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Date: Wed, 23 Dec 2020 12:34:37 +0100 From: Wilken Gottwalt <wilken.gottwalt@...teo.net> To: linux-kernel@...r.kernel.org Cc: Ohad Ben-Cohen <ohad@...ery.com>, Bjorn Andersson <bjorn.andersson@...aro.org>, Baolin Wang <baolin.wang7@...il.com>, Rob Herring <robh+dt@...nel.org>, Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...l.net> Subject: [PATCH v5 1/2] dt-bindings: hwlock: add sun6i_hwspinlock Adds documentation on how to use the sun6i_hwspinlock driver for sun6i compatible SoCs. Signed-off-by: Wilken Gottwalt <wilken.gottwalt@...teo.net> --- Changes in v5: - changed binding to earliest known supported SoC sun6i-a31 - dropped unnecessary entries Changes in v4: - changed binding to sun8i-a33-hwpinlock - added changes suggested by Maxime Ripard Changes in v3: - changed symbols from sunxi to sun8i Changes in v2: - fixed memory ranges --- .../bindings/hwlock/sun6i-a31-hwspinlock.yaml | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwlock/sun6i-a31-hwspinlock.yaml diff --git a/Documentation/devicetree/bindings/hwlock/sun6i-a31-hwspinlock.yaml b/Documentation/devicetree/bindings/hwlock/sun6i-a31-hwspinlock.yaml new file mode 100644 index 000000000000..481c5c995ad7 --- /dev/null +++ b/Documentation/devicetree/bindings/hwlock/sun6i-a31-hwspinlock.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwlock/sun6i-hwspinlock.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SUN6I hardware spinlock driver for Allwinner sun6i compatible SoCs + +maintainers: + - Wilken Gottwalt <wilken.gottwalt@...teo.net> + +description: + The hardware unit provides semaphores between the ARM cores and the embedded + companion core on the SoC. + +properties: + compatible: + const: allwinner,sun6i-a31-hwspinlock + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + +required: + - compatible + - reg + - clocks + - resets + +additionalProperties: false + +examples: + - | + hwspinlock@...8000 { + compatible = "allwinner,sun6i-a31-hwspinlock"; + reg = <0x01c18000 0x1000>; + clocks = <&ccu CLK_BUS_SPINLOCK>; + resets = <&ccu RST_BUS_SPINLOCK>; + }; -- 2.29.2
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