[U-Boot] [PATCH V2 12/13] sandbox: dts: add sandbox_pmic.dtsi and include it to sandbox.dts and test.dts

[Przemyslaw Marczak]

This commit adds dtsi file for Sandbox PMIC.
It fully describes the PMIC by:
- i2c emul node - with a default settings of 16 registers
- 2x buck regulator nodes
- 2x ldo regulator nodes

The default register settings are set with preprocessor macros:
- VAL2REG(min[uV/uA], step[uV/uA], val[uV/uA])
- VAL2OMREG(mode id)
Both defined in file:
- include/dt-bindings/pmic/sandbox_pmic.h

The Voltage ranges of each regulator can be found in:
- include/power/sandbox_pmic.h

The new file is included into:
- sandbox.dts
- test.dts

Signed-off-by: Przemyslaw Marczak <p.marczak at samsung.com>
Acked-by: Simon Glass <sjg at chromium.org>
Tested on sandbox:
Tested-by: Simon Glass <sjg at chromium.org>
---
Changes V2:
- move sandbox PMIC node into sandbox_pmic.dtsi
- add sandbox_pmic.h into dt-bindings directory
- add pmic node to: sandbox.dts and test.dts
---
 arch/sandbox/dts/sandbox.dts            |  4 ++
 arch/sandbox/dts/sandbox_pmic.dtsi      | 78 +++++++++++++++++++++++++++++++++
 arch/sandbox/dts/test.dts               |  6 +++
 include/dt-bindings/pmic/sandbox_pmic.h | 35 +++++++++++++++
 4 files changed, 123 insertions(+)
 create mode 100644 arch/sandbox/dts/sandbox_pmic.dtsi
 create mode 100644 include/dt-bindings/pmic/sandbox_pmic.h

diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts
index efa2097..fd1e5dc 100644
--- a/arch/sandbox/dts/sandbox.dts
+++ b/arch/sandbox/dts/sandbox.dts
@@ -105,6 +105,9 @@
 				sandbox,size = <128>;
 			};
 		};
+		sandbox_pmic: sandbox_pmic {
+			reg = <0x40>;
+		};
 	};
 
 	spi at 0 {
@@ -195,3 +198,4 @@
 };
 
 #include "cros-ec-keyboard.dtsi"
+#include "sandbox_pmic.dtsi"
diff --git a/arch/sandbox/dts/sandbox_pmic.dtsi b/arch/sandbox/dts/sandbox_pmic.dtsi
new file mode 100644
index 0000000..44a26b1
--- /dev/null
+++ b/arch/sandbox/dts/sandbox_pmic.dtsi
@@ -0,0 +1,78 @@
+/*
+ *  Sandbox PMIC dts node
+ *
+ *  Copyright (C) 2015 Samsung Electronics
+ *  Przemyslaw Marczak  <p.marczak at samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <dt-bindings/pmic/sandbox_pmic.h>
+
+&sandbox_pmic {
+	compatible = "sandbox,pmic";
+
+	pmic_emul {
+		compatible = "sandbox,i2c-pmic";
+
+		/*
+		 * Default PMICs register values are set by macro
+		 * VAL2REG(min, step, value) [uV/uA]
+		 * VAL2OMREG(mode id)
+		 * reg-defaults - byte array
+		 */
+		reg-defaults = /bits/ 8 <
+			/* BUCK1 */
+			VAL2REG(800000, 25000, 1000000)
+			VAL2REG(150000, 25000, 150000)
+			VAL2OMREG(BUCK_OM_OFF)
+			/* BUCK2 */
+			VAL2REG(750000, 50000, 3000000)
+			VAL2REG(150000, 25000, 150000)
+			VAL2OMREG(0)
+			/* LDO1 */
+			VAL2REG(800000, 25000, 1600000)
+			VAL2REG(100000, 50000, 150000)
+			VAL2OMREG(LDO_OM_OFF)
+			/* LDO2 */
+			VAL2REG(750000, 50000, 3000000)
+			VAL2REG(150000, 25000, 150000)
+			VAL2OMREG(0)
+			/* reg[12:15] - not used */
+			0x00
+			0x00
+			0x00
+			0x00
+		>;
+	};
+
+	buck1 {
+		regulator-name = "SUPPLY_1.2V";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		regulator-min-microamp = <200000>;
+		regulator-max-microamp = <200000>;
+		regulator-always-on;
+	};
+
+	buck2 {
+		regulator-name = "SUPPLY_3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	ldo1 {
+		regulator-name = "VDD_EMMC_1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microamp = <100000>;
+		regulator-max-microamp = <100000>;
+		regulator-boot-on;
+	};
+
+	ldo2 {
+		regulator-name = "VDD_LCD_3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+};
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index d0c40be..1bc3ca0 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -139,6 +139,10 @@
 				sandbox,size = <256>;
 			};
 		};
+
+		sandbox_pmic: sandbox_pmic {
+			reg = <0x40>;
+		};
 	};
 
 	pci: pci-controller {
@@ -228,3 +232,5 @@
 	};
 
 };
+
+#include "sandbox_pmic.dtsi"
diff --git a/include/dt-bindings/pmic/sandbox_pmic.h b/include/dt-bindings/pmic/sandbox_pmic.h
new file mode 100644
index 0000000..c3d839b
--- /dev/null
+++ b/include/dt-bindings/pmic/sandbox_pmic.h
@@ -0,0 +1,35 @@
+/*
+ *  Copyright (C) 2015 Samsung Electronics
+ *  Przemyslaw Marczak  <p.marczak at samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _DT_BINDINGS_SANDBOX_PMIC_H_
+#define _DT_BINDINGS_SANDBOX_PMIC_H_
+
+/*
+ * Sandbox PMIC - prepare reset values
+ * To provide the default (reset) values as in the real hardware,
+ * the registers are set in i2c pmic emul driver's probe() method.
+ * The default values are defined as below.
+ */
+
+/* Buck operation mode IDs */
+#define BUCK_OM_OFF	0
+#define BUCK_OM_ON	1
+#define BUCK_OM_PWM	2
+#define BUCK_OM_COUNT	3
+
+/* Ldo operation mode IDs */
+#define LDO_OM_OFF	0
+#define LDO_OM_ON	1
+#define LDO_OM_SLEEP	2
+#define LDO_OM_STANDBY	3
+#define LDO_OM_COUNT	4
+
+/* [Value uV/uA]/[Mode ID] to register */
+#define VAL2REG(min, step, val)		(((val) - (min)) / (step))
+#define VAL2OMREG(x)			(x)
+
+#endif
-- 
1.9.1