mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +08:00
d8f64797c5
Many of the Tegra DT binding documents say nothing about the clocks or clock-names properties, yet those are present and required in DT files. This patch simply updates the documentation file to match the implicit definition of the binding, based on real-world DT content. All Tegra bindings that mention clocks are updated to have consistent wording and formatting of the clock-related properties. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
62 lines
2.2 KiB
Plaintext
62 lines
2.2 KiB
Plaintext
NVIDIA Tegra30 AHUB (Audio Hub)
|
|
|
|
Required properties:
|
|
- compatible : "nvidia,tegra30-ahub", "nvidia,tegra114-ahub", etc.
|
|
- reg : Should contain the register physical address and length for each of
|
|
the AHUB's register blocks.
|
|
- Tegra30 requires 2 entries, for the APBIF and AHUB/AUDIO register blocks.
|
|
- Tegra114 requires an additional entry, for the APBIF2 register block.
|
|
- interrupts : Should contain AHUB interrupt
|
|
- nvidia,dma-request-selector : A list of the DMA channel specifiers. Each
|
|
entry contains the Tegra DMA controller's phandle and request selector.
|
|
If a single entry is present, the request selectors for the channels are
|
|
assumed to be contiguous, and increment from this value.
|
|
If multiple values are given, one value must be given per channel.
|
|
- clocks : Must contain an entry for each entry in clock-names.
|
|
See ../clocks/clock-bindings.txt for details.
|
|
- clock-names : Must include the following entries:
|
|
Tegra30 and later:
|
|
- d_audio
|
|
- apbif
|
|
- i2s0
|
|
- i2s1
|
|
- i2s2
|
|
- i2s3
|
|
- i2s4
|
|
- dam0
|
|
- dam1
|
|
- dam2
|
|
- spdif_in
|
|
Tegra114 and later additionally require:
|
|
- amx
|
|
- adx
|
|
- ranges : The bus address mapping for the configlink register bus.
|
|
Can be empty since the mapping is 1:1.
|
|
- #address-cells : For the configlink bus. Should be <1>;
|
|
- #size-cells : For the configlink bus. Should be <1>.
|
|
|
|
AHUB client modules need to specify the IDs of their CIFs (Client InterFaces).
|
|
For RX CIFs, the numbers indicate the register number within AHUB routing
|
|
register space (APBIF 0..3 RX, I2S 0..5 RX, DAM 0..2 RX 0..1, SPDIF RX 0..1).
|
|
For TX CIFs, the numbers indicate the bit position within the AHUB routing
|
|
registers (APBIF 0..3 TX, I2S 0..5 TX, DAM 0..2 TX, SPDIF TX 0..1).
|
|
|
|
Example:
|
|
|
|
ahub@70080000 {
|
|
compatible = "nvidia,tegra30-ahub";
|
|
reg = <0x70080000 0x200 0x70080200 0x100>;
|
|
interrupts = < 0 103 0x04 >;
|
|
nvidia,dma-request-selector = <&apbdma 1>;
|
|
clocks = <&tegra_car 106>, <&tegra_car 107>, <&tegra_car 30>,
|
|
<&tegra_car 11>, <&tegra_car 18>, <&tegra_car 101>,
|
|
<&tegra_car 102>, <&tegra_car 108>, <&tegra_car 109>,
|
|
<&tegra_car 110>, <&tegra_car 162>;
|
|
clock-names = "d_audio", "apbif", "i2s0", "i2s1", "i2s2",
|
|
"i2s3", "i2s4", "dam0", "dam1", "dam2",
|
|
"spdif_in";
|
|
ranges;
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
};
|