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| author | Lukasz Luba <l.luba@partner.samsung.com> | 2019-10-02 08:04:52 +0200 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2019-10-02 19:31:57 +0200 |
| commit | 40192209b96b65ff3588e063c5b984e946baaaae (patch) | |
| tree | a78f6f6abdc6b463fa748e1cc34ef68fa1a66aec /Documentation/devicetree/bindings/memory-controllers | |
| parent | 296523d933060cad754626c751dc20f64dba7d01 (diff) | |
| download | linux-40192209b96b65ff3588e063c5b984e946baaaae.tar.bz2 | |
dt-bindings: memory-controllers: exynos5422-dmc: Add interrupt mode
Add description for optional interrupt lines. It provides a new
operation mode, which uses internal performance counters interrupt when
overflow. This is more reliable than using default polling mode
implemented in devfreq.
Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/memory-controllers')
| -rw-r--r-- | Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt b/Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt index 02aeb3b5a820..e2434cac4858 100644 --- a/Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt +++ b/Documentation/devicetree/bindings/memory-controllers/exynos5422-dmc.txt @@ -31,6 +31,14 @@ Required properties for DMC device for Exynos5422: The register offsets are in the driver code and specyfic for this SoC type. +Optional properties for DMC device for Exynos5422: +- interrupt-parent : The parent interrupt controller. +- interrupts : Contains the IRQ line numbers for the DMC internal performance + event counters in DREX0 and DREX1 channels. Align with specification of the + interrupt line(s) in the interrupt-parent controller. +- interrupt-names : IRQ names "drex_0" and "drex_1", the order should be the + same as in the 'interrupts' list above. + Example: ppmu_dmc0_0: ppmu@10d00000 { @@ -70,4 +78,7 @@ Example: device-handle = <&samsung_K3QF2F20DB>; vdd-supply = <&buck1_reg>; samsung,syscon-clk = <&clock>; + interrupt-parent = <&combiner>; + interrupts = <16 0>, <16 1>; + interrupt-names = "drex_0", "drex_1"; }; |