diff options
| author | Rafał Miłecki <rafal@milecki.pl> | 2022-10-28 13:53:53 +0200 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2022-12-07 14:28:09 +0100 |
| commit | e112f2de151badd38a9c8a098a1f92f2369349cb (patch) | |
| tree | 86c0602c7964a92c2f36588bf17adfbdefb7b09c /Documentation/devicetree | |
| parent | mfd: qcom-pm8xxx: Drop unused PM8018 compatible (diff) | |
| download | linux-e112f2de151badd38a9c8a098a1f92f2369349cb.tar.xz linux-e112f2de151badd38a9c8a098a1f92f2369349cb.zip | |
dt-bindings: timer: Add Broadcom's BCMBCA timers
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>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20221028115353.13881-1-zajec5@gmail.com
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/mfd/brcm,twd.yaml | 8 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/timer/brcm,bcmbca-timer.yaml | 40 |
2 files changed, 48 insertions, 0 deletions
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>; + }; |