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Subject[RFC PATCH v2 3/6] dt-binding: tegra: Add VI and CSI bindings
Date
Tegra contains VI controller which can support up to 6 MIPI CSI
camera sensors.

Each Tegra CSI port from CSI unit can be one-to-one mapper to
VI channel and can capture from an external camera sensor or
from built-in test pattern generator.

This patch adds dt-bindings for Tegra VI and CSI.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
.../display/tegra/nvidia,tegra20-host1x.txt | 55 ++++++++++++++++++----
1 file changed, 47 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
index 9999255ac5b6..3d0ed540a646 100644
--- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
@@ -40,14 +40,24 @@ of the following host1x client modules:

Required properties:
- compatible: "nvidia,tegra<chip>-vi"
- - reg: Physical base address and length of the controller's registers.
+ - reg: Physical base address and length of the controller registers.
- interrupts: The interrupt outputs from the controller.
- - clocks: Must contain one entry, for the module clock.
+ - clocks: Must contain an entry for the module clock "vi"
See ../clocks/clock-bindings.txt for details.
- resets: Must contain an entry for each entry in reset-names.
See ../reset/reset.txt for details.
- - reset-names: Must include the following entries:
- - vi
+ - reset-names: Must include the entry "vi"
+
+ Tegra210 has CSI part of VI sharing same host interface and register
+ space. So, VI device node should have CSI child node.
+
+ - csi: mipi csi interface to vi
+
+ Required properties:
+ - compatible: "nvidia,tegra<chip>-csi"
+ - reg: Physical base address and length of the controller registers.
+ - clocks: Must contain entries csi, cilab, cilcd, cile clocks.
+ See ../clocks/clock-bindings.txt for details.

- epp: encoder pre-processor

@@ -310,12 +320,41 @@ Example:
};

vi {
- compatible = "nvidia,tegra20-vi";
- reg = <0x54080000 0x00040000>;
+ compatible = "nvidia,tegra210-vi";
+ reg = <0x0 0x54080000 0x0 0x700>;
interrupts = <0 69 0x04>;
- clocks = <&tegra_car TEGRA20_CLK_VI>;
- resets = <&tegra_car 100>;
+ assigned-clocks = <&tegra_car TEGRA210_CLK_VI>;
+ assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_C4_OUT0>;
+ clocks = <&tegra_car TEGRA210_CLK_VI>;
+ clock-names = "vi";
+ resets = <&tegra_car 20>;
reset-names = "vi";
+
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ ranges = <0x0 0x54080808 0x0 0x54080808 0x0 0x2000>;
+
+ csi@0x54080838 {
+ compatible = "nvidia,tegra210-csi";
+ reg = <0x0 0x54080838 0x0 0x2000>;
+ status = "disabled";
+ assigned-clocks = <&tegra_car TEGRA210_CLK_CILAB>,
+ <&tegra_car TEGRA210_CLK_CILCD>,
+ <&tegra_car TEGRA210_CLK_CILE>;
+ assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_P>,
+ <&tegra_car TEGRA210_CLK_PLL_P>,
+ <&tegra_car TEGRA210_CLK_PLL_P>;
+ assigned-clock-rates = <102000000>,
+ <102000000>,
+ <102000000>;
+ clocks = <&tegra_car TEGRA210_CLK_CSI>,
+ <&tegra_car TEGRA210_CLK_CILAB>,
+ <&tegra_car TEGRA210_CLK_CILCD>,
+ <&tegra_car TEGRA210_CLK_CILE>;
+ clock-names = "csi", "cilab", "cilcd", "cile";
+ };
+
};

epp {
--
2.7.4
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