This adds a working example dtsi file for the state framework. It can
be directly included by the Phytec phyFLEX i.MX6 board. The board has
been chosen because it has a wide range of different storage devices
suitable for state: SD, NAND, SPI NOR and i2c EEPROM.
This example can be used for testing and also as a template for others
to copy.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
arch/arm/dts/imx6qdl-phytec-pbab01.dtsi | 4 +
arch/arm/dts/state-example.dtsi | 128 ++++++++++++++++++++++++++++++++
2 files changed, 132 insertions(+)
create mode 100644 arch/arm/dts/state-example.dtsi
diff --git a/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi b/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi
index 86ab991c91..991c7e4fab 100644
--- a/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi
+++ b/arch/arm/dts/imx6qdl-phytec-pbab01.dtsi
@@ -14,3 +14,7 @@
&uart1 {
status = "okay";
};
+
+#ifdef USE_STATE_EXAMPLE
+#include "state-example.dtsi"
+#endif
diff --git a/arch/arm/dts/state-example.dtsi b/arch/arm/dts/state-example.dtsi
new file mode 100644
index 0000000000..490ee7840b
--- /dev/null
+++ b/arch/arm/dts/state-example.dtsi
@@ -0,0 +1,128 @@
+/*
+ * This code is released using a dual license strategy: BSD/GPL
+ * You can choose the licence that better fits your requirements.
+ *
+ * Released under the terms of 3-clause BSD License
+ * Released under the terms of GNU General Public License Version 2.0
+ *
+ */
+
+/*
+ * This contains an example how to use the state framework. This file
+ * can be directly included by imx6qdl-phytec-pbab01.dtsi, other boards
+ * need adjustments. Note that this example may use the partitions in
+ * other ways than intended by phytec, so before using this see below
+ * if it will overwrite some precious data.
+ */
+
+#define STATE_VARS \
+ #address-cells = <1>; \
+ #size-cells = <1>; \
+ mac { \
+ reg = <0x0 0x6>; \
+ type = "mac"; \
+ }; \
+ \
+ number { \
+ reg = <0x8 0x4>; \
+ type = "uint32"; \
+ }; \
+ \
+ name { \
+ reg = <0xc 0x10>; \
+ type = "string"; \
+ }; \
+ \
+ fruit { \
+ reg = <0x1c 0x4>; \
+ type = "enum32"; \
+ names = "apple", "pear", "banana"; \
+ }
+
+/ {
+ aliases {
+ state_nor = &state_nor;
+ state_nand = &state_nand;
+ state_sd = &state_sd;
+ state_eeprom = &state_eeprom;
+ };
+
+ state_nor: state_nor {
+ magic = <0x512890a0>;
+ compatible = "barebox,state";
+ backend-type = "raw";
+ backend = <&backend_state_nor>;
+ backend-storage-type = "circular";
+
+ STATE_VARS;
+ };
+
+ state_nand: state_nand {
+ magic = <0xab67421f>;
+ compatible = "barebox,state";
+ backend-type = "raw";
+ backend = <&backend_state_nand>;
+ backend-storage-type = "circular";
+
+ STATE_VARS;
+ };
+
+ state_sd: state_sd {
+ magic = <0xef784236>;
+ compatible = "barebox,state";
+ backend-type = "raw";
+ backend = <&backend_state_usdhc>;
+ backend-stridesize = <1024>;
+
+ STATE_VARS;
+ };
+
+ state_eeprom: state_eeprom {
+ magic = <0x344682db>;
+ compatible = "barebox,state";
+ backend-type = "raw";
+ backend = <&backend_state_eeprom>;
+ backend-stridesize = <64>;
+
+ STATE_VARS;
+ };
+
+};
+
+&ecspi3 {
+ flash@0 {
+ backend_state_nor: partition@120000 {
+ };
+ };
+};
+
+&gpmi {
+ backend_state_nand: partition@500000 {
+ };
+};
+
+&i2c1 {
+ eeprom@50 {
+ partitions {
+ compatible = "fixed-partitions";
+ #size-cells = <1>;
+ #address-cells = <1>;
+ backend_state_eeprom: state@400 {
+ reg = <0x400 0x400>;
+ label = "state-eeprom";
+ };
+ };
+ };
+};
+
+&usdhc2 {
+ partitions {
+ compatible = "fixed-partitions";
+ #size-cells = <1>;
+ #address-cells = <1>;
+ backend_state_usdhc: state@0x80000 {
+ reg = <0x80000 0x80000>;
+ label = "state-sd";
+ };
+ };
+};
\ No newline at end of file
--
2.11.0
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