diff mbox series

[v11,01/10] dt-bindings: memory: tegra20: emc: Document opp-supported-hw property

Message ID 20201203192439.16177-2-digetx@gmail.com
State Not Applicable, archived
Headers show
Series Introduce memory interconnect for NVIDIA Tegra SoCs | expand

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Context Check Description
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Commit Message

Dmitry Osipenko Dec. 3, 2020, 7:24 p.m. UTC
Document opp-supported-hw property, which is not strictly necessary to
have on Tegra20, but it's very convenient to have because all other SoC
core devices will use hardware versioning, and thus, it's good to maintain
the consistency.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 .../bindings/memory-controllers/nvidia,tegra20-emc.txt      | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Thierry Reding Dec. 4, 2020, 3:46 p.m. UTC | #1
On Thu, Dec 03, 2020 at 10:24:30PM +0300, Dmitry Osipenko wrote:
> Document opp-supported-hw property, which is not strictly necessary to
> have on Tegra20, but it's very convenient to have because all other SoC
> core devices will use hardware versioning, and thus, it's good to maintain
> the consistency.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  .../bindings/memory-controllers/nvidia,tegra20-emc.txt      | 6 ++++++
>  1 file changed, 6 insertions(+)

Acked-by: Thierry Reding <treding@nvidia.com>
Rob Herring Dec. 9, 2020, 8:17 p.m. UTC | #2
On Thu, 03 Dec 2020 22:24:30 +0300, Dmitry Osipenko wrote:
> Document opp-supported-hw property, which is not strictly necessary to
> have on Tegra20, but it's very convenient to have because all other SoC
> core devices will use hardware versioning, and thus, it's good to maintain
> the consistency.
> 
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
>  .../bindings/memory-controllers/nvidia,tegra20-emc.txt      | 6 ++++++
>  1 file changed, 6 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt
index 67ac8d1297da..cc443fcf4bec 100644
--- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra20-emc.txt
@@ -16,6 +16,12 @@  Properties:
 - #interconnect-cells : Should be 0.
 - operating-points-v2: See ../bindings/opp/opp.txt for details.
 
+For each opp entry in 'operating-points-v2' table:
+- opp-supported-hw: One bitfield indicating SoC process ID mask
+
+	A bitwise AND is performed against this value and if any bit
+	matches, the OPP gets enabled.
+
 Optional properties:
 - core-supply: Phandle of voltage regulator of the SoC "core" power domain.