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Subject[PATCH v4 02/15] dt-bindings: memory: tegra: Document #reset-cells property of the Tegra30 MC
Date
Memory Controller has a memory client "hot reset" functionality, which
resets the DMA interface of a memory client. So MC is a reset controller
in addition to IOMMU.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../devicetree/bindings/memory-controllers/nvidia,tegra30-mc.txt | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.txt b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.txt
index 14968b048cd3..a878b5908a4d 100644
--- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.txt
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra30-mc.txt
@@ -12,6 +12,9 @@ Required properties:
- clock-names: Must include the following entries:
- mc: the module's clock input
- interrupts: The interrupt outputs from the controller.
+- #reset-cells : Should be 1. This cell represents memory client module ID.
+ The assignments may be found in header file <dt-bindings/memory/tegra30-mc.h>
+ or in the TRM documentation.

Required properties for Tegra30, Tegra114, Tegra124, Tegra132 and Tegra210:
- #iommu-cells: Should be 1. The single cell of the IOMMU specifier defines
@@ -72,12 +75,14 @@ Example SoC include file:
interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;

#iommu-cells = <1>;
+ #reset-cells = <1>;
};

sdhci@700b0000 {
compatible = "nvidia,tegra124-sdhci";
...
iommus = <&mc TEGRA_SWGROUP_SDMMC1A>;
+ resets = <&mc TEGRA124_MC_RESET_SDMMC1>;
};
};

--
2.16.3
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