| Message ID | 20221028115353.13881-1-zajec5@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [V2] dt-bindings: timer: add Broadcom's BCMBCA timers | expand |
On 28/10/2022 07:53, Rafał Miłecki wrote: > From: Rafał Miłecki <rafal@milecki.pl> > > BCA is a big set / family of Broadcom devices sharing multiple hardware > blocks. One of them is timer that actually exists in two versions. It's > a part of TWD MFD block. > > Add binding for it so SoCs can be properly described. Linux (and > probably any other OS) doesn't really seem to need a driver for it. it > may be needed for bootloaders (e.g. U-Boot) though. Especially for SoCs > with CPUs other than Cortex-A9 (which contains arch timers). Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
On Fri, 28 Oct 2022, Rafał Miłecki wrote: > From: Rafał Miłecki <rafal@milecki.pl> > > BCA is a big set / family of Broadcom devices sharing multiple hardware > blocks. One of them is timer that actually exists in two versions. It's > a part of TWD MFD block. > > Add binding for it so SoCs can be properly described. Linux (and > probably any other OS) doesn't really seem to need a driver for it. it > may be needed for bootloaders (e.g. U-Boot) though. Especially for SoCs > with CPUs other than Cortex-A9 (which contains arch timers). > > Signed-off-by: Rafał Miłecki <rafal@milecki.pl> > --- > V2: Limit to 1 example (they were almost the same) > Drop "," in "e.g.," > --- > .../devicetree/bindings/mfd/brcm,twd.yaml | 8 ++++ > .../bindings/timer/brcm,bcmbca-timer.yaml | 40 +++++++++++++++++++ > 2 files changed, 48 insertions(+) > create mode 100644 Documentation/devicetree/bindings/timer/brcm,bcmbca-timer.yaml Applied, thanks.
diff --git a/Documentation/devicetree/bindings/mfd/brcm,twd.yaml b/Documentation/devicetree/bindings/mfd/brcm,twd.yaml index 634526f790b8..e5136a37b0a3 100644 --- a/Documentation/devicetree/bindings/mfd/brcm,twd.yaml +++ b/Documentation/devicetree/bindings/mfd/brcm,twd.yaml @@ -36,6 +36,9 @@ properties: const: 1 patternProperties: + '^timer@[a-f0-9]+$': + $ref: /schemas/timer/brcm,bcmbca-timer.yaml + '^watchdog@[a-f0-9]+$': $ref: /schemas/watchdog/brcm,bcm7038-wdt.yaml @@ -54,6 +57,11 @@ examples: #address-cells = <1>; #size-cells = <1>; + timer@0 { + compatible = "brcm,bcm63138-timer"; + reg = <0x0 0x28>; + }; + watchdog@28 { compatible = "brcm,bcm7038-wdt"; reg = <0x28 0x8>; diff --git a/Documentation/devicetree/bindings/timer/brcm,bcmbca-timer.yaml b/Documentation/devicetree/bindings/timer/brcm,bcmbca-timer.yaml new file mode 100644 index 000000000000..6707d9760857 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/brcm,bcmbca-timer.yaml @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/timer/brcm,bcmbca-timer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom Broadband SoC timer + +maintainers: + - Rafał Miłecki <rafal@milecki.pl> + +properties: + compatible: + oneOf: + - const: brcm,bcm6345-timer + description: > + An old block with 3 timers. + + It can be found in BCM6345, BCM6838 and BCM63268. + - const: brcm,bcm63138-timer + description: > + Updated block with 4 timers and control regs at the beginning. + + It can be found in newer SoCs, e.g. BCM63138, BCM63148, BCM63381, + BCM68360, BCM6848, BCM6858, BCM4908. + + reg: + maxItems: 1 + +additionalProperties: false + +required: + - reg + +examples: + - | + timer@fffe0200 { + compatible = "brcm,bcm6345-timer"; + reg = <0xfffe0200 0x1c>; + };