l-barebox.dtsi
@@ -15,6 +15,22 @@ &wkup_gpio0 {
 	status = "okay";
 };
 
+&wkup_conf {
+	reboot-mode-syscon@10030 {
+		compatible = "syscon", "simple-mfd";
+		reg = <0x10030 0x4>;
+
+		reboot_mode: reboot-mode {
+			compatible = "syscon-reboot-mode";
+			offset = <0x0>;
+			mask = <0x3f8>;
+			mode-usbdfu = <0x250>;
+			mode-emmc = <0x48>;
+			mode-nand = <0x58>;
+		};
+	};
+};
+
 / {
 	aliases {
 		serial0 = &uart0;
-- 
2.39.5