在 2017年04月04日 22:47, Rob Herring 写道:
On Sun, Apr 02, 2017 at 09:33:01PM +0800, Icenowy Zheng wrote:
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.
Update the binding document to cover H3.
Signed-off-by: Icenowy Zheng <[email protected]>
---
.../devicetree/bindings/mfd/sun4i-gpadc.txt | 23 ++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/mfd/sun4i-gpadc.txt
b/Documentation/devicetree/bindings/mfd/sun4i-gpadc.txt
index badff3611a98..7753133ca0ff 100644
--- a/Documentation/devicetree/bindings/mfd/sun4i-gpadc.txt
+++ b/Documentation/devicetree/bindings/mfd/sun4i-gpadc.txt
@@ -4,12 +4,20 @@ 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"
- reg: mmio address range of the chip,
- #thermal-sensor-cells: shall be 0,
- #io-channel-cells: shall be 0,
-Example:
+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 "ths",
+ - resets: the bus reset of the ADC,
+
+Example for A33:
ths: ths@01c25000 {
compatible = "allwinner,sun8i-a33-ths";
reg = <0x01c25000 0x100>;
@@ -17,6 +25,17 @@ Example:
#io-channel-cells = <0>;
};
+Example for H3:
+ ths: ths@01c25000 {
adc@...
It's a thermal sensor, so I think call it THS is more appropriate
here. It's implemented as an ADC driver just because the internal
code reusing of Linux. From device tree binding view I choose to
call it ths.
And drop the leading 0.
OK.
+ compatible = "allwinner,sun8i-h3-ths";
+ reg = <0x01c25000 0x100>;
+ clocks = <&ccu CLK_BUS_THS>, <&ccu CLK_THS>;
+ clock-names = "bus", "ths";
+ resets = <&ccu RST_BUS_THS>;
+ #thermal-sensor-cells = <0>;
+ #io-channel-cells = <0>;
+ };
+
sun4i, sun5i and sun6i SoCs are also supported via the older binding:
sun4i resistive touchscreen controller
--
2.12.2
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