diff options
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml | 70 |
1 files changed, 51 insertions, 19 deletions
diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml index 424a4fc218b6..51241c1293e3 100644 --- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml @@ -80,6 +80,17 @@ properties: support for 64 KiB transactions whereas earlier chips supported no more than 4 KiB per transactions. const: nvidia,tegra194-i2c + - description: | + Tegra256 has 8 generic I2C controllers. The controllers are similar to + the previous generations, but have a different parent clock and hence + the timing parameters are configured differently. + const: nvidia,tegra256-i2c + - description: + Tegra264 has 17 generic I2C controllers, two of which are in the AON + (always-on) partition of the SoC. In addition to the features from + Tegra194, a SW mutex register is added to support use of the same I2C + instance across multiple firmwares. + const: nvidia,tegra264-i2c reg: maxItems: 1 @@ -87,12 +98,6 @@ properties: interrupts: maxItems: 1 - '#address-cells': - const: 1 - - '#size-cells': - const: 0 - clocks: minItems: 1 maxItems: 2 @@ -103,12 +108,18 @@ properties: resets: items: - - description: module reset + - description: + Module reset. This property is optional for controllers in Tegra194, + Tegra234 etc where an internal software reset is available as an + alternative. reset-names: items: - const: i2c + power-domains: + maxItems: 1 + dmas: items: - description: DMA channel for the reception FIFO @@ -119,6 +130,13 @@ properties: - const: rx - const: tx +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + allOf: - $ref: /schemas/i2c/i2c-controller.yaml - if: @@ -130,6 +148,8 @@ allOf: - nvidia,tegra30-i2c then: properties: + clocks: + minItems: 2 clock-names: items: - const: div-clk @@ -139,20 +159,13 @@ allOf: properties: compatible: contains: - const: nvidia,tegra114-i2c - then: - properties: - clock-names: - items: - - const: div-clk - - - if: - properties: - compatible: - contains: - const: nvidia,tegra210-i2c + enum: + - nvidia,tegra114-i2c + - nvidia,tegra210-i2c then: properties: + clocks: + maxItems: 1 clock-names: items: - const: div-clk @@ -164,6 +177,8 @@ allOf: const: nvidia,tegra210-i2c-vi then: properties: + clocks: + minItems: 2 clock-names: items: - const: div-clk @@ -171,6 +186,23 @@ allOf: power-domains: items: - description: phandle to the VENC power domain + else: + properties: + power-domains: false + + - if: + not: + properties: + compatible: + contains: + enum: + - nvidia,tegra194-i2c + - nvidia,tegra256-i2c + - nvidia,tegra264-i2c + then: + required: + - resets + - reset-names unevaluatedProperties: false |