[PATCH v2 2/9] dt-bindings: rtc: sun6i: Add H616, R329, and D1 support
From: Samuel Holland <samuel@sholland.org>
Date: 2021-09-28 08:04:29
Also in:
linux-arm-kernel, linux-clk, linux-devicetree, linux-sunxi, lkml
Subsystem:
common clk framework, open firmware and flattened device tree bindings, real time clock (rtc) subsystem, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Alexandre Belloni, Linus Torvalds
These new RTC variants all have a single alarm, like the R40 variant. For the new SoCs, start requiring a complete list of input clocks. The H616 has three required clocks. The R329 also has three required clocks (but one is different), plus an optional crystal oscillator input. The D1 RTC is identical to the one in the R329. And since these new SoCs will have a well-defined output clock order as well, they do not need the clock-output-names property. Signed-off-by: Samuel Holland <samuel@sholland.org> --- Changes since v1: - Properly update the DT binding clocks and clock-names properties. .../bindings/rtc/allwinner,sun6i-a31-rtc.yaml | 72 ++++++++++++++++++- include/dt-bindings/clock/sun6i-rtc.h | 10 +++ 2 files changed, 79 insertions(+), 3 deletions(-) create mode 100644 include/dt-bindings/clock/sun6i-rtc.h
diff --git a/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml b/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml
index a88d46ffb457..b971510a5ae7 100644
--- a/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml@@ -24,9 +24,14 @@ properties: - allwinner,sun8i-v3-rtc - allwinner,sun50i-h5-rtc - allwinner,sun50i-h6-rtc + - allwinner,sun50i-h616-rtc + - allwinner,sun50i-r329-rtc - items: - const: allwinner,sun50i-a64-rtc - const: allwinner,sun8i-h3-rtc + - items: + - const: allwinner,sun20i-d1-rtc + - const: allwinner,sun50i-r329-rtc reg: maxItems: 1
@@ -38,7 +43,10 @@ properties: - description: RTC Alarm 1 clocks: - maxItems: 1 + minItems: 1 + + clock-names: + minItems: 1 clock-output-names: minItems: 1
@@ -98,7 +106,66 @@ allOf: properties: compatible: contains: - const: allwinner,sun8i-r40-rtc + const: allwinner,sun50i-h616-rtc + + then: + clocks: + minItems: 3 + maxItems: 3 + items: + - description: Bus clock for register access + - description: 24 MHz oscillator + - description: 32 kHz clock derived from a PLL + + clock-names: + minItems: 3 + minItems: 3 + items: + - const: bus + - const: hosc + - const: pll-32k + + required: + - clocks + - clock-names + + - if: + properties: + compatible: + contains: + const: allwinner,sun50i-r329-rtc + + then: + clocks: + minItems: 3 + maxItems: 4 + items: + - description: AHB parent for internal SPI clock + - description: Bus clock for register access + - description: 24 MHz oscillator + - description: External 32768 Hz oscillator + + clock-names: + minItems: 3 + minItems: 4 + items: + - const: ahb + - const: bus + - const: hosc + - const: ext-osc32k + + required: + - clocks + - clock-names + + - if: + properties: + compatible: + contains: + enum: + - allwinner,sun8i-r40-rtc + - allwinner,sun50i-h616-rtc + - allwinner,sun50i-r329-rtc then: properties:
@@ -117,7 +184,6 @@ required: - compatible - reg - interrupts - - clock-output-names additionalProperties: false
diff --git a/include/dt-bindings/clock/sun6i-rtc.h b/include/dt-bindings/clock/sun6i-rtc.h
new file mode 100644
index 000000000000..c845493e4d37
--- /dev/null
+++ b/include/dt-bindings/clock/sun6i-rtc.h@@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: (GPL-2.0+ or MIT) */ + +#ifndef _DT_BINDINGS_CLK_SUN6I_RTC_H_ +#define _DT_BINDINGS_CLK_SUN6I_RTC_H_ + +#define CLK_OSC32K 0 +#define CLK_OSC32K_FANOUT 1 +#define CLK_IOSC 2 + +#endif /* _DT_BINDINGS_CLK_SUN6I_RTC_H_ */
--
2.31.1