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Subject[PATCH v2 01/16] dt-bindings: update the Allwinner GPADC device tree binding for H3 & A83T
Date
Allwinner H3 features a thermal sensor like the one in A33, but has its
register re-arranged, the clock divider moved to CCU (originally the
clock divider is in ADC) and added a pair of bus clock and reset.

Allwinner A83T features a thermal sensor similar to the H3, the ths clock,
the bus clock and the reset was removed from the CCU. The THS in A83T
has a clock that is directly connected and runs with 24 MHz.

Update the binding document to cover H3 and A83T.

Signed-off-by: Philipp Rossak <embed3d@gmail.com>
---
.../devicetree/bindings/mfd/sun4i-gpadc.txt | 50 ++++++++++++++++++++--
1 file changed, 47 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/sun4i-gpadc.txt b/Documentation/devicetree/bindings/mfd/sun4i-gpadc.txt
index 86dd8191b04c..22df0c5c23d4 100644
--- a/Documentation/devicetree/bindings/mfd/sun4i-gpadc.txt
+++ b/Documentation/devicetree/bindings/mfd/sun4i-gpadc.txt
@@ -4,12 +4,35 @@ The Allwinner SoCs all have an ADC that can also act as a thermal sensor
and sometimes as a touchscreen controller.

Required properties:
- - compatible: "allwinner,sun8i-a33-ths",
+ - compatible: must contain one of the following compatibles:
+ - "allwinner,sun8i-a33-ths"
+ - "allwinner,sun8i-h3-ths"
+ - "allwinner,sun8i-a83t-ths"
- reg: mmio address range of the chip,
- - #thermal-sensor-cells: shall be 0,
+ - #thermal-sensor-cells: shall be 0 or 1,
- #io-channel-cells: shall be 0,

-Example:
+Required properties for the following compatibles:
+ - "allwinner,sun8i-h3-ths"
+ - "allwinner,sun8i-a83t-ths"
+ - interrupts: the sampling interrupt of the ADC,
+
+Required properties for the following compatibles:
+ - "allwinner,sun8i-h3-ths"
+ - clocks: the bus clock and the input clock of the ADC,
+ - clock-names: should be "bus" and "mod",
+ - resets: the bus reset of the ADC,
+
+Optional properties for the following compatibles:
+ - "allwinner,sun8i-h3-ths"
+ - nvmem-cells: A phandle to the calibration data provided by a nvmem device.
+ If unspecified default values shall be used. The size should
+ be 0x2 * sensorcount.
+ - nvmem-cell-names: Should be "calibration".
+
+Details see: bindings/nvmem/nvmem.txt
+
+Example for A33:
ths: ths@1c25000 {
compatible = "allwinner,sun8i-a33-ths";
reg = <0x01c25000 0x100>;
@@ -17,6 +40,27 @@ Example:
#io-channel-cells = <0>;
};

+Example for H3:
+ ths: thermal-sensor@1c25000 {
+ compatible = "allwinner,sun8i-h3-ths";
+ reg = <0x01c25000 0x400>;
+ clocks = <&ccu CLK_BUS_THS>, <&ccu CLK_THS>;
+ clock-names = "bus", "mod";
+ resets = <&ccu RST_BUS_THS>;
+ interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+ #thermal-sensor-cells = <0>;
+ #io-channel-cells = <0>;
+ };
+
+Example for A83T:
+ ths: thermal-sensor@1f04000 {
+ compatible = "allwinner,sun8i-a83t-ths";
+ reg = <0x01f04000 0x100>;
+ interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
+ #thermal-sensor-cells = <1>;
+ #io-channel-cells = <0>;
+ };
+
sun4i, sun5i and sun6i SoCs are also supported via the older binding:

sun4i resistive touchscreen controller
--
2.11.0
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